Water-soluble films, pouches, and container systems

Abstract

A container system comprising a sealable container and at least one pouch in the interior space of the container, the pouch containing a water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend and a fragrance and organic solvent-containing composition at least partially enclosed in a compartment by the water-soluble film.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS The benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 62 / 322,234, filed April 13, 2016, is hereby claimed, the disclosure of which is hereby incorporated by reference herein.

[0002] The present disclosure relates to water-soluble films, associated water-soluble pouches, and container systems comprising a sealable container and at least one pouch in an interior space of the container, the pouch containing a water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend and a household or non-household care composition containing migrating ingredients such as fragrances and organic solvents, the composition being at least partially enclosed in a compartment by the water-soluble film. [Background technology]

[0003] Water-soluble pouches have proven to be an effective and popular method for delivering unit doses of household care compositions, such as laundry detergents.Such pouches often package household care compositions in compartments formed by water-soluble films, thereby providing consumers with a convenient, non-staining form.Consumers may choose such products not only for convenience and performance benefits, but also for aesthetic reasons.For example, the products can deliver a pleasant fragrance to target surfaces, such as fabrics.

[0004] When a consumer opens a sealed container containing such a pouch, it is desirable for the consumer to perceive a pleasant bloom of the delivered fragrance. For example, a consumer may wish to smell different types of odors in a store to determine which one they would like to purchase. Such a bloom of fragrance upon opening the container can also provide a pleasant distraction from arduous household chores, making them more enjoyable.

[0005] However, the pouch format of these household care compositions makes it difficult to deliver such perfume blooms.Pouches often contain water-soluble films made from polyvinyl alcohol polymers, and such films are typically selected to minimize leakage of any ingredients from within the pouch compartment(s).Leakage or loss of ingredients such as organic solvents can result in product stability issues, reduced performance benefits, underfilled pouches that can negatively impact consumer product quality perception, and / or pouches that stick or feel oily to consumers.

[0006] Films that are selected to minimize leakage of composition components will also generally result in low levels of perfume leakage.Low levels of perfume leakage mean that consumers may not experience a pleasant perfume bloom when opening the container.This problem has been addressed in the past by applying perfume hot melt beads to the container as a scent substitute, but such an approach requires additional manufacturing or packaging steps, as well as additional chemistry development and formulation costs.

[0007] There is a need to provide an improved film and associated container system including at least one pouch where a pleasant fragrance bloom is experienced upon opening the container without additional manufacturing steps, chemistry, or formulation costs. Summary of the Invention

[0008] The present disclosure relates to water-soluble films and associated pouches made from the films, as well as methods of making and using the films and pouches. The present disclosure also relates to a container system comprising a container containing such a pouch therein. The pouch can contain a composition (e.g., a household care composition or a non-household care composition, such as a detergent) comprising a fragrance and an organic solvent, at least partially enclosed in a compartment by the water-soluble film described herein.

[0009] The present disclosure also relates to a container system comprising a sealable container having a wall defining an interior space, at least one pouch in the interior space comprising a water soluble film and a household or non-household care composition at least partially enclosed in a compartment by the water soluble film, the household or non-household care composition comprising a fragrance and an organic solvent, the film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, the PVOH resin blend further comprising a second PVOH polymer selected from (a) a PVOH polymer comprising a second anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, or (b) a PVOH homopolymer consisting of vinyl alcohol monomer units and optionally vinyl acetate units. [Brief description of the drawings]

[0010] The illustrations herein are illustrative in nature and are not intended to be limiting.

[0011] [Figure 1] A flexible bag is shown. [Diagram 2] 1 shows a soft flow wrap bag. [Diagram 3] 1 shows a rigid container. [Figure 4] 1 shows a rigid container. [Diagram 5] FIG. [Figure 6] 1 shows a multi-compartment pouch. [Figure 7] 1 shows measurements of pouch exudation in the first, upper compartment of a multi-compartment pouch. [Figure 8] 1 shows measurements of pouch exudation in the second, upper compartment of a multi-compartment pouch. [Figure 9] 1 shows measurements of pouch exudation in the bottom compartment of a multi-compartment pouch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The present disclosure relates to a water-soluble film, an associated pouch, and an associated container system comprising a sealable container that contains at least one pouch therein, the pouch comprising a water-soluble film and a household or non-household care composition, which comprises a fragrance and an organic solvent, at least partially enclosed in a compartment by the water-soluble film. Without wishing to be bound by theory, it is believed that careful selection of a film with a specific polyvinyl alcohol resin blend for such a pouch can result in a pleasant fragrance bloom upon opening the sealed container, while minimizing other leakage of pouch components (e.g., organic solvents), which may cause problems such as product instability and / or loss of pouch integrity. The films also have suitable chemical and mechanical properties that make them useful for forming water-soluble containers (e.g., thermoforming), and for resisting chemical changes upon contact with various types of compositions, such as alkaline detergents. In particular, the films of the present disclosure are adapted for use with fragrance-containing compositions to provide the benefits described herein by including a polyvinyl alcohol resin blend that includes at least one polyvinyl alcohol polymer that includes an anionic monomer unit.

[0013] definition As used herein, the articles "a" and "an" are understood to mean, when used in a claim, one or more of what is claimed or described. As used herein, the terms "include", "includes" and "including" are meant to be non-limiting. The compositions of the present disclosure can comprise, consist essentially of, or consist of the components of the present disclosure.

[0014] The term "substantially free" may be used herein. This means that the indicated material is at least not intentionally added to the composition, does not form part of it, or is preferably not present at analytically detectable levels. It means including compositions in which the indicated material is present only as an impurity in one of the other intentionally included materials. The indicated material, if present at all, may be present at a level of less than 1% by weight of the composition, or less than 0.1% by weight, or less than 0.01% by weight, or even 0% by weight.

[0015] The pouches of the present disclosure may contain a composition, such as a household care composition or a non-household care composition. The composition may be selected from liquids, solids, or combinations thereof. As used herein, "liquids" include free-flowing liquids, as well as pastes, gels, foams, and mousses. Non-limiting examples of liquids include light-duty and heavy-duty liquid detergent compositions, fabric enhancers, detergent gels commonly used in laundry, bleaching, and laundry additives. Gas, such as suspended bubbles, or solids, such as particles, may be included within the liquid. As used herein, "solids" include, but are not limited to, powders, agglomerates, and mixtures thereof. Non-limiting examples of solids include granules, microcapsules, beads, noodles, and pearls. Solid compositions may provide technical benefits, including, but not limited to, through-the-wash benefits, pre-treatment benefits, and / or aesthetic effects.

[0016] As used herein, the term "homopolymer" generally includes polymers having a single type of monomer repeat unit (e.g., a polymer chain consisting or consisting essentially of a single monomer repeat unit). For the specific case of PVOH, the term "homopolymer" (or "PVOH homopolymer" or "PVOH polymer") further includes copolymers having a distribution of vinyl alcohol and vinyl acetate monomer units depending on the degree of hydrolysis (e.g., a polymer chain consisting or consisting essentially of vinyl alcohol and vinyl acetate monomer units). In the limiting case of 100% hydrolysis, PVOH homopolymer can include a true homopolymer having only vinyl alcohol units.

[0017] As used herein, the term "copolymer" generally includes polymers having two or more types of monomer repeat units (e.g., polymer chains consisting or essentially of two or more different monomer repeat units, random copolymers, block copolymers, etc.). For the specific case of PVOH, the term "copolymer" (or "PVOH copolymer") further includes copolymers having a distribution of vinyl alcohol and vinyl acetate monomer units, as well as at least one other type of monomer repeat unit, depending on the degree of hydrolysis (e.g., ter (or higher) polymer chains consisting or essentially of vinyl alcohol, vinyl acetate, and one or more other monomer units, e.g., anionic monomer units). In the limiting case of 100% hydrolysis, PVOH copolymers can include copolymers having vinyl alcohol units and one or more other monomer units, but no vinyl acetate units.

[0018] As used herein, and unless otherwise specified, the term "wt %" is intended to refer to the composition of the identified element in parts by "dry" (non-aqueous) weight of the total film (if applicable) or parts by weight of the total composition enclosed within a pouch (if applicable). As used herein, and unless otherwise specified, the term "phr" is intended to refer to the composition of the identified element in parts per 100 parts of water soluble polymer (or resin, PVOH or other) in the water soluble film.

[0019] Unless otherwise stated, all ingredient or composition levels refer to the active portion of that ingredient or composition and do not include impurities, such as residual solvents or by-products, that may be present in commercial sources of such ingredient or composition.

[0020] Unless otherwise indicated, all temperatures are in degrees Celsius (° C.). All measurements herein are made at 20° C. and atmospheric pressure unless otherwise specified.

[0021] In this disclosure, all percentages are by weight of the total composition unless otherwise stated. All ratios are by weight unless otherwise stated.

[0022] It is to be understood that every maximum numerical limit given throughout this specification includes every lower numerical limit, as if such lower numerical limit were expressly written herein. Every minimum numerical limit given throughout this specification includes every higher numerical limit, as if such higher numerical limits were expressly written herein. Every numerical range given throughout this specification includes every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.

[0023] container The container system of the present disclosure relates to a container. The container described herein is sealable and typically is supplied to at least the consumer as a sealed container. The container may be resealable after opening, especially when the container comprises a plurality of pouches described herein. The container may not be resealable and may be intended to be discarded after the first opening, especially when the container comprises only one pouch described herein.

[0024] The container of the present disclosure can have a wall that defines an interior space. The container can have a bottom wall and one or more side walls. One or more side walls can be connected to the bottom wall, and the walls together can define an interior space. One or more of the walls can be transparent, translucent, or opaque, either partially or completely. Transparent or translucent walls, or even opaque walls that include transparent or translucent windows, are useful for showing pouches inside the container, for example, to show the number or volume remaining in the container. Opaque walls are useful when it is desirable to not see the pouches inside the container.

[0025] The interior space can have any volume suitable for accommodating one or more pouches described herein. The interior space can have a volume suitable for accommodating only one pouch. The interior space can have a volume suitable for accommodating about 5, or about 10, or about 15, or about 20, or about 35, or about 55, or about 75, or about 100 pouches described herein. The size of the container can be selected by one of skill in the art to appropriately accommodate the desired number and / or size of pouches.

[0026] The container can have an opening suitable for adding and / or dispensing the pouches described herein, and in particular where the container is resealable, the opening can be selectively sealable and / or selectively openable.

[0027] 1-4, the container 1000 may be any container suitable for housing the pouch 1050 described herein. The container 1000 may be selected from a soft bag 1100 and a rigid tub 1200.

[0028] As shown in Figures 1 and 2, the container 1000 may be a flexible bag 1100. Suitable bags may be made from materials such as film-forming plastics, such as polyethylene terephthalate, polyethylene, Nylon®, Barex®, Evoh®, and combinations thereof. As shown in Figure 1, the bag 1100 may include a wall 1010 made from panels 1102 joined together at edges 1104, 1106, forming an interior space 1020 therebetween. Non-limiting examples of joining processes include ultrasonic welding, autogenous bonding, pressure sealing, adhesive sealing, and combinations thereof. The panels 1102 may include layers laminated together. The bag 1100 may include a window 1112 through which the contained pouch can be viewed. The bag 1100 may be partially or completely opaque. The flexible bag 1100 may be resealable after opening. Typically, such bags 1100 include a resealable opening 1108. The panels 1102 of the resealable soft bag 1100 may be selectively engageable near the resealable opening 1108. The panels 1102 may include an adhesive or the panels 1102 may include a zipper 1110 having a complementary zipper profile. The zipper profile may have interlocking members in the form of hooks, male and female members, etc. The zipper 1110 may be a compression seal type zipper and / or may include a slider to facilitate opening and / or sealing. The soft bag 1100 may include a removable hood that may be removed to expose the zipper 1110.

[0029] The container 1000 may be a flexible bag 1100 that is a flow wrap bag 1120, as shown in FIG. 2. The flow wrap bag 1120 typically encloses a single pouch, for example used for sampling, allowing the consumer to experience the product fragrance when opening the flow wrap. Typically, the flow wrap bag 1120 is intended for one-time use and does not include a resealing means. The wall 1010 of the bag 1120 may be encased in a type of tube that defines the interior space 1020. The flow wrap bag 1020 may include end seals 1122, 1124, and the material of the wall 1010 may be bonded to itself. The bag 1020 may also include a length seal 1126 that extends from one end seal 1122 to the other end seal 1124.

[0030] As shown in Figures 3 and 4, the container 1000 may be a rigid tub 1200. The tub may include a lid 1212 and a container body 1202. The tub 1200, or portions thereof, may be made of a material such as a suitable plastic material, such as polyethylene terephthalate or any suitable polyolefin and / or polyester. The body 1202 of the tub 1200 may include a front wall 1204, a rear wall 1205, side walls 1206, 1208, and a bottom wall 1210 that form an interior space 1020 therebetween. The lid 1212, or portions thereof, may be partially or entirely formed of a moldable thermoplastic material, such as polypropylene, polyethylene, polystyrene, acrylonitrile butadiene styrene (ABS), polyester, polyvinyl chloride, polycarbonate, or elastomer, or blends of these materials. The tub 1200, or portions thereof, may be molded, for example, by injection molding, stretch molding, or blow molding. The lid 1212 may be capable of moving from a closed position to an open position, which may allow the tab to be resealed after opening. The lid 1212 may be a hinged lid that is hingedly connected to the container with a hinge and can be rotated from a closed position to an open position. The lid 1212 may include a locking mechanism 1214, such as a latch, that helps hold the lid 1212 in the closed position. The lid 1212 may include threads that can selectively engage with threads near an opening of the container, such as the container neck. A threaded lid can be opened by rotating the lid in an opening direction and can be sealed by rotating the lid in a sealing direction, typically opposite the opening direction. The tab can include a transition piece or collar between the container body and the lid.

[0031] The container may restrict the ingress and / or egress of water, including water vapor, into the container, especially since the container is intended to contain a pouch containing a water-sensitive film. When the opening is in a closed position, the package may have a moisture vapor transfer rate (MVTR) of less than about 2.0 grams per square meter of package surface per day (g / day / m^2), or less than about 1.0 g / day / m^2, or less than about 0.75 g / day / m^2, or less than about 0.50 g / day / m^2, or less than about 0.25 g / day / m^2 at 35°C and 65% relative humidity. The MVTR measurement of MVTR is measured according to the method disclosed in ASTM D7709. The container that restricts the ingress / egress of water and / or water vapor may also be useful for containing volatile perfumes, so that a sufficient volume of perfume may accumulate in the head space of the container to allow the desired perfume bloom upon opening the container.

[0032] Pouch The container system described herein can include at least one pouch. The pouch can include a water-soluble film. The film can be formed into a compartment, which can at least partially or completely encapsulate the composition. The composition can be a household care composition or a non-household care composition that is at least partially encapsulated in the compartment by the water-soluble film. Suitable films and household care compositions are described in more detail herein, while household care compositions and non-household care compositions are generally known.

[0033] A pouch typically includes at least one sealed compartment. A pouch may include a single compartment or multiple compartments, such as at least two compartments or at least three compartments. FIG. 5 shows an article in which a water-soluble pouch 100 is formed from water-soluble polymeric films 10, 20 sealed at an interface 30. One or both of the films 10, 20 include a PVOH resin blend of a first PVOH polymer and a second PVOH polymer. The films 10, 20 define an internal pouch volume 40 that contains any desired composition 50 for release into an aqueous environment. The composition 50 is not particularly limited and may include any of a variety of compositions, including cleaning compositions, as described below. In embodiments that include multiple compartments, each compartment may contain the same and / or different compositions. The composition may then take any suitable form, including, but not limited to, liquids, solids, and combinations thereof (e.g., solids suspended in a liquid). The pouch may include first, second, and third compartments, each of which contains a different first, second, and third composition, respectively.

[0034] 6 shows an article in which a water-soluble multi-compartment pouch 1 has been formed from a water-soluble film 5. The pouch 1 has three compartments, two smaller compartments 3, 4 stacked on top of a larger bottom compartment 2.

[0035] The compartments of the multi-compartment pouch may be of the same or different size(s) and / or volume(s). The compartments of the present multi-compartment pouch may be separated or joined in any suitable manner. The second and / or third and / or subsequent compartments may be stacked on top of the first compartment. The third compartment may be stacked on top of the second compartment, which in turn may be stacked in a sandwich configuration on top of the first compartment. Alternatively, the second and third compartments may be stacked on top of the first compartment. However, it is also envisioned that the first, second and optionally third and subsequent compartments may be joined to each other in an adjacent relationship. The compartments may be packaged in a series, with each compartment being individually separable by a perforation. Thus, each compartment may be individually cut from the remainder of the series by an end user, for example, to pre-treat or post-treat a fabric with a composition from one compartment. The first compartment may be surrounded by at least the second compartment, for example, in a tire and rim configuration or in a pouch-in-pouch configuration.

[0036] The multi-compartment pouch may include three compartments, consisting of one large first compartment and two smaller compartments. The second and third smaller compartments are stacked on top of the first larger compartment. The size and shape of the compartments are selected so that this arrangement is achievable. The compartment shapes may be the same or different. The second and optionally third compartments may each have a different shape and shape compared to the first compartment. The second and optionally third compartments may be arranged in a design on the first compartment. This design may be decorative, educational, or illustrative, for example, to illustrate a concept or instruction, and / or may be used to indicate the origin of the product. The first compartment may be the largest compartment with two large sides sealed at the perimeter, and the second compartment is smaller and covers less than about 75% or less than about 50% of the surface area of ​​one side of the first compartment. If a third compartment is present, the above structure may be the same, but the second and third compartments cover less than about 60%, or less than about 50%, or less than about 45% of the surface area of ​​one side of the first compartment.

[0037] The articles, pouches, and / or packets of the present disclosure may comprise one or more different films. For example, if the pouch contains a single compartment, it may be made from one wall folded and sealed at the edges, or alternatively, two walls sealed together at the edges. If the pouch contains multiple compartments, it may be made from one or more films, such that any given packet compartment may contain walls made from a single film or multiple films having different compositions. A multi-compartment pouch may include at least three walls: an outer top wall, an outer bottom wall, and a partition wall. The outer top wall and the outer bottom wall are generally opposed and form the outside of the pouch. The partition wall is on the interior of the pouch and is secured to the generally opposed outer walls along a seal line. The partition wall separates the interior of the multi-compartment pouch into at least a first and a second compartment.

[0038] Articles such as pouches and packets can be made using any suitable equipment and methods. For example, single compartment pouches can be made using vertical fill, horizontal fill, or rotary drum fill techniques commonly known in the art. Such processes can be either continuous or intermittent. The film can be moistened and / or heated to enhance its malleability. The method can also involve the use of a vacuum to draw the film into a suitable mold. The vacuum to draw the film into the mold can be applied for about 0.2 to about 5 seconds, or about 0.3 to about 3, or about 0.5 to about 1.5 seconds after the film is placed on the horizontal portion of the surface. The vacuum can be such as to result in an applied pressure in the range of, for example, 10 mbar to 1000 mbar, or in the range of 100 mbar to 600 mbar.

[0039] Molds capable of producing articles such as packets can have any shape, length, width, and depth, depending on the size of the pouch required. Molds can also differ in size and shape from one another, if desired. For example, the volume of the final pouch can be about 5 ml to about 300 ml, or about 10 to 150 ml, or about 20 to about 100 ml, with the mold size adjusted accordingly.

[0040] The pouch can include first and second sealed compartments. The second compartment can be in a generally overlapping relationship with the first sealed compartment such that the second sealed compartment and the first sealed compartment share an interior partition of the pouch.

[0041] The pouch can include first and second compartments, and further includes a third sealed compartment in a generally overlapping relationship with the first sealed compartment such that the third sealed compartment and the first sealed compartment share an interior partition of the pouch.

[0042] The first composition and the second composition can be selected from one of the following combinations: liquid, liquid and liquid, powder, powder, powder and powder, liquid. The first, second and third compositions can be selected from one of the following combinations: solid, liquid, liquid, liquid, liquid, liquid, liquid, solid, liquid, solid, liquid, solid and solid, solid, solid.

[0043] A single compartment or multiple sealed compartments may contain the composition. Multiple compartments may each contain the same or different compositions. The composition may be in a form selected from a liquid, a solid, or a combination thereof. The composition may be in the form of a liquid, a solid, a powder, beads, or a mixture thereof.

[0044] The composition may be a household care composition, for example a household care composition selected from the group consisting of light duty liquid detergent compositions, heavy duty liquid detergent compositions, hard surface cleaning compositions including manual dishwashing compositions or automatic dishwashing compositions, detergent gels commonly used in laundry, bleaching compositions, laundry additives, fabric enhancer compositions, shampoos, body washes, other personal care compositions, and mixtures thereof.

[0045] The composition may be a non-household care composition, such as a composition selected from agricultural compositions, automotive compositions, aviation compositions, food and nutritional compositions (including functional foods), industrial compositions, livestock compositions, marine compositions, medical compositions, commercial compositions, military and paramilitary compositions, office compositions, recreational and park compositions, and pet compositions, including cleaning and detergent compositions suitable for any such use. Other non-consumer compositions and uses include mining compositions (coal, metals, and non-metals), landscaping compositions, petroleum and oil compositions, compositions labeled for industrial use, and compositions labeled for professional use. Among these, non-consumer compositions for selected embodiments include agricultural compositions, aviation compositions, functional foods, industrial compositions, livestock compositions, marine compositions, medical compositions, commercial compositions, military and paramilitary compositions, office compositions, and compositions labeled for recreational and parks, mining compositions (coal, metals, and non-metals), landscaping compositions, petroleum and oil compositions, compositions labeled for industrial use, and compositions labeled for professional use only.

[0046] The pouch can be made according to any suitable method. For example, the method can include providing a water-soluble film as described herein, forming the film to form a tear compartment, providing a composition in the tear compartment, and sealing the tear compartment, for example, with a second water-soluble film to form a pouch having a sealed compartment with the composition enclosed therein.

[0047] The different compartments of the multi-compartment pouch may be made together in a side-by-side fashion, and the resulting joined pouch may or may not be separated by cutting. Alternatively, the compartments may be made separately.

[0048] The pouch may be made according to a process including the steps of a) forming a first compartment (as described above), b) forming recesses in some or all of the sealed compartments formed in step (a) to produce a second molded compartment superimposed on the first compartment, c) filling and sealing the second compartment with a third film, d) sealing the first, second and third films, and e) cutting the film to produce a multi-compartment pouch. The recesses formed in step (b) may be achieved by applying a vacuum to the compartments prepared in step (a).

[0049] The second and / or third compartment(s) may be made in separate steps and then combined with the first compartment, as described in European Patent Application No. 08101442.5 or WO2009 / 152031.

[0050] The pouches can be made according to a process including: a) forming a first compartment using a first film on a first forming machine, optionally using heat and / or vacuum; b) filling the first compartment with a first composition; c) deforming a second film on a second forming machine, optionally using heat and vacuum, to create a second and optionally a third shaped compartment; d) filling the second and optionally the third compartment; e) sealing the second and optionally the third compartment using a third film; f) placing the sealed second and optionally the third compartment onto the first compartment; g) sealing the first, second and optionally the third compartment; and h) cutting the film to produce a multi-compartment pouch.

[0051] The first and second forming machines may be selected based on their suitability for carrying out the above process. The first forming machine may be a horizontal forming machine and the second forming machine may be, for example, a rotary drum forming machine located above the first forming machine.

[0052] It should be appreciated that by using an appropriate supply station, it may be possible to produce multi-compartment pouches incorporating multiple different or unique compositions and / or different or unique liquid, gel or paste compositions.

[0053] The film and / or pouch may be sprayed or dusted with a suitable material, such as an active agent, a lubricant, an aversive agent, or a mixture thereof. The film and / or pouch may be printed, for example, with an ink and / or an active agent.

[0054] Water-soluble film The present disclosure relates to a pouch comprising a water-soluble film. The water-soluble film can at least partially or completely encapsulate a household care composition or a non-household care composition. The film described herein comprises a polyvinyl alcohol (PVOH) resin blend. The PVOH resin blend comprises at least a first PVOH polymer and a second PVOH polymer, as described in more detail below.

[0055] Polyvinyl alcohol homopolymer The water-soluble film may comprise a blend of polyvinyl alcohol (PVOH) polymers, including homopolymers thereof (e.g., containing substantially only vinyl alcohol and vinyl acetate monomer units, if present) and copolymers thereof (e.g., containing vinyl alcohol and optionally one or more other monomer units in addition to vinyl acetate units). PVOH is generally a synthetic resin prepared by the alcoholysis, commonly referred to as hydrolysis or saponification, of polyvinyl acetate.

[0056] Some water-soluble polymeric films used to make articles such as pouches (e.g., that can contain household or non-household care compositions therein) dissolve incompletely in water during normal use (e.g., thereby leaving a film residue on the article being washed), such as during the laundry wash cycle of a packet containing a laundry-related composition.

[0057] Water-soluble polymer films based on PVOH can undergo changes in dissolution characteristics. The acetate groups in copoly(vinyl acetate vinyl alcohol) polymers are known to those skilled in the art to be hydrolyzable by either acid hydrolysis or alkaline hydrolysis. As the degree of hydrolysis increases, polymer compositions made from PVOH homopolymer resins have increased mechanical strength but decreased solubility at lower temperatures (e.g., requiring hot water temperatures for complete dissolution). Thus, when a PVOH homopolymer resin is exposed to an alkaline environment (e.g., obtained from laundry bleach additives), the resin can change from quickly and completely dissolving in a given aqueous environment (e.g., cold water medium) to slowly and / or incompletely dissolving in the aqueous environment, potentially resulting in undissolved polymer residues at the end of the wash cycle. This is an inherent weakness in the application of films based solely on vinyl acetate / alcohol copolymers, as represented by commercially available PVOH homopolymer resins.

[0058] PVOH copolymer resins with pendant carboxyl groups, such as vinyl alcohol / hydrolyzed methyl acrylate sodium salt resins, can form lactone rings between adjacent pendant carboxyl and alcohol groups, thus reducing the water solubility of the PVOH copolymer resin. In the presence of a strong base, such as a laundry bleach additive, the lactone rings can open over a period of weeks in relatively warm (ambient) and humid conditions (e.g., via a lactone ring-opening reaction forming corresponding highly water-soluble pendant carboxyl and alcohol groups). Thus, contrary to the effect observed with PVOH homopolymer films, it is believed that such PVOH copolymer films may become more soluble during storage due to chemical interactions between the film and the alkaline composition inside the pouch. As a result, as they age, the packets may become increasingly prone to premature dissolution during high temperature wash cycles (nominally 40°C), which in turn may reduce the effectiveness of certain laundry actives due to the presence of bleach and the resulting pH effects. Alternatively, when in contact with compositions of substantially neutral pH, e.g., 7-8, the amount of lactone rings may increase, rendering the film potentially insoluble under lower temperature applications.

[0059] At least some or all of the problems described herein can be addressed by providing a pouch comprising a film having a carefully selected PVOH resin blend.The present disclosure relates to a pouch comprising a water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend and, optionally, one or more additional components, such as plasticizers, fillers, surfactants, and other additives, which are described in more detail below.

[0060] Fully hydrolyzed PVOH is a strongly hydrogen-bonded, highly crystalline polymer that dissolves only in hot water above about 140° F. (about 60° C.) when substantially all of the acetate groups are converted to alcohol groups. If a sufficient number of acetate groups are allowed to remain after hydrolysis of polyvinyl acetate, the PVOH polymer is known as partially hydrolyzed, has weaker hydrogen bonds, is less crystalline, and is soluble in cold water below about 50° F. (10° C.). Moderately cold or hot water soluble films can include, for example, moderately partially hydrolyzed PVOH (e.g., having a degree of hydrolysis of about 94% to about 98%), which is readily soluble only in hot water, e.g., rapidly dissolving at temperatures above about 40° C. Both fully and partially hydrolyzed PVOH types are commonly referred to as PVOH homopolymers, although the partially hydrolyzed types are technically vinyl alcohol-vinyl acetate copolymers.

[0061] The degree of hydrolysis (DH) of the PVOH polymer included in the water-soluble film of the present disclosure can range from about 75% to about 99% (e.g., about 79% to about 92%, about 86.5% to about 89%, or about 88% for cold water soluble compositions, about 90% to about 99%, about 92% to about 99%, or about 95% to about 99%). As the degree of hydrolysis decreases, films made from the resin have less mechanical strength at temperatures below about 20° C., but more rapid solubility. As the degree of hydrolysis increases, films made from the polymer tend to be mechanically stronger and less thermoformable and / or dissolvable, especially at lower wash temperatures.

[0062] The degree of hydrolysis of the PVOH can be selected such that the water solubility of the polymer is temperature dependent, thus also affecting the solubility of the film made from the polymer, any compatibilizer polymer, and additional components. In one alternative, the film is cold water soluble. Cold water soluble films that are soluble in water at temperatures below 10°C can include PVOH with a degree of hydrolysis in the range of about 75% to about 90%, or in the range of about 80% to about 90%, or in the range of about 85% to about 90%. In another alternative, the film is hot water soluble. Hot water soluble films that are soluble in water at temperatures of at least about 60°C can include PVOH with a degree of hydrolysis of at least about 98%.

[0063] The water soluble polymer (e.g., a PVOH resin blend, alone or in combination with other water soluble polymers) may be included in the film in an amount ranging from about 30%, or about 40%, or about 50%, or about 60%, and / or to about 70%, or about 80%, or about 90%, or about 95% by weight. For example, the PVOH resin blend may be present in the water soluble film in an amount ranging from about 30%, or about 40%, or about 50%, or about 60%, and / or to about 70%, or about 80%, or about 90%, or about 95% by weight of the film.

[0064] The water-soluble film may contain at least about 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, or 90% by weight, and / or up to about 60%, 70%, 80%, 90%, 95%, or 99% by weight of the PVOH resin blend. Preferably, the resin blend is present in the film at from about 50% to about 80%, or from about 60% to about 75%.

[0065] The first PVOH polymer may be present in the water-soluble film in an amount ranging from about 10% to about 90% by weight, or from about 10% to about 70% by weight, or from about 10% to about 60% by weight, or from about 10% to about 35% by weight, or from about 20% to about 50% by weight, or from about 30% to about 40% by weight, or from about 65% to about 80% by weight, or from about 65% to about 95% by weight, or from greater than about 65% to about 95% by weight, or from about 70% to about 90% by weight of the total PVOH polymer in the film (i.e., based on the PVOH resin blend weight). For example, the first PVOH polymer can be present in an amount of at least about 10%, 20%, 30%, 35%, 40%, 50%, 60%, 65%, and / or up to about 90%, 80%, 70%, 66%, 65%, 60%, 50%, 40%, 35%, 30%, 20%, or 10% by weight of the total PVOH polymer in the film. The aforementioned concentrations of the first PVOH polymer can alternatively or additionally relate to the total water soluble polymer content in the film, PVOH, or otherwise.

[0066] The second PVOH polymer can be present in an amount ranging from about 10% to about 90% by weight, or from about 10% to about 30% by weight, or from about 10% to about 35% by weight, or from about 10% to less than about 35% by weight, or from about 20% to about 45% by weight, or from about 30% to about 90% by weight, or from about 40% to about 90% by weight, or from about 50% to about 80% by weight, or from about 60% to about 70% by weight, or from about 65% to about 95% by weight, or from about 10% to about 34% by weight of the total PVOH polymer in the film (i.e., based on the PVOH resin blend weight). For example, the second PVOH polymer can be present in an amount of at least 10%, 20%, 30%, 35%, 40%, 50%, 60%, or 65% by weight, and / or up to about 90%, 80%, 70%, 65%, 60%, 50%, or 40%, or 35%, or 34% by weight of the total PVOH polymer in the film. In one type of embodiment, the second PVOH polymer can be present in an amount that, together with the concentration of the first PVOH polymer described above, adds up to 100%. The aforementioned concentration of the second PVOH polymer can alternatively or additionally relate to the total water-soluble polymer content in the film, PVOH, or otherwise.

[0067] The water soluble polymer (e.g., PVOH resin blends, alone or in combination with other water soluble polymers) can be included in the film in an amount ranging, for example, from about 30% by weight, or from about 50% to about 90% by weight, or from about 50% to about 95% by weight.

[0068] The weight ratio of the amount of total water-soluble polymer compared to the combined amount of all plasticizers, including water, compatibilizers, and secondary additives, can range, for example, from about 0.5 to about 18, from about 0.5 to about 15, from about 0.5 to about 9, from about 0.5 to about 5, from about 1 to about 3, or from about 1 to about 2. Preferably, the ratio is from about 1 to about 3, more preferably from about 1.3 to about 2.5. The particular amounts of plasticizers and other non-polymeric components can be selected in certain embodiments based on the intended use of the water-soluble film to adjust film flexibility and provide processing benefits in light of desired mechanical film properties.

[0069] As described in more detail below, PVOH polymers can be characterized in terms of their viscosity, the value of which generally correlates with the molecular weight of the polymer. The viscosity of the polymer is determined by measuring the freshly made solution using a Brookfield LV type viscometer with a UL adapter, as described in the British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method. It is international practice to state the viscosity of a 4% aqueous polyvinyl alcohol solution at 20°C. It should be understood that the polymer viscosity indicated herein refers to the viscosity of a 4% aqueous solution of the water-soluble polymer at 20°C, unless otherwise specified. For reference, a first PVOH polymer can be indicated as having a first 4% solution viscosity (μ1) at 20°C, and a second PVOH polymer can be indicated as having a second 4% solution viscosity (μ2) at 20°C.

[0070] The first PVOH polymer may be characterized by a 4% solution viscosity (μ1) at 20° C. of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP, or 14 cP to 20 cP. The first viscosity μ1 may range from about 4 cP to about 24 cP (e.g., at least about 4, 8, 10, or 12 cP, and / or up to about 12, 16, 20, or 24 cP, such as about 10 cP to about 16 cP or about 10 cP to about 20 cP). The second PVOH polymer may be characterized by a 4% solution viscosity (μ2) at 20° C. of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP. The second viscosity μ2 can range from about 4 cP to about 24 cP (e.g., at least about 4, 8, 10, or 12 cP, and / or up to about 12, 16, 20, or 24 cP, such as about 10 cP to about 16 cP or about 10 cP to about 20 cP). The second PVOH polymer can have a second 4% solution viscosity (μ2) at 20° C. of about 20 cP or less (e.g., at least about 4, 8, 10, or 12 cP, and / or up to about 12, 16, or 20 cP). The absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer can be in the range of 0 cP to about 10 cP, such as about 0 cP to about 5 cP, or about 0 cP to about 2 cP, preferably about 2 cP to about 8 cP, or at least about 0, 0.5, 1, or 2 cP, and / or up to about 1, 2, 5, or 10 cP.

[0071] It is well known in the art that the viscosity of a water-soluble polymer (PVOH or other) correlates with the weight average molecular weight (Mw) of the same polymer, and viscosity is often used as a proxy for (Mw). Thus, the weight average molecular weight of the water-soluble polymers, including the first PVOH copolymer and the second PVOH polymer, can range, for example, from about 30,000 to about 175,000, or from about 30,000 to about 100,000, or from about 55,000 to about 85,000.

[0072] The PVOH resin blend can consist essentially of a first PVOH polymer and a second PVOH polymer.

[0073] When the PVOH resin blend includes three or more PVOH resins selected from PVOH polymer and PVOH copolymer resins, the aforementioned viscosity values ​​can apply to each PVOH polymer or PVOH copolymer individually, and the aforementioned viscosity differentials can apply to each PVOH polymer / PVOH copolymer pair in the PVOH resin blend and the resulting water-soluble film.

[0074] As mentioned above, the PVOH polymers may be characterized by a degree of hydrolysis. The first PVOH polymer may be characterized by a degree of hydrolysis of 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%. The second PVOH polymer may be characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0075] The water-soluble film may have a residue value of about 48% by weight or less as measured by a dissolution chamber test. The water-soluble film may have an average tensile strength value of at least about 33 MPa as measured by a tensile strength test. The water-soluble film may have an average tensile strength value of at least about 12 N / mm as measured by a modulus test. 2 The modulus value may be 0.01 to 0.05, and the test methods for each are provided herein.

[0076] The specific chemistries of the first and second PVOH polymers are described in more detail below.

[0077] a. A first PVOH polymer The PVOH resin blends described herein can include a first PVOH polymer. The first PVOH polymer can include a first anionic monomer unit. The first PVOH polymer can be a PVOH terpolymer that includes vinyl alcohol monomer units, vinyl acetate monomer units (i.e., if not fully hydrolyzed), and a single type of anionic monomer unit (e.g., where a single type of monomer unit can include equivalent acid forms, salt forms, and optionally residual ester forms of anionic monomer units). A PVOH copolymer can include two or more types of anionic monomer units.

[0078] The first anionic monomer unit may be derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0079] The anionic monomer units in the first PVOH polymer may be carboxylated anionic monomer units. As used herein, "carboxylated anionic monomer units" includes vinyl polymerized units corresponding to monocarboxylic acid vinyl monomers, their esters and anhydrides, dicarboxylic monomers having a polymerizable double bond, their esters and anhydrides, and salts, preferably alkali metal salts, of any of the foregoing.

[0080] Examples of suitable carboxylated anionic monomer units include vinyl polymerized units corresponding to vinyl anionic monomers including vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, alkali metal salts of the foregoing (e.g., sodium, potassium, or other alkali metal salts), esters of the foregoing (e.g., methyl, ethyl, or other C1-C4 or C6 alkyl esters), and combinations thereof (e.g., multiple types of anionic monomers or equivalent forms of the same anionic monomer). The carboxylated anionic monomer units may be derived from maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof. The carboxylated anionic monomer units may be derived from monoalkyl maleate monomer units. The monoalkyl maleate monomer unit may be derived from a member of the group consisting of monomethyl maleate, its alkali metal salts (eg, the sodium salt), and combinations thereof.

[0081] One or more anionic monomer units can be incorporated or present in the first PVOH polymer in a given amount.Typically, as anionic monomer content increases, the solubility of PVOH polymer resin, resin blend, and / or film made from such resin or resin blend also increases.The film that comprises PVOH polymer with higher anionic monomer content can also have relatively greater adhesion, which can indicate greater sealability.However, water-soluble film with too high relative adhesion may be undesirable, since it is difficult to convert into pouch.

[0082] The amount of anionic monomer units may be characterized in terms of the molar content (e.g., expressed in mole %) of the anionic monomer units in the PVOH polymer. The one or more anionic monomer units may be present in the first PVOH polymer, individually or collectively, in an amount ranging from about 1 mol % to about 5 mol %, or from about 2 mol % to about 4 mol %, or from about 2 mol % to about 5 mol %, or from about 3 mol % to about 5 mol %, or from about 3.5 mol % to about 4.5 mol %, or from about 4 mol % to about 4.5 mol %. The one or more anionic monomer units may be present in the first PVOH polymer in an amount ranging from about 1 mol % to about 4 mol %, or from about 1 mol % to about 3 mol %. The anionic monomer unit(s) may be present in the first PVOH polymer in an amount of at least about 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, or 4.0 mol %, and / or up to about 6.0, 5.5, 5.0, 4.5, 4.0, 3.5, 3.0, or 2.5 mol %.

[0083] Alternatively or additionally, the anionic monomer unit(s) may be characterized in terms of the anionic monomer unit(s) present in the PVOH film, for example, as the molar content (mol %) relative to the total amount of PVOH polymers in the film (e.g., the total of PVOH polymers, including homopolymer(s) and copolymer(s) in the PVOH resin blend). The anionic monomer unit(s) may be present in the water-soluble film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymers in the film. The anionic monomer unit(s) may be present in the film in an amount of at least about 0.5, 0.75, 1.0, or 1.2 mol %, and / or up to about 5.0, 4.5, 4.0, 3.0, 2.5, 2.0, or 1.7 mol % of the total PVOH polymers in the film. For example, a first PVOH polymer containing (carboxylated) anionic monomer units may be blended with a second PVOH polymer, such as a homopolymer, in about a 30% / 70% blend by weight to about a 70% / 30% blend by weight to achieve an average blend anionic monomer unit content of about 0.5 mol % to about 3 mol % of the total PVOH polymer. The aforementioned anionic monomer unit content may alternatively or additionally be applied with respect to the total water soluble polymer content in the film, PVOH, or otherwise.

[0084] The first PVOH polymer may be present in an amount ranging from about 10% to about 90% by weight of all PVOH polymers in the film.

[0085] b. A second PVOH polymer The PVOH resin blends described herein can include a second PVOH polymer selected from PVOH polymers including (a) a PVOH homopolymer consisting of a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, or (b) vinyl alcohol monomer units, and optionally vinyl acetate units.

[0086] The second PVOH polymer can be a PVOH polymer that comprises a second anionic monomer unit. The second anionic monomer unit can be different from the first anionic monomer unit, or they can be the same. If the first and second anionic monomer units are the same, the first and second PVOH polymers differ in some respect, for example, in terms of their respective viscosities or in terms of the incorporation level of each anionic monomer unit.

[0087] The second anionic monomer unit may be selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropane sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, 2-methylacrylamido-2-methylpropane sulfonic acid, 2-sulfoethyl acrylate, alkali metal salts of the above, esters of the above, and combinations thereof. The second anionic monomer unit may be selected from the group consisting of acrylamidomethylpropane sulfonic acid, alkali metal salts thereof, and combinations thereof. The first anionic monomer unit in the first PVOH polymer may be selected from the group consisting of monomethyl maleate, alkali metal salts thereof, and combinations thereof, and the second monomer unit in the second PVOH polymer may be selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof. The first PVOH polymer may be present in the PVOH blend in a range of about 50% to about 90% by weight, preferably about 70% to about 90% by weight, of the total PVOH polymer in the blend, the first anionic monomer unit being derived from a member selected from the group consisting of monomethyl maleate, alkali metal salts thereof, and combinations thereof, and the second PVOH polymer may be present in the PVOH blend in a range of about 10% to about 50% by weight, preferably about 10% to about 30% by weight, of the total PVOH polymer in the blend, the second monomer unit being derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0088] The second anionic monomer unit may be present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer. The second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 5.0 mol %, or from about 0.5 mol % to about 4.5 mol %, or from about 1 mol % to about 3 mol % of the total PVOH polymer in the film.

[0089] The first PVOH polymer may have a first incorporation level (a1) of a first anionic monomer unit, and the second PVOH polymer may have a second incorporation level (a2) of a second anionic monomer unit. When the first and second anionic monomer units are the same, the absolute value of |a1-a2| may be greater than 0. The value of (a1-a2) may be greater than 0. a1 ranges from about 1 mol % to about 5 mol %, preferably from about 1 mol % to about 3 mol %, of the first PVOH polymer, a2 ranges from about 1 mol % to about 5 mol %, preferably from about 1 mol % to about 3 mol %, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, may range from about 0 mol % to about 3 mol %, or from about 1 mol % to about 3 mol %.

[0090] The first anionic monomer unit and the second anionic monomer unit together may be present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0091] The second PVOH polymer may be a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and, optionally, vinyl acetate units.

[0092] The second PVOH polymer may be characterized by a 4% solution viscosity (μ2) at 20° C. of about 3.0 to about 40 cP, or about 7 cP to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP. The first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C. and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer may range from 0 cP to about 10 cP, preferably from 2 cP to 8 cP.

[0093] The second PVOH polymer may be characterized by a degree of hydrolysis of from about 60% to about 99%, preferably from about 80% to about 98%, preferably from about 83% to about 95%, preferably from about 85% to about 92%.

[0094] The second PVOH polymer may be present in an amount ranging from about 10% to about 90%, preferably 30% to 80%, and more preferably 50% to 70% by weight of the total PVOH polymer in the film.

[0095] The first PVOH polymer may be present in a range of about 20% to about 60%, or about 30% to about 40%, or about 65% to about 90%, or greater than 65% to about 90% by weight of the total PVOH polymers in the blend, the first anionic monomer units of the first PVOH polymer being derived from a member selected from the group consisting of monomethyl maleate, alkali metal salts thereof, and combinations thereof, and the second PVOH polymer is a PVOH homopolymer characterized by a 4% solution viscosity (μ2) at 20° C. of about 10 cP to about 30 cP and present in the PVOH resin blend in a range of about 10% to about 35%, or about 10% to less than 35%, or 40% to about 80%, or about 60% to about 70% by weight of the total PVOH polymers in the blend.

[0096] In another type of embodiment, the first PVOH polymer is present in the PVOH blend in a range of from about 30% to less than 70%, or from about 30% to about 50%, or from about 65% to about 90%, or from greater than 65% to about 90% by weight of the total PVOH polymers in the blend, the first anionic monomer units of the first PVOH polymer are derived from a member selected from the group consisting of monomethyl maleate, alkali metal salts thereof, and combinations thereof, and the second PVOH polymer has a viscosity of from about 4 cP to about 3 0 cP, or about 4 cP to about 18 cP, and the PVOH homopolymer present in the PVOH resin blend is in the range of about 10% to about 35%, or about 10% to less than 35%, or greater than 30% to about 70%, or about 50% to about 70% by weight of the total PVOH polymer in the blend, and the total blend of PVOH polymers has a weight average viscosity in the range of about 10 cP to about 30 cP, or about 12 cP to about 20 cP, or about 12 cP to about 18 cP.

[0097] Other film ingredients / properties In addition to the polyvinyl alcohol polymers discussed above, the water-soluble films of the present disclosure can include other ingredients.

[0098] The film of the present disclosure can include other water-soluble polymers.Other water-soluble polymers for use in addition to the PVOH polymer and PVOH copolymer in the blend can include, but are not limited to, modified polyvinyl alcohol, polyacrylate, water-soluble acrylate copolymer, polyvinylpyrrolidone, polyethyleneimine, pullulan, water-soluble natural polymers including, but are not limited to, guar gum, acacia gum, xanthan gum, carrageenan, and starch, water-soluble polymer derivatives including, but are not limited to, modified starch, ethoxylated starch, and hydroxypropylated starch, copolymers of the foregoing, and combinations of any of the foregoing.Furthermore, other water-soluble polymers can include polyalkylene oxides, polyacrylamides, polyacrylic acids and their salts, cellulose, cellulose ethers, cellulose esters, cellulose amides, polyvinyl acetates, polycarboxylic acids and their salts, polyamino acids, polyamides, gelatin, methylcellulose, carboxymethylcellulose and its salts, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, and polymethacrylates. Such water-soluble polymers, whether PVOH or not, are commercially available from a variety of sources. Any of the aforementioned water-soluble polymers are generally suitable for use as the film-forming polymer. Generally, the water-soluble film can include copolymers and / or blends of the aforementioned resins.

[0099] Water-soluble polymers for use in the films described herein, including but not limited to PVOH polymers and PVOH copolymers, may be characterized by a viscosity ranging from, for example, about 3.0 to about 27.0 cP, about 4.0 to about 24.0 cP, about 4.0 to about 23.0 cP, about 4.0 cP to about 15 cP, or about 6.0 to about 10.0 cP. The viscosity of the polymer is determined by measuring the freshly made solution using a Brookfield LV type viscometer with a UL adapter, as described in the British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method. It is international practice to state the viscosity of a 4% aqueous solution of polyvinyl alcohol at 20°C. It is to be understood that the polymer viscosity given herein refers to the viscosity of a 4% aqueous solution of the water-soluble polymer at 20°C, unless otherwise specified.

[0100] It is well known in the art that the viscosity of a water-soluble polymer (PVOH or other) correlates with the weight average molecular weight (Mw) of the same polymer, and viscosity is often used as a surrogate for Mw. Thus, the weight average molecular weight of the water-soluble polymers, including the first PVOH copolymer and the second PVOH polymer, can range, for example, from about 30,000 to about 175,000, or from about 30,000 to about 100,000, or from about 55,000 to about 85,000.

[0101] The water-soluble film may contain other auxiliary and processing aids in amounts suitable for their intended purpose, such as, but not limited to, plasticizers, plasticizer compatibilizers, surfactants, lubricants, release agents, fillers, extenders, crosslinkers, antiblocking agents, antioxidants, detackifiers, antifoaming agents, nanoparticles such as layered silicate nanoclays (e.g., sodium montmorillonite), bleaching agents (e.g., sodium disulfite, sodium bisulfite, etc.), bittering agents (e.g., denatonium salts such as denatonium benzoate, denatonium saccharides, and denatonium chloride, octaacetylsucrose, flavonoids such as quinine, quercetin, and naringen, and quassinoids such as quassin and brucine), and aversive agents such as pungency (e.g., capsaicin, piperine, allyl isothiocyanate, and resinferratoxin), and other functional ingredients. Films containing plasticizers are beneficial. The amount of such agents, individually or collectively, can be up to about 50%, 20%, 15%, 10%, 5%, 4%, and / or at least 0.01%, 0.1%, 1%, or 5% by weight. Preferably, the total amount of such adjuvants and processing aids in the film is from about 20% to about 50%, more preferably from about 25% to about 40%.

[0102] Plasticizers include, but are not limited to, glycerin, diglycerin, sorbitol, ethylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols up to 400 MW, neopentyl glycol, trimethylolpropane, polyether polyols, sorbitol, 2-methyl-1,3-propanediol, ethanolamine, and mixtures thereof. Preferred plasticizers are glycerin, sorbitol, triethylene glycol, propylene glycol, dipropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, or combinations thereof. The total amount of plasticizer can range from about 1% to about 40% by weight, or 10% to about 40% by weight, or about 15% to about 35% by weight, or about 20% to about 30% by weight, for example, about 25% by weight, based on the total film weight. A combination of glycerin, dipropylene glycol, and sorbitol can be used. Alternatively, a combination of glycerin, trimethylolpropane, and sorbitol can be used. Optionally, glycerin can be used in an amount of about 5% to about 30% by weight, or 5% to about 20% by weight, for example, about 13% by weight. Optionally, dipropylene glycol or trimethylolpropane can be used in an amount of about 1% to about 20% by weight, or about 3% to about 10% by weight, for example, about 6% by weight. Optionally, sorbitol can be used in an amount of about 1% to about 20% by weight, or about 2% to about 10% by weight, for example, about 5% by weight. The particular amount of plasticizer can be selected in certain embodiments based on the desired film flexibility and processability properties of the water-soluble film. At low plasticizer levels, the film may be brittle, difficult to process, or prone to breakage. At high plasticizer levels, the film may be too soft, weak, or difficult to process for the desired application.

[0103] Suitable surfactants may include nonionic, cationic, anionic, and zwitterionic classes.Suitable surfactants include, but are not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols, and alkanolamides (nonionic), polyoxyethylenated amines, quaternary ammonium salts, and quaternized polyoxyethylenated amines (cationic), as well as amine oxides, N-alkyl betaines, and sulfobetaines (zwitterionic).Other suitable surfactants include dioctyl sodium sulfosuccinate, lactylated fatty acid esters of glycerol and propylene glycol, lactyl esters of fatty acids, sodium alkyl sulfates, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, and acetylated esters of fatty acids, as well as combinations thereof. The amount of surfactant in the water-soluble film can range from about 0.1% to 2.5% by weight, optionally from about 1.0% to 2.0% by weight.

[0104] Suitable lubricants / release agents may include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty esters, fatty amines, fatty amine acetates, and fatty amides.Preferred lubricants / release agents are fatty acids, fatty acid salts, and fatty amine acetates.The amount of lubricant / release agent in the water-soluble film may range from about 0.02% to about 1.5% by weight, optionally from about 0.1% to about 1% by weight.

[0105] The film may include an aversive agent, such as a bitter agent, e.g., denatonium benzoate and / or its derivatives. The aversive agent may be mixed with the polymeric material and / or other additives prior to the creation of the film (e.g., prior to casting or extrusion of the film). Alternatively or additionally, the aversive agent may be added to the film or pouch after it has been formed, e.g., by sprinkling, printing, spraying, or other coating.

[0106] Suitable fillers / bulking agents / antiblocking agents / detackifiers include, but are not limited to, starch, modified starch, crosslinked polyvinylpyrrolidone, crosslinked cellulose, microcrystalline cellulose, silica, metal oxides, calcium carbonate, talc, and mica. Preferred materials are starch, modified starch, and silica. The amount of filler / bulking agent / antiblocking agent / detackifier in the water-soluble film can range from about 0.1% to about 25%, or from about 1% to about 10%, or from about 2% to about 8%, or from about 3% to about 5% by weight. In the absence of starch, one preferred range of suitable fillers / bulking agents / antiblocking agents / detackifiers is from about 0.1% or 1% to about 4% or 6%, or from about 1% to about 4%, or from about 1% to about 2.5% by weight.

[0107] The water-soluble film may further have a residual moisture content of at least 4% by weight, preferably in the range of about 4 to about 10% by weight, as measured by Karl Fischer titration.

[0108] The film may be opaque, transparent, or translucent. The film may include printed areas. The areas of printing may cover a continuous portion of the film or may cover only a portion of it. The areas of printing may include ink, pigment, dye, blue agent, or mixtures thereof. The areas of printing may include a single color, or may include multiple colors, perhaps even three colors. The printing may be present as a layer on the surface of the film, or may at least partially penetrate the film. The film includes a first side and a second side. The areas of printing may be achieved using standard techniques, such as flexographic printing or inkjet printing. The areas of printing may be on one or both sides of the film. Alternatively, ink or pigment may be added during the manufacture of the film, such that all or at least a portion of the film is colored.

[0109] Other features of water-soluble polymeric compositions such as films can be found in U.S. Patent Application Publication No. 2011 / 0189413 and U.S. Patent Application No. 13 / 740,053, both of which are incorporated by reference herein in their entireties.

[0110] How the film is made The water-soluble film can be formed, for example, by mixing, co-casting, or welding the first PVOH copolymer and the second PVOH polymer according to the type and amount described herein, together with any preferred secondary additives described herein. If the polymers are mixed first, the water-soluble film is preferably formed by casting the resulting mixture (e.g., together with other plasticizers and other additives) to form a film. If the polymers are welded, the water-soluble film can be formed, for example, by solvent or heat welding. The water-soluble film can be formed by extrusion, for example, blown extrusion.

[0111] The film can have any suitable thickness. For example, the film can have a thickness in the range of about 5 to about 200 μm, or about 20 to about 100 μm, or about 40 to about 85 μm, for example, 76 μm. When the pouch is made, for example, by thermoforming as described below, the film is deformed, and as a result, the film thickness of the pouch may change. Thus, the undeformed thickness of the film can be determined before deformation and / or pouch formation.

[0112] Optionally, the water-soluble film may be a self-supporting film consisting of one layer or multiple similar layers.

[0113] The films described herein can also be used to make articles such as packets with two or more compartments made of the same film or in combination with films of other polymeric materials. The additional film can be obtained, for example, by casting, blowing, extrusion, or blow-extrusion of the same or different polymeric materials known in the art. Polymers, copolymers, or derivatives thereof suitable for use as additional films can be selected from polyvinyl alcohol, polyvinylpyrrolidone, polyalkylene oxide, polyacrylic acid, cellulose, cellulose ethers, cellulose esters, cellulose amides, polyvinyl acetate, polycarboxylic acids and salts, polyamino acids or peptides, polyamides, polyacrylamides, maleic acid / acrylic acid copolymers, polysaccharides including starch and gelatin, natural gums such as xanthan, and carrageenan. For example, the polymer can be selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, sodium carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, polymethacrylates, and combinations thereof, or can be selected from polyvinyl alcohol, polyvinyl alcohol copolymers, and hydroxypropylmethylcellulose (HPMC), and combinations thereof. One contemplated class of films is characterized by the level of polymer in the pouch material, for example, the PVOH resin blend is at least 60%, as described above.

[0114] The weight ratio of the amount of total water-soluble polymer compared to the combined amount of all plasticizers, compatibilizers, and secondary additives can range, for example, from about 0.5 to about 18, from about 0.5 to about 15, from about 0.5 to about 9, from about 0.5 to about 5, from about 1 to about 3, or from about 1 to about 2. Preferably, the ratio is from about 1 to about 3, more preferably from about 1.3 to about 2.5. The particular amounts of plasticizers and other non-polymeric components can be selected in certain embodiments based on the intended use of the water-soluble film to adjust film flexibility and provide processing benefits in light of desired mechanical film properties.

[0115] Compositions, including household care compositions The present disclosure relates in part to household and non-household care compositions. The household and non-household care compositions of the present disclosure can be at least partially enclosed in a compartment by a water-soluble film. The multi-compartment pouch can contain the same or different compositions in each separate compartment.

[0116] Non-limiting examples of useful compositions (e.g., household and non-household care compositions) include light duty and heavy duty liquid detergent compositions, hard surface cleaning compositions including manual or automatic dishwashing compositions, detergent gels commonly used in laundry, bleaching and laundry additives, fabric enhancer compositions (such as fabric softeners), shampoos, body washes, and other personal care compositions. The compositions used in the pouches may take the form of liquids, gels, solids, or powders. Liquid compositions may include solids. Solids may include powders or aggregates such as microcapsules, polymeric beads, noodles, or one or more pearls or mixtures thereof. Such solid elements may provide technical benefits through cleaning or as pre-treatment, delayed, or continuous release components, and may additionally or alternatively provide aesthetic benefits.

[0117] Multi-compartment pouches can be used to keep compositions containing incompatible ingredients (e.g., bleach and enzymes) physically separated or compartmentalized from one another. It is believed that such compartmentation can extend the useful life and / or reduce the physical instability of such ingredients. Additionally or alternatively, such compartmentation can provide aesthetic benefits, as described in European Patent Application No. 09161692.0. Multi-compartment pouches can contain a liquid composition in at least one compartment and a solid composition in at least one compartment. Multi-compartment pouches can contain liquid compositions in at least two, or even all, compartments.

[0118] The compositions encapsulated by the films described herein can have any suitable viscosity, depending on factors such as the ingredients and the purpose of the composition. -1 and a temperature of 20°C, and a high shear viscosity value of 100 to 3,000 cP, or 300 to 2,000 cP, or 500 to 1,000 cP, and -1 The viscosity may have a low shear viscosity value of 500-100,000 cP, alternatively 1000-10,000 cP, alternatively 1,300-5,000 cP at a shear rate of 1000° C. and a temperature of 20° C. Methods for measuring viscosity are known in the art. According to the present disclosure, viscosity measurements are performed using a rotational rheometer, for example, a TA Instruments AR550. The apparatus includes a 40 mm 2° or 1° cone fixture with a gap of about 50-60 μm for isotropic liquids, or a 40 mm flat steel plate with a gap of 1000 μm for particle containing liquids. Measurements are performed using a flow procedure that includes a conditioning step, a peak hold, and a continuous ramp step. The conditioning step includes setting the measurement temperature at 20° C., ramping for 10 seconds, and then ramping for 10 seconds. -1 The preshear included 10 seconds at a shear rate of 0.05 s and 60 seconds equilibration at the selected temperature. -1 The shear rate was applied for 3 min at 20 °C with sampling every 10 s. Successive ramp steps included 0.1 to 1200 s for 3 min at 20 °C. -1 to obtain a complete flow profile.

[0119] Suitable components of the household care compositions are described in more detail below.

[0120] fragrance The composition, e.g., the household care composition or non-household care composition of the present disclosure, includes a fragrance. The composition, e.g., the household care composition or non-household care composition, may include about 0.1% to about 10%, or about 0.1% to about 5%, preferably about 0.5% to about 4%, more preferably about 1% to about 3%, by weight of the composition, e.g., the household care composition or non-household care composition, of the fragrance.

[0121] As described in more detail below, the perfume may comprise a neat perfume, an encapsulated perfume, or a mixture thereof. Preferably, the perfume comprises a neat perfume. A portion of the perfume may be encapsulated in a core-shell encapsulation. In another type of embodiment, the perfume is not encapsulated in a core / shell encapsulation.

[0122] As used herein, the term "perfume" includes perfume raw materials (PRMs) and perfume accords. As used herein, the term "perfume raw materials" refers to compounds having a molecular weight of at least about 100 g / mol, and are useful either alone or together with other perfume raw materials to impart an odor, fragrance, aroma, or scent. As used herein, the terms "perfume ingredient" and "perfume raw materials" are interchangeable. As used herein, the term "accord" refers to a mixture of two or more PRMs.

[0123] Typical PRMs include, among others, alcohols, ketones, aldehydes, esters, ethers, nitrites, and alkenes such as terpenes. Lists of common PRMs can be found in various references, such as "Perfume and Flavor Chemicals", Vols. I and II; Steffen Arctander Allured Pub. Co. (1994) and "Perfumes: Art, Science and Technology", Miller, PM and Lamparsky, D., Blackie Academic and Professional (1994).

[0124] PRMs are characterized by their boiling point (BP), measured at atmospheric pressure (760 mmHg), and their octanol / water partition coefficient (P). Based on these characteristics, PRMs can be classified as Quadrant I, Quadrant II, Quadrant III, or Quadrant IV fragrances, as described in more detail below.

[0125] The octanol / water partition coefficient of a PRM is the ratio between its equilibrium concentrations in octanol and water. The logP of many PRMs has been reported, and the Pomona92 database, available from Daylight Chemical Information Systems, Inc. (Daylight CIS), Irvine, Calif., for example, contains many, with citations to the original literature. However, logP values ​​are most conveniently calculated by the "CLOGP" program, also available from Daylight CIS. This program also lists experimental logP values, if available, in the Pomona92 database. "Calculated logP" (ClogP) is determined by the fragment approach of Hansch and Leo (see A. Leo, in Comprehensive Medicinal Chemistry, Vol. 4, C. Hansch, PG Sammens, JB Taylor and CARansden, Eds, p. 295, Pergamon Press, 1990, incorporated herein by reference). The fragment approach is based on the chemical structure of each PRM and takes into account the number and type of atoms, atom connectivity, and chemical bonds. The ClogP value, which is the most reliable and widely used estimate of this physicochemical property, is preferably used instead of the experimental logP value in the selection of PRMs useful in the present invention.

[0126] The boiling points of many PRMs are described, for example, in "Perfume and Flavor Chemicals (Aroma Chemicals)", S. Arctander, published by the author, 1969, which is incorporated herein by reference. Other boiling point values ​​can be obtained from different chemical handbooks and databases, such as the Beilstein Handbook, Lange's Handbook of Chemistry, and the CRC Handbook of Chemistry and Physics. When boiling points are given only at different pressures, usually lower than atmospheric pressure of 760 mmHg, the boiling point at atmospheric pressure can be approximately estimated by using a boiling point-pressure nomograph, such as the one described in "The Chemist's Companion", AJ Gordon and RA Ford, John Wiley & Sons Publishers, 1972, pp. 30-36.

[0127] Perfume raw materials having a boiling point below 250°C and a ClogP below 3.0 are referred to as Quadrant I perfumes. Quadrant I perfumes having a boiling point below 250°C and a ClogP between 0 and 3.0 are preferred. Non-limiting examples of Quadrant I perfume raw materials include allyl caproate, amyl acetate, amyl propionate, anisaldehyde, anisole, benzaldehyde, benzyl acetate, benzyl acetone, benzyl alcohol, benzyl formate, benzyl isovalerate, benzyl propionate, beta gamma hexenol, camphor gum, laevo-carveol, d-carbone, lael-carbone, cinnamic alcohol, cinnamyl formate ... Mate, cis-Jasmone, cis-3-Hexenyl Acetate, Cuminic, Alcohol, Cuminic Aldehyde, Cyclal C, Dimethylbenzyl Carbinol, Dimethylbenzyl Carbinyl Acetate, Ethyl Acetate, Ethyl Acetoacetate, Ethyl Amyl Ketone, Ethyl Benzoate, Ethyl Butyrate, Ethylhexyl Ketone, Ethyl Phenyl Acetate, Eucalyptol, Eugenol, Fenchyl Alcohol, Floracetate (Tricyclo Decenyl acetate), Fultene (tricyclodecenyl propionate), Geraniol, Hexenol, Hexenyl acetate, Hexyl acetate, Hexyl formate, Hydratropic alcohol, Hydroxycitronellal, Isoamyl alcohol, Isomenthone, Isopregyl acetate, Isoquinoline, Cis-jasmone, Ligustral, Linalool, Linalool oxide, Linalyl formate, Menthone, Methylacetophenone, Methylamine Ketone, methyl anthranilate, methyl benzoate, methyl benzyl acetate, nerol, phenylethyl alcohol, alpha-terpineol, propanoic acid ethyl ester, ethyl propionate, acetate 2-methylpropyl ester, isobutyl acetate, butanoic acid 2-methyl-methyl ester, ethyl 2-methylbutyrate, 2-hexenal, (E)-, 2-hexenal, benzeneacetic acid methyl ester, methyl phenyl acetate, 1,3-Dioxolane-2-acetic acid 2-methyl-ethyl ester, fructone, benzeneacetaldehyde, alpha-methyl-, hydratropic aldehyde, acetic acid (2-methylbutoxy)-2-propenyl ester, allyl amyl glycolate, ethanol 2,2´-oxybis-, chalone 161, 2(3H)-furanone 5-ethyl dihydro-, gamma hexalactone, 2H-pyran 3,6-dihydro-4-methyl-2-(2-methyl-1-propenyl)-, nerol oxide, 2-propenal 3-Phenyl-, Cinnamic aldehyde, 2-Propenoic acid 3-phenyl-methyl ester, Methyl cinnamate, 4H-Pyran-4-one 2-Ethyl-3-hydroxy-, Ethyl maltol, 2-Heptanone, Methyl amyl ketone, Acetic acid pentyl ester, Isoamyl-acetate, Heptenone methyl-, Methylheptenone, 1-Heptanol, Heptyl alcohol, 5-Hepten-2-one 6-Methyl-, Methylheptenone, Ethanol 2-(2-Methoxyethoxy)-, Veramoss Sps, Tricyclo[2.2.1.02,6]heptane 1-ethyl-3-methoxy-, Neoproxene, Benzene 1,4-dimethoxy-, Hydroquinone dimethyl ether, Carbonic acid 3-hexenyl methyl ester (Z)-, Liffarome, Oxirane 2,2-dimethyl-3-(3-methyl-2,4-pentadienyl)-, Myroxide, Ethanol 2-(2-ethoxyethoxy)-, Diethylene glycol monoethyl ether, Cyclohexane ethanol, Cyclohexyl ethyl alcohol, 3-octen-1-ol (Z)-, Octenol D ix, 3-cyclohexene-1-carboxaldehyde 3,6-dimethyl-, cyclovertal, 1,3-oxathiane 2-methyl-4-propyl-cis-, oxane, acetic acid 4-methylphenyl ester, paracresyl acetate, benzene (2,2-dimethoxyethyl)-, phenylacetaldehyde dimethyl acetal, octanal 7-methoxy-3,7-dimethyl-, methoxycitronellal Pq, 2H-1-benzopyran-2-one octahydro-, octahydrocoumarin, benzenepropanal beta-methyl-, triphemal, 4,7-methano-1H-indenecarboxaldehyde octahydro-, formyltricyclodecane, ethanone 1-(4-methoxyphenyl)-, paramethoxyacetophenone, propanenitrile 3-(3-hexenyloxy)-(Z)-, parmanil, 1,4-methanonaphthalen-5(1H)-one 4,4a,6,7,8,8a-hexahydro-, tamizon, benzene[2-(2-propenyloxy)ethyl]-, LRA220, benzenepropanol, phenylpropyl alcohol, 1H-indole, indole, 1,3-dioxolane 2-(phenylmethyl)-, ethylene glycol acetal / phenylacetaldehyde, 2H-1-benzopyran-2-one, 3,4-dihydro-, dihydrocoumarin, and mixtures thereof.

[0128] Perfume raw materials having a boiling point of about 250° C. or a ClogP of less than 3.0 are referred to as Quadrant II perfumes. Quadrant II perfumes having a boiling point above 250° C. and a ClogP of 0-3.0 are preferred. Non-limiting examples of Quadrant II perfume raw materials include coumarin, eugenol, iso-eugenol, indole, methyl cinnamate, methyl dihydrojasmonate, methyl-N-methylanthranilate, beta-methyl naphthyl ketone, delta-N nonalactone, vanillin, and mixtures thereof.

[0129] Perfume raw materials having a boiling point below 250° C. and a ClogP greater than about 3.0 are referred to as Quadrant III perfumes. Non-limiting examples of Quadrant III perfume raw materials include iso-bomyl acetate, carvacrol, alpha-citronellol, paracymene, dihydromyrcenol, geranyl acetate, d-limonene, linalyl acetate, and vertenex.

[0130] Perfume raw materials having a boiling point of about 250° C. or greater or a ClogP of about 3.0 or greater are referred to as quadrant IV perfumes or persistent perfumes. Non-limiting examples of persistent perfume raw materials include allyl cyclohexanepropionate, ambrettolide, amyl benzoate, amyl cinnamate, amyl cinnamic aldehyde, amyl cinnamic aldehyde dimethyl acetal, isoamyl salicylate, hydroxycitronellal-methyl anthranilate (known as aurantiol®), benzophenone, benzyl salicylate, para-tert-butylcyclohexyl acetate, anthraquinone, cyclohexyl benzoate ... , cinnaryl salicylate, cinnamyl salicylate, isobutylquinoline, beta-caryophyllene, cadinene, cedrol, cedryl acetate, cedryl formate, cinnamyl cinnamate, cyclohexyl salicylate, cyclamen aldehyde, dihydroisojasmonate, diphenylmethane, diphenyl oxide, dodecalactone, 1-(1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-naphthalenyl)-ethanone (iso E Super®), ethylene brassylate, methyl phenyl glycidate, ethyl undecylenate, 15-hydroxypentadecanoic acid lactone (known as Exaltolide®), 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-gamma-2-benzopyran (known as Galaxolide®), geranyl anthranilate, geranyl phenylacetate, hexadecanolide, hexenyl salicylate, hexyl cinnamic aldehyde, saponin, ethyl phenyl glycidate ... Hexyl licylate, alpha-irone, gamma-ionone, gamma-n-methyl ionone, para-tertiary-butyl-alpha-methylhydrocinnamic aldehyde (known as Lilial®), Lilial (pt-bucinal)®, linalyl benzoate, 2-methoxynaphthalene, methyl dihydrojasmonate, musk indanone, musk ketone, musk tibetin, myristicin, oxahexadecanolide-10, oxahexadecanolide-11, patchouli alcohol, 5-acetyl-1,1,2,3,3,6-Hexamethylindan (known as phantolide®), phenylethyl benzoate, phenylethyl phenylacetate, phenylheptanol, phenylhexanol, alpha-santalol, delta-undecalactone, gamma-undecalactone, vetiberyl acetate, yara-yara, and ylangene.

[0131] Fragrance raw materials and accords may be obtained from one or more of the following fragrance material suppliers: Firmenich (Geneva, Switzerland), Givaudan (Argenteuil, France), IFF (Hazlet, NJ), Quest (Mount Olive, NJ), Bedoukian (Danbury, Conn.), Sigma Aldrich (St. Louis, Mo.), Millennium Specialty Chemicals (Olympia Fields, Ill.), Polarone International (Jersey City, NJ), Fragrance Resources (Keyport, NJ), and Aroma & Flavor Specialties (Danbury, Conn.).

[0132] Traditionally, perfume accords are formulated around "persistent" perfumes (quadrant IV) because of their high deposition efficiency and therefore odor impact on fabrics, whereas "non-persistent" perfumes, especially quadrant I perfume ingredients, are considered less likely to deposit on fabrics and, as such, are typically used in only small amounts to minimize waste and pollution. Quadrant I perfume ingredients are hydrophilic (e.g., ClogP less than 3.0) and have low boiling points (e.g., BP less than 250°C), and therefore, they are easily lost to the washing or rinsing medium or during heat drying. In the compositions of the present disclosure, some non-persistent perfume ingredients, especially quadrant I perfume ingredients, can be purposely formulated, for example, to improve the perfume odor in the headspace of the container so that consumers can recognize the perfume characteristics of the contained aqueous pouch. As described below, the compositions of the present disclosure can include at least about 2% by weight, or at least about 3% by weight, or at least about 4% by weight of the composition of quadrant I perfume ingredients.

[0133] A fragrance according to the present disclosure may contain from about 15% to about 60% by weight of the fragrance accord, preferably from about 20% to about 55% by weight, more preferably from about 25% to about 50% by weight of non-persistent fragrance ingredients. Non-persistent fragrance ingredients include quadrant I, II, and III fragrance ingredients. A fragrance according to the present disclosure may contain from about 2% to about 15% by weight of the fragrance accord, preferably from about 3% to about 12% by weight, more preferably from about 4% to about 10% by weight of quadrant I fragrance ingredients. A fragrance may contain at least about 2%, or at least about 3%, or at least about 4% by weight of the composition of quadrant I fragrance ingredients.

[0134] Additionally or alternatively, the perfume may comprise from about 2.5% to about 25%, preferably from about 3% to about 20%, more preferably from about 5% to about 15% of a quadrant II perfume component, from about 10% to about 50%, preferably from about 15% to about 45%, more preferably from about 20% to about 40% of a quadrant III perfume component, and / or from about 40% to about 85%, preferably from about 45% to about 75%, more preferably from about 40% to about 65% of a quadrant IV perfume component. Such perfume accords, when co-formulated with organic solvents into household care compositions that are enclosed in a water-soluble film according to the present disclosure forming a water-soluble pouch according to the present disclosure, have been found to deliver good perfume odor in the headspace of the container so that the consumer can recognize the perfume characteristics of the contained water-soluble pouch while still providing efficient perfume deposition on fabrics through washing, thus a high odor impact on fabrics at both wet and dry stages, and minimizing loss of organic solvent upon storage.

[0135] Additionally or alternatively, in one type of embodiment, the perfume will be free of about 15% to about 60% of quadrant I, quadrant II, and quadrant III perfume ingredients. Additionally or alternatively, in one type of embodiment, the perfume will be free of about 2% to about 15% of quadrant I perfume ingredients. Additionally or alternatively, in one type of embodiment, the perfume will be free of about 2% to about 15% of quadrant I perfume ingredients, 2.5% to 25% of quadrant II perfume ingredients, 10% to 50% of quadrant III perfume ingredients, and 40% to 85% of quadrant IV perfume ingredients. Additionally or alternatively, in one type of embodiment, the perfume will not be contained in the core / shell encapsulation.

[0136] A portion of the perfume may be an encapsulated perfume. The perfume may be encapsulated in a core-shell encapsulation. The encapsulation may include a core and a wall, the wall acting as a shell at least partially surrounding the core. The core may include a benefit agent, such as a perfume. The wall may include an exterior surface, which may include a coating. The coating may include an efficiency polymer. These elements are described in more detail below.

[0137] The composition may comprise from about 0.1%, or from about 0.2%, or from about 0.3%, or from about 0.4%, or from about 0.5%, to about 5%, or to about 2.5%, or to about 2%, or to about 1% by weight of the encapsulant. The composition may comprise from about 0.1% to about 1% by weight of the encapsulant.

[0138] The encapsulates may be fragile. The encapsulate particle size can be measured by typical methods known in the art, such as a Malvern particle sizer. The encapsulates can have an average particle size of about 10 microns to about 500 microns, or about 200 microns, or about 100 microns, or about 50 microns, or about 30 microns. Multiple encapsulates may form agglomerates.

[0139] The encapsulates can have a cationic charge in the pH range of about 2 to about 10, about 3 to about 9, or about 4 to about 8.

[0140] The encapsulant may have a wall that may at least partially surround the core. The wall may comprise a wall material selected from the group consisting of polyethylene, polyamide, polystyrene, polyisoprene, polycarbonate, polyester, polyacrylate, acrylic, aminoplast, polyolefin, alginate and / or polysaccharide such as chitosan, gelatin, shellac, epoxy resin, vinyl polymer, water insoluble inorganic material, silicone, and mixtures thereof. The wall material may be selected from the group consisting of aminoplast, acrylic, acrylate, and mixtures thereof.

[0141] The wall material may include an aminoplast. The aminoplast may include a polyurea, a polyurethane, and / or a polyurea-urethane. The aminoplast may include an aminoplast copolymer, such as melamine-formaldehyde, urea-formaldehyde, crosslinked melamine formaldehyde, or a mixture thereof. The wall material may include melamine formaldehyde, and the wall may further include a coating as described below. The encapsulation may include a core including a perfume and a wall including melamine formaldehyde and / or crosslinked melamine formaldehyde. The encapsulation may include a core including a perfume and a wall including melamine formaldehyde and / or crosslinked melamine formaldehyde, poly(acrylic acid), and poly(acrylic acid-co-butyl acrylate).

[0142] The outer wall of the encapsulate can include a coating. Certain coatings can improve the adhesion of the encapsulate to a target surface, such as fabric. The encapsulate can have a coating to wall weight ratio of about 1:200 to about 1:2, or about 1:100 to about 1:4, or even about 1:80 to about 1:10.

[0143] The coating may comprise an efficiency polymer. The coating may comprise a cationic efficiency polymer. The cationic polymer may be selected from the group consisting of polysaccharides, cationized modified starches, cationized modified guar, polysiloxanes, polydiallyldimethylammonium halides, copolymers of polydiallyldimethylammonium chloride and vinylpyrrolidone, acrylamides, imidazoles, imidazolinium halides, imidazolium halides, polyvinylamines, polyvinylformamides, polyallylamines, copolymers thereof, and mixtures thereof. The coating may comprise a polymer selected from the group consisting of polyvinylamines, polyvinylformamides, polyallylamines, copolymers thereof, and mixtures thereof.

[0144] The coating can include polyvinylformamide, which can have a degree of hydrolysis of about 5% to about 95%, about 7% to about 60%, or even about 10% to about 40%.

[0145] The one or more efficiency polymers can have an average molecular weight of about 1,000 Da to about 50,000,000 Da, about 5,000 Da to about 25,000,000 Da, about 10,000 Da to about 10,000,000 Da, or even about 340,000 Da to about 1,500,000 Da. The one or more efficiency polymers can have a charge density of about 1 meq / g efficiency polymer to about 23 meq / g efficiency polymer, about 1.2 meq / g efficiency polymer to about 16 meq / g efficiency polymer, about 2 meq / g efficiency polymer to about 10 meq / g efficiency polymer, or even about 1 meq / g efficiency polymer to about 4 meq / g efficiency polymer.

[0146] The encapsulate core may include a benefit agent. Suitable benefit agents include perfume raw materials, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, lipids, skin cooling agents, vitamins, sunscreens, antioxidants, glycerin, catalysts, bleach particles, silicon dioxide particles, malodor reducing agents, odor control materials, chelating agents, antistatic agents, softeners, insect repellents, colorants, antioxidants, chelating agents, thickeners, drape and shape control agents, smoothing agents, wrinkle control agents, disinfectants, germicides, bacteria control agents, mold control agents, mildew control agents, antiviral agents, drying agents, stain inhibitors, stain repellents, fabrics, and the like. These may include cooling and cooling extension agents, chlorine bleach odor control agents, dye fixatives, color transfer inhibitors, color retention agents, optical brighteners, color restoration / recovery agents, anti-fading agents, whiteness enhancers, anti-abrasion agents, anti-abrasion agents, anti-pilling agents, anti-foaming agents, anti-foaming agents, UV protection agents, sunscreen agents, anti-allergy agents, enzymes, waterproofing agents, fabric softeners, shrink prevention agents, stretch prevention agents, stretch recovery agents, skin care agents, glycerin, and natural actives, antimicrobial actives, antiperspirant actives, cationic polymers, dyes, and mixtures thereof. Benefit agents may include perfume raw materials.

[0147] The encapsulation may include a core comprising a perfume raw material and a wall comprising melamine formaldehyde and / or crosslinked melamine formaldehyde, the wall further comprising a coating on an exterior surface of the wall, the coating comprising an efficiency polymer such as polyvinyl formamide.

[0148] Suitable encapsulates are available from Encapsys, Appleton, Wisconsin, USA. The detergent composition may include a mixture of different encapsulates, for example encapsulates having different wall materials and / or benefit agents.

[0149] The present household care compositions may further comprise formaldehyde scavengers, which may be useful in or with certain encapsulations, particularly those that contain and / or release formaldehyde. Suitable formaldehyde scavengers include sodium bisulfite, urea, cysteine, cysteamine, lysine, glycine, serine, carnosine, histidine, glutathione, 3,4-diaminobenzoic acid, allantoin, glycouril, anthranilic acid, methyl anthranilate, methyl 4-aminobenzoate, ethyl acetoacetate, acetoacetamide, malonamide, ascorbic acid, 1,3-hydroxyacetone dimer, biuret, oxamide, benzoguanamine, pyroglutamic acid, pyrogallol, methyl gallate, ethyl gallate, propyl gallate, triethanolamine, succinamide, thiabendazole, benzotriazole, triazole, indoline, sulfanilic acid, oxamide, sorbitol, glutamine, glycerol ... Examples of suitable amines include cocos, cellulose, poly(vinyl alcohol), poly(vinylamine), hexanediol, ethylenediamine-N,N'-bisacetoacetamide, N-(2-ethylhexyl)acetoacetamide, N-(3-phenylpropyl)acetamide, lylial, helional, melonal, triplal, 5,5-dimethyl-1,3-cyclohexanedione, 2,4-dimethyl-3-cyclohexenecarboxaldehyde, 2,2-dimethyl-1,3-dioxane-4,6-dione, 2-pentanone, dibutylamine, triethylenetetramine, benzylamine, hydroxycitronellol, cyclohexanone, 2-butanone, pentanedione, dehydroacetic acid, chitosan, or mixtures thereof.

[0150] Organic solvents The composition, for example, the household care composition or non-household care composition of the present disclosure, may contain an organic solvent. Organic solvents may be useful in the composition, for example, the household care composition or non-household care composition of the present disclosure, for example, to promote product stability. However, the loss or migration of organic solvent from the pouch described herein may cause problems such as product instability, sticky or oily pouch, etc. It is believed that the water-soluble film of the present disclosure works with the composition and container of the present disclosure to minimize the migration or loss of organic solvent while providing other pouch benefits such as pouch integrity, film plasticity, dissolution during use and / or fragrance release.

[0151] The composition may comprise about 1% to about 50% by weight of the organic solvent, or about 5%, or about 10%, or about 15% to about 50%, or about 40%, or about 30% by weight of the organic solvent.

[0152] Suitable organic solvents include, and are preferably selected from, low molecular weight monoalcohols, polyols, glycols, or combinations thereof. As used herein, "low molecular weight" means having a molecular weight of less than about 600, or less than about 500, or less than about 400, or less than about 300, or less than about 200. Suitable organic solvents may include glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycols (e.g., polyethylene glycols, which may have a weight average molecular weight of about 200 to about 600, or about 500, or about 400), sorbitol, and mixtures thereof. The household care composition or non-household care composition may be substantially free of ethanol, meaning that the composition comprises 0% (including 0%) to about 0.1% ethanol by weight of the composition. As used herein, neither fatty acids or alkanolamines (e.g., monoethanolamine, diethanolamine, triethanolamine) nor hydrotropes such as cumene sulfonate, toluene sulfonate or xylene sulfonate are considered to be organic solvents. Water is also not understood as an organic solvent within the scope of the present invention.

[0153] The composition, e.g., the household care composition or the non-household care composition, may include at least two organic solvents, or at least three organic solvents. The composition may include a first organic solvent. The first organic solvent may be present in a greater proportion than the other organic solvents. The first organic solvent may be 1,2-propanediol. The composition, e.g., the household care composition or the non-household care composition, may include a second organic solvent. The second organic solvent may be glycerol. The ratio of the first solvent, e.g., 1,2-propanediol, to the second solvent, e.g., glycerol, may be about 7:1 to about 1:5, or about 6.5:1 to about 1:3, or about 4:1 to about 1:1, or 3.5:1 to 1.5:1.

[0154] The composition, for example a household care composition or a non-household care composition, may comprise 1,2-propanediol and dipropylene glycol. The weight ratio of 1,2-propanediol to dipropylene glycol may be from 1:1 to 10:1, or from 1:1 to 5:1, or from 1.5:1 to 4:1.

[0155] The composition, for example, the household care composition or the non-household care composition, may comprise 1,2-propanediol, glycerol, and dipropylene glycol. The weight ratio of 1,2-propanediol to glycerol and 1,2-propanediol to dipropylene glycol may be 1:1 to 10:1, or 1:1 to 5:1, or 1.5:1 to 4:1. The weight ratio of glycerol to dipropylene glycol may be 3:1 to 1:3, or 2:1 to 1:2, or 1.5:1 to 1:1.5.

[0156] In some embodiments, at least one or at least two of the organic solvents of the organic solvent are the same as at least one or at least two of the plasticizers of the film material.Without wishing to be bound by theory, it is believed that having a common solvent / plasticizer can improve the plasticity of the film over time when the film is in contact with the composition contained in the compartment.Having a common solvent / plasticizer can also promote the selective leakage of a particular fragrance into the head space of the container.The common solvent / plasticizer can be selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, or combinations thereof.

[0157] The organic solvents of the composition may be characterized by their cLogP value, as described above, which indicates their relative hydrophilicity. The cLogP values ​​of several organic solvents are shown in Table 1 below.

[0158] The organic solvents of the composition may be characterized by their boiling point (BP). The boiling points of some organic solvents are shown in Table 1 below. [Table 1]

[0159] It may be desirable to select a particular combination of fragrance and solvent such that at least some fragrance can leak from the described pouch into the headspace of the closed container while relatively minimizing loss of organic solvent.

[0160] In the household care compositions and non-household care compositions described herein, the organic solvent may comprise at least about 10%, or at least about 20%, by weight of the total organic solvent, of organic solvents having a boiling point above 250° C., and / or the fragrance may comprise at least about 10%, or at least about 20%, or at least about 30%, by weight of the total fragrance, of fragrance raw materials having a boiling point below 250° C.

[0161] In the household care compositions and non-household care compositions described herein, the organic solvent may comprise at least about 50%, or at least about 80%, or at least about 90%, or even at least about 95% by weight of the total organic solvent, of organic solvents having a cLogP value less than 0, and / or the fragrance may comprise at least about 50%, or at least about 80%, or at least about 90%, or even at least about 95% by weight of the total fragrance, of fragrance raw materials having a cLogP value greater than 0. More preferably, the fragrance accord will comprise from about 4% to about 40%, preferably from 6% to 30%, more preferably from 8% to 20%, by weight of the fragrance, of fragrance raw materials having a ClogP of 0 to 3.0, and from 60% to about 96%, preferably from 70% to 94%, more preferably from 80% to 92%, by weight of the fragrance, of fragrance raw materials having a ClogP greater than 3.0.

[0162] Other materials The household and non-household care compositions described herein may contain any of the following non-limiting list of ingredients: fabric care benefit agents, detersive enzymes, deposition aids, rheology modifiers, builders, bleaches, bleaching agents, bleach precursors, bleach boosters, bleach catalysts, perfume loaded zeolites, starch encapsulated accords, polyglycerol esters, whitening agents, pearlescent agents, enzyme stabilizing systems, fixatives for anionic dyes, complexing agents for anionic surfactants, scavengers, fluorescent agents, and mixtures thereof. The composition may include one or more of the following: brighteners or fluorescent agents, polymers including, but not limited to, soil release polymers and / or soil suspending polymers, dispersants, defoamers, non-aqueous solvents, fatty acids, foam suppressors, e.g., silicone foam suppressors, cationic starches, scum dispersants, direct dyes, hueing dyes, colorants, opacifiers, antioxidants, hydrotropes such as toluenesulfonates, cumenesulfonates, and naphthalenesulfonates, color speckles, colored beads, spheres or extrudates, clay softeners, antimicrobial agents. Additionally or alternatively, the composition may include a surfactant, a quaternary ammonium compound, and / or a solvent system. Quaternary ammonium compounds are present in fabric enhancer compositions, such as fabric softeners, and may be represented by the structure NR4, where R is an alkyl or aryl group. + The cation may include a quaternary ammonium cation, which is a positively charged polyatomic ion of the formula:

[0163] The household and non-household care compositions described herein may comprise from about 5% to 70%, or from about 10% to about 60%, or from about 20% to about 50%, or from about 30% to about 50%, by weight of the composition, of a surfactant, which may be selected from an anionic, nonionic, cationic, zwitterionic, or amphoteric surfactant, or mixtures thereof. The anionic surfactant may include an alkyl benzene sulfonate, an alkoxylated alkyl sulfate, or a combination thereof. The nonionic surfactant may include an ethoxylated nonionic surfactant. The composition may comprise from 5 to 60%, or from about 15 to about 50%, or from about 20% to about 45%, by weight of the composition. The surfactant can comprise an anionic surfactant and a nonionic surfactant in a weight ratio of about 20:1 to about 1:3, or about 15:1 to about 1:2, or about 12:1 to about 3:1, where the anionic surfactant comprises one or more of a fatty acid, an alkyl ether sulfate, an alkyl benzene sulfonate, or a combination thereof.

[0164] The household and non-household care compositions described herein may contain relatively low levels of water, if any. The household or non-household care compositions may contain less than 20%, or less than 15%, or less than 12%, or less than 10%, or less than 8%, or less than 5% water. The compositions may contain about 1% to 20%, or about 3% to about 15%, or about 5% to about 12% water, by weight of the composition. The compositions may be substantially anhydrous, which is meant herein to contain less than about 5%, or less than about 2%, or less than about 1% water. Relatively high levels of water may adversely affect the integrity of the water-soluble film.

[0165] The composition may include a mixture of water and glycol, and the glycol may be selected from the group including glycerol, 1,2, propanediol, 1,3, propanediol, and dipropylene glycol. The glycerol may be present in an amount of less than about 15% by weight, preferably less than about 10% by weight, of the total composition. The total amount of water and glycerol may be from about 3% to about 20% by weight, preferably from about 5% to about 15% by weight, of the composition.

[0166] How to use The container systems described herein may be suitable for storing, transporting, and / or selling pouches contained therein.

[0167] Any of the pouches described herein, as well as the household and non-household care compositions contained therein, can be used to treat a substrate, such as a fabric or hard surface, for example, by contacting the substrate with the film, article, and / or the composition contained therein. The contacting step can be performed manually or in an automatic machine, such as an automatic (top or front loading) washing machine, an automatic dishwasher, a floor washer, or other cleaning machine. The contacting step can be performed in the presence of water, which can be at a temperature of up to about 80°C, or up to about 60°C, or up to about 40°C, or up to about 30°C, or up to about 20°C, or up to about 15°C, or up to about 10°C, or up to about 5°C. The contacting step can be followed by multiple rinse cycles or even a single rinse cycle. The method can include opening a sealed container to access the pouch contained therein. The method can further include sealing the container.

[0168] A method of treating a substrate such as a fabric includes the steps of opening a sealed container and accessing a pouch contained within the interior space of the container, the pouch comprising a water soluble film and a household or non-household care composition at least partially enclosed in a compartment by the water soluble film, the household or non-household care composition comprising from about 0.1% to about 10% by weight of the composition of a fragrance and from about 1% to about 50% by weight of the composition of an organic solvent, the film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH resin comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units. the PVOH resin blend further comprises a second PVOH polymer selected from the group consisting of (a) a PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, or (b) a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition or non-household care composition; and contacting a substrate to be treated with the household care composition or non-household care composition.

[0169] The present disclosure further relates to use of a water-soluble film for providing a pleasant scent experience upon opening a container, the water-soluble film forming a pouch and at least partially enclosing a household or non-household care composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, the PVOH resin blend further comprising a second PVOH polymer selected from the group consisting of (a) a PVOH polymer comprising second anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, or (b) a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0170] Example, Part 1 Specific contemplated examples of the present disclosure are described herein in the following numbered sections, which are intended to be illustrative and not limiting in nature.

[0171] 1. A water-soluble film suitable for containing a composition comprising a fragrance and an organic solvent, or adapted to selectively release a fragrance over time, comprising: the film comprises a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) the film further comprises a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0172] 2. The film of claim 1, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetate, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropane sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, 2-methylacrylamido-2-methylpropane sulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0173] 3. The film according to any one of the preceding paragraphs 1 to 2, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0174] 4. The film according to any one of paragraphs 1 to 3, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0175] 5. The film according to any one of the preceding paragraphs 1 to 4, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, a salt thereof, and combinations thereof.

[0176] 6. The film according to any one of the preceding paragraphs 1 to 5, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[0177] 7. The film of any one of paragraphs 1 to 6, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0178] 8. The film of any one of paragraphs 1 to 7, wherein the first PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of all PVOH polymers in the film.

[0179] 9. The film according to any one of the preceding paragraphs 1 to 8, wherein the second PVOH polymer comprises a second anionic monomer unit.

[0180] 10. The film of paragraph 9, wherein the second anionic monomer unit is different from the first anionic monomer unit.

[0181] 11. The film of any one of paragraphs 1 to 10, wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetate, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0182] 12. The film according to any one of paragraphs 1 to 11, wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, salts thereof, and combinations thereof.

[0183] 13. The first PVOH polymer is present in the PVOH blend in a range from about 50% to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 13. The film of any one of paragraphs 1 to 12, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% to about 50% by weight of the total PVOH polymer in the blend, and the second monomeric units are derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0184] 14. The film according to any one of paragraphs 1 to 13, wherein the first PVOH polymer has a first incorporation level (a1) of a first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of a second anionic monomer unit, and wherein the absolute value of |a1-a2| is greater than 0 when the first and second anionic monomers are the same.

[0185] 15. The film according to any one of the preceding paragraphs 1 to 14, wherein a1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer, a2 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[0186] 16. The film according to any one of paragraphs 1 to 15, wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[0187] 17. The film of any one of paragraphs 1 to 16, wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[0188] 18. The film of any one of paragraphs 1 to 17, wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0189] 19. The film of any one of paragraphs 1 to 18, wherein the second PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0190] 20. The film according to any one of items 1 to 19 above, wherein the second PVOH polymer is a PVOH homopolymer.

[0191] 21. The first PVOH polymer is present in the PVOH blend in a range of about 20% to about 60% by weight, preferably about 30% to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; Item 21. The PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at about 20 ° C. of about 10 cP to about 30 cP, and is present in the PVOH resin blend in an amount ranging from about 40% to about 80% by weight, preferably from about 60% to about 70% by weight, of the total PVOH polymer in the blend. Item 21. The film according to item 20.

[0192] 22. The film according to any one of paragraphs 1 to 21, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20°C of from about 10 cP to about 40 cP, or from about 10 cP to about 30 cP, or from about 12 cP to about 25 cP.

[0193] 23. The film according to any one of the preceding paragraphs 1 to 22, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0194] 24. The film according to any one of paragraphs 1 to 23, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20°C and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20°C, and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0195] 25. The film according to any one of paragraphs 1 to 24, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% to about 95% by weight of the film.

[0196] 26. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as determined by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 26. The film according to any one of the preceding paragraphs 1 to 25, having at least one, or at least two, or all three of the modulus values.

[0197] 27. The film according to any one of paragraphs 1 to 26, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0198] 28. The film according to item 27, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0199] 29. The film according to any one of paragraphs 1 to 29, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinkers, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0200] 30. The film according to any one of paragraphs 1 to 29, wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[0201] 31. A film according to any one of claims 1 to 30, in the form of a pouch, the pouch optionally comprising at least two compartments, or at least three compartments.

[0202] 32. The film according to any one of paragraphs 1 to 31 above, wherein the fragrance comprises from about 15% to about 60% by weight of the fragrance of a non-persistent fragrance component selected from quadrant I fragrance components, quadrant II fragrance components, quadrant III fragrance components, and combinations thereof.

[0203] 33. The film according to any one of paragraphs 1 to 32, wherein the fragrance comprises quadrant I fragrance components in an amount of from about 2% to about 15% by weight of the fragrance.

[0204] 34. Fragrances: a) from about 2% to about 15% by weight, preferably from about 3% to about 12% by weight, more preferably from about 4% to about 10% by weight, of quadrant I fragrance ingredients; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; 34. The film according to any one of the preceding paragraphs 1 to 33, comprising: d) about 40% by mass to about 85% by mass, preferably about 45% by mass to about 75% by mass, and more preferably about 40% by mass to about 65% by mass of a quadrant IV fragrance component.

[0205] 35. The film of any one of paragraphs 1 to 34, wherein at least a portion of the fragrance is encapsulated in a core-shell encapsulant.

[0206] 36. The film according to any one of items 1 to 35 above, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0207] 37. The film according to any one of paragraphs 1 to 36, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0208] 38. A film described in any one of paragraphs 1 to 37 above, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[0209] 39. The film of any one of paragraphs 1 to 38, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[0210] 40. A film described in any one of paragraphs 1 to 39 above, wherein the film further comprises at least one plasticizer, and wherein at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0211] 41. The film according to any one of paragraphs 1 to 40, wherein the composition contains about 5% to about 70% by weight of the surfactant based on the composition.

[0212] 42. The film of any one of paragraphs 1 to 41, wherein the composition is a fabric care composition.

[0213] 43. A container comprising the film according to any one of items 1 to 42.

[0214] 44. A method of making a water-soluble film containing a composition comprising a fragrance and an organic solvent and adapted to selectively release the fragrance over time, the method comprising including a polyvinyl alcohol (PVOH) resin blend in the film, the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0215] 45. The method of claim 44, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0216] 46. ​​The method according to any one of paragraphs 44 to 45, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0217] 47. The method of any one of paragraphs 44 to 46, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0218] 48. The method according to any one of paragraphs 44 to 47, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, a salt thereof, and combinations thereof.

[0219] 49. The method of any one of paragraphs 44 to 48, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[0220] 50. The method of any one of paragraphs 44 to 49, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0221] 51. The method of any one of paragraphs 44 to 50, wherein the first PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of all PVOH polymers in the film.

[0222] 52. The method of any one of paragraphs 44 to 51, wherein the second PVOH polymer comprises a second anionic monomer unit.

[0223] 53. The method according to any one of paragraphs 44 to 52, wherein the second anionic monomer unit is different from the first anionic monomer unit.

[0224] 54. The method of any one of paragraphs 44 to 53, wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0225] 55. The method according to any one of paragraphs 44 to 54, wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, salts thereof, and combinations thereof.

[0226] 56. The first PVOH polymer is present in the PVOH blend in a range from about 50% by weight to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 56. The method of any one of paragraphs 44 to 55, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% to about 50% by weight of total PVOH polymers in the blend, and the second monomer units are derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0227] 57. The method of any one of paragraphs 44 to 56, wherein the first PVOH polymer has a first incorporation level (a1) of a first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of a second anionic monomer unit, and when the first and second anionic monomers are the same, the absolute value of |a1-a2| is greater than 0.

[0228] 58. The method of claim 57, wherein a1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer, a2 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[0229] 59. The method of any one of paragraphs 44 to 58, wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[0230] 60. The method of any one of paragraphs 44 to 59, wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[0231] 61. The method of any one of paragraphs 44 to 60, wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0232] 62. The method of any one of paragraphs 44 to 61, wherein the second PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0233] 63. The method according to any one of paragraphs 44 to 62, wherein the second PVOH polymer is a PVOH homopolymer.

[0234] 64. The first PVOH polymer is present in the PVOH blend in a range of about 20% to about 60% by weight, preferably about 30% to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; Item 64. The method according to item 63, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at about 20° C. of about 10 cP to about 30 cP and is present in the PVOH resin blend in a range of about 40% to about 80% by weight, preferably about 60% to about 70% by weight, of the total PVOH polymer in the blend.

[0235] 65. The method of any one of paragraphs 44 to 64, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20°C of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[0236] 66. The method according to any one of paragraphs 44 to 65, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0237] 67. The method of any one of paragraphs 44 to 66, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20°C and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20°C, and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0238] 68. The method of any one of paragraphs 44 to 67, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% to about 95% by weight of the film.

[0239] 69. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as determined by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 69. The method according to any one of paragraphs 44 to 68, wherein the modulus value is at least one, or at least two, or all three of the modulus values.

[0240] 70. The method of any one of paragraphs 44 to 69, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0241] 71. The method of claim 70, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0242] 72. The method of any one of paragraphs 44 to 71, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinkers, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0243] 73. The method according to any one of paragraphs 44 to 72, wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

[0244] 74. The method according to any one of claims 44 to 73, in the form of a pouch, the pouch optionally comprising at least two compartments, or at least three compartments.

[0245] 75. The method according to any one of paragraphs 44 to 74, wherein the fragrance comprises from about 15% to about 60% by weight of the fragrance of a non-persistent fragrance ingredient selected from quadrant I fragrance ingredients, quadrant II fragrance ingredients, quadrant III fragrance ingredients, and combinations thereof.

[0246] 76. The method of any one of paragraphs 44 to 75, wherein the fragrance comprises from about 2% to about 15% by weight of the fragrance of quadrant I fragrance ingredients.

[0247] 77. Fragrances: a) from about 2% to about 15% by weight, preferably from about 3% to about 12% by weight, more preferably from about 4% to about 10% by weight, of quadrant I fragrance ingredients; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; 77. The method according to any one of the preceding paragraphs 44 to 76, comprising: d) about 40% by weight to about 85% by weight, preferably about 45% by weight to about 75% by weight, and more preferably about 40% by weight to about 65% by weight of quadrant IV fragrance ingredients.

[0248] 78. The method according to any one of paragraphs 44 to 77, wherein at least a portion of the fragrance is encapsulated in a core-shell encapsulant.

[0249] 79. The method according to any one of paragraphs 44 to 78, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0250] 80. The method according to any one of paragraphs 44 to 79, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0251] 81. The method according to any one of paragraphs 44 to 80, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent, of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance, of a fragrance raw material having a boiling point below 250°C.

[0252] 82. The method according to any one of paragraphs 44 to 81, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent, of organic solvents having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance raw materials having a cLogP value greater than 0.

[0253] 83. The method of any one of paragraphs 44 to 82 above, wherein the film further comprises at least one plasticizer, and wherein at least one of the organic solvents is the same as the plasticizer (the "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0254] 84. The method according to any one of paragraphs 44 to 83, wherein the composition comprises about 5% to about 70% by weight of the composition of a surfactant.

[0255] 85. The method of any one of paragraphs 44 to 84, wherein the composition is a fabric care composition.

[0256] 86. Use of a water-soluble film for providing a pleasant scent experience upon opening a container, the water-soluble film forming a pouch and at least partially encapsulating a composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0257] 87. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a non-household care composition at least partially enclosed in a compartment by the water-soluble film; The non-household care composition comprises from about 0.1% to about 10% by weight of the non-household care composition. a fragrance; and about 1% to about 50% by weight of the non-household care composition of an organic solvent; the film comprises a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) the container system further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0258] 88. The container system of paragraph 87, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropane sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, 2-methylacrylamido-2-methylpropane sulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0259] 89. The container system according to any one of paragraphs 87 to 88, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0260] 90. The container system of any one of paragraphs 87 to 89, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0261] 91. The container system according to any one of paragraphs 87 to 90, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, a salt thereof, and combinations thereof.

[0262] 92. The container system according to any one of paragraphs 87 to 91, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[0263] 93. The container system of any one of paragraphs 87 to 92, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0264] 94. The container system of any one of paragraphs 87 to 93, wherein the first PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0265] 95. The container system of any one of paragraphs 87 to 94, wherein the second PVOH polymer comprises a second anionic monomer unit.

[0266] 96. The container system according to any one of paragraphs 87 to 95, wherein the second anionic monomer unit is different from the first anionic monomer unit.

[0267] 97. The container system of any one of paragraphs 87 to 96, wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0268] 98. A container system described in any one of paragraphs 87 to 97, wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, salts thereof, and combinations thereof.

[0269] 99. The first PVOH polymer is present in the PVOH blend in a range of about 50% by weight to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 99. The container system of any one of paragraphs 87 to 98, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% to about 50% by weight of the total PVOH polymers in the blend, and the second monomer units are derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0270] 100. The container system of any one of paragraphs 87 to 99, wherein the first PVOH polymer has a first incorporation level (a1) of a first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of a second anionic monomer unit, and when the first and second anionic monomers are the same, the absolute value of |a1-a2| is greater than 0.

[0271] 101. The container system according to any one of paragraphs 87 to 100 above, wherein a1 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the first PVOH polymer, a2 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol% to about 3 mol%, or about 1 mol% to about 3 mol%.

[0272] 102. The container system of any one of paragraphs 87 to 101, wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[0273] 103. The container system of any one of paragraphs 87 to 102, wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[0274] 104. The container system of any one of paragraphs 87 to 103, wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0275] 105. The container system of any one of paragraphs 87 to 104, wherein the second PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0276] 106. The container system according to any one of paragraphs 87 to 105, wherein the second PVOH polymer is a PVOH homopolymer.

[0277] 107. The first PVOH polymer is present in the PVOH blend in a range of about 20% to about 60% by weight, preferably about 30% to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; Item 107. The container system according to item 106, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at about 20 ° C. of about 10 cP to about 30 cP and is present in the PVOH resin blend in an amount ranging from about 40% to about 80% by weight, preferably from about 60% to about 70% by weight, of the total PVOH polymer in the blend.

[0278] 108. The container system of any one of paragraphs 87 to 107, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20°C of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[0279] 109. The container system according to any one of paragraphs 87 to 108, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0280] 110. The container system of any one of paragraphs 87 to 109, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20°C, the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20°C, and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0281] 111. A container system according to any one of paragraphs 87 to 110, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% to about 95% by weight of the film.

[0282] 112. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 112. The container system according to any one of paragraphs 87 to 111, having at least one, or at least two, or all three of the modulus values.

[0283] 113. A container system according to any one of paragraphs 87 to 112, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0284] 114. The container system of claim 113, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0285] 115. A container system described in any one of paragraphs 87 to 114, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0286] 116. A container system described in any one of paragraphs 87 to 115 above, wherein the water-soluble film further contains one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

[0287] 117. A container system described in any one of paragraphs 87 to 116, wherein the pouch includes at least two compartments, or at least three compartments.

[0288] 118. A container system described in any one of paragraphs 87 to 117, wherein the fragrance comprises from about 15% to about 60% by weight of the fragrance of a non-persistent fragrance ingredient selected from quadrant I fragrance ingredients, quadrant II fragrance ingredients, quadrant III fragrance ingredients, and combinations thereof.

[0289] 119. A container system according to any one of paragraphs 87 to 118, wherein the fragrance comprises from about 2% to about 15% by weight of the fragrance of quadrant I fragrance ingredients.

[0290] 120. Fragrances: a) from about 2% to about 15% by weight, preferably from about 3% to about 12% by weight, more preferably from about 4% to about 10% by weight, of quadrant I fragrance ingredients; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; d) about 40% by weight to about 85% by weight, preferably about 45% by weight to about 75% by weight, and more preferably about 40% by weight to about 65% by weight of a quadrant IV fragrance ingredient.

[0291] 121. A container system according to any one of paragraphs 87 to 120, wherein a portion of the fragrance is encapsulated in a core-shell encapsulant.

[0292] 122. A container system described in any one of paragraphs 87 to 121 above, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0293] 123. A container system described in any one of paragraphs 87 to 122, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0294] 124. A container system described in any one of paragraphs 87 to 123 above, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[0295] 125. A container system described in any one of paragraphs 87 to 124, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[0296] 126. A container system described in any one of paragraphs 87 to 125 above, wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0297] 127. A container system according to any one of paragraphs 87 to 126, wherein the non-household care composition comprises from about 5% to about 70% surfactant by weight of the composition.

[0298] 128. A container system according to any one of paragraphs 87 to 127 above, wherein the non-household care composition is selected from one or more of agricultural compositions, automotive compositions, aviation compositions, food and nutritional compositions, industrial compositions, livestock compositions, marine compositions, medical compositions, commercial compositions, military and paramilitary compositions, office compositions, recreational and park compositions, and pet compositions, optionally including cleaning compositions and detergent compositions.

[0299] 129. A container system described in any one of paragraphs 87 to 128, wherein the sealable container is resealable.

[0300] 130. A container system according to any one of paragraphs 87 to 129 above, wherein the sealable container is selected from a soft bag and a rigid tub.

[0301] 131. A method for treating a substrate, comprising: Opening the sealed container; Accessing a pouch contained within the interior space of the container, the pouch comprising: a water-soluble film as described herein; and a non-household care composition as described herein at least partially encapsulated in a compartment by the water-soluble film; The non-household care composition optionally comprises from about 0.1% to about 10% by weight of the non-household care composition. a fragrance; and about 1% to about 50% by weight of the non-household care composition of an organic solvent; The film comprises a polyvinyl alcohol (PVOH) resin blend, and optionally the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the non-household care composition; contacting the substrate to be treated with the non-household care composition.

[0302] 132. Use of a water-soluble film to provide a pleasant scent experience upon opening a container, the water-soluble film forming a pouch and at least partially encapsulating a non-household care composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend described herein, and optionally the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; PVOH resin blends: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0303] 133. A container system comprising a sealable container having a wall defining an interior space and at least one pouch in the interior space, the pouch comprising a water soluble film and a household care composition at least partially enclosed in a compartment by the water soluble film, the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent, the film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, the PVOH resin blend further comprising a second PVOH polymer selected from the group consisting of: (a) a PVOH polymer comprising a second anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units, or (b) a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0304] 134. The container system of claim 133, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropane sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, 2-methylacrylamido-2-methylpropane sulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0305] 135. The container system of any of paragraphs 133-134, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0306] 136. The container system of any of paragraphs 133-135, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0307] 137. The container system of any of paragraphs 133 to 136, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[0308] 138. The container system according to any one of paragraphs 133 to 137, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol% to about 5.0 mol%, preferably from about 2 mol% to about 4 mol% of the first PVOH polymer.

[0309] 139. The container system of any of paragraphs 133 to 138, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0310] 140. The container system of any of paragraphs 133 to 139, wherein the first PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0311] 141. The container system of any of paragraphs 133-140, wherein the second PVOH polymer comprises a second anionic monomer unit.

[0312] 142. The container system of any of paragraphs 133-141, wherein the second anionic monomer unit is different from the first anionic monomer unit.

[0313] 143. The container system of any of paragraphs 133 to 142, wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetate, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0314] 144. The container system of any of paragraphs 133 to 143, wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, salts thereof, and combinations thereof.

[0315] 145. The container system according to any one of paragraphs 133 to 144, wherein the first PVOH polymer is present in the PVOH blend in an amount ranging from about 50% to about 90% by weight of the total PVOH polymer in the blend, and the first anionic monomer units are derived from a member selected from the group consisting of monomethyl maleate, alkali metal salts thereof, and combinations thereof; and the second PVOH polymer is present in the PVOH blend in an amount ranging from about 10% to about 50% by weight of the total PVOH polymer in the blend, and the second monomer units are derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0316] 146. The container system of any of paragraphs 133 to 145, wherein the first PVOH polymer has a first incorporation level (a1) of a first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of a second anionic monomer unit, and the absolute value of |a1-a2| is greater than 0 when the first and second anionic monomers are the same.

[0317] 147. The container system according to any one of items 133 to 146, wherein a1 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the first PVOH polymer, a2 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol% to about 3 mol%, or about 1 mol% to about 3 mol%.

[0318] 148. The container system of any of paragraphs 133 to 147, wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[0319] 149. The container system of any of paragraphs 133 to 148, wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[0320] 150. The container system of any of paragraphs 133 to 149, wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0321] 151. The container system of any of paragraphs 133 to 150, wherein the second PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0322] 152. The container system of any one of paragraphs 133 to 151, wherein the second PVOH polymer is a PVOH homopolymer.

[0323] 153. The first PVOH homopolymer is present in the PVOH blend in an amount ranging from about 20% to about 60% by weight, preferably from about 30% to about 40% by weight, of the total PVOH polymer in the blend, the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof, the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at 20°C of about 10 cP to about 30 cP, and is present in the PVOH resin blend in an amount ranging from about 40% to about 80% by weight, preferably from about 60% to about 70% by weight, of the total PVOH polymer in the blend. The container system according to any one of items 133 to 152.

[0324] 154. The container system of any of paragraphs 133 to 153, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20° C. of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[0325] 155. The container system according to any of paragraphs 133 to 154, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0326] 156. The container system of any of paragraphs 133 to 155, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C., the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0327] 157. A container system according to any one of paragraphs 133 to 156, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% to about 95% by weight of the film.

[0328] 158. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as measured by a dissolution chamber test; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) an average tensile strength value of at least about 10 N / mm 2 Item 158. The container system according to any one of items 133 to 157, having at least one, or at least two, or all three of the modulus values.

[0329] 159. The container system of any of paragraphs 133 to 158, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0330] 160. The container system of claim 159, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0331] 161. The container system of any one of paragraphs 133 to 160, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0332] 162. A container system according to any one of items 133 to 161, wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

[0333] 163. A container system according to any one of paragraphs 133 to 162, wherein the pouch comprises at least two compartments, or at least three compartments.

[0334] 164. The container system of any of paragraphs 133 to 163, wherein the fragrance comprises from about 15% to about 60% by weight of the fragrance of a non-persistent fragrance ingredient selected from quadrant I fragrance ingredients, quadrant II fragrance ingredients, quadrant III fragrance ingredients, and combinations thereof.

[0335] 165. A container system according to any one of paragraphs 133 to 164, wherein the fragrance comprises from about 2% to about 15% by weight of the fragrance of quadrant I fragrance ingredients.

[0336] 166. A container system according to any one of paragraphs 133 to 165, wherein the fragrance comprises: a) about 2% to about 15%, preferably about 3% to about 12%, more preferably about 4% to about 10% of a quadrant I fragrance component of the fragrance accord; b) about 2.5% to about 25%, preferably about 3% to about 20%, more preferably about 5% to about 15% of a quadrant II fragrance component; c) about 10% to about 50%, preferably about 15% to about 45%, more preferably about 20% to about 40% of a quadrant III fragrance component; and / or d) about 40% to about 85%, preferably about 45% to about 75%, more preferably about 40% to about 65% of a quadrant IV fragrance component.

[0337] 167. A container system according to any one of paragraphs 133 to 166, wherein a portion of the fragrance is encapsulated in a core-shell encapsulant.

[0338] 168. The container system according to any one of items 133 to 167, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0339] 169. The container system according to paragraphs 133 to 168, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0340] 170. A container system according to any one of paragraphs 133 to 169, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent, of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance, of a fragrance raw material having a boiling point below 250°C.

[0341] 171. The container system according to any of paragraphs 133 to 170, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent, of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance, of a fragrance raw material having a cLogP value greater than 0.

[0342] 172. A container system according to any of paragraphs 133 to 171, wherein the film further comprises at least one plasticizer, and wherein at least one of the organic solvents is the same as the plasticizer (the "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0343] 173. A container system according to any one of paragraphs 133 to 172, wherein the household care composition comprises from about 5% to about 70% surfactant by weight of the composition.

[0344] 174. The container system of any one of paragraphs 133 to 173, wherein the household care composition is a fabric care composition.

[0345] 175. A container system according to any one of paragraphs 133 to 174, wherein the sealable container is resealable.

[0346] 176. A container system according to any one of paragraphs 133 to 175, wherein the sealable container is selected from a soft bag and a rigid tub.

[0347] 177. A method for treating a substrate such as a fabric, comprising the steps of opening a sealed container and accessing a pouch contained in the interior space of the container, the pouch being as described in any one of paragraphs 1 to 44, preferably the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film, the household care composition comprising about 0.1% to about 10% by weight of the household care composition of a fragrance and about 1% to about 50% by weight of the household care composition of an organic solvent, the film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first anionic monomer unit and a vinyl alcohol monomer unit. 16. The method of claim 15, further comprising the steps of: a) a PVOH polymer comprising a first PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, and the PVOH resin blend further comprising a second PVOH polymer selected from the group consisting of: a) a PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, or b) a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; and contacting a substrate to be treated with the household care composition.

[0348] 178. Use of a water-soluble film for providing a pleasant scent experience upon opening a container, the water-soluble film forming a pouch according to any one of paragraphs 1 to 44, preferably the film forming the pouch and at least partially encapsulating a household care composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising a first anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit, the PVOH resin blend further comprising a second PVOH polymer selected from the group consisting of: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit, or b) a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0349] 179. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of the total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and, optionally, vinyl acetate units; 1. A household care composition comprising: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% quadrant I fragrance ingredients, from 2.5% to 25% quadrant II fragrance ingredients, from 10% to 50% quadrant III fragrance ingredients, and from 40% to 85% quadrant IV fragrance ingredients. (iv) A container system that does not contain a fragrance encapsulated in a core / shell encapsulation.

[0350] 180. The container system of paragraph 179, wherein the first PVOH polymer is present at about 70% to about 90% by weight of the total PVOH polymer in the film, and the second PVOH polymer is present at about 10% to about 30% by weight.

[0351] 181. The container system of any one of paragraphs 179 to 180, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetate, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, a salt of the foregoing, or an alkali metal salt of the foregoing, an ester of the foregoing, and combinations thereof.

[0352] 182. The container system of paragraph 181, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0353] 183. The container system of paragraph 182, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0354] 184. The container system of paragraph 183, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[0355] 185. The container system of any one of paragraphs 179 to 184, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol% to about 5.0 mol%, preferably from about 2 mol% to about 4 mol% of the first PVOH polymer.

[0356] 186. The container system of any one of paragraphs 179 to 185, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0357] 187. The container system of any one of paragraphs 179 to 186, wherein the first PVOH polymer is present in an amount ranging from about 65% to about 80% by weight of the total PVOH polymer in the film.

[0358] 188. The container system of any one of paragraphs 179 to 187, wherein the second PVOH polymer is present in an amount ranging from about 20% by weight to about 45% by weight of the total PVOH polymer in the film.

[0359] 189. The first PVOH polymer is present in the PVOH blend in a range of about 65% to about 90% by weight, or about 65% to about 80% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; Item 179-188, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at 20 ° C. of about 10 cP to about 30 cP and is present in the PVOH resin blend in a range of about 10% to about 45% by weight, or about 20% to about 45% by weight, of the total PVOH polymer in the blend. Container system according to any one of items 179 to 188.

[0360] 190. The container system of any one of paragraphs 179 to 189, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20° C. of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[0361] 191. The container system of any one of paragraphs 179 to 190, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0362] 192. The container system of any one of paragraphs 179 to 191, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C. and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0363] 193. The container system of any one of paragraphs 179 to 192, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 50% to about 95% by weight of the film.

[0364] 194. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 33 MPa as measured by a tensile strength test; and / or c) having at least one, or at least two, or all three of a modulus value of at least about 12 N / mm 2 as measured by a modulus test. The container system according to any one of claims 179 to 193.

[0365] 195. The container system of any one of paragraphs 179 to 194, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0366] 196. The container system of claim 195, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0367] 197. The container system of any one of paragraphs 179 to 196, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinkers, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0368] 198. The container system of any one of paragraphs 179 to 197, wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

[0369] 199. A container system according to any one of paragraphs 179 to 198, wherein the pouch comprises at least two compartments, or at least three compartments.

[0370] 200. The container system of any one of paragraphs 179 to 199, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0371] 201. The container system of any one of paragraphs 179 to 200, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0372] 202. The container system of any one of paragraphs 179 to 201, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[0373] 203. The container system of any one of paragraphs 179 to 202, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[0374] 204. The container system of any one of paragraphs 179 to 203, wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0375] 205. The container system of any one of paragraphs 179 to 204, wherein the household care composition comprises from about 5% to about 70% surfactant by weight of the composition.

[0376] 206. The container system of any one of paragraphs 179 to 205, wherein the household care composition is a fabric care composition.

[0377] 207. A container system according to any one of paragraphs 179 to 206, wherein the sealable container is resealable.

[0378] 208. The container system of any one of paragraphs 179 to 207, wherein the sealable container is selected from a soft bag and a rigid tub.

[0379] 209. A method for treating a substrate, such as a fabric, comprising the steps of: Opening the sealed container; accessing a pouch contained within the interior space of the container, the pouch including a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of the total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; At least a portion of the water-soluble film is dissolved; combining the pouch with water thereby releasing at least a portion of the household care composition; Contacting the substrate to be treated with the household care composition, 1. A household care composition comprising: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% quadrant I fragrance ingredients, from 2.5% to 25% quadrant II fragrance ingredients, from 10% to 50% quadrant III fragrance ingredients, and from 40% to 85% quadrant IV fragrance ingredients. (iv) no fragrance encapsulated in the core / shell encapsulation.

[0380] 210. Use of a water-soluble film to form a pouch at least partially enclosing a compartment containing a household care composition comprising a fragrance and an organic solvent, the household care composition being selected from the group consisting of (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of the total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[0381] 211. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; 1. A household care composition comprising: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) A container system that does not contain a fragrance encapsulated in a core / shell encapsulation.

[0382] 212. The container system of paragraph 211, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropane sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, 2-methylacrylamido-2-methylpropane sulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, preferably alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

[0383] 213. The container system of paragraph 212, wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[0384] 214. The container system of paragraph 213, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[0385] 215. The container system of paragraph 214, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[0386] 216. The container system of any one of paragraphs 211 to 215, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol% to about 5.0 mol%, preferably from about 2 mol% to about 4 mol% of the first PVOH polymer.

[0387] 217. The container system of any one of paragraphs 211 to 216, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[0388] 218. The container system of any one of paragraphs 211 to 217, wherein the first PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0389] 219. The container system of any one of paragraphs 211 to 218, wherein the second anionic monomer unit is different from the first anionic monomer unit.

[0390] 220. The container system of any one of paragraphs 211-219, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetate, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, a salt of the foregoing, or an alkali metal salt of the foregoing, an ester of the foregoing, and combinations thereof.

[0391] 221. The container system of any one of paragraphs 211 to 220, wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, salts thereof, and combinations thereof.

[0392] 222. The first PVOH polymer is present in the PVOH blend in a range of about 50% by weight to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 222. The container system of any one of paragraphs 211 to 221, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% to about 50% by weight of the total PVOH polymer in the blend, and the second monomer unit is derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[0393] 223. The container system of any one of paragraphs 211 to 222, wherein the first PVOH polymer has a first incorporation level (a1) of a first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of a second anionic monomer unit, and the absolute value of |a1-a2| is greater than 0 when the first and second anionic monomers are the same.

[0394] 224. The container system of item 223, wherein a1 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the first PVOH polymer, a2 is in the range of about 1 mol% to about 5 mol%, preferably about 1 mol% to about 3 mol%, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol% to about 3 mol%, or about 1 mol% to about 3 mol%.

[0395] 225. The container system of any one of paragraphs 211 to 224, wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[0396] 226. The container system of any one of paragraphs 211 to 225, wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[0397] 227. The container system of any one of paragraphs 211 to 226, wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[0398] 228. The container system of any one of paragraphs 211 to 227, wherein the second PVOH polymer is present in an amount ranging from about 10% to about 90% by weight of the total PVOH polymer in the film.

[0399] 229. The container system of any one of paragraphs 211 to 228, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20° C. of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[0400] 230. The container system of any one of paragraphs 211 to 229, wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[0401] 231. The container system of any one of paragraphs 211 to 230, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C., the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[0402] 232. The container system of any one of paragraphs 211 to 231, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 50% to about 95% by weight of the film.

[0403] 233. A water-soluble film having the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 33 MPa as measured by a tensile strength test; and / or c) The container system according to any one of claims 211 to 232, having at least one, or at least two, or all three of a modulus value of at least about 12 N / mm2 as measured by a modulus test.

[0404] 234. The container system of any one of paragraphs 211 to 233, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[0405] 235. The container system of claim 234, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[0406] 236. The container system of any one of paragraphs 211 to 235, wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinkers, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[0407] 237. The container system of any one of paragraphs 211 to 236, wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

[0408] 238. A container system according to any one of paragraphs 211 to 237, wherein the pouch comprises at least two compartments, or at least three compartments.

[0409] 239. The container system according to any one of paragraphs 211 to 238, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[0410] 240. The container system according to any one of paragraphs 211 to 239, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[0411] 241. The container system according to any one of paragraphs 211 to 240, wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent, of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance, of a fragrance raw material having a boiling point below 250°C.

[0412] 242. The container system of any one of paragraphs 211 to 241, wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent, of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance, of a fragrance raw material having a cLogP value greater than 0.

[0413] 243. The container system of any one of paragraphs 211 to 242, wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (the "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[0414] 244. The container system of any one of paragraphs 211 to 243, wherein the household care composition comprises from about 5% to about 70% surfactant by weight of the composition.

[0415] 245. The container system of any one of paragraphs 211 to 244, wherein the household care composition is a fabric care composition.

[0416] 246. A container system according to any one of paragraphs 211 to 245, wherein the sealable container is resealable.

[0417] 247. The container system according to any one of paragraphs 211 to 246, wherein the sealable container is selected from a soft bag and a rigid tub.

[0418] 248. A method for treating a substrate, such as a fabric, comprising the steps of: Opening the sealed container; accessing a pouch contained within the interior space of the container, the pouch including a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; The household care composition comprises from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent, the household care composition comprising (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; the film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; contacting the substrate to be treated with the household care composition.

[0419] 249. Use of a water-soluble film to form a pouch at least partially enclosing a compartment containing a household care composition comprising a fragrance and an organic solvent, the household care composition being selected from the group consisting of (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; 1. Use wherein the water-soluble film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising a first anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, and the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units.

[0420] Test Method The following test methods are used to determine some of the specific characteristics described herein.

[0421] Melting Chamber Residue Test Water-soluble films characterized by or tested for insoluble residue by the Dissolution Chamber (DC) test are analyzed as follows using the following materials: 1. Beaker (4000ml), 2. Stainless steel washer (OD 3.5" (88.9mm), ID 1.875" (47.6mm), thickness 0.125" (3.18mm)), 3. Styrene-butadiene rubber gasket (OD 3.375" (85.7mm), ID 1.91" (48.5mm), thickness 0.125" (3.18mm)), 4. Stainless steel screen (OD 3.0 inch (76.2 mm), 200 x 200 mesh, wire OD 0.0021 inch (0.053 mm), 304SS stainless steel wire cloth), 5. Thermometer (0℃~100℃, accurate to ±1℃), 6. Cutting punch (diameter 1.5 inches (38.1 mm)), 7. Timer (accurate to the nearest second), 8. Reverse osmosis (RO) water, 9. Binder clips (size #5 or equivalent), 10. Aluminum pot (OD 2.0 inches (50.8 mm)), and 11. Sonicator.

[0422] For each film tested, three specimens are cut using a cutting punch from the selected test film having a thickness of 3.0±0.10 mil (or 76.2±2.5 μm). If cut from a film web, the specimens should be cut from equally spaced areas of the web along the cross direction of the web. Each specimen is then analyzed using the following procedure: 1. Weigh the film specimen and track the specimen throughout the test. Record the initial film mass (F0). 2. Weigh two sets of sonicated clean, dry screens for each specimen and track them throughout the test. Record the initial screen mass (collectively S0 for the sum of the two screens). 3. Assemble the test specimen dissolution chamber by sandwiching the specimen flat between the center of the two screens, followed by two rubber gaskets (one gasket on each side between the screens and washers), then the film centers of the two washers. 4. Secure the melting chamber assembly with four binder clips evenly spaced around the washer and fold the clips over. 5. Fill a beaker with 1,500 ml of reverse osmosis water at laboratory temperature (72 ± 3°F, 22 ± 2°C) and record the room temperature. 6. Set the timer for the prescribed soaking time of 5 minutes. 7. Place the dissolution chamber assembly into the beaker, immediately start the timer, and insert the dissolution chamber assembly into the water at an entry angle of approximately 45 degrees. This entry angle helps remove any air bubbles from the chamber. The dissolution chamber assembly is allowed to rest against the beaker bottom such that the specimen film is positioned horizontally at approximately 10 mm from the bottom. The four folded binder clips on the dissolution chamber assembly are adequate to maintain a film clearance of approximately 10 mm from the beaker bottom, although any other equivalent support means may be used. At the predetermined elapsed immersion time of 8.5 minutes, the dissolution chamber assembly is slowly removed from the beaker at an angle of approximately 45 degrees. 9. Hold the melting chamber assembly horizontally over the aluminum pan to catch any drips from the screen and carefully remove the binder clips, washers, and gaskets. Do not pry apart the pinched screen. 10. Place the sandwiched screen (i.e., screen / residual undissolved film / screen) on top of an aluminum pan and dry in a 100 °C oven for 30 minutes. 11. Weigh the dried set of sandwiched screens, including any remaining undissolved film therein. Measure any dried film droplets that were captured in the pan and retrieved therefrom (e.g., by scraping) when the dissolution chamber assembly was first removed from the beaker and during drying, and add to this dried screen mass. The final mass of the sandwiched screens (including the dried film droplets, collectively S f ) is recorded. 12. Percent Residue Left on Film Specimen ("DC Residue"): DC Residue % = 100 * ((S f Calculate -S0) / F0). 13. Clean the sandwiched screens by soaking them in a beaker of RO water for approximately 20 minutes. Then disassemble them and give them a final rinse with a sonicator (turned on and filled with RO water) for at least 5 minutes or until no residue is visible on the screens.

[0423] Proper performance of water-soluble films according to the present disclosure is characterized by a DC residue value of about 45% or less by weight or about 48% or less by weight as measured by the DC Test. The water-soluble films can have a DC value of at least 1, 2, 5, 10, or 20% by weight and / or up to about 15, 20, 30, 40, 45, or 48% by weight (e.g., about 5% to about 48% by weight, about 10% to about 45% by weight, about 20% to about 45% by weight, or about 30% to about 40% by weight).

[0424] Tensile Strength Test and Modulus Test Water-soluble films characterized or tested for tensile strength by the Tensile Strength (TS) test and modulus (or tensile stress) by the Modulus (MOD) test are analyzed as follows. The procedure includes the determination of tensile strength and modulus at 100% elongation according to ASTM D 882 ("Standard Test Method for Tensile Properties of Thin Plastic Sheets") or equivalent. An INSTRON tensile testing machine (Model 5544 Tensile Tester or equivalent) is used to collect film data. A minimum of three specimens, each cut with a reliable cutting tool to ensure dimensional stability and repeatability, are tested in the machine direction (MD) (if applicable) for each measurement. Testing is performed in a standard laboratory atmosphere of 23±2.0°C and 35±5% relative humidity. For tensile strength or modulus determination, a one-inch wide (2.54 cm) sample of a single film sheet having a thickness of 3.0±0.15 mil (or 76.2±3.8 μm) is prepared. The samples are then transferred to an INSTRON tensile tester for testing while minimizing exposure to a 35% relative humidity environment. The tensile tester is prepared according to the manufacturer's instructions, equipped with a 500N load cell, and calibrated. The correct grips and faces are installed (INSTRON grips with model number 2702-032 faces, rubber coated and 25mm wide, or equivalent). The samples are placed in the tensile tester, stretched, and analyzed to determine 100% modulus (i.e., the stress required to achieve 100% film elongation) and tensile strength (i.e., the stress required to break the film).

[0425] Optionally, the film may be characterized by certain mechanical properties that make it suitable for processing into articles, such as filmed packets.

[0426] The water-soluble film according to the present disclosure may be characterized by a TS value of at least about 24 MPa or about 28 MPa as measured by the TS test. Generally, a higher TS value is desirable since it corresponds to a stronger pouch seal when the film is the marginal or weakest element of the seal. The water-soluble film may have a TS value of at least about 24, 26, 28, 30, 33, or 35 MPa and / or up to about 32, 34, 40, 45, or 50 MPa (e.g., about 24 MPa to about 36 MPa or about 28 MPa to about 32 MPa). Alternatively or additionally, the upper limit of the suitable TS value range may be the TS value for the corresponding water-soluble film having only a single PVOH polymer or PVOH copolymer (e.g., a corresponding single resin film having a higher TS value) of the PVOH polymer and PVOH copolymer in the PVOH resin blend.

[0427] The water-soluble films according to the present disclosure have a mechanical strength of at least about 11 N / mm2 as measured by the MOD test. 2 or about 12N / mm 2 A higher MOD value is generally desirable because it corresponds to a pouch that is stiffer and less likely to deform and stick together when loaded one on top of the other during manufacturing or in the final consumer packaging. Water-soluble films may be characterized by a MOD value of at least about 11, 12, or 13 N / mm 2 and / or up to about 13, 14, 15, or 16 N / mm 2 (For example, about 11N / mm 2 ~Approx. 15N / mm 2 or about 12N / mm 2 ~Approx. 14N / mm 2 Alternatively or additionally, the upper limit of the suitable MOD value range may be the MOD value for a corresponding water-soluble film having only a single PVOH polymer or PVOH copolymer of the PVOH polymer and PVOH copolymer in the PVOH resin blend (e.g., a corresponding single resin film having a higher MOD value).

[0428] Example, Part 2 The following examples are intended to be illustrative and non-limiting in nature.

[0429] Example 1: Sample resin blends and films and pouches made therefrom. Table 2 lists some exemplary PVOH polymer resins (A-J) that can be used to make PVOH films. [Table 2]

[0430] Table 3 shows various PVOH polymer blends (#1-12) that can be made from the polymers listed in Table 1. The blends are listed by the relative weight percent of each polymer in each PVOH blend. The PVOH resin blends can be used in combination with other film additives (e.g., plasticizers, etc.) to make water-soluble films. Such films can be used to form pouches containing household care compositions, such as laundry detergent. [Table 3]

[0431] Example 2: Pouch containing a household care composition. The single compartment pouch and / or multi-compartment pouch can be formed from any one of the films described in Example 1 (e.g., a film including any of PVOH Blends 1-12). The pouch can contain a household care composition according to the following formulation: Each perfume comprises at least 2% Quadrant I perfume raw material, by weight of the perfume. More specifically, as shown in Table 4, the perfumes of Examples A and B comprise from about 2% to about 10% Q1 perfume raw material, from about 5% to about 10% Q2 perfume raw material, from about 30% to about 40% Quadrant 3 raw material, and from about 50% to about 60% Quadrant 4 raw material, by weight of the total perfume. [Table 4]

[0432] Example 3: Pouch exudation test. Multi-compartment pouches were made from water-soluble films having blends of polyvinyl alcohol monomethyl maleate copolymer and polyvinyl alcohol copolymer. The polyvinyl alcohol monomethyl maleate copolymer made up 30%-50% of the polyvinyl alcohol resin component, and polyvinyl alcohol homopolymers having viscosities ranging from 4 cP to 18 cP (4% solution viscosity at 20° C.) and degrees of hydrolysis of 86%-88% made up the remaining 70%-50% of the polyvinyl alcohol resin component, with each polyvinyl alcohol homopolymer component being present in the resin blend in amounts ranging from 10%-70%. The weight average viscosities of the polyvinyl alcohol resin blends are shown in Table 5 below. The films were thermoformed into multi-compartment pouches according to FIG. 6, with each compartment containing a different liquid laundry detergent formulation. The pouch had two separate compartments (Top 1 and Top 2, e.g., compartments 3 and 4 in FIG. 6) on one side of the pouch and a third separate compartment (compartment 2 in FIG. 6) on the bottom of the pouch.

[0433] The pouches were held under stress conditions (80% relative humidity, 32°C) for two weeks, then multiple capacitance measurements (with a CORNEOMETER capacitance probe) were taken on each of the pouch compartment exterior surfaces to measure the relative amount of solvent migration to the pouch compartment surfaces. The average value for each region is reported. Solvent migration to the surface is referred to in the art as exudation, and thus the measurements are reported in Table 5 as average exudation measurements, with higher values ​​indicating relatively more solvent exudation, a negative characteristic. The exudation values ​​in Table 5 are relative measurements and may be considered dimensionless. [Table 5]

[0434] The data are graphed in Figures 7-9. As shown in Table 5 and in the figures, solvent migration (exudation) decreased as the average viscosity of the polyvinyl alcohol resin blends increased across the range of blends.

[0435] The dimensions and values ​​disclosed herein are not to be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

[0436] All documents cited herein, including any cross-referenced or related patents or applications, and any patent applications or patents to which this application claims priority or benefit, are incorporated herein by reference in their entirety, unless expressly excluded or limited. The citation of any document is not admitted to be prior art with respect to any invention disclosed or claimed herein, or to teach, suggest, or disclose such any invention, either alone or in any combination with any other reference(s). Furthermore, to the extent that any meaning or definition of a term in this specification conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this specification applies.

[0437] While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended in the appended claims to cover all such changes and modifications that are within the scope of this invention. Yet another aspect of the present invention may be as follows. [1] A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; The household care composition comprises: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) A container system that does not contain a fragrance encapsulated in a core / shell encapsulation. [2] The container system described in [1], wherein the first PVOH polymer is present at about 70% to about 90% by weight of the total PVOH polymer in the film, and the second PVOH polymer is present at about 10% to about 30% by weight. [3] The container system of [1], wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, a salt thereof, or an alkali metal salt thereof, an ester thereof, and combinations thereof. [4] The container system according to [3], wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit. [5] The container system described in [4], wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof. [6] The container system according to [5], wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof. [7] The container system according to [1], wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer. [8] The container system of [1], wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film. [9] The container system of [1], wherein the first PVOH polymer is present in an amount ranging from about 65% by weight to about 80% by weight of the total PVOH polymer in the film.

[10] The container system of [1], wherein the second PVOH polymer is present in an amount ranging from about 20% by weight to about 45% by weight of the total PVOH polymer in the film.

[11] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 65% to about 90% by weight, or from about 65% to about 80% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The container system according to claim 1, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at 20° C. of about 10 cP to about 30 cP and is present in the PVOH resin blend in a range of about 10% to about 45% by weight, or about 20% to about 45% by weight, of the total PVOH polymer in the blend.

[12] The container system of [1], wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20°C of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[13] The container system described in [1], wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[14] The container system of [1], wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20°C, the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20°C, and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[15] The container system described in [1], wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 50% to about 95% by weight of the film.

[16] The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 33 MPa as measured by a tensile strength test; and / or c) the container system described in [1] having at least one, or at least two, or all three of a modulus value of at least about 12 N / mm2 as measured by a modulus test.

[17] The container system described in [1], wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[18] The container system described in

[17] , wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[19] The container system described in [1], wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[20] The container system described in [1], wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[21] The container system described in [1], wherein the pouch includes at least two compartments, or at least three compartments.

[22] The container system described in [1], wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[23] The container system described in [1], wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[24] The container system described in [1], wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[25] The container system described in [1], wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[26] The container system of [1], wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[27] The container system of [1], wherein the household care composition comprises from about 5% to about 70% by weight of the composition of a surfactant.

[28] The container system described in [1], wherein the household care composition is a fabric care composition.

[29] The container system described in [1], wherein the sealable container is resealable.

[30] The container system described in [1], wherein the sealable container is selected from a soft bag and a rigid tub.

[31] A method for treating a substrate such as a fabric, comprising the steps of: Opening the sealed container; accessing a pouch contained within the interior space of the container, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; Contacting a substrate to be treated with said household care composition, The household care composition comprises: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) A container system that does not contain a fragrance encapsulated in a core / shell encapsulation.

[32] Use of a water-soluble film to form a pouch at least partially enclosing a compartment containing a household care composition comprising a fragrance and an organic solvent, the household care composition being selected from the group consisting of (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; the film comprises at least about 50% by weight of a polyvinyl alcohol (PVOH) resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of total PVOH polymer in the film and comprises first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH comprising a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[33] A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; The household care composition comprises: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) A container system that does not contain a fragrance encapsulated in a core / shell encapsulation.

[34] The container system of

[48] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[35] The container system according to

[34] , wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[36] The container system described in

[35] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[37] The container system according to

[36] , wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[38] The container system according to

[33] , wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[39] The container system described in

[33] , wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[40] The container system described in

[33] , wherein the first PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[41] The container system described in

[33] , wherein the second anionic monomer unit is different from the first anionic monomer unit.

[42] The container system of

[33] , wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[43] The container system described in

[33] , wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, its salts, and combinations thereof.

[44] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 50% by weight to about 90% by weight of all PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The container system of claim 33, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% by weight to about 50% by weight of the total PVOH polymer in the blend, and the second monomer unit is derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[45] The container system of

[33] , wherein the first PVOH polymer has a first incorporation level (a1) of the first anionic monomer unit and the second PVOH polymer has a second incorporation level (a2) of the second anionic monomer unit, and when the first and second anionic monomers are the same, the absolute value of |a1-a2| is greater than 0.

[46] The container system according to

[45] , wherein a1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer, a2 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer, and |a1-a2|, preferably a1-a2, is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[47] The container system described in

[33] , wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[48] ​​The container system described in

[33] , wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[49] The container system described in

[33] , wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[50] The container system described in

[33] , wherein the second PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[51] The container system of

[33] , wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20°C of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

[52] The container system described in

[33] , wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[53] The container system of

[33] , wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20°C, the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20°C, and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer is in the range of 0 cP to about 10 cP.

[54] The container system described in

[33] , wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 50% to about 95% by weight of the film.

[55] The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength of at least about 33 MPa as measured by a tensile strength test; Intensity value, and / or c) the container system described in

[33] above, having at least one, or at least two, or all three of a modulus value of at least about 12 N / mm2 as measured by a modulus test.

[56] The container system described in

[33] , wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[57] The container system described in

[56] , wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[58] The container system described in

[33] , wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[59] The container system described in

[33] , wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[60] The container system described in

[33] , wherein the pouch includes at least two compartments, or at least three compartments.

[61] The container system described in

[33] , wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[62] The container system described in

[33] , wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[63] The container system described in

[33] , wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[64] The container system described in

[33] , wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[65] The container system of

[33] , wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[66] The container system of

[33] , wherein the household care composition comprises from about 5% to about 70% by weight of the composition of a surfactant.

[67] The container system described in

[33] , wherein the household care composition is a fabric care composition.

[68] The container system described in

[33] , wherein the sealable container is resealable.

[69] The container system described in

[33] , wherein the sealable container is selected from a soft bag and a rigid tub.

[70] A method for treating a substrate such as a fabric, comprising the steps of: Opening the sealed container; accessing a pouch contained within the interior space of the container, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprising from about 0.1% to about 10% by weight of the household care composition of a fragrance and from about 1% to about 50% by weight of the household care composition of an organic solvent, the household care composition comprising (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; the film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; contacting the substrate to be treated with said household care composition.

[71] Use of a water-soluble film to form a pouch at least partially enclosing a compartment containing a household care composition comprising a fragrance and an organic solvent, the household care composition being selected from the group consisting of (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of quadrant I, quadrant II, and quadrant III fragrance ingredients (ii) From about 2% to about 15% of quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I fragrance ingredients, from 2.5% to 25% of quadrant II fragrance ingredients, from 10% to 50% of quadrant III fragrance ingredients, and from 40% to 85% of quadrant IV fragrance ingredients. (iv) does not contain encapsulated fragrance in a core / shell encapsulation; 1. The water-soluble film of claim 1, wherein the water-soluble film comprises at least 50% by weight of a polyvinyl alcohol (PVOH) resin blend, the PVOH resin blend comprising a first PVOH polymer comprising a first anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units, and the PVOH resin blend further comprises a second PVOH polymer comprising a second anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units.

[72] A water-soluble film suitable for containing a composition comprising a fragrance and an organic solvent, or adapted to selectively release the fragrance over time, comprising: the film comprises a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[73] The film according to

[72] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, the salts thereof, preferably the alkali metal salts thereof, the esters thereof, and combinations thereof.

[74] The film described in

[73] , wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[75] The film described in

[74] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[76] The film described in

[75] , wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, a salt thereof, and combinations thereof.

[77] The film according to

[72] , wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[78] The film described in

[72] , wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[79] The film described in

[72] , wherein the first PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of all PVOH polymers in the film.

[80] The film described in

[72] , wherein the second PVOH polymer contains a second anionic monomer unit.

[81] The film described in

[80] , wherein the second anionic monomer unit is different from the first anionic monomer unit.

[82] The film of

[80] , wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, the salts thereof, preferably the alkali metal salts thereof, the esters thereof, and combinations thereof.

[83] The film described in

[80] , wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, its salts, and combinations thereof.

[84] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 50% by weight to about 90% by weight of all PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The film of

[80] , wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% by weight to about 50% by weight of the total PVOH polymer in the blend, and the second monomer unit is derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[85] The first PVOH polymer has a first incorporation level (a 1 ), and the second PVOH polymer has a second incorporation level (a 2 ), and when the first and second anionic monomers are the same, |a 1 -a2 The film described in

[80] above, wherein the absolute value of | is greater than 0. 〔86〕a 1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer; 2 is about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer; 1 -a 2 |, preferably a 1 -a 2 is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[87] The film described in

[80] , wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[88] The film described in

[80] , wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[89] The film described in

[80] , wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[90] The film described in

[72] , wherein the second PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[91] The film described in

[72] , wherein the second PVOH polymer is a PVOH homopolymer.

[92] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 20% to about 60% by weight, preferably from about 30% to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The PVOH homopolymer has a 4% solution viscosity (μ 2 ) which is present in the PVOH resin blend in an amount ranging from about 40% by weight to about 80% by weight, preferably from about 60% by weight to about 70% by weight, of the total PVOH polymer in the blend.

[93] The second PVOH polymer has a 4% solution viscosity (μ ) at 20 ° C. of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP. 2 The film according to

[72] above, characterized in that

[94] The film according to

[72] , wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[95] The first PVOH polymer has a first 4% solution viscosity (μ 1 ), wherein the second PVOH polymer has a second 4% solution viscosity (μ 2 ) and the absolute viscosity difference |μ 2 -μ 1 The film according to

[72] above, wherein | is in the range of 0 cP to about 10 cP.

[96] The film described in

[72] , wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% by weight to about 95% by weight of the film.

[97] The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 The film according to claim 72, having at least one, or at least two, or all three of the modulus values.

[98] The film described in

[72] , wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[99] The film described in

[98] , wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[100] The film described in

[72] , wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[101] The film described in

[72] , wherein the water-soluble film further contains one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[102] The film described in

[72] above, in the form of a pouch, the pouch optionally comprising at least two compartments, or at least three compartments.

[103] The film described in

[72] , wherein the fragrance comprises from about 15% by mass to about 60% by mass of the fragrance of a non-persistent fragrance component selected from quadrant I fragrance components, quadrant II fragrance components, quadrant III fragrance components, and combinations thereof.

[104] The film described in

[72] , wherein the fragrance contains quadrant I fragrance components in an amount of about 2% to about 15% by weight of the fragrance.

[105] The fragrance is: a) from about 2% to about 15%, preferably from about 3% to about 12%, more preferably from about 4% to about 10% by weight of a quadrant I fragrance ingredient of the fragrance accord; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; d) about 40% by mass to about 85% by mass, preferably about 45% by mass to about 75% by mass, and more preferably about 40% by mass to about 65% by mass of a quadrant IV fragrance component.

[106] The film described in

[72] , wherein at least a portion of the fragrance is encapsulated in a core-shell encapsulant.

[107] The film described in

[72] , wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[108] The film described in

[72] , wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[109] The film described in

[72] , wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[110] The film described in

[72] , wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[111] The film described in

[72] , wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[112] The film according to

[72] , wherein the composition contains about 5% to about 70% by weight of a surfactant based on the composition.

[113] The film described in

[72] above, wherein the composition is a fabric care composition.

[114] A container comprising the film described in any one of

[72] to

[113] .

[115] A method for making a water-soluble film containing a composition comprising a fragrance and an organic solvent and adapted to selectively release the fragrance over time, comprising including a polyvinyl alcohol (PVOH) resin blend in the film; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[116] The method of

[115] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinylacetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinylsulfonic acid, allylsulfonic acid, ethylenesulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[117] The method according to

[116] , wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[118] The method according to

[117] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[119] The method according to

[118] , wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[120] The method according to

[115] , wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[121] The method according to

[115] , wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[122] The method of

[115] , wherein the first PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of all PVOH polymers in the film.

[123] The method of

[115] , wherein the second PVOH polymer comprises a second anionic monomer unit.

[124] The method according to

[123] , wherein the second anionic monomer unit is different from the first anionic monomer unit.

[125] The method of

[123] , wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[126] The method according to

[123] , wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, its salts, and combinations thereof.

[127] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 50% by weight to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The method of claim 123, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% by weight to about 50% by weight of total PVOH polymer in the blend, and the second monomer unit is derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[128] The first PVOH polymer has a first incorporation level (a 1 ), and the second PVOH polymer has a second incorporation level (a 2 ), and when the first and second anionic monomers are the same, |a 1 -a 2 The method according to claim 123, wherein the absolute value of | is greater than 0. 〔129〕a 1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer; 2 is about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer; 1 -a 2 |, preferably a 1 -a 2 The method according to

[128] , wherein the content of the aryl group is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[130] The method of

[123] , wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[131] The method of

[123] , wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[132] The method of

[123] , wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[133] The method of

[115] , wherein the second PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[134] The method according to

[115] , wherein the second PVOH polymer is a PVOH homopolymer.

[135] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 20% by weight to about 60% by weight, preferably from about 30% by weight to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The PVOH homopolymer has a 4% solution viscosity (μ 2 ) present in the PVOH resin blend in an amount ranging from about 40% by weight to about 80% by weight, preferably from about 60% by weight to about 70% by weight, of the total PVOH polymer in the blend.

[136] The second PVOH polymer has a 4% solution viscosity (μ ) at 20 ° C. of about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP. 2 The method according to claim 115, further comprising:

[137] The method according to

[115] , wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[138] The first PVOH polymer has a first 4% solution viscosity (μ 1 ), wherein the second PVOH polymer has a second 4% solution viscosity (μ 2 ) and the absolute viscosity difference |μ 2 -μ 1 The method according to claim 115, wherein | is in the range of 0 cP to about 10 cP.

[139] The method of

[115] , wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% by weight to about 95% by weight of the film.

[140] The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 The method of claim 115, wherein the polymer has at least one, or at least two, or all three of the modulus values.

[141] The method according to

[115] , wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[142] The method according to

[141] , wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[143] The method of

[115] , wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[144] The method according to

[115] , wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[145] The method according to

[115] , in the form of a pouch, the pouch optionally containing at least two compartments, or at least three compartments.

[146] The method according to

[115] , wherein the fragrance comprises from about 15% by weight to about 60% by weight of the fragrance of a non-persistent fragrance ingredient selected from quadrant I fragrance ingredients, quadrant II fragrance ingredients, quadrant III fragrance ingredients, and combinations thereof.

[147] The method according to

[115] , wherein the fragrance comprises quadrant I fragrance ingredients in an amount of from about 2% to about 15% by weight of the fragrance.

[148] The said fragrance: a) from about 2% to about 15%, preferably from about 3% to about 12%, more preferably from about 4% to about 10% by weight of a quadrant I fragrance ingredient of the fragrance accord; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; d) about 40% by weight to about 85% by weight, preferably about 45% by weight to about 75% by weight, more preferably about 40% by weight to about 65% by weight of quadrant IV fragrance ingredients.

[149] The method according to

[115] , wherein at least a portion of the fragrance is encapsulated in a core-shell encapsulant.

[150] The method according to

[115] , wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[151] The method according to

[115] , wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[152] The method according to

[115] , wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent, of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance, of a fragrance raw material having a boiling point below 250°C.

[153] The method according to

[115] , wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent, of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance, of a fragrance raw material having a cLogP value greater than 0.

[154] The method of

[115] , wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[155] The method according to

[115] , wherein the composition comprises about 5% to about 70% by weight of the composition of a surfactant.

[156] The method according to

[115] , wherein the composition is a fabric care composition.

[157] A use of a water-soluble film for providing a pleasant scent experience upon opening a container, the water-soluble film forming a pouch and at least partially enclosing a composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[158] A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a non-household care composition at least partially enclosed in a compartment by the water-soluble film; the non-household care composition comprising from about 0.1% to about 10% by weight of the non-household care composition of a fragrance and from about 1% to about 50% by weight of the non-household care composition of an organic solvent; the film comprises a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) the container system further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

[159] The container system of

[158] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[160] The container system described in

[159] , wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

[161] The container system described in

[160] , wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

[162] The container system described in

[161] , wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

[163] The container system described in

[158] , wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol %, of the first PVOH polymer.

[164] The container system described in

[158] , wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

[165] The container system described in

[158] , wherein the first PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[166] The container system described in

[158] , wherein the second PVOH polymer comprises a second anionic monomer unit.

[167] The container system described in

[166] , wherein the second anionic monomer unit is different from the first anionic monomer unit.

[168] The container system of

[166] , wherein the second anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts thereof, preferably alkali metal salts thereof, esters thereof, and combinations thereof.

[169] The container system described in

[166] , wherein the second anionic monomer unit is derived from a sulfonated anionic monomer unit, preferably from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, its salts, and combinations thereof.

[170] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 50% by weight to about 90% by weight of the total PVOH polymers in the blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The container system of claim 166, wherein the second PVOH polymer is present in the PVOH blend in a range of about 10% by weight to about 50% by weight of the total PVOH polymers in the blend, and the second monomer units are derived from a member selected from the group consisting of acrylamidomethylpropanesulfonic acid, alkali metal salts thereof, and combinations thereof.

[171] The first PVOH polymer has a first incorporation level (a 1 ), and the second PVOH polymer has a second incorporation level (a 2 ), and when the first and second anionic monomers are the same, |a 1 -a 2 The container system described in

[166] , wherein the absolute value of | is greater than 0. 〔172〕a 1 is in the range of about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the first PVOH polymer; 2 is about 1 mol % to about 5 mol %, preferably about 1 mol % to about 3 mol %, of the second PVOH polymer; 1 -a 2 |, preferably a 1 -a 2 The container system described in

[171] , wherein the content of the polyisocyanate is in the range of about 0 mol % to about 3 mol %, or about 1 mol % to about 3 mol %.

[173] The container system described in

[166] , wherein the second anionic monomer unit is present in the second PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol % of the second PVOH polymer.

[174] The container system described in

[166] , wherein the second anionic monomer unit is present in the film in an amount ranging from about 0.2 mol % to about 4.5 mol % of the total PVOH polymer in the film.

[175] The container system described in

[166] , wherein the first anionic monomer unit and the second anionic monomer unit are both present in a combined amount ranging from about 2.0 mol % to about 3.5 mol % of the total PVOH polymer in the film.

[176] The container system described in

[158] , wherein the second PVOH polymer is present in an amount ranging from about 10% by weight to about 90% by weight of the total PVOH polymer in the film.

[177] The container system described in

[158] , wherein the second PVOH polymer is a PVOH homopolymer.

[178] The first PVOH polymer is present in the PVOH blend in an amount ranging from about 20% to about 60% by weight, preferably from about 30% to about 40% by weight, of the total PVOH polymers in the blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; The PVOH homopolymer has a 4% solution viscosity (μ 2 ) present in the PVOH resin blend in an amount ranging from about 40% to about 80% by weight, preferably from about 60% to about 70% by weight, of the total PVOH polymer in the blend.

[179] The second PVOH polymer has a 4% solution viscosity (μ) at 20 ° C. of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP. 2 The container system described in

[158] above, characterized by:

[180] The container system described in

[158] , wherein the second PVOH polymer is characterized by a degree of hydrolysis of about 60% to about 99%, preferably about 80% to about 98%, preferably about 85% to about 95%, preferably about 87% to about 92%.

[181] The first PVOH polymer has a first 4% solution viscosity (μ 1 ), wherein the second PVOH polymer has a second 4% solution viscosity (μ 2 ) and the absolute viscosity difference |μ 2 -μ 1 The container system described in

[158] , wherein | is in the range of 0 cP to approximately 10 cP.

[182] The container system described in

[158] , wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 30% to about 95% by weight of the film.

[183] ​​The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as determined by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 The container system of claim 158, having at least one, or at least two, or all three of the modulus values.

[184] The container system described in

[158] , wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

[185] The container system described in

[184] , wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

[186] The container system described in

[158] , wherein the water-soluble film further comprises one or more components selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

[187] The container system described in

[158] , wherein the water-soluble film further contains one or more plasticizers in an amount ranging from about 1% by weight to about 40% by weight of the film.

[188] The container system described in

[158] , wherein the pouch includes at least two compartments, or at least three compartments.

[189] The container system described in

[158] , wherein the fragrance comprises non-persistent fragrance ingredients selected from quadrant I fragrance ingredients, quadrant II fragrance ingredients, quadrant III fragrance ingredients, and combinations thereof, in an amount of from about 15% to about 60% by weight of the fragrance.

[190] The container system described in

[158] , wherein the fragrance comprises quadrant I fragrance ingredients in an amount of from about 2% to about 15% by weight of the fragrance.

[191] The said perfume: a) from about 2% to about 15%, preferably from about 3% to about 12%, more preferably from about 4% to about 10% by weight of a quadrant I fragrance ingredient of the fragrance accord; b) from about 2.5% to about 25% by weight, preferably from about 3% to about 20% by weight, more preferably from about 5% to about 15% by weight, of a quadrant II fragrance component; c) about 10% to about 50% by weight, preferably about 15% to about 45% by weight, more preferably about 20% to about 40% by weight of quadrant III fragrance ingredients; d) about 40% to about 85% by weight, preferably about 45% to about 75% by weight, and more preferably about 40% to about 65% by weight of a quadrant IV fragrance ingredient.

[192] The container system described in

[158] , wherein a portion of the fragrance is encapsulated in a core-shell encapsulant.

[193] The container system described in

[158] , wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

[194] The container system described in

[158] , wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof.

[195] The container system described in

[158] , wherein the organic solvent comprises at least about 10% by weight, or at least about 20% by weight, of the total organic solvent of an organic solvent having a boiling point above 250°C, and the fragrance comprises at least about 10% by weight, or at least about 20% by weight, or at least about 30% by weight, of the total fragrance of a fragrance raw material having a boiling point below 250°C.

[196] The container system described in

[158] , wherein the organic solvent comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total organic solvent of an organic solvent having a cLogP value less than 0, and the fragrance comprises at least about 50% by weight, or at least about 80% by weight, or at least about 90% by weight, or even at least about 95% by weight of the total fragrance of a fragrance raw material having a cLogP value greater than 0.

[197] The container system of

[158] , wherein the film further comprises at least one plasticizer, and at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

[198] The container system described in

[158] , wherein the non-household care composition comprises from about 5% to about 70% surfactant by weight of the composition.

[199] The container system described in

[158] , wherein the non-household care composition is selected from one or more of agricultural compositions, automotive compositions, aviation compositions, food and nutritional compositions, industrial compositions, livestock compositions, marine compositions, medical compositions, commercial compositions, military and paramilitary compositions, office compositions, recreational and park compositions, and pet compositions, optionally including cleaning compositions and detergent compositions.

[200] The container system described in

[158] , wherein the sealable container is resealable.

[201] The container system described in

[158] , wherein the sealable container is selected from a soft bag and a rigid tub.

[202] A method for treating a substrate, comprising the steps of: Opening the sealed container; accessing a pouch contained within the interior space of the container, the pouch comprising a water-soluble film and a non-household care composition at least partially enclosed in a compartment by the water-soluble film; the non-household care composition comprising from about 0.1% to about 10% by weight of the non-household care composition of a fragrance and from about 1% to about 50% by weight of the non-household care composition of an organic solvent; the film comprises a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the non-household care composition; contacting the substrate to be treated with said non-household care composition.

[203] A use of a water-soluble film for providing a pleasant scent experience upon opening a container, the water-soluble film forming a pouch and at least partially enclosing a non-household care composition comprising a fragrance and an organic solvent in a compartment, the water-soluble film comprising a polyvinyl alcohol (PVOH) resin blend; the PVOH resin blend comprises a first PVOH polymer comprising first anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate units; The PVOH resin blend comprises: a) a PVOH polymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit; or b) further comprising a second PVOH polymer selected from the group consisting of PVOH homopolymers consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

Claims

1. 1. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprises from about 0.1% to about 10% by weight of the household care composition of a fragrance, and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least about 50% by weight of a PVOH resin blend; a first PVOH polymer is present at about 65% to about 90% by weight of the total PVOH polymer in said film and is a copolymer comprising a first anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer present at about 10% to about 35% by weight, the second PVOH polymer being a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units; A container system, wherein the household care composition does not include any of: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of Quadrant I, Quadrant II, and Quadrant III perfume ingredients (ii) from about 2% to about 15% of Quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I perfume ingredients, from 2.5% to 25% of quadrant II perfume ingredients, from 10% to 50% of quadrant III perfume ingredients, and from 40% to 85% of quadrant IV perfume ingredients. (iv) Perfume encapsulated in a core / shell encapsulation. (Quadrant I perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP below 3.0; Quadrant II perfumes are perfume raw materials that have a boiling point equal to or greater than 250° C. and a ClogP less than 3.0; Quadrant III perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP greater than 3.0; Quadrant IV perfumes are perfume raw materials that have a boiling point of 250° C. or greater and a ClogP of 3.0 or greater.

2. 10. The container system of claim 1, wherein the first PVOH polymer is present at about 70% to about 90% by weight and the second PVOH polymer is present at about 10% to about 30% by weight of total PVOH polymer in the film.

3. 2. The container system of claim 1, wherein the first anionic monomer unit is derived from a member selected from the group consisting of vinyl acetic acid, maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, fumaric acid, monoalkyl fumarates, dialkyl fumarates, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, salts of the foregoing, or alkali metal salts of the foregoing, esters of the foregoing, and combinations thereof.

4. The container system of claim 3 , wherein the first anionic monomer unit is derived from a carboxylated anionic monomer unit.

5. 5. The container system of claim 4, wherein the first anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof.

6. 6. The container system of claim 5, wherein the first anionic monomer unit is derived from a monoalkyl maleate selected from the group consisting of monomethyl maleate, salts thereof, and combinations thereof.

7. 10. The container system of claim 1, wherein the first anionic monomer unit is present in the first PVOH polymer in an amount ranging from about 1.0 mol % to about 5.0 mol %, preferably from about 2 mol % to about 4 mol % of the first PVOH polymer.

8. 10. The container system of claim 1, wherein the first anionic monomer unit is present in the film in an amount ranging from about 0.5 mol % to about 5 mol % of the total PVOH polymer in the film.

9. 10. The container system of claim 1, wherein the first PVOH polymer is present in an amount ranging from about 65% to about 80% by weight of total PVOH polymer in the film.

10. 10. The container system of claim 1, wherein the second PVOH polymer is present in an amount ranging from about 20% to about 45% by weight of total PVOH polymer in the film.

11. the first PVOH polymer is present in the PVOH resin blend in a range from about 65% to about 90%, or from about 65% to about 80% by weight of all PVOH polymers in the PVOH resin blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 10. The container system of claim 1, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at 20° C. of from about 10 cP to about 30 cP and is present in the PVOH resin blend in a range of from about 10% to about 45%, or from about 20% to about 45%, by weight of total PVOH polymer in the PVOH resin blend.

12. 10. The container system of claim 1, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20° C. of about 3.0 to about 40 cP, or about 7 to about 40 cP, or about 10 cP to about 40 cP, or about 10 cP to about 30 cP, or about 12 cP to about 25 cP.

13. 2. The container system of claim 1, wherein the second PVOH polymer is characterized by a degree of hydrolysis of from about 60% to about 99%, preferably from about 80% to about 98%, preferably from about 85% to about 95%, preferably from about 87% to about 92%.

14. 2. The container system of claim 1, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C. and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and an absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer ranges from 0 cp to about 10 cP.

15. 10. The container system of claim 1, wherein the PVOH resin blend is present in the water-soluble film in an amount ranging from about 50% to about 95% by weight of the film.

16. The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 33 MPa as measured by a tensile strength test; and / or c) at least about 12 N / mm as measured by a modulus test 2 13. The container system of claim 1, having at least one, or at least two, or all three of the modulus values:

17. 10. The container system of claim 1, wherein the water-soluble film further comprises at least a third water-soluble polymer, preferably a polymer other than a PVOH polymer.

18. 18. The container system of claim 17, wherein the third water-soluble polymer is selected from the group consisting of polyethyleneimine, polyvinylpyrrolidone, polyalkylene oxide, polyacrylamide, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polyamide, gelatin, methylcellulose, carboxymethylcellulose and salts thereof, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, starch, modified starch, guar gum, acacia gum, xanthan gum, carrageenan, polyacrylates and salts thereof, copolymers thereof, blends thereof, and combinations thereof.

19. 10. The container system of claim 1, wherein the water-soluble film further comprises one or more ingredients selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, extenders, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

20. The container system of claim 1 , wherein the water-soluble film further comprises one or more plasticizers in an amount ranging from about 1% to about 40% by weight of the film.

21. The container system of claim 1 , wherein the pouch comprises at least two compartments, or at least three compartments.

22. 10. The container system of claim 1, wherein the organic solvent is selected from the group consisting of monoalcohols, polyols, glycols, and combinations thereof.

23. 10. The container system of claim 1, wherein the organic solvent is selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycols, sorbitol, and mixtures thereof.

24. 2. The container system of claim 1, wherein the organic solvent comprises at least about 10%, or at least about 20%, by weight of the total organic solvent, of organic solvents having a boiling point above 250° C., and the fragrance comprises at least about 10%, or at least about 20%, or at least about 30%, by weight of the total fragrance, of fragrance raw materials having a boiling point below 250° C.

25. 2. The container system of claim 1, wherein the organic solvent comprises at least about 50%, or at least about 80%, or at least about 90%, or even at least about 95% by weight of the total organic solvent of organic solvents having a cLogP value less than 0, and the fragrance comprises at least about 50%, or at least about 80%, or at least about 90%, or even at least about 95% by weight of the total fragrance of fragrance raw materials having a cLogP value greater than 0.

26. 2. The container system of claim 1, wherein the film further comprises at least one plasticizer, and wherein at least one of the organic solvents is the same as the plasticizer (a "common solvent / plasticizer"), preferably the common solvent / plasticizer is selected from glycerol, sorbitol, dipropylene glycol, 1,2-propanediol, 1,3-propanediol, and combinations thereof.

27. 10. The container system of claim 1, wherein the household care composition comprises from about 5% to about 70% of a surfactant by weight of the composition.

28. The container system of claim 1 , wherein the household care composition is a fabric care composition.

29. The container system of claim 1 , wherein the sealable container is resealable.

30. The container system of claim 1 , wherein the sealable container is selected from a soft bag and a rigid tub.

31. 1. A method for treating a substrate, such as a fabric, comprising the steps of: Opening a sealed container including the container system of claim 1; accessing a pouch contained within an interior space of the container; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; and contacting the substrate to be treated with said household care composition; The method, wherein the household care composition does not include any of (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of Quadrant I, Quadrant II, and Quadrant III perfume ingredients (ii) from about 2% to about 15% of Quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I perfume ingredients, from 2.5% to 25% of quadrant II perfume ingredients, from 10% to 50% of quadrant III perfume ingredients, and from 40% to 85% of quadrant IV perfume ingredients. (iv) Perfume encapsulated in a core / shell encapsulation. (Quadrant I perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP below 3.0; Quadrant II perfumes are perfume raw materials that have a boiling point equal to or greater than 250° C. and a ClogP less than 3.0; Quadrant III perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP greater than 3.0; Quadrant IV perfumes are perfume raw materials that have a boiling point of 250° C. or greater and a ClogP of 3.0 or greater.

32. 1. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a household care composition at least partially enclosed in a compartment by the water-soluble film; the household care composition comprises from about 0.1% to about 10% by weight of the household care composition of a fragrance, and from about 1% to about 50% by weight of the household care composition of an organic solvent; the film comprises at least 50% by weight of a PVOH resin blend; the PVOH resin blend comprises a first PVOH polymer that is a copolymer comprising a first anionic monomer unit, vinyl alcohol monomer units, and optionally vinyl acetate units; wherein the PVOH resin blend further comprises a second PVOH polymer that is a copolymer comprising a second anionic monomer unit, a vinyl alcohol monomer unit, and optionally a vinyl acetate unit, and where the first anionic monomer unit and the second anionic monomer unit are the same, the second PVOH polymer differs from the first PVOH polymer in viscosity or incorporation level of anionic monomer units; A container system, wherein the household care composition does not include any of: (i), (ii), (iii), or (iv): (i) from about 15% to about 60% of Quadrant I, Quadrant II, and Quadrant III perfume ingredients (ii) from about 2% to about 15% of Quadrant I fragrance ingredients (iii) from about 2% to about 15% of quadrant I perfume ingredients, from 2.5% to 25% of quadrant II perfume ingredients, from 10% to 50% of quadrant III perfume ingredients, and from 40% to 85% of quadrant IV perfume ingredients. (iv) Perfume encapsulated in a core / shell encapsulation. (Quadrant I perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP below 3.0; Quadrant II perfumes are perfume raw materials that have a boiling point equal to or greater than 250° C. and a ClogP less than 3.0; Quadrant III perfumes are perfume raw materials that have a boiling point below 250° C. and a ClogP greater than 3.0; Quadrant IV perfumes are perfume raw materials that have a boiling point of 250° C. or greater and a ClogP of 3.0 or greater.

33. 1. A method for treating a substrate, such as a fabric, comprising the steps of: opening a sealed container containing the container system of claim 32; accessing a pouch contained within an interior space of the container; combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the household care composition; contacting the substrate to be treated with said household care composition.

34. 1. A water-soluble film containing a composition comprising a perfume and an organic solvent selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof, suitable or adapted to selectively release said perfume over time, the film comprises at least 50% by weight of a PVOH resin blend, based on the total weight of the film; the PVOH resin blend comprises a first PVOH polymer that is a copolymer comprising first anionic monomer units derived from carboxylated anionic monomer units selected from the group of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof, vinyl alcohol monomer units, and optionally vinyl acetate units; The film, wherein the PVOH resin blend further comprises a second PVOH polymer that is a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

35. the first PVOH polymer is present in the PVOH resin blend in a range from about 50% to about 90% by weight of all PVOH polymers in the PVOH resin blend; the first anionic monomer unit is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 35. The film of claim 34, wherein the second PVOH polymer is present in the PVOH resin blend in a range from about 10% to about 50% by weight of total PVOH polymer in the PVOH resin blend.

36. the first PVOH polymer is present in the PVOH resin blend in a range from about 20% to about 60% by weight, preferably from about 30% to about 40% by weight of all PVOH polymers in the PVOH resin blend; the first anionic monomer unit of the first PVOH polymer is derived from a member selected from the group consisting of monomethyl maleate, an alkali metal salt thereof, and combinations thereof; 35. The film of claim 34, wherein the PVOH homopolymer is characterized by a 4% solution viscosity (μ2) at about 20° C. of from about 10 cP to about 30 cP, and is present in the PVOH resin blend in a range of from about 40% to about 80%, preferably from about 60% to about 70%, by weight of total PVOH polymer in the PVOH resin blend.

37. 35. The film of claim 34, wherein the second PVOH polymer is characterized by a 4% solution viscosity (μ2) at 20° C. of from about 10 cP to about 40 cP, or from about 10 cP to about 30 cP, or from about 12 cP to about 25 cP.

38. 35. The film of claim 34, wherein the second PVOH polymer is characterized by a degree of hydrolysis of from about 60% to about 99%, preferably from about 80% to about 98%, preferably from about 85% to about 95%, preferably from about 87% to about 92%.

39. 35. The film of claim 34, wherein the first PVOH polymer is characterized by a first 4% solution viscosity (μ1) at 20° C. and the second PVOH polymer is characterized by a second 4% solution viscosity (μ2) at 20° C., and the absolute viscosity difference |μ2-μ1| for the first PVOH polymer and the second PVOH polymer ranges from 0 cp to about 10 cP.

40. The water-soluble film has the following characteristics: a) a residue value of about 48% by weight or less as measured by dissolution chamber testing; b) an average tensile strength value of at least about 20 MPa as measured by a tensile strength test; and / or c) at least about 10 N / mm as measured by a modulus test 2 35. The film of claim 34, having at least one, or at least two, or all three of the modulus values:

41. 35. The film of claim 34 in the form of a pouch, the pouch optionally comprising at least two compartments, or at least three compartments.

42. 35. A container comprising the film of claim 34.

43. 1. A method of making a water-soluble film containing a composition comprising a perfume and an organic solvent selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycol, sorbitol, and mixtures thereof, the film being adapted to selectively release the perfume over time, the method comprising including in the film at least 50% by weight of a PVOH resin blend, based on the total weight of the film; the PVOH resin blend comprises a first PVOH polymer that is a copolymer comprising first anionic monomer units derived from carboxylated anionic monomer units selected from the group of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof, vinyl alcohol monomer units, and optionally vinyl acetate units; The method wherein said PVOH resin blend further comprises a second PVOH polymer which is a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

44. 1. A container system comprising: a sealable container having a wall defining an interior space; at least one pouch in the interior space, the pouch comprising a water-soluble film and a non-household care composition at least partially enclosed in a compartment by the water-soluble film; the non-household care composition comprising from about 0.1% to about 10% by weight of the non-household care composition of a fragrance; and from about 1% to about 50% by weight of the non-household care composition of an organic solvent selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycols, sorbitol, and mixtures thereof; the film comprises at least 50% by weight of a PVOH resin blend, based on the total weight of the film; the PVOH resin blend comprises a first PVOH polymer that is a copolymer comprising first anionic monomer units derived from carboxylated anionic monomer units selected from the group of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof, vinyl alcohol monomer units, and optionally vinyl acetate units; The container system, wherein the PVOH resin blend further comprises a second PVOH polymer that is a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units.

45. 1. A method for treating a substrate, comprising: opening a sealed container containing the container system of claim 44; accessing a pouch contained within the interior space of the container, the pouch comprising a water-soluble film and a non-household care composition at least partially enclosed in a compartment by the water-soluble film; wherein the non-household care composition comprises from about 0.1% to about 10% by weight of the non-household care composition of a fragrance; and from about 1% to about 50% by weight of the non-household care composition of an organic solvent selected from the group consisting of glycerol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, diethylene glycol, polyalkylene glycols, sorbitol, and mixtures thereof; the film comprises at least 50% by weight of a PVOH resin blend, based on the total weight of the film; the PVOH resin blend comprises a first PVOH polymer that is a copolymer comprising first anionic monomer units derived from carboxylated anionic monomer units selected from the group of maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, and combinations thereof, vinyl alcohol monomer units, and optionally vinyl acetate units; the PVOH resin blend further comprises a second PVOH polymer which is a PVOH homopolymer consisting essentially of vinyl alcohol monomer units and optionally vinyl acetate units. combining the pouch with water such that at least a portion of the water-soluble film dissolves, thereby releasing at least a portion of the non-household care composition; contacting the substrate to be treated with said non-household care composition.

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