Multi-compartment water-soluble unit dose article

Abstract

To provide a unit dose detergent article having improved solubility.SOLUTION: Provided is a multi-compartment water-soluble unit dose detergent article including a plurality of compartments in a generally superposed relationship. The water-soluble unit dose detergent article 1 includes a water-soluble film wrapping a fabric care or household care detergent composition. The detergent composition includes a detersive surfactant. The water-soluble film includes a first film 2 including a specific polyvinyl alcohol polymer blend.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] A multi-compartment water-soluble unit dose detergent article comprising a plurality of compartments in a generally overlapping relationship and a method of making the same. [Background technology]

[0002] Water-soluble unit-dose detergent articles, particularly those made from water-soluble films containing polyvinyl alcohol, have become very popular for use in automatic dishwashing and laundry. The film encases the detergent. When the water-soluble unit-dose detergent article is added to water, the film dissolves and releases the detergent.

[0003] Although rapid dissolution of the article is highly desirable, in some cases, the interaction between the detergent and polyvinyl alcohol during initial dissolution and contact with water can cause gelation, which slows further dissolution, resulting in a delay in the start of cleaning and, in some cases, leaving residue on the treated article. This is more serious when the cleaning process is performed with a short and low-temperature wash program. When a water-soluble unit-dose detergent article is used in a laundry process, residue may adhere to fabrics or the washing machine. The residue can be redissolved, but may require additional steps from the user. Summary of the Invention [Problem to be solved by the invention]

[0004] It is therefore an object of the present invention to provide a unit dose detergent article with improved solubility.It is another object of the present invention to provide a unit dose detergent article with improved solubility in short and low temperature wash programs. [Means for solving the problem]

[0005] A first aspect of the present invention is a multi-compartment water-soluble unit dose article comprising a plurality of compartments in a generally overlapping relationship. The water-soluble unit dose article comprises a water-soluble film and a detergent composition. The detergent composition is enclosed by the water-soluble film. The detergent composition comprises a surfactant, and the water-soluble film comprises a first film. The first film comprises a polyvinyl alcohol polymer blend, and the polyvinyl alcohol polymer blend comprises: i) 1 wt% to 50 wt%, preferably 5 wt% to 30 wt%, more preferably 10 wt% to 20 wt% of a polymer A in the polymer blend, the polymer A comprising anionic monomer units, vinyl alcohol monomer units, and vinyl acetate monomer units; Polymer A is an average degree of hydrolysis of 60% to less than 80%, preferably 70% to less than 80%, more preferably 75% to less than 80%, and Polymer A having a 4% solution viscosity at 20°C of 3 cP to 20 cP, preferably 3 cP to 15 cP, more preferably 3 cP to 10 cP; ii) 50% to 99% by weight, preferably 70% to 95% by weight, more preferably 80% to 90% by weight of the polymer blend of polymer B, wherein polymer B consists essentially of vinyl alcohol monomer units and vinyl acetate monomer units; Polymer B is an average degree of hydrolysis of 70% to less than 80%, preferably 75% to less than 80%, and and Polymer B, which has a 4% solution viscosity at 20°C of 10 cP to 40 cP, preferably 10 cP to 30 cP, and more preferably 10 cP to 20 cP.

[0006] A second aspect of the present invention is a process for making the multi-compartment water-soluble unit dose detergent article of the present invention, comprising: i) thermoforming and / or vacuum forming the film to create a cavity; ii) filling the cavity with a detergent composition or a portion thereof; and iii) closing the cavity with a pre-formed compartment containing the detergent composition or a portion thereof to create a multi-compartment water-soluble unit dose detergent article containing overlapping compartments. [Brief explanation of the drawings]

[0007] [Figure 1] A water-soluble unit dose article according to the present invention. [Figure 2] 1 depicts the setup for measuring the gelation coefficient G. [Figure 3] 1 shows a schematic diagram of the basic setup for the pouch strength test. DETAILED DESCRIPTION OF THE INVENTION

[0008] As used herein, the articles including "the," "a," and "an," when used in a claim or the specification, are understood to mean one or more of what is claimed or described.

[0009] As used herein, the terms "include", "includes" and "including" are meant to be open-ended.

[0010] A "water-soluble unit dose detergent article" is also referred to as a "pouch."

[0011] The water-soluble unit dose detergent article or "first film" of the present invention is also referred to herein as the "film of the present invention."

[0012] All percentages, ratios, and proportions used herein are percent by weight of the composition unless otherwise specified. All average values ​​are calculated "by weight" of the composition unless expressly indicated otherwise.

[0013] Unless otherwise specified, all measurements are performed at 25°C.

[0014] Unless otherwise noted, all ingredient or composition concentrations are in terms of the active portion of that ingredient or composition and are exclusive of impurities, e.g., residual solvents or by-products, that may be present in commercial sources of such ingredient or composition.

[0015] Water-soluble unit dose article A first aspect of the present invention is a multi-compartment water-soluble unit dose detergent article comprising a plurality of compartments in a generally overlapping relationship. "Multiple," as used herein, means two or more. The water-soluble unit dose detergent article comprises at least two compartments in an overlapping configuration (i.e., one on top of the other) and a fabric care, preferably a laundry detergent composition, or a household care, preferably an automatic dishwashing detergent composition. The detergent composition is encased in a water-soluble film. The detergent composition is described in more detail below. The water-soluble unit dose article comprises two or more compartments, at least two of which are in an overlapping configuration. The article can comprise three, four, five or more compartments. The article comprises a first water-soluble film and, optionally, a second water-soluble film and a third water-soluble film. The first water-soluble film, the second water-soluble film, and the third water-soluble film are described in more detail below.

[0016] The water-soluble unit dose detergent article is configured so that the detergent composition (preferably laundry or automatic dishwashing) does not leak from the compartment during storage, however, when the water-soluble unit dose detergent article is added to water, the water-soluble film dissolves, releasing the contents of the inner compartment into the wash liquor.

[0017] Compartment should be understood to mean an enclosed interior space within the unit dose article that holds a detergent composition, preferably a laundry detergent composition or an automatic dishwashing detergent composition.

[0018] The first water-soluble film has a first side and a second side, the second water-soluble film, if present, has a first side and a second side, and the third and any subsequent water-soluble films, if present, have a first side and a second side.

[0019] The first side of the first water-soluble film is sealed to the second side of the second water-soluble film to create at least a first compartment between the first and second water-soluble films, and the first side of the second water-soluble film is sealed to the second side of the third water-soluble film to create at least a second compartment between the second and third water-soluble films, with the at least second compartment disposed above the at least first compartment.

[0020] Preferably, the first water-soluble film and the second water-soluble film are sealed by solvent sealing, heat sealing, or a combination thereof, preferably by solvent sealing. More preferably, the solvent sealing solution comprises an aqueous solvent, a non-aqueous solvent, or a mixture thereof. Even more preferably, the solvent sealing solution comprises water. Preferably, the solvent sealing solution comprises at least 95% by weight, or even at least 98% by weight, or even at least 99% by weight, or even 100% by weight of water. The solvent sealing solution can be applied to the film by any suitable method, including contact and / or non-contact methods. For example, the solvent solution can be applied in a contact transfer process using, for example, a contact member comprising a non-absorbent or substantially impermeable material, for example, an anilox roller, a rubber (e.g., EPDM) roller, or any combination thereof, optionally in combination with a doctor blade. The sealing solution can be applied using a drawdown bar, a Mayer bar, or similar device. The sealing solution can be applied, for example, in the form of a pad or roller, using a contact member comprising an absorbent material, such as natural felt, synthetic felt, porous plastic, foam, sponge, microfiber, cotton, polyester, extruded polyester fiber, nonwoven web, etc. The sealing solution can be applied by a discharge nozzle or a spray nozzle. Any combination of the above methods and devices is contemplated. Preferably, the solvent sealing solution is applied by a felt roll, a discharge nozzle, a spray nozzle, or a combination thereof, more preferably by a felt roll, alternatively by a spray nozzle. Preferably, the solvent sealing solution is applied to the second surface of the second water-soluble film, with the second surface of the second water-soluble film facing the first surface of the first water-soluble film.

[0021] Preferably, the second water-soluble film and the third water-soluble film are sealed by solvent sealing, heat sealing, or a combination thereof, preferably by solvent sealing. More preferably, the solvent sealing solution comprises an aqueous solvent, a non-aqueous solvent, or a mixture thereof. Even more preferably, the solvent sealing solution comprises water. Preferably, the solvent sealing solution comprises at least 95% by weight, or even at least 98% by weight, or even at least 99% by weight, or even 100% by weight of water. The solvent sealing solution can be applied to the film by any suitable method, including contact and / or non-contact methods. For example, the solvent solution can be applied in a contact transfer process using, for example, a contact member comprising a non-absorbent or substantially impermeable material, for example, an anilox roller, a rubber (e.g., EPDM) roller, or any combination thereof, optionally in combination with a doctor blade. The sealing solution can be applied using a drawdown bar, a Mayer bar, or similar device. The sealing solution can be applied, for example, in the form of a pad or roller, using a contact member comprising an absorbent material, such as natural felt, synthetic felt, porous plastic, foam, sponge, microfiber, cotton, polyester, extruded polyester fiber, nonwoven web, etc. The sealing solution can be applied by a discharge nozzle or a spray nozzle. Combinations of any of the above methods and devices are contemplated. Preferably, the solvent sealing solution is applied by a felt roll, a discharge or spray nozzle, or a combination thereof, more preferably by a felt roll, alternatively by a spray nozzle. Preferably, the solvent sealing solution is applied to the first surface of the second water-soluble film, and the first surface of the second water-soluble film faces the second surface of the third water-soluble film.

[0022] Preferably, the unit-dose article includes at least a third compartment, preferably at least a third and a fourth compartment, between the second and third water-soluble films. Preferably, the second and third compartments, preferably the second, third, and fourth compartments, are arranged side-by-side, and the second and third compartments, preferably the second, third, and fourth compartments, are arranged above the first compartment. Preferably, the second and third compartments, or the second, third, and fourth compartments, are smaller than the first compartment. The second and third compartments, or the second, third, and fourth compartments, may be the same size or different sizes. Some of the compartments may be the same size, and some may be different sizes.

[0023] The detergent composition according to the present invention may be contained in at least one of the compartments, for example, it may be contained in only one compartment, or it may be contained in two compartments, or even three compartments, or even four compartments.

[0024] Each compartment may contain the same or a different detergent composition. The different detergent compositions may all be in the same form or in different forms. Preferably, at least one of the compositions, and more preferably all of the compositions, is in liquid form.

[0025] Figure 1 discloses a water-soluble unit dose detergent article (1) according to the present invention. Shown are a first water-soluble film (2) and a third water-soluble film (3) sealed together at a sealing area (4). Not shown is a second water-soluble film disposed between the first water-soluble film (2) and the third water-soluble film (3). A detergent composition (5) (preferably laundry or automatic dishwashing) is contained within the water-soluble unit dose article (1).

[0026] The intermediate structure contemplated as an embodiment of the present disclosure may include an element or portion of an article in an unsealed state, allowing a composition to be dispensed into the intermediate structure prior to final filling of each compartment. Thus, for example, the intermediate structure may include a first sealed compartment and a second, partially open compartment ready for filling. The water-soluble unit-dose article is configured to prevent leakage of one or more compositions from the two or more compartments during storage. However, when the water-soluble unit-dose article is added to water, the water-soluble film dissolves, releasing the contents of the inner compartment into the wash solution.

[0027] Preferably, the water-soluble unit dose article is coated with a lubricant, preferably the lubricant is selected from talc, zinc oxide, silica, siloxane, zeolite, silicic acid, alumina, sodium sulfate, potassium sulfate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starch, clay, kaolin, gypsum, cyclodextrin, or mixtures thereof.

[0028] First water-soluble film The water-soluble unit-dose detergent article comprises a first water-soluble film. The first water-soluble film of the present invention is water-soluble or water-dispersible. The first water-soluble film preferably has a thickness of 20 to 150 microns, preferably 35 to 125 microns, even more preferably 50 to 110 microns, and most preferably about 76 microns. The first water-soluble film has a first side and a second side.

[0029] The first water-soluble film material can be obtained by casting, blow molding, extrusion or blow extrusion of polymeric materials as known in the art, preferably the first water-soluble film is a solvent-cast water-soluble film.

[0030] The first water-soluble film comprises a polyvinyl alcohol polymer blend. The polymer blend comprises two polymers: polymer A and polymer B. Preferably, the polyvinyl alcohol polymer blend consists essentially of polymer A and polymer B. Preferably, the first film comprises 50% to 90% by weight of the first film of the polyvinyl alcohol polymer blend, preferably 55% to 85% by weight, more preferably 60% to 80% by weight.

[0031] Preferably, the difference in the average degree of hydrolysis between polymer A and polymer B is at most 10%, preferably at most 5%, more preferably between 1% and 3%.

[0032] Preferably, the difference in 4% solution viscosity at 20° C. between polymer A and polymer B is 1 cP to 20 cP, preferably 3 cP to 15 cP, more preferably 5 cP to 12 cP.

[0033] Preferably, the weight average degree of hydrolysis of the polyvinyl alcohol resin blend is less than 84%, or less than 80%, or in the range of 74% to 79%. Preferably, the weight average viscosity of the polyvinyl alcohol resin blend is at least 9 cP, or at least 10 cP, or at least 12 cP, or in the range of 9 cP to 15 cP, or 10 cP to 15 cP, or 12 cP to 14 cP.

[0034] Preferably, the first film has a tensile strength (maximum stress at break) of at least 36 MPa, or at least 38 MPa, or at least 40 MPa up to 50 MPa. Preferably, the first film has a retention value of 54 wt. % or less when measured by a dissolution chamber test at room temperature. Preferably, the first film has a retention value of 75 wt. % or less, preferably 65 wt. % or less, when measured by a dissolution chamber test at 5°C.

[0035] Preferably, the first film has a biodegradation rate according to the OECD 301B test of at least 60% after 60 days, or at least 60% after 28 days. The first film meets the OECD 301B biodegradability requirements.

[0036] Preferably, the polymer blend has a biodegradation rate of at least 60% after 60 days, or at least 60% after 28 days according to the OECD 301B test. The polymer blend meets the OECD 301B biodegradability requirements.

[0037] Preferably, the first film has a dissolution time of less than 120 seconds, preferably less than 70 seconds, more preferably less than 60 seconds according to MSTM-205 at 5°C for a 76 micron thick film.

[0038] Preferably, the aqueous solution comprising the first film and the detergent composition dissolved therein has a gel coefficient of less than 1.25, preferably less than 1.2, more preferably less than 1.15; G=G' / G” where G' is the "storage" or "elastic" modulus; G" is the "loss" or "plastic" modulus; Aqueous solutions are prepared and G' and G" are measured as described herein.

[0039] Polymer A Polymer A comprises anionic monomer units, vinyl alcohol monomer units, and vinyl acetate monomer units. Preferably, the anionic monomer units comprise monomers derived from the group consisting of itaconic acid, monoalkyl itaconate, dialkyl itaconate, itaconic anhydride, and mixtures thereof, preferably itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, and mixtures thereof, more preferably itaconic acid.

[0040] Polymer A contains 0.1 mol % to 4.0 mol %, preferably 0.5 mol % to 3.0 mol %, more preferably 1.0 mol % to 2.0 mol % of anionic monomer units, and preferably the anionic monomer units are itaconic acid.

[0041] The polyvinyl alcohol blend comprises 1% to 50% by weight of the polyvinyl alcohol polymer blend, preferably 5% to 30% by weight, more preferably 10% to 20% by weight of Polymer A. Polymer A has an average degree of hydrolysis of 60% to less than 80%, preferably 70% to less than 80%, more preferably 75% to less than 80%, and a 4% solution viscosity at 20°C of 3 cP to 20 cP, preferably 3 cP to 15 cP, more preferably 3 cP to 10 cP.

[0042] Preferably, the polyvinyl alcohol blend comprises 10% to 20% of Polymer A by weight of the polyvinyl alcohol polymer blend.

[0043] Preferably, polymer A comprises anionic monomer units derived from itaconic acid, and preferably the anionic monomer units are present at 1.0 mol % to 2.0 mol %.

[0044] Preferably, Polymer A has an average degree of hydrolysis of 75% to less than 80%. Preferably, Polymer A has a 4% solution viscosity at 20°C of 3 cP to 10 cP.

[0045] Preferably, the polyvinyl alcohol blend comprises 10% to 20% by weight of the polymer blend of Polymer A, where Polymer A has 1.0 mol % to 2.0 mol % anionic monomer units derived from itaconic acid, an average degree of hydrolysis of 75% to less than 80%, and a 4% solution viscosity at 20°C of 3 cP to 10 cP.

[0046] Polymer B Polymer B consists essentially of vinyl alcohol and vinyl acetate monomer units.

[0047] The polyvinyl alcohol blend comprises 50% to 99% by weight of the polyvinyl alcohol polymer blend, preferably 70% to 95% by weight, and more preferably 80% to 90% by weight of Polymer B. Polymer B has an average degree of hydrolysis of 70% to less than 80%, preferably 75% to less than 80%, and a 4% solution viscosity at 20°C of 10 cP to 40 cP, preferably 10 cP to 30 cP, and more preferably 10 cP to 20 cP.

[0048] Preferably, the polyvinyl alcohol blend comprises 80% to 90% of Polymer B by weight of the polyvinyl alcohol polymer blend.

[0049] Preferably, Polymer B has an average degree of hydrolysis of 75% to less than 80%. Polymer B preferably has a 4% solution viscosity at 20°C of 10 cP to 20 cP.

[0050] Preferably, the polyvinyl alcohol blend comprises 80% to 90% by weight of the polyvinyl alcohol polymer blend of polymer B, wherein polymer B has an average degree of hydrolysis of 75% to less than 80% and a 4% solution viscosity at 20°C of 10 cP to 20 cP.

[0051] Second water-soluble film The water-soluble unit-dose detergent article may include a second water-soluble film. The second water-soluble film is water-soluble or water-dispersible. Preferably, the second water-soluble film has a thickness of 20 to 150 microns, preferably 35 to 125 microns, even more preferably 50 to 110 microns, and most preferably about 76 microns. The second water-soluble film has a first side and a second side.

[0052] The second water-soluble film can be obtained by casting, blow molding, extrusion or blow extrusion of polymeric materials as known in the art, preferably the second water-soluble film is a solvent-cast water-soluble film, more preferably the first and second water-soluble films are solvent-cast water-soluble films.

[0053] The second film comprises a polymer selected from the group consisting of polymer A, polymer B, polymer C, and mixtures thereof. Polymer C comprises polyvinyl alcohol and is different from polymer A, polymer B, and the polymer blend of the first film.

[0054] Polymer C Polymer C comprises polyvinyl alcohol and is different from Polymer A, Polymer B, and the polymer blend of the first film. By "different" herein, it is meant that the polymers differ in at least one characteristic, which may be physical or chemical, for example, the polymers may have the same monomer units but different ratios, the same monomer units but different degrees of hydrolysis, different molecular weights, different viscosities, different anionic monomer units, different polymer blends or polymer blend ratios, etc.

[0055] The polymer C is preferably chosen from: i) A polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units, preferably the carboxylate monomer units are selected from acrylates, methacrylates, maleates, or mixtures thereof, more preferably acrylates. ii) a blend of polymers consisting essentially of vinyl alcohol and vinyl acetate monomer units; and iii) A polymer blend consisting essentially of a polymer consisting of vinyl alcohol and vinyl acetate monomer units, and a polymer consisting essentially of vinyl alcohol, vinyl acetate, and carboxylated monomer units.

[0056] Preferably, Polymer C comprises, or more preferably consists of, a polymer consisting essentially of vinyl alcohol, vinyl acetate, and carboxylated monomer units, wherein the carboxylated monomer units are selected from acrylates, methacrylates, maleates, or mixtures thereof, more preferably acrylates, and the polymer has an average degree of hydrolysis of 80% to 99%, preferably 88% to 99%, a 4% solution viscosity at 20°C of 13 cP to 28 cP, preferably 18 cP to 26 cP, and an average degree of anionic substitution of 1% to 10%, preferably 1% to 4%. Preferably, Polymer C consists essentially of vinyl alcohol, vinyl acetate, and carboxylated monomer units, wherein the carboxylated monomer units are acrylic acid, and the polymer has an average degree of hydrolysis of 88% to 99%, a 4% solution viscosity at 20°C of 18 cP to 26 cP, and an average degree of anionic substitution of 1% to 4%.

[0057] Preferably, polymer C is i) a polymer C consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units in an amount of 1% to 70% by weight, preferably 30% to 70% by weight, of which the polymer has an average degree of hydrolysis of 80% to 99.7%, preferably 85% to 93%, more preferably 87% to 89%, and a 4% solution viscosity at 20°C of 14.5 cP to 25 cP, preferably 17 cP to 24 cP; ii) A polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units, of 30% to 99% by weight, preferably 30% to 70% by weight of Polymer C, wherein the carboxylated monomer units are preferably derived from maleate monomer units, and salts thereof, esters thereof, or anhydrides thereof, most preferably monomethyl maleate monomer units, the polymer having an average degree of hydrolysis of 80% to 99.7%, preferably 85% to 95%, more preferably 88% to 92%, a 4% solution viscosity at 20°C of 4 cP to 40 cP, preferably 10 cP to 25 cP, more preferably 15 cP to 20 cP, and an average degree of anionic substitution of 1% to 10%, more preferably 1% to 8%, more preferably 1% to 4%.

[0058] Preferably, polymer C is i) a polymer consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units in an amount of 30% to 70% by weight of polymer C, wherein the polymer has an average degree of hydrolysis of 87% to 89% and a 4% solution viscosity at 20°C of 17 cP to 24 cP; ii) 30% to 70% by weight of Polymer C, a polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units, wherein the carboxylated monomer units are monomethyl maleate, and the polymer has an average degree of hydrolysis of 88% to 92%, a 4% solution viscosity at 20°C of 15 cP to 20 cP, and an average degree of anionic substitution of 1% to 4%.

[0059] Preferably, polymer C is i) a first polymer consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units, the first polymer having an average degree of hydrolysis of 80% to 92%, preferably 84% to 92%, and a 4% solution viscosity at 20°C of 8 cP to 40 cP, preferably 10 cP to 20 cP, more preferably 12 cP to 14 cP; ii) a second polymer consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units, the second polymer having an average degree of hydrolysis of 80% to 92%, preferably 84% to 92%, and a 4% solution viscosity at 20°C of 1 cP to 20 cP, preferably 3 cP to 15 cP, more preferably 5 cP to 10 cP; The first polymer and the second polymer are present in a weight ratio of about 9:1 to about 1:9, preferably about 6:4 to about 4:6.

[0060] Preferably, polymer C is i) a first polymer consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units, the first polymer having an average degree of hydrolysis of 84% to 92% and a 4% solution viscosity at 20°C of 12 cP to 14 cP; ii) a second polymer consisting essentially of vinyl alcohol monomer units and vinyl acetate monomer units, the second polymer having an average degree of hydrolysis of 84% to 92% and a 4% solution viscosity at 20°C of 5 cP to 10 cP; The first polymer and the second polymer are present in a weight ratio of about 6:4 to about 4:6.

[0061] Third water-soluble film The water-soluble unit-dose detergent article may include a third water-soluble film. The third water-soluble film is water-soluble or water-dispersible. Preferably, the third water-soluble film has a thickness of 20 to 150 microns, preferably 35 to 125 microns, even more preferably 50 to 110 microns, and most preferably about 76 microns. The third water-soluble film has a first side and a second side.

[0062] The third water-soluble film can be obtained by casting, blow molding, extrusion or blow extrusion of polymeric materials as known in the art, preferably the third water-soluble film is a solvent-cast water-soluble film, more preferably the first, second and third water-soluble films are solvent-cast water-soluble films.

[0063] The third film is different from the first and second films and comprises a polymer selected from the group consisting of polymer A, polymer B, polymer C, and mixtures thereof.

[0064] The water-soluble unit-dose detergent article includes an overlapping pouch made from three films. The three films may be the same or different. If the three films are the same, the three films are the first film. If the three films are different, one film is the first film, another film is the second film, and another film is the third film, and any of these films can be the bottom film, middle film, or top film. Alternatively, two films can be the same and one film can be different, with two identical films being the first film and one different film being the second film, or alternatively, one different film being the first film and two identical films being the second film. The different film can be either the top film, middle film, or bottom film.

[0065] Measurement method The average degree of hydrolysis is measured using the standard method JIS K6726.

[0066] The viscosity of polyvinyl alcohol polymers is determined by measuring freshly prepared solutions using a Brookfield LV viscometer equipped with a UL adapter, as described in British Standard EN ISO15023-2:2006 Annex E Brookfield Test method. It is international practice to specify the viscosity of a 4% aqueous solution of polyvinyl alcohol (in deionized water) at 20°C.

[0067] Water-soluble films, including the first, second, and third water-soluble films, can be characterized by or tested for tensile stress according to the Modulus (MOD) test as follows. This procedure involves measuring the modulus at 10% elongation according to ASTM D 882 ("Standard Test Method for Tensile Properties of Thin Plastic Sheeting"). An INSTRON tensile testing device (Model 5544 Tensile Tester or equivalent) is used to collect film data. A minimum of three specimens are cut from each specimen with a reliable cutting tool to ensure dimensional stability and repeatability, and 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. A 1-inch (2.54 cm) wide specimen of a single film sheet with a thickness of 76 μm is prepared. The specimen is then transferred to the INSTRON tensile testing machine, and testing proceeds at 35% relative humidity with minimal environmental exposure. The tensile tester is prepared according to the manufacturer's instructions, equipped with a 500 N load cell, and calibrated. Appropriate grips and faces are installed (INSTRON grips with rubber-coated, 25 mm wide faces, model number 2702-032, or equivalent). Samples are mounted in the tensile tester and analyzed to determine the 100% modulus (i.e., the stress required to achieve 100% film elongation).

[0068] The first water-soluble film has a modulus of at least about 20 N / mm as measured by the MOD test at 35% RH. 2 The MOD value at 10% elongation can be characterized by a 100% modulus value of 100%. Generally, a higher MOD value is desirable because it corresponds to pouches that have greater stiffness and a lower likelihood of deforming and sticking together when stacked on top of each other during manufacturing or in final consumer packaging. Furthermore, the MOD value at 10% elongation corresponds to the film's ability to maintain stiffness rather than loosen and sag when in contact with liquid pouch contents. Specifically, films with higher MOD values ​​correspond to pouches that are less likely to soften and take on a loose, sagging appearance when in contact with liquid pouch contents containing low molecular weight polyols.

[0069] Dissolution chamber test method.

[0070] Within this DC residue test method, for each test film, three specimens are cut from the selected test film having a thickness of 76 μm using a cutting punch. When cutting from a film web made by a continuous process, samples should be cut from areas of the web evenly spaced along the cross direction of the web (i.e., perpendicular to the machine direction), if applicable. Weigh the film specimens and track the specimens throughout the test. The initial film weight (F o ) are recorded. Two sets of sonicated clean, dry screens for each specimen are weighed and the screens are tracked throughout the test. The initial screen weight (as the sum of the two screens combined - S o ) and record the dissolution temperature. Assemble the specimen dissolution chamber by sandwiching the film specimen between the centers of two screens, followed by two rubber gaskets (one gasket on each side between the screen and washer), then the two washers flat. Secure the dissolution chamber assembly with four binder clips evenly spaced around the washers, folding the clips away from the screens. Add 1,500 ml of R to a beaker. OFill with water, e.g., demineralized water, at room temperature (22°C + / - 2°C) or 5°C + / - 2°C. Set the timer for the desired immersion time of 10 minutes. Place the dissolution chamber assembly into the beaker, immediately start the timer, and plunge the dissolution chamber assembly into the water at an approximately 45-degree angle. This angle encourages the removal of air bubbles from the chamber. The dissolution chamber assembly is placed on the bottom of the beaker so that the specimen film is positioned horizontally approximately 10 mm from the bottom. The four folded binder clips on the dissolution chamber assembly are suitable for maintaining a film clearance of approximately 10 mm from the bottom of the beaker, although any other equivalent support means can be used. At the end of the 10 minutes, slowly remove the dissolution chamber assembly from the beaker at an approximately 45-degree angle. Hold the dissolution chamber assembly horizontally over an aluminum pan to capture any dripping liquid from the screen, and carefully remove the binder clips, washer, and gasket. Do not open the sandwiched screen. The sandwiched screen (i.e., screen / remaining undissolved film / screen) is placed on an aluminum pan and placed in an oven to dry at 100°C for 30 minutes. The dried sandwiched screen set, including any undissolved film remaining therein, is weighed. To this dry screen weight, any dried film drips that were captured in the pan when the dissolution chamber assembly was initially removed from the beaker and during drying are measured and added, and recovered from the pan (e.g., by scraping). The final sandwiched screen weight is recorded (Sf as the total including the dried film drips). The % residue left ("DC Residue") for the film specimen is calculated. DC residual=100×((S f -S o ) / F0)

[0071] The sandwiched screen is cleaned by soaking it in a beaker of reverse osmosis (RO) water for approximately 20 minutes, then the screen is removed and given a final rinse in an ultrasonic generator (turned on and filled with RO water) for at least 5 minutes, or until no residue is visible on the screen.

[0072] Gel coefficient (G) method The gel index method measures the strength of the gel formed between the encapsulated detergent composition and the polyvinyl alcohol contained in a water-soluble film upon initial dissolution in wash water. This method is designed to provide laboratory characterization (using very low water volumes) of infrequent or extreme household processes in which gelation may occur. It is used as a proxy to assess when detergent is released into the wash water. If residues are created during the laundry process, they can be redissolved, which may mean additional steps, and the objective of this invention is to reduce the contact required by the user during the laundry process.

[0073] The gel modulus is measured using a plate-to-plate rotational rheometer (TA Discovery Hybrid Rheometer) using a 60 mm flat spindle. The temperature of the bottom plate is set to 5°C. An aluminum cross-base frame (each crossbar is 6 mm wide) is placed on the bottom plate to divide the bottom plate into four equal quadrants. At room temperature, e.g., 20°C + / - 2°C, 1 ml of detergent composition is added to each of two opposing quadrants, creating a substantially triangular shape along each crossbar of the frame, as shown in Figure 2. 1 ml of a 10 wt% solution of the water-soluble film dissolved in demineralized water at room temperature, e.g., 20°C + / - 2°C, is administered to the remaining two opposing quadrants.

[0074] Therefore, the cross-base frame is removed so that the four liquids remain separated. The rotation spindle is then lowered to a measurement condition where the liquids are slightly released from the entire circumference of the spindle. The resulting measurement procedure involves a 30-second temperature adjustment, a 180-second peak hold at 40 rad / s, and a gradual oscillation angular frequency logarithmic sweep (100 to 0.016 rad / s within approximately 38 minutes through a logarithmic sweep at a constant and controlled stress of 0.1 Pa to ensure that the gel is always in the linear viscoelastic regime). The storage modulus (G') and loss modulus (G") are measured at five points per decade, resulting in a total of 20 data points. The average storage modulus (in Pa) and average loss modulus (in Pa) are calculated from the respective values ​​at 0.040, 0.025, and 0.015 rad / s, e.g., the last three data points measured. As a result, the gel modulus is calculated by dividing the average storage modulus by the average loss modulus value, which is a dimensionless value. Three measurements are made and the average is taken as the gel modulus.

[0075] Melting flame method Determine the cold water solubility profiles of different polyvinyl alcohol-based water-soluble films according to the MSTM2O5 disintegration / dissolution protocol carried out in demineralized water at 10 °C.

[0076] Pouch strength method This test method describes the practice for determining pouch strength using a Mark-10 testing instrument, ESM750SLCE (jjbos bv, Marconistraat 1, NL-2809 PH Gouda, The Netherlands), equipped with a load cell up to 100 kN (kilo Newton). Under the action of an external compressive force, the pouch deforms, causing stress to accumulate in both the film and the seal area. The internal pressure of the pouch depends on the externally applied force across the pouch surface area. Pouch strength (Newton) is defined as the maximum compressive force required by two parallel plates to increase the pouch's internal pressure to the point of rupture. Pouches that rupture at the seal area are reported as "seal failure" and are not considered when determining pouch strength. The average value of 18 replicates is reported.

[0077] The water-soluble pouches are stored at ambient conditions for 7 days and then preconditioned at 23°C / 50% RH for 16-24 hours before measuring pouch strength. The method is performed in an indoor environment of 40-50% relative humidity (RH) and 22-24°C. The water-soluble pouches are tested within 1 hour of removal from preconditioning.

[0078] Figure 2 shows a schematic diagram of the basic setup for pouch strength testing. To measure pouch strength, a pouch 510 is enclosed in a resulting sealed plastic bag 500 (150 mm x 124 mm, 60 micron thick, with closure, e.g., Raja Grip RGP6B) to prevent contamination of the work environment in the event of pouch rupture. The pouch 510 is centered within the bag and positioned between two compression plates 520, 530 of the instrument. The pouch 510 is placed in a flat position so that its width seal dimension 540 (e.g., the smallest dimension within a defined rectangular plane that just contains the seal area; for the actual pouch tested, this is 41 mm) lies horizontally between the compression plates (x direction), with the bottom section contacting one plate and at least one overlapping section contacting the other compression plate. The diameter of the compression plates must be large enough (here, D = 116 mm) to avoid pinching the pouch as it deforms. Compression is performed by setting the rate of decrease in the spacing between plates 520 and 530 at 225 mm / min. Eighteen replicates are performed for each test leg, and the average pouch strength data across these 18 replicates is reported.

[0079] Additional Film Ingredients The first, second, and / or third water-soluble films may contain a surfactant in the range of 0.1% to 3.5%, or 0.1% to 2.5%, or 1% to 2%, or 0.5% to 2% by weight of the water-soluble film. Suitable surfactants may include nonionic, cationic, anionic, and zwitterionic classes. Suitable surfactants include, but are not limited to, nonionic surfactants, including, but not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols, and alkanolamides; cationic surfactants, including, but not limited to, polyoxyethylenated amines, quaternary ammonium salts, and quaternized polyoxyethylenated amines; and zwitterionic surfactants, including, but not limited to, amine oxides, N-alkyl betaines, and sulfobetaines. For example, the nonionic surfactant can be selected from alcohol ethoxylates, the cationic surfactant can be selected from quaternary ammonium salts, and the zwitterionic surfactant can be selected from amine oxides. Other suitable surfactants include dioctyl sodium sulfosuccinate, lactylated fatty acid esters of glycerol and propylene glycol, lactylic 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, and combinations thereof.

[0080] The first, second and / or third water-soluble films have a residual moisture content, as measured by Karl Fischer titration, of at least 4%, more preferably in the range of 4% to 15%, and even more preferably 5% to 10% by weight of the first water-soluble film.

[0081] The first, second and / or third water-soluble films may comprise one or more ingredients selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, spreading agents, crosslinking agents, anti-blocking agents, antioxidants, detackifying agents, anti-foaming agents, nanoparticles, bleaching agents, aversive agents, surfactants, and combinations thereof.

[0082] The first, second, and / or third water-soluble films may contain one or more plasticizers in an amount ranging from 5% to 50% by weight of the water-soluble film, preferably from 10% to 40% by weight, and most preferably from 20% to 30% by weight. Preferably, the plasticizer in the water-soluble film is selected from a polyol, a sugar alcohol, or a mixture thereof. Preferably, the polyol is selected from the group consisting of glycerol, diglycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycols of 400 MW or less, neopentyl glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, and polyether polyols, or a mixture thereof. The sugar alcohol is selected from the group consisting of isomalt, maltitol, sorbitol, xylitol, erythritol, adonitol, dulcitol, pentaerythritol, and mannitol, or a mixture thereof. Most preferably, the plasticizer is selected from the group consisting of sorbitol, glycerol, dipropylene glycol, and mixtures thereof.

[0083] Preferably, the first, second, and / or third water-soluble films contain a lubricant / release agent. Suitable lubricants / release agents include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty acid esters, fatty amines, fatty amine acetates, and fatty acid amides. Preferred lubricants / release agents are fatty acids, fatty acid salts, and fatty amine acetates. The amount of lubricant / release agent in the first water-soluble film is in the range of 0.02% to 1.5% by weight, preferably 0.1% to 1% by weight, of the first water-soluble film.

[0084] Preferably, the first, second, and / or third water-soluble films contain a filler, a spreading agent, an anti-blocking agent, a detackifying agent, or a mixture thereof. Suitable fillers, spreading agents, anti-blocking agents, detackifying agents, or mixtures thereof include, but are not limited to, starch, modified starch, cross-linked polyvinylpyrrolidone, cross-linked cellulose, microcrystalline cellulose, silica, metal oxides, calcium carbonate, talc, and mica. Preferred materials are starch, modified starch, and silica. Preferably, the amount of filler, spreading agent, anti-blocking agent, detackifying agent, or mixtures thereof in the first water-soluble film is in the range of 0.1% to 25% by weight of the water-soluble film, preferably 1% to 10% by weight, more preferably 2% to 8% by weight, and most preferably 3% to 5% by weight. In the absence of starch, one preferred range of suitable fillers, spreading agents, anti-blocking agents, de-tackifying agents, or mixtures thereof is 0.1% to 1%, preferably 4%, more preferably 6%, even more preferably 1% to 4%, and most preferably 1% to 2.5% by weight of the water-soluble film.

[0085] The first, second and / or third water-soluble films may include a printed area. The printed area can be obtained using standard techniques such as flexographic printing or inkjet printing. The printed area may face the internal compartment of the unit dose article, or may face the external environment, or both; preferably, the printed area faces the internal compartment of the unit dose article. Preferred inks used to print the articles of the present invention include red, white, and black pigments, for example, red: Pigment Red 254, white: titanium dioxide, and black: lamp black or carbon black (Pigment Black 6).

[0086] The first, second, and / or third water-soluble films may include an aversive agent, such as a bittering agent. Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof. Any suitable concentration of the aversive agent may be used in the films. Suitable concentrations include, but are not limited to, 1 to 5000 ppm, or even 100 to 2500 ppm, or even 250 to 2000 ppm.

[0087] Method for producing water-soluble film The water-soluble film used in the water-soluble unit dose article of the film of the present disclosure can be manufactured by any suitable method.Processes for manufacturing water-soluble films include solvent casting, blow molding, extrusion, and blow extrusion, as are generally known in the art.The process for solvent casting is well known in the art.For example, in a film molding process, a resin and a secondary additive are dissolved in a solvent, typically water, that is applied to a surface, and then substantially dried (or forced dried) to form a cast film, and then the resulting cast film is removed from the casting surface.This process can be carried out batchwise, but is more efficiently carried out in a continuous process.

[0088] In forming continuous films, it is conventional to dispense a solution of resin and secondary components onto a moving casting surface, such as a continuously moving metal drum or belt, allow the solvent to substantially remove from the liquid, thereby forming a self-supporting cast film, and then peel the resulting cast film from the casting surface. The solution can optionally be metered or coated onto a carrier film, release liner, or releasable backing, so that after solvent removal, the resulting cast film or coating can be separated from the carrier film, release liner, or releasable backing (e.g., immediately after drying or at a later time, e.g., before use), or can remain attached to the carrier film, release liner, or releasable backing. Films or coatings prepared on carrier films, release liner, or releasable backings can be self-supporting or non-self-supporting.

[0089] Generally, the amount of water in a weighed solution of polyvinyl alcohol, additional resin, and / or secondary components for film casting is selected so that the solution has the highest solids level below the viscosity inflection point when heated to the casting temperature. Methods for determining the amount of solids at the viscosity inflection point are known in the art. Generally, the water content of the weighed solution contains 60-85% water, or 60-75% water, to provide a solution suitable for casting with typical casting solutions. The viscosity of the casting solution can be, for example, at least about 20,000 cps at 185°F (85°C), at least 30,000 cps at 185°F (85°C), for example, about 40,000 cps to about 50,000 cps at 185°F (85°C).

[0090] The solution can be cast at any suitable temperature such that the film has a temperature during drying, for example, in the range of about 50°C to about 105°C. While not intending to be bound by theory, it is believed that casting solution and film temperatures below about 50°C unnecessarily increase the time required to dry the film and unnecessarily increase the length of the drying chamber required to completely dry the casting solution. Furthermore, while not intending to be bound by theory, it is believed that solution and film temperatures above about 105°C may cause the solvent to rapidly boil out of the film, potentially resulting in film surface defects, such as pores or blisters, in the finished film and / or promoting unwanted reactions between adjacent PVOH backbones, resulting in a film with reduced solubility.

[0091] In a continuous or semi-continuous casting process, the moving casting surface can have a line speed ranging from about 5 m / min to about 50 m / min. Line speed can affect the resulting film properties, such as physical properties, thickness, residual moisture content, and film quality. Generally, assuming the solution feed rate remains constant, decreasing line speed results in a thicker resulting film, while increasing line speed results in a thinner resulting film. Generally, increasing line speed decreases the residence time of the film in the dryer, thereby necessitating higher drying temperatures, which can result in defects or sticking due to drying at sufficiently high temperatures. Conversely, decreasing line speed increases the residence time of the film in the dryer.

[0092] Any of the first, second, third, or additional films according to the present disclosure can be produced by solvent casting, for example, using a solvent band casting system. The system can include a tank for mixing and / or storing a polymer solution with any secondary additives for use in a band casting machine having at least first and second rotating drums, with a continuous band (e.g., a metal band) wrapped around the drum so that it moves with the drum's rotation. The polymer solution from the tank can be applied to the metal band through a sheet extrusion die, and a drying chamber surrounding at least a portion of the metal band downstream of the sheet extrusion die is used to remove solvent from the polymer solution as it moves in a thin sheet over the metal band. In addition, a release coating can be used to provide one or more benefits to the film and / or process. For example, a release coating can substantially reduce or eliminate air bubbles in the produced polymer film, or a release coating can improve the ease of release of the produced film from the casting surface. A roll coater release coating applicator in communication with a release coating source and a portion of the band can transfer a fluid release coating to the casting surface prior to application of the polymer solution to the band. Suitable solvent band casting systems and related materials are further described in US Patent Application Publication No. 2006 / 0081176 A1, the disclosure of which is incorporated herein by reference in its entirety.

[0093] Generally, the casting surface may be any suitable substrate for producing polymer films known to those skilled in the art. In embodiments, the substrate may be a casting roller or drum, a casting belt, or a combination thereof. As used herein, a substrate is used to produce a polymer film from a polymer resin or a polymer resin solution. The substrate comprises a substrate surface, which is coated with a release coating. The polymer resin solution can be cast onto the substrate while the substrate is moving, e.g., rotating. In embodiments, the substrate is a casting drum. In embodiments, the substrate is a casting belt. The substrate may comprise stainless steel, and may optionally have a stainless steel surface. The substrate may comprise stainless steel, which is optionally plated, for example, chrome-plated, nickel-plated, zinc-plated, or a combination thereof.

[0094] In general, the release coating may include one or more surfactants and an optional carrier (eg, water).

[0095] A release coating can be applied to the surface of the substrate prior to casting the polymeric resin or polymeric resin solution onto the surface-coated substrate, and optionally thereafter dried. In embodiments, the release coating can have a pH of from about 1 to about 5 when applied to the surface of the substrate prior to drying the release coating on the surface of the substrate.

[0096] Generally, the release coating can have a surfactant concentration ranging from about 0.001% to about 100% by weight, based on the total weight of the release coating. In embodiments, the release coating can have a surfactant concentration ranging from about 0.001% to about 20% by weight, prior to drying the release coating on the surface of the substrate. For example, the release coating can have a surfactant concentration ranging from about 0.001% to about 10% by weight, or from about 0.01% to about 5% by weight, or from about 0.01% to about 4% by weight, or from about 0.01% to about 3% by weight, or from about 0.01% to about 2% by weight, or from about 0.05% to about 2% by weight, or from about 0.1% to about 2% by weight, or from about 0.5% to about 2% by weight, prior to drying the release coating on the surface of the substrate. In embodiments, the release coating can have a surfactant concentration in the range of about 0.01% to about 4.00% by weight, based on the total weight of the release coating before drying the release coating on the surface of the substrate. In embodiments, the release coating can have a surfactant concentration in the range of about 0.05% to about 2.00% by weight, based on the total weight of the release coating before drying the release coating on the surface of the substrate. In embodiments, the release coating can have a surfactant concentration in the range of about 2.5% to about 100% by weight, based on the total weight of the release coating after drying the release coating on the surface of the substrate. For example, after drying the release coating on the surface of the substrate, the release coating can have a surfactant concentration in the range of about 3% to about 100% by weight, or about 4% to about 90% by weight, or about 4% to about 80% by weight, or about 4% to about 70% by weight, or about 4% to about 50% by weight, or about 4% to about 30% by weight, or about 4% to about 20% by weight, or about 4.7% to about 100% by weight, or about 5% to about 90% by weight, based on the total weight of the release coating. In embodiments, the release coating can have a surfactant concentration in the range of about 4.7% to about 100% by weight, based on the total weight of the release coating, after drying the release coating on the surface of the substrate.For example, the release coating may include a ZONYL surfactant in an amount ranging from about 0.05% to about 5.0% by weight based on the total weight of the release coating.

[0097] Generally, the release coatings described herein can have a hydrophilic-lipophilic balance ranging from about 1 to about 30. In embodiments, the release coatings can have a hydrophilic-lipophilic balance ranging from about 1 to about 20, or from about 1 to about 18, or from about 1 to about 17, or from about 1 to about 16, or from about 1 to about 15, or from about 2 to about 17, or from about 3 to about 17, or from about 4 to about 15, or from about 5 to about 12, or from about 8 to about 12. In embodiments, the release coatings can have a hydrophilic-lipophilic balance ranging from about 1 to about 20. In embodiments, the release coatings can have a hydrophilic-lipophilic balance ranging from about 3 to about 17.

[0098] Typically, the release coating has a thickness of from about 0.1 nm to about 100 nm on the surface of the substrate. In embodiments, the release coating can have a thickness of from about 0.1 nm to about 80 nm, or from about 0.1 nm to about 60 nm, or from about 0.1 nm to about 40 nm, or from about 0.1 nm to about 40 nm, or from about 0.1 nm to about 20 nm, or from about 0.1 nm to about 10 nm, or from about 1 nm to about 10 nm, or from about 1 nm to about 5 nm on the surface of the substrate. In embodiments, the release coating has a thickness of from about 0.1 nm to about 40 nm on the surface of the substrate. In embodiments, the release coating has a thickness of from about 0.1 nm to about 10 nm on the surface of the substrate.

[0099] Laundry or automatic dishwashing detergent compositions The water-soluble unit dose detergent article comprises a fabric care or household care detergent composition, preferably a laundry or automatic dishwashing detergent composition, more preferably a laundry detergent composition.

[0100] The laundry detergent composition is preferably a liquid laundry detergent composition.

[0101] The term "liquid laundry detergent composition" refers to any laundry detergent composition comprising a liquid capable of wetting and treating fabrics, including, but not limited to, liquids, gels, pastes, dispersions, etc. A liquid composition may include solids or gases in any suitable finely divided form, but liquid compositions exclude generally non-flowable forms such as tablets or granules.

[0102] The liquid detergent compositions may be used in hand fabric washing operations or in automatic fabric machine washing operations, preferably in automatic fabric machine washing operations.

[0103] Preferably, the liquid laundry detergent composition comprises from 5% to 60%, preferably from 15% to 55%, by weight of the laundry detergent composition of non-soap anionic surfactant. Preferably, the detergent composition comprises from 20% to 55%, more preferably from 25% to 50%, of non-soap anionic surfactant.

[0104] Preferably, the non-soap anionic surfactant comprises a linear alkyl benzene sulfonate. Preferably, the linear alkyl benzene sulfonate is C 10 ~C 16 Alkylbenzene sulfonate, C 11 ~C 14 The liquid laundry detergent composition preferably comprises a linear alkylbenzene sulfonate, an alkylbenzene sulfonate salt, or a mixture thereof. Preferably, the alkylbenzene sulfonate is an amine-neutralized alkylbenzene sulfonate, an alkali metal-neutralized alkylbenzene sulfonate, or a mixture thereof. The amine is preferably selected from monoethanolamine, triethanolamine, or a mixture thereof. The alkali metal is preferably selected from sodium, potassium, magnesium, or a mixture thereof. Preferably, the liquid laundry detergent composition comprises 1% to 40% by weight of the liquid laundry detergent composition of linear alkylbenzene sulfonate, preferably 3% to 40% by weight, more preferably 6% to 35% by weight.

[0105] Preferably, the non-soap anionic surfactant comprises an alkyl sulfate anionic surfactant, and the alkyl sulfate anionic surfactant is selected from alkyl sulfate, alkoxylated alkyl sulfate, or a mixture thereof. The alkyl sulfate anionic surfactant can be a primary or secondary alkyl sulfate anionic surfactant, or a mixture thereof, preferably a primary alkyl sulfate anionic surfactant. Preferably, the alkoxylated alkyl sulfate comprises an ethoxylated alkyl sulfate, a propoxylated alkyl sulfate, a mixed ethoxylated / propoxylated alkyl sulfate, or a mixture thereof, more preferably an ethoxylated alkyl sulfate. Preferably, the ethoxylated alkyl sulfate has an average degree of ethoxylation of 0.1 to 5, preferably 0.5 to 3. Preferably, the ethoxylated alkyl sulfate has an average alkyl chain length of 8 to 18, more preferably 10 to 16, and most preferably 12 to 15. Preferably, the alkyl chain of the alkyl sulfate anionic surfactant is linear, branched, or a mixture thereof. Preferably, the branched alkyl sulfate anionic surfactant is a branched primary alkyl sulfate, a branched secondary alkyl sulfate, or a mixture thereof, preferably a branched primary alkyl sulfate, with the branch preferably at the 2-position, alternatively further down the alkyl chain, or multi-branched, with branches extending along the alkyl chain. The weight-average branching degree of the alkyl sulfate anionic surfactant may be 0% to 100%, preferably 0% to 95%, more preferably 0% to 60%, and most preferably 0% to 20%. Alternatively, the weight-average branching degree of the alkyl sulfate anionic surfactant may be 70% to 100%, preferably 80% to 90%. Preferably, the alkyl chain is selected from naturally derived materials, synthetically derived materials, or a mixture thereof. Preferably, the synthetically derived material comprises an oxo synthetic material, a Ziegler synthetic material, a Guerbet synthetic material, a Fischer-Tropsch synthetic material, an iso-alkyl synthetic material, or mixtures thereof, preferably an oxo synthetic material.Preferably the liquid laundry detergent composition comprises from 1% to 35%, preferably from 3% to 30%, more preferably from 6% to 20% alkyl sulphate anionic surfactant by weight of the liquid laundry detergent composition.

[0106] Preferably, the non-soap anionic surfactant comprises a linear alkyl benzene sulfonate and an alkoxylated alkyl sulfate, more preferably the weight ratio of linear alkyl benzene sulfonate to alkoxylated alkyl sulfate is from 1:2 to 9:1, preferably from 1:1 to 7:1, more preferably from 1:1 to 5:1, and most preferably from 1:1 to 4:1.

[0107] The liquid laundry detergent composition comprises from 2.5% to 30%, preferably from 4% to 25%, more preferably from 8% to 20%, by weight of the liquid laundry detergent composition of a nonionic surfactant, preferably the nonionic surfactant comprises an alkoxylated alcohol. Nonionic surfactants are described in more detail below.

[0108] Preferably, the weight ratio of non-soap anionic surfactant to nonionic surfactant is from 1:1 to 13:1, preferably from 1.25:1 to 10:1, more preferably from 1.5:1 to 7.5:1.

[0109] Preferably, the nonionic surfactant comprises an alkoxylated alcohol, and the alkoxylated alcohol is derived from a synthetic alcohol, a natural alcohol, or a mixture thereof. The alkoxylated alcohol can be a primary alkoxylated alcohol, a secondary alkoxylated alcohol, or a mixture thereof, preferably a primary alkoxylated alcohol. Preferably, the alkoxylated alcohol comprises an ethoxylated alcohol, a propoxylated alcohol, a mixed ethoxylated / propoxylated alcohol, or a mixture thereof, more preferably an ethoxylated alcohol. Alternatively, the alkoxylated alcohol can also contain a higher alkoxy group, such as a butoxy group. In the case of a mixed alkoxy group, the alkoxy groups can be arranged randomly or in blocks, preferably in blocks. For example, a mixed ethoxy (EO) / propoxy (PO) group can be arranged in an EO / PO block, a PO / EO block, an EO / PO / EO block, or a PO / EO / PO block. Preferably, the ethoxylated alcohol has an average degree of ethoxylation of 0.1 to 20, preferably 5 to 15, and most preferably 6 to 10. When propoxylation is present, preferably the average degree of propoxylation is 0.1 to 25, more preferably 2 to 20, and most preferably 5 to 10. Preferably, the alkoxylated, preferably ethoxylated, alcohol has an average alkyl chain length of 8 to 18, more preferably 10 to 16, and most preferably 12 to 16. Preferably, the alkyl chain of the alkoxylated alcohol is linear, branched, or a mixture thereof, and the branched alkoxylated alcohol is a branched primary alkoxylated alcohol, a branched secondary alkoxylated alcohol, or a mixture thereof, preferably a branched primary alkoxylated alcohol. Preferably, the weight average branching degree of the alkoxylated alcohol is 0% to 100%, preferably 0% to 95%, more preferably 0% to 60%, and most preferably 0% to 40%. The branches may be at the 2-alkyl position, or alternatively further down the alkyl chain, or may be multi-branched with individual branches extending up the alkyl chain.Preferably, the synthetically derived material comprises an oxo-synthetic material, a Ziegler-synthetic material, a Guerbet-synthetic material, a Fischer-Tropsch-synthetic material, an iso-alkyl branched material, or a mixture thereof, preferably an oxo-synthetic material. Preferably, the nonionic surfactant comprises an alkoxylated alcohol. Without wishing to be bound by theory, nonionic surfactants, particularly alkoxylated alcohol nonionic surfactants, provide superior body soil cleaning and soil suspension benefits.

[0110] Preferably, the liquid laundry detergent composition comprises a fatty acid, preferably a neutralized fatty acid soap, preferably a fatty acid salt, more preferably an amine-neutralized fatty acid salt, preferably the amine is an alkanolamine, more preferably selected from monoethanolamine, diethanolamine, triethanolamine, or mixtures thereof, more preferably monoethanolamine. The liquid detergent composition may comprise from 1.5% to 20%, from 2% to 15%, from 3% to 12%, or from 4% to 10% fatty acid, by weight of the liquid detergent composition.

[0111] Preferably, the liquid laundry detergent composition comprises from 1% to 20%, preferably from 5% to 15% water by weight of the liquid laundry detergent composition.

[0112] Preferably, the liquid laundry detergent composition comprises from 10% to 40%, preferably from 15% to 30% by weight of the liquid laundry detergent composition of a non-aqueous solvent, preferably the non-aqueous solvent is selected from 1,2-propanediol, dipropylene glycol, tripropylene glycol, glycerol, sorbitol, polyethylene glycol, or mixtures thereof.

[0113] Preferably, the liquid laundry detergent composition comprises adjunct ingredients selected from the group comprising builders, perfumes, enzymes, citrates, bleaches, bleach catalysts, dyes, hueing dyes, brighteners, cleaning polymers including alkoxylated polyamines and polyethyleneimines, soil release polymers, fabric care polymers including cationic hydroxyethyl cellulose and cationic polyglucans, surfactants, solvents, dye transfer inhibitors, chelating agents, encapsulated perfumes, polycarboxylates, structurants, pH adjusters, antioxidants including Ralox 35, and mixtures thereof.

[0114] Preferably, the laundry detergent composition comprises an enzyme selected from the group comprising hemicellulase, peroxidase, protease (including metalloprotease), cellulase, xylanase, lipase, phospholipase, esterase, cutinase, pectinase, keratanase, reductase, oxidase, phenoloxidase, lipoxygenase, ligninase, pullulanase, tannase, pentosanase, malanase, β-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase, xyloglucanase, mannanase and amylase, nuclease, or mixtures thereof, preferably an enzyme selected from the group comprising protease (including metalloprotease), amylase, cellulase, lipase, xyloglucanase, mannanase, nuclease, and mixtures thereof.

[0115] Preferably, the liquid laundry detergent composition has a pH of from 6 to 10, more preferably from 6.5 to 8.9, most preferably from 7 to 8, the pH of the laundry detergent composition being measured as a 10% product concentration in deionized water at 20°C.

[0116] The liquid laundry detergent composition may be Newtonian or non-Newtonian. Preferably, the liquid laundry detergent composition is non-Newtonian. Without wishing to be bound by theory, non-Newtonian liquids have different properties from Newtonian liquids. More specifically, the viscosity of non-Newtonian liquids depends on shear rate, while Newtonian liquids have a constant viscosity regardless of the applied shear rate. It is believed that the decrease in viscosity of non-Newtonian liquids upon application of shear further promotes dissolution of the liquid detergent. The liquid laundry detergent compositions described herein may have any suitable viscosity depending on factors such as the formulated ingredients and the purpose of the composition.

[0117] The composition may preferably be an automatic dishwashing detergent composition comprising ingredients selected from surfactants, builders, sulfonated / carboxylated polymers, silicone suds suppressors, silicates, metal and / or glass care agents, enzymes, bleaching agents, bleach activators, bleach catalysts, alkalinity sources, fragrances, dyes, solvents, fillers, and mixtures thereof.

[0118] Preferred surfactants for use in automatic dishwashing detergents are low sudsing, either by themselves or in combination with other ingredients (e.g., suds suppressors). Preferred for use herein are low and high cloud point nonionic surfactants, and mixtures thereof, including nonionic alkoxylated surfactants (especially ethoxylates derived from C6 to C18 primary alcohols), ethoxylated-propoxylated alcohols (e.g., POLY-TERGENT® SLF18 from Olin Corporation), epoxy end-capped poly(oxyalkylated) alcohols (e.g., POLY-TERGENT® SLF18B from Olin Corporation, ether end-capped poly(oxyalkylated) alcohol surfactants, and PLURONIC®, REVERSED POLY(OXY)ALCOHOLIC SULFATES from BASF-Wyandotte Corp. (Wyandotte, Michigan). These surfactants include block polyoxyethylene-polyoxypropylene polymer compounds such as the PLURONIC® and TETRONIC® series, amphoteric surfactants such as C12-C20 alkyl amine oxides (preferred amine oxides for use herein include lauryl dimethyl amine oxide and hexadecyl dimethyl amine oxide), and alkyl amphocarboxylic acid surfactants such as MIRANOL™ C2M, zwitterionic surfactants such as betaines and sultaines, and mixtures thereof. The surfactants may be present at a concentration of from 0.2% to 30%, more preferably from 0.5% to 10%, and most preferably from 1% to 5% by weight of the detergent composition.

[0119] Suitable builders for use in the detergent compositions described herein include water-soluble builders such as citrates, carbonates, silicates, and polyphosphates, e.g., sodium tripolyphosphate and sodium tripolyphosphate hexahydrate, potassium tripolyphosphate, and mixed salts of sodium and potassium tripolyphosphate.

[0120] Suitable enzymes for use in the detergent compositions described herein include bacterial and fungal cellulases, including CAREZYME® and CELLUZYME® (Novo Nordisk A / S); peroxidases; lipases, including AMANO-P® (Amano Pharmaceutical Co.), M1 LIPASE® and LIPOMAX® (Gist-Brocades), and LIPOLASE® and LIPOLASE ULTRA® (Novo); cutinases; proteases, including ESPERASE®, ALCALASE®, DURAZYM®, and SAVINASE® (Novo), and MAXATASE®, MAXACAL®, PROPERASE®, and MAXAPEM® (Gist-Brocades); PURAFECT® OX Enzymes include alpha and beta amylases, including AM (Genencor), TERMAMYL®, BAN®, FUNGAMYL®, DURAMYL®, and NATALASE® (Novo); pectinases; and mixtures thereof. Enzymes herein may be added as prills, granules, or cogranulates, typically at concentrations ranging from 0.0001% to 2% of pure enzyme by weight of the cleaning composition.

[0121] Suitable suds suppressors for use in the detergent compositions described herein include nonionic surfactants with low cloud points. As used herein, "cloud point" is a well-known property of nonionic surfactants that results in a decrease in surfactant solubility as the temperature increases, and the temperature at which the appearance of a second phase can be observed is referred to as the "cloud point." As used herein, a "low cloud point" nonionic surfactant is defined as a nonionic surfactant system component having a cloud point of less than 30°C, preferably less than about 20°C, even more preferably less than about 10°C, and most preferably less than about 7.5°C. Low cloud point nonionic surfactants can include nonionic alkoxylated surfactants, particularly ethoxylates derived from primary alcohols, and polyoxypropylene / polyoxyethylene / polyoxypropylene (PO / EO / PO) reverse block polymers. Also, examples of such low cloud point nonionic surfactants include ethoxylated-propoxylated alcohols (e.g., BASF's POLY-TERGENT® SLF18) and epoxy-terminated poly(oxyalkylated) alcohols (e.g., the nonionic BASF POLY-TERGENT® SLF18B series).

[0122] Other suitable components for use in the detergent compositions described herein include cleaning polymers with anti-redeposition, soil-release, or other detergent properties. Anti-redeposition polymers for use herein include acrylic acid-containing polymers such as SOKALAN® PA30, PA20, PA15, PA10, and acrylic acid / maleic acid copolymers, such as SOKALAN® CP10 (BASF GmbH), ACUSOL® 45N, 480N, 460N (Rohm and Haas), and SOKALAN® CP5, and acrylic / methacrylic acid copolymers. Other suitable polymers include amine-based polymers such as alkoxylated polyalkyleneimines (e.g., PEI600 EO20 and / or ethoxysulfated hexamethylenediamine dimethyl quaternary ammonium compounds), which may be optionally quaternized. Preferred soil release polymers for use herein include nonionic and anionic polymers based on alkyl and hydroxyalkyl celluloses, polyoxyethylene, polyoxypropylene and copolymers thereof, and terephthalate esters of ethylene glycol, propylene glycol and mixtures thereof.

[0123] Heavy metal ion sequestrants and crystal growth inhibitors, such as diethylenetriaminepenta(methylenephosphonate), ethylenediaminetetra(methylenephosphonate), hexamethylenediaminetetra(methylenephosphonate), ethylenediphosphonate, hydroxy-ethylene-1,1-diphosphonate, nitrilotriacetate, ethylenediaminotetraacetate, ethylenediamine-N,N'-disuccinate, in salt and free acid form, are also suitable for use in detergents.

[0124] Also suitable for use in the detergent compositions described herein are corrosion inhibitors such as, for example, organic silver coatings (especially paraffins such as WINOG® 70 sold by Wintershall, Salzbergen, Germany), nitrogen-containing corrosion inhibitor compounds (e.g., benzotriazoles and benzimidazoles), and Mn(II) compounds, especially Mn(II) salts of organic ligands.

[0125] Other suitable ingredients for use in the detergent compositions herein include enzyme stabilizers such as, for example, calcium ions, boric acid, and propylene glycol.

[0126] Suitable rinse additives are known in the art.Typically, commercially available dishwashing rinse aids are a mixture of low-foaming aliphatic alcohol polyethylene / polypropylene glycol ether, solubilizer (e.g., cumene sulfonate), organic acid (e.g., citric acid) and solvent (e.g., ethanol).The function of such rinse aids is to affect the interfacial tension of water in such a way that they can be discharged from the rinsed surface in the form of a thin, coherent film, so that no water droplets, streaks, or films remain after the subsequent drying process.

[0127] Process for manufacturing multi-compartment water-soluble unit dose articles A further aspect of the present invention is a process for producing a multi-compartment water-soluble unit dose article according to the present invention, comprising: i) thermoforming and / or vacuum forming a water-soluble film to create a cavity; ii) filling the cavity with a detergent composition or a portion thereof; and iii) closing the cavity with a pre-formed compartment containing the detergent composition or a portion thereof to create a multi-compartment water-soluble unit dose detergent article.

[0128] Preferably, the process comprises: i) thermoforming and / or vacuum forming a film, which may be a first, second, or third film, to create a cavity; ii) filling the cavity with a detergent composition or a portion thereof; and iii) closing the cavity with a pre-formed compartment containing the detergent composition or a portion thereof and which may include a first, second or third film, or a combination thereof, to create an overlapping multi-compartment water-soluble unit dose detergent.

[0129] The films and / or preformed compartments can be sealed, for example, by solvent sealing. The water-soluble unit dose detergent article can be made from two or more first films, or a first film and one or more second films, or a first film, a second film and one or more third films, etc.

[0130] The process for producing the water-soluble unit dose articles may be an automated manufacturing process, such as a conveyor belt, a series of conveyor belts, a drum, a series of drums, or a combination thereof. Alternatively, the process for producing the water-soluble unit dose articles may be a manual manufacturing line in which one or more sequences or steps are performed manually. Most preferably, the process is an automated process.

[0131] Preferably, the process for producing the water-soluble unit dose articles is a continuous process. Alternatively, the process for producing the water-soluble unit dose articles may be an intermittent process or a batch process. Preferably, the process for producing the water-soluble unit dose articles is a continuous manufacturing process.

[0132] Preferably, the closed intermediate is produced on a rotating drum or a horizontal belt, preferably on a rotating drum. Preferably, the filled open cavities of steps a and b are produced on a horizontal belt or a rotating drum, preferably on a horizontal belt. When a rotating drum is used, the water-soluble film is preferably held in place by vacuum. When a horizontal belt is used, the water-soluble film is preferably held in place by vacuum.

[0133] Preferably, a plurality of unit dose articles are formed that are connected to each other by flat areas. Without wishing to be bound by theory, such a process involves manufacturing a plurality of water-soluble unit dose articles that are joined together by a non-deformable film to create a water-soluble web of unit dose articles. The non-deformable film is the flat area of ​​the water-soluble web between the unit dose articles. Thus, the flat area can include two or more water-soluble films sealed together.

[0134] The resulting web of water-soluble unit dose articles connected via flat regions is then transferred to a cutting station and cut to produce individual unit dose articles. Preferably, the cutting station cuts the web in the machine direction and cross-machine direction. Preferably, the cutting is done using a rotary knife. It may also be preferred that the cutting is done in a continuous manner, preferably at a constant line speed, preferably while in a horizontal position. The cutting device may be, for example, a sharp article, or a hot article, or a laser, whereby, in the latter case, the hot article or laser "burns through" the film / seal area. The cutting may be done by one or more rotary knives. Preferably, the cutting is done by one or more rotary knives, which cut in the machine direction, the cross-machine direction, or a combination thereof. Preferably, the rotary knives rotate at variable rotational speeds.

[0135] The solvent sealing solution can be applied by any suitable method, including contact and / or non-contact methods. For example, the solvent solution can be applied in a contact transfer process using a contact member comprising a non-absorbent or substantially impermeable material, such as an anilox roller, a rubber (e.g., EPDM) roller, or any combination thereof, optionally in combination with a doctor blade. The sealing solution can be applied using a drawdown bar, a Mayer bar, or a similar device. In another type of embodiment, the sealing solution can be applied using a contact member comprising an absorbent material, such as natural felt, synthetic felt, porous plastic, foam, sponge, microfiber, cotton, polyester, extruded polyester fiber, nonwoven web, etc., in the form of a pad or roller. Application of the solvent sealing solution by a felt roll is particularly contemplated. The solvent sealing solution can be applied by a felt roll, a spray nozzle, a discharge nozzle, or a combination thereof, preferably by a felt roll or a spray nozzle. Preferably, the solvent sealing solution comprises an aqueous solvent, a non-aqueous solvent, or a mixture thereof. Even more preferably, the solvent sealing solution comprises water. Preferably, the solvent sealing solution comprises at least 95%, or even at least 98%, or even at least 99%, or even 100% water by weight of the solvent sealing solution. Preferably, the solvent sealing solution is applied by a felt roll, a spray nozzle, a discharge nozzle, or a combination thereof, more preferably by a felt roll or a spray nozzle, alternatively by an atomizing nozzle. Preferably, the solvent sealing solution is applied to the second water-soluble film. Preferably, the solvent sealing solution is present on the water-soluble film at 1 g to 30 g of sealing solution per square meter, preferably 5 g to 20 g of sealing solution per square meter.

[0136] The water-soluble film may be preheated before deformation by a hot plate, an infrared lamp, or a combination thereof, preferably an infrared lamp.

[0137] The mold in which the article is produced may be of any shape, length, width, and depth depending on the required pouch dimensions. Molds may also vary in size and shape, if desired. For example, the volume of the final unit dose article may be about 5 ml to about 300 ml, about 10 ml to 150 ml, or about 10 ml to about 50 ml, with the mold dimensions adjusted accordingly. Preferably, the surface of the mold has a rough texture.

[0138] The resulting water-soluble unit dose article preferably has a strength of at least 200N, preferably at least 300N, more preferably at least 400N, when measured according to the test methods described herein.

[0139] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise indicated, 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." [Example]

[0140] The interactions between conventional soluble unit dose liquid laundry formulations and water-soluble films according to the present invention and water-soluble films outside the scope of the present invention upon initial dissolution in wash water have been studied using the Gel Factor test method described herein.

[0141] Table 1 illustrates a water-soluble unit dose detergent article according to the present invention. The liquid detergent composition contained in each compartment is prepared by mixing the individual detergent ingredients in a batch-type process.

[0142] Table 2 lists water-soluble films according to the present invention and water-soluble films outside the scope of the present invention. The comparative films are outside the scope of the present invention because they have too high an average degree of hydrolysis and are representative of films according to the prior art of WO2017218408.

[0143] Table 3 shows gel modulus data obtained using the test methods described herein for the combination of the lower compartment liquid detergent examples from Table 1 with the different film examples from Table 2. It can be seen that the combination of the liquid detergent composition with a water-soluble film according to the present invention results in a much lower gel modulus than related compositions having films outside the scope of the present invention.

[0144] [Table 1] * Ethoxylated polyethyleneimine with a polyethyleneimine backbone having an average degree of ethoxylation of 20 per EO chain and a MW of approximately 600 ** Lutensit Z96: A partially sulfated polyethoxylated hexamethylenediamine available from BASF *** Premix composition: Cationic hydroxyethyl cellulose 37% by weight, PPG 400 60% by weight, Acusol 880 3% by weight - Premix ingredients reflected in the composition of the formula above

[0145] [Table 2]

[0146] [Table 3]

Claims

1. 1. A multi-compartment water-soluble unit dose detergent article comprising a plurality of compartments in a generally overlapping relationship, said water-soluble unit dose detergent article comprising a water-soluble film enclosing a fabric care or household care detergent composition, said detergent composition comprising a detersive surfactant, said water-soluble film comprising a first film comprising a polyvinyl alcohol polymer blend, said polymer blend comprising: i) 1% to 50%, preferably 5% to 30%, more preferably 10% to 20% by weight of the polymer blend of Polymer A, wherein Polymer A comprises anionic monomer units, vinyl alcohol monomer units, and vinyl acetate monomer units; Polymer A is an average degree of hydrolysis of from 60% to less than 80%, preferably from 70% to less than 80%, more preferably from 75% to less than 80%, and Polymer A having a 4% solution viscosity at 20°C of 3 cP to 20 cP, preferably 3 cP to 15 cP, more preferably 3 cP to 10 cP; ii) 50% to 99%, preferably 70% to 95%, more preferably 80% to 90% by weight of Polymer B of the polymer blend, wherein Polymer B consists essentially of vinyl alcohol and vinyl acetate monomer units; Polymer B is an average degree of hydrolysis of from 60% to less than 80%, preferably from 70% to less than 80%, more preferably from 75% to less than 80%, and and Polymer B, having a 4% solution viscosity at 20° C. of 10 cP to 40 cP, preferably 10 cP to 30 cP, more preferably 10 cP to 20 cP.

2. 2. The article of claim 1, wherein the anionic monomer units comprise monomers derived from the group consisting of itaconic acid, monoalkyl itaconate, dialkyl itaconate, itaconic anhydride, and mixtures thereof, preferably itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, and mixtures thereof, more preferably itaconic acid.

3. the polymer blend i) 10% to 20% by weight of said polymer blend of Polymer A, wherein Polymer A comprises anionic monomer units derived from itaconic acid; Polymer A has an average degree of hydrolysis of 75% to less than 80%, and Polymer A having a 4% solution viscosity at 20°C of 3 cP to 10 cP; ii) 80% to 90% by weight of the polymer blend of Polymer B, Polymer B is an average degree of hydrolysis of 75% to less than 80%, and and Polymer B, which has a 4% solution viscosity at 20° C. of 10 cP to 20 cP.

4. 4. The article according to any one of claims 1 to 3, wherein polymer A comprises from 0.1 mol% to 4.0 mol%, preferably from 0.5 mol% to 3.0 mol%, more preferably from 1.0 mol% to 2.0 mol% of said anionic monomer units.

5. The article of any one of claims 1 to 4, wherein the polymer blend consists essentially of polymer A and polymer B.

6. 6. The article of any one of claims 1 to 5, wherein the difference in 4% solution viscosity at 20°C between polymer A and polymer B is from 1 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably from 5 cP to 12 cP.

7. 7. The article according to any one of claims 1 to 6, wherein the difference in the average degree of hydrolysis between polymer A and polymer B is at most 10%, preferably at most 5%, more preferably between 1% and 3%.

8. 8. The article of any one of claims 1 to 7, wherein the first film comprises from 50% to 90%, preferably from 55% to 85%, more preferably from 60% to 80% of the polymer blend by weight of the film.

9. The article of any one of claims 1 to 8, wherein the first film has a tensile strength (maximum stress at break) of at least 36 MPa, or at least 38 MPa, or at least 40 MPa up to 50 MPa.

10. 10. The article of any one of claims 1 to 9, wherein the first film has a retention value of 75 wt% or less, preferably 65 wt% or less, as measured by a dissolution chamber test at 5°C.

11. 11. The article of any one of claims 1 to 10, wherein the first film has a dissolution time of less than 120 seconds, or 70 seconds or less, or less than 60 seconds according to MSTM-205 at 5°C for a 76 micron thick film.

12. The article of any one of claims 1 to 11, wherein the first film has a biodegradation rate according to OECD 301B test of at least 60% after 60 days, or at least 60% after 28 days.

13. The article of any one of claims 1 to 12, wherein the polymer blend has a biodegradation rate according to OECD 301B test of at least 60% after 60 days, or at least 60% after 28 days.

14. an aqueous solution having the first film and the detergent composition dissolved therein having a gel coefficient of less than 1.25, preferably less than 1.2, more preferably less than 1.15; G = G' / G" During the ceremony, G' is the "storage" or "elastic" modulus; G″ is the “loss” or “plastic” modulus; The article of any one of claims 1 to 13, wherein the aqueous solution is prepared and G' and G" are measured as described herein.

15. 15. The article of any one of claims 1 to 14, wherein the water-soluble film comprises a second film, the second film comprising a polymer selected from the group consisting of polymer A, polymer B, polymer C, and mixtures thereof, wherein polymer C comprises polyvinyl alcohol and is different from polymer A, polymer B, and the polymer blend of the first film.

16. 16. The article of claim 15, wherein the first film and the second film are sealed to form a first enclosed compartment, the first enclosed compartment containing the fabric or household care detergent composition or a portion thereof.

17. Polymer C is i) a polymer consisting essentially of vinyl alcohol, vinyl acetate, and carboxylated monomer units; ii) a blend of polymers consisting essentially of vinyl alcohol and vinyl acetate monomer units; and iii) a polymer blend consisting essentially of a polymer consisting of vinyl alcohol monomer units and vinyl acetate monomer units, and a polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units.

18. 18. The article of any one of claims 15 to 17, wherein Polymer C comprises, preferably consists of, a polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units, wherein the carboxylated monomer units are selected from acrylates, methacrylates, maleates, or mixtures thereof, more preferably acrylates, and wherein the polymer has an average degree of hydrolysis of 80% to 99%, preferably 88% to 99%, a 4% solution viscosity at 20°C of 13 cP to 28 cP, preferably 18 cP to 26 cP, and an average degree of anionic substitution of 1% to 10%, preferably 1% to 4%.

19. Polymer C is i) from 1% to 70% by weight, preferably from 30% to 70% by weight of polymer C, of ​​a polymer consisting essentially of vinyl alcohol and vinyl acetate monomer units, said polymer having an average degree of hydrolysis of from 80% to 99.7%, preferably from 85% to 93%, more preferably from 87% to 89%, and a 4% solution viscosity at 20°C of from 14.5 cP to 25 cP, preferably from 17 cP to 24 cP; ii) 30% to 99% by weight of Polymer C, preferably 30% to 70% by weight, of a polymer consisting essentially of vinyl alcohol monomer units, vinyl acetate monomer units, and carboxylated monomer units, wherein the carboxylated monomer units are preferably derived from maleate monomer units, and salts thereof, esters thereof, or anhydrides thereof, most preferably monomethyl maleate monomer units, the polymer having an average degree of hydrolysis of 80% to 99.7%, preferably 85% to 95%, more preferably 88% to 92%, a 4% solution viscosity at 20°C of 4 cP to 40 cP, preferably 10 cP to 25 cP, more preferably 15 cP to 20 cP, and an average degree of anionic substitution of 1% to 10%, preferably 1% to 8%, more preferably 1% to 4%.

20. Polymer C is i) a first polymer consisting essentially of vinyl alcohol and vinyl acetate monomer units, said first polymer having an average degree of hydrolysis of from 80% to 92%, preferably from 84% to 92%, and a 4% solution viscosity at 20°C of from 8 cP to 40 cP, preferably from 10 cP to 20 cP, more preferably from 12 cP to 14 cP; ii) comprising, preferably consisting of, a second polymer consisting essentially of vinyl alcohol and vinyl acetate monomer units, said second polymer having an average degree of hydrolysis of from 80% to 92%, preferably from 84% to 92%, and a 4% solution viscosity at 20°C of from 1 cP to 20 cP, preferably from 3 cP to 15 cP, more preferably from 5 cP to 10 cP; 18. The article of any one of claims 15 to 17, wherein the first polymer and the second polymer are present in a weight ratio of from about 9:1 to about 1:9, preferably from about 6:4 to about 4:

6.

21. 21. The article of any one of claims 1 to 20, wherein the water-soluble film comprises a third film, the third film comprising a polymer selected from the group consisting of polymer A, polymer B, polymer C, and mixtures thereof, and the third film is different from the first and second films.

22. The article of any one of claims 1 to 21, wherein the article comprises compartments in a side-by-side configuration.

23. 23. The article of any one of claims 1 to 22, wherein the first film, the second film (if present), and the third film (if present) comprise additives selected from the group consisting of plasticizers, plasticizer compatibilizers, lubricants, release agents, fillers, spreading agents, crosslinking agents, antiblocking agents, antioxidants, detackifying agents, antifoaming agents, nanoparticles, bleaching agents, surfactants, and combinations thereof.

24. An article according to any one of the preceding claims, having a strength of at least 200N, preferably at least 300N, more preferably at least 400N, when measured according to the method described herein.

25. The article of any one of the preceding claims, wherein the detergent composition comprises from 5% to 60% of a non-soap anionic surfactant, by weight of the detergent composition.

26. The article of any one of the preceding claims, wherein the detergent composition comprises from 1% to 25% nonionic surfactant, by weight of the detergent composition.

27. The article of any one of the preceding claims, wherein the detergent composition comprises from 0.5% to 15% water, by weight of the detergent composition.

28. A method for manufacturing an article according to any one of claims 1 to 27, said method comprising: i) thermoforming and / or vacuum forming the film to create a cavity; ii) filling the cavity with a detergent composition or a portion thereof; and iii) closing the cavity with a pre-formed compartment containing the detergent composition or a portion thereof to create a multi-compartment water-soluble unit dose detergent article containing overlapping compartments.

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