Consumer product compositions with at least two encapsulate populations

Abstract

To provide encapsulate-containing consumer product compositions, such as fabric care compositions, that provide desirable performance across a variety of consumer touchpoints.SOLUTION: A consumer product composition comprises: a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, where the first core material and the first shell material are present in a first core:shell weight ratio of 95:5 or more; and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, where the second core material and the second shell material are present in a second core:shell weight ratio of less than 95:5.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present disclosure relates to consumer product compositions, such as fabric care compositions, that include a first population and a second population of encapsulates, at least one of the populations being characterized by a relatively high core:shell weight ratio. The present disclosure also relates to methods associated with the use and production of such compositions. [Background technology]

[0002] Many consumer product compositions include encapsulated benefit agents. Such encapsulations may be core / shell encapsulations and may serve to improve the delivery efficiency, stability, and / or performance of the benefit agent.

[0003] The encapsulation may be characterized by a fracture strength, which is a measure of how much pressure is required to burst the encapsulation, thereby releasing the benefit agent. The fracture strength can be used to help predict at which consumer touch point the encapsulation will burst.

[0004] In addition, inclusion bodies can be characterized by particle size. The size of the inclusion bodies can affect the delivery or deposition efficiency to the target surface. For example, inclusion bodies can be deposited on the target fabric at least partially through a filtration mechanism, whereby inclusion bodies of a certain size become captured by the fabric fibers during a wash or rinse cycle, while other inclusion bodies pass through. Thus, a given fabric may be more likely to capture inclusion bodies of a certain size that are larger than other sizes.

[0005] However, it is believed that inclusions of approximately the same size in a given population are likely to be characterized by similar fracture strengths. If inclusions are characterized by similar fracture strengths, they are likely to rupture at similar touch points. This may mean that if a treated surface, such as a fabric, contains inclusions of similar size and fracture strength, it may perform adequately at certain touch points, while performing poorly at others. Summary of the Invention [Problem to be solved by the invention]

[0006] There is a need for consumer product compositions containing encapsulates that provide desirable performance across a variety of consumer touchpoints. [Means for solving the problem]

[0007] The present disclosure relates to a consumer product composition, such as a fabric composition, a household composition, or a hair care composition, comprising at least two populations of encapsulates that contain a benefit agent at their core.

[0008] For example, the present disclosure relates to a consumer product composition comprising a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, and the first core material and the first shell material being present in a first core:shell weight ratio of 95:5 or greater, and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, and the second core material and the second shell material being present in a second core:shell weight ratio of less than 95:5.

[0009] The present disclosure also relates to a consumer product composition comprising a first population of first encapsulations having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, the first core material and the first shell material being present in a first core:shell weight ratio of 95:5 or greater, the first encapsulations of a given size being characterized by a first breaking strength, and a second population of second encapsulations having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, the second encapsulations of a given size being characterized by a second breaking strength, wherein the difference between the first breaking strength and the second breaking strength is at least 0.5 MPa, preferably at least 1.0 MPa, more preferably at least 1.5 MPa, even more preferably at least 2.0 MPa, and even more preferably at least 3 MPa.

[0010] The present disclosure also relates to a consumer product composition comprising a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, and the first wall material being derived at least in part from a hexafunctional (meth)acrylate monomer; and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, and the second wall material being derived at least in part from a trifunctional (meth)acrylate monomer, wherein the first and second populations of PMC are each independently characterized by a volume weighted median particle size of from about 10 um to about 50 um.

[0011] The present disclosure also relates to a method of treating a surface, the method comprising contacting the surface with a consumer product composition according to the present disclosure, optionally in the presence of water. [Brief description of the drawings]

[0012] The drawings herein are illustrative in nature and are not intended to be limiting. [Figure 1]Graphs are shown plotting inclusion body size at d5, d50, and d90 for various inclusion body populations against their respective disruption intensities. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The present disclosure relates to consumer product compositions comprising two or more populations of inclusion bodies, the populations being selected such that similarly sized inclusion bodies selected from each population are characterized by different breaking strengths.

[0014] This is accomplished by providing a first inclusion body population that includes inclusion bodies having a relatively high weight ratio of core material to shell material, for example, 95:5 or greater. The second inclusion body population may include inclusion bodies having a relatively low core:shell weight ratio.

[0015] Without wishing to be bound by theory, it is believed that selecting an appropriate core:wall weight ratio for one or both inclusion body populations can provide a consumer product composition that offers improved performance across a variety of consumer touchpoints compared to compositions including only one inclusion body population or the other, or more specific combinations of inclusion body populations. In addition, selecting a high core:shell weight ratio for at least a first population, and optionally a volume-weighted median particle size, can provide a mass-efficient delivery system that performs particularly well at "dry" and "rubbed" fabric touchpoints.

[0016] The components, compositions, and processes of the present disclosure are described in more detail below.

[0017] As used herein, the articles "a" and "an" when used in a claim are understood to mean one or more of what is claimed or described. As used herein, the terms "include", "includes" and "including" are meant to be open-ended. The compositions of the present disclosure may comprise, consist essentially of, or consist of the components of the present disclosure.

[0018] The terms "substantially free of" or "substantially free from" may be used herein. This means that the indicated material is in minimal amounts and has not been intentionally added to the composition to form part of the composition, or preferably is not present at analytically detectable levels. It means that the indicated material is present only as an impurity in one of the other intentionally included materials. The indicated material may be present, if at all, at a level of less than 1% by weight of the composition, or less than 0.1% by weight, or less than 0.01% by weight, or even 0% by weight.

[0019] As used herein, "consumer product" means a baby care, beauty care, fabric and home care, family care, feminine care, health care product or device that is intended for use or consumption in the form in which it is sold and not intended for subsequent commercial manufacture or modification. Such products include, but are not limited to, diapers, bibs, wipes; products and / or related methods for treating human hair (including for bleaching, coloring, dyeing, conditioning, shampooing, styling); deodorants and antiperspirants; personal cleansing; skin care, including the application of creams, lotions, and other products applied topically for consumer use; and shaving products, products and / or related methods for treating fabrics, hard surfaces, and any other surface in the fabric and home care arena (including air care, auto care, dishwashing, fabric conditioning (softening), etc.). products and / or methods related to toilet paper, tissues, paper handkerchiefs, and / or paper towels; tampons, feminine napkins; adult incontinence products; oral care products and / or methods including toothpaste, tooth gels, tooth rinses, denture adhesives, tooth whitening agents; non-prescription health care including cough and cold treatments; pest control products, and water purification.

[0020] As used herein, the phrase "fabric care composition" includes compositions and formulations designed to treat fabric.Such compositions include, but are not limited to, laundry cleaning compositions and detergents, fabric softening compositions, fabric enhancing compositions, fabric deodorising compositions, laundry pre-cleaning agents, laundry pre-treatment agents, laundry additives, spray products, dry cleaning agents or compositions, laundry rinse additives, cleaning additives, post-rinse fabric treatment agents, ironing aids, unit dose formulations, delayed delivery formulations, detergents contained on or in porous substrates or nonwoven sheets, and other suitable forms that may be apparent to those skilled in the art in light of the teachings herein.Such compositions can be used as laundry pre-treatment agents, laundry post-treatment agents, or can be added during the rinse or wash cycle of laundry operations.

[0021] As used herein, reference to the term "(meth)acrylate" or "(meth)acrylic" should be understood to mean both the acrylate and methacrylate versions of a particular monomer, oligomer, and / or prepolymer. For example, "allyl (meth)acrylate" indicates that both allyl methacrylate and allyl acrylate are possible, similarly, reference to an alkyl ester of (meth)acrylic acid indicates that both alkyl esters of acrylic acid and alkyl esters of methacrylic acid are possible, similarly, poly(meth)acrylate indicates that both polyacrylate and polymethacrylate are possible. Poly(meth)acrylate materials include, for example, polyester poly(meth)acrylates, urethane and polyurethane poly(meth)acrylates (especially those prepared by the reaction of hydroxyalkyl (meth)acrylates with polyisocyanates or urethane polyisocyanates), methyl cyanoacrylate, ethyl cyanoacrylate, diethylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, ethylene glycol di(meth)acrylate, allyl (meth)acrylate, glycidyl (meth)acrylate, (meth)acrylate functional silicones, di-, tri-, and tetraethylene glycol di(meth)acrylate, dipropylene ... The term is intended to encompass a wide range of polymeric materials, including bisphenol A di(meth)acrylate, polyethylene glycol di(meth)acrylate, di(pentamethylene glycol) di(meth)acrylate, ethylene di(meth)acrylate, neopentyl glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, ethoxylated bisphenol A di(meth)acrylate, bisphenol A di(meth)acrylate, diglycerol di(meth)acrylate, tetraethylene glycol dichloroacrylate, 1,3-butanediol di(meth)acrylate, neopentyl di(meth)acrylate, trimethylolpropane tri(meth)acrylate, as well as various multifunctional (meth)acrylates. Monofunctional (meth)acrylates, i.e., those containing only one (meth)acrylate group, may also be used advantageously.Exemplary mono(meth)acrylates include 2-ethylhexyl(meth)acrylate, 2-hydroxyethyl(meth)acrylate, cyanoethyl(meth)acrylate, 2-hydroxypropyl(meth)acrylate, p-dimethylaminoethyl(meth)acrylate, lauryl(meth)acrylate, cyclohexyl(meth)acrylate, tetrahydrofurfuryl(meth)acrylate, chlorobenzyl(meth)acrylate, aminoalkyl(meth)acrylates, various alkyl(meth)acrylates, and glycidyl(meth)acrylate. Mixtures of (meth)acrylates or their derivatives, as well as combinations of one or more (meth)acrylate monomers, oligomers, and / or prepolymers or their derivatives with other copolymerizable monomers, including acrylonitrile and methacrylonitrile, may be used as well.

[0022] As used herein, "delivery particles," "particles," "encapsulations," "microcapsules," and "capsules" are used interchangeably unless otherwise indicated.

[0023] For ease of reference in the specification and claims, the term "monomer" or "monomers" as used herein, in relation to the wall polymer, should be understood to mean a monomer, but also to include oligomers or monomers, and also to encompass prepolymers formed from a particular monomer.

[0024] Unless otherwise noted, all component or composition levels refer to the active portion of that component or composition and are exclusive of impurities, e.g., residual solvents or by-products, that may be present in commercial sources of such component or composition.

[0025] All temperatures herein are in degrees Celsius (° C.) unless otherwise indicated. All measurements herein are made at 20° C. and atmospheric pressure unless otherwise stated.

[0026] In all embodiments of the present disclosure, all percentages are by weight of the total composition unless otherwise specified. All ratios are by weight unless otherwise specified.

[0027] It should be understood that every maximum numerical limitation given throughout this specification includes every lower numerical limitation, as if such lower numerical limitations were expressly written herein. Every minimum numerical limitation given throughout this specification is intended to include every higher numerical limitation, as if such higher numerical limitations were expressly written herein. Every numerical range given throughout this specification will include every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.

[0028] consumer product compositions The present disclosure relates to consumer product compositions (or simply "compositions" as used herein). The compositions of the present disclosure may include a first and a second population of inclusion bodies, as described in more detail below. The compositions may further include consumer supplement ingredients.

[0029] The consumer product composition of the present disclosure may be useful in baby care, beauty care, fabric care, home care, family care, feminine care, and / or health care applications. The consumer product composition may be useful for treating surfaces such as fabric, hair, or skin. The consumer product composition may be intended to be used or consumed in the manner in which it is sold. The consumer product composition may not be intended for subsequent commercial manufacture or modification.

[0030] The consumer product composition may be a fabric care composition, a hard surface cleaner composition, a dish care composition, a hair care composition, a body cleansing composition, or a mixture thereof.

[0031] The consumer product may be a fabric care composition such as a laundry detergent composition (including heavy duty liquid detergents or unit use articles), a fabric conditioning composition (including liquid fabric softening compositions and / or fabric strengthening compositions), a laundry additive, a fabric pretreatment composition (including sprays, pourable liquids, or sprays), a fabric refresher composition (including sprays), or mixtures thereof.

[0032] The consumer product composition may be in the form of a liquid composition, a granular composition, a hydrocolloid, a single compartment pouch, a multi-compartment pouch, a dissolvable sheet, pastilles or beads, a fibrous article, a tablet, a stick, a bar, a flake, a foam / mousse, a nonwoven sheet, or mixtures thereof.

[0033] The composition may be in the form of a liquid. The liquid composition may comprise from about 30% by weight, or from about 40% by weight, or from about 50% by weight, to about 99% by weight, or from about 95% by weight, or from about 90% by weight, or from about 75% by weight, or from about 70% by weight, or from about 60% by weight of the composition. The liquid composition may be a liquid laundry detergent, a liquid fabric softener, a liquid dish detergent, a hair shampoo, a hair conditioner, or a mixture thereof.

[0034] The composition may be in the form of a solid. The solid composition may be a powdered or granular composition. Such compositions may be agglomerated or spray dried. Such compositions may comprise a plurality of granules or particles, at least some of which comprise different compositions. The composition may be a powdered or granular cleaning composition, which may include a bleaching agent. The composition may be in the form of beads or pastilles, which may be tableted from a liquid melt. The composition may be an extruded product.

[0035] The composition may be in the form of a single-use article, such as a tablet, pouch, sheet, or fiber article. Such pouches typically include a water-soluble film, such as a polyvinyl alcohol water-soluble film, that at least partially encapsulates the composition. Suitable films are available from MonoSol, LLC (Indiana, USA). The composition may be encapsulated in a single-compartment pouch or a multi-compartment pouch. A multi-compartment pouch may have at least two, at least three, or at least four compartments. A multi-compartment pouch may include compartments arranged side-by-side and / or stacked. The composition contained in the pouch or its compartments may be liquid, solid (such as a powder), or a combination thereof. The pouched composition may have a relatively small amount of water, such as less than about 20% by weight of the detergent composition, or less than about 15% by weight, or less than about 12% by weight, or less than about 10% by weight, or less than about 8% by weight.

[0036] The composition may be in the form of a spray, for example, dispensed via an aerosol container having a trigger sprayer and / or a valve.

[0037] The composition is then cooled for 20 seconds. -1 and at 21°C, it may have a viscosity of 1 to 1500 centipoise (1 to 1500 mPa·s), 100 to 1000 centipoise (100 to 1000 mPa·s), or 200 to 500 centipoise (200 to 500 mPa·s).

[0038] Additional components and / or features of the compositions, such as encapsulates and consumer product adjuncts, are discussed in more detail below.

[0039] Inclusion bodies The consumer product composition of the present disclosure may include a first population of encapsulates and a second population of encapsulates. Generally, the encapsulates of both populations are core / shell encapsulates, where the core is surrounded by the shell. Typically, the core includes a core material that includes a benefit agent. The shell includes a shell material, which may include a polymeric material.

[0040] The composition may comprise from about 0.05% to about 20%, or from about 0.05% to about 10%, or from about 0.1% to about 5%, or from about 0.2% to about 2% of the encapsulated bodies, total, by weight of the composition. The composition may comprise from about 0.05% to about 10%, or from about 0.1% to about 5%, or from about 0.1% to about 2% of the total encapsulated bodies, total, by weight of the composition, sufficient to provide the composition with from about 0.05% to about 10%, or from about 0.1% to about 5%, or from about 0.1% to about 2% of the benefit agent, preferably fragrance, by weight of the composition. As discussed herein, the amount or weight percent of the encapsulated bodies refers to the combined shell material and core material.

[0041] The first and second populations of inclusions may be present in any suitable ratio, although it may be desirable for the inclusions, or the benefit agents delivered by the inclusions, to be present in somewhat similar amounts so that there is some consistency in performance at different touch points.

[0042] For example, the consumer product composition may include the first population and the second population in a weight ratio of from about 1:10 to about 10:1, or from about 1:5 to about 5:1, or from about 1:3 to about 3:1, or from about 1:2 to about 2:1, or from about 1:1.5 to about 1.5:1, or about 1:1.

[0043] The first and second populations of encapsulated bodies may each contain different amounts of encapsulated benefit agent, so that a weight ratio can be provided with respect to the benefit agents present. For example, the first and second populations may be present in amounts sufficient to provide a weight ratio of the first benefit agent (located in the first population of encapsulated bodies) to the second benefit agent (located in the second population of encapsulated bodies) ranging from about 1:10 to about 10:1, or from about 1:5 to about 5:1, or from about 1:3 to about 3:1, or from about 1:2 to about 2:1, or from about 1:1.5 to about 1.5:1, or about 1:1.

[0044] The inclusion bodies of either or both populations may be characterized by a volume weighted particle size. The first population, the second population, or both, may have a volume weighted median inclusion body size of about 0.5 microns to about 100 microns, or even 10 to 100 microns, preferably about 1 micron to about 60 microns, or even 10 microns to 50 microns, or even 20 microns to 45 microns, or even 20 microns to 60 microns.

[0045] The first population of inclusion bodies may be characterized by a first volume-weighted median particle size. The second population of inclusion bodies may be characterized by a second volume-weighted median particle size. It may be desirable for the first and second volume-weighted median particle sizes to be relatively similar, which may facilitate the attachment of the inclusion bodies to similar surfaces. The difference between the first and second volume-weighted median particle size may be less than 15 microns, or less than 10 microns, or less than 5 microns, or less than 3 microns. On the other hand, it may be desirable for the first and second volume-weighted median particle size to be relatively different, which may facilitate the attachment of the inclusion bodies to different surfaces. The difference between the first and second volume-weighted median particle size may be greater than 5 microns, or greater than 10 microns, or greater than 15 microns, and may preferably be less than 50 microns, since inclusion bodies with significantly different volume-weighted median particle sizes may not be suitable for use in the same composition.

[0046] The first population of inclusion bodies may be characterized by a first volume weighted median particle diameter of about 30 microns to about 50 microns. In such cases, for performance reasons, it may be preferred that the second population of inclusion bodies be characterized by a second volume weighted median particle diameter that is less than the first volume weighted median particle diameter, e.g., the second volume weighted median particle diameter is about 10 microns to about 30 microns. On the other hand, for performance reasons, it may be preferred that the second population of inclusion bodies be characterized by a second volume weighted median particle diameter that is also less than the first volume weighted median particle diameter, e.g., also about 30 microns to about 50 microns.

[0047] Although volume-weighted particle size can be useful in describing the median diameter of a population, other measurements, such as particle diameter determined by light microscopy, can be used to describe individual inclusion bodies.

[0048] Inclusion bodies from one or more populations of a given size may be analyzed for various characteristics, such as crushing strength. In other words, inclusion bodies of a given size from a first population of inclusion bodies may be compared to inclusion bodies of the same given size from a second population. The given size may be based on particle diameter, between 5 microns and 50 microns, preferably between 5 microns and 45 microns, more preferably between 5 microns and 20 microns, more preferably between 10 microns and 20 microns, and most preferably 10 microns. It is believed that particles from different populations according to the present disclosure are more likely to have relatively large differences, for example, in crushing strength, at relatively small particle sizes.

[0049] Either or both populations of inclusion bodies may be characterized by their breaking strength, which is determined according to the procedures provided in the Test Methods section below.

[0050] The first population of inclusion bodies, the second population of inclusion bodies, or both, may be subjected to a d pressure of about 0.2 MPa to about 30 MPa, or about 0.4 MPa to about 10 MPa, or about 0.6 MPa to about 5 MPa, or even about 0.8 MPa to about 4 MPa. 50 The population of inclusion bodies may be characterized by a breaking strength at d (absolute breaking strength at the median diameter of the population) of about 0.2 MPa to about 10 MPa, or about 0.5 MPa to about 8 MPa, or about 0.5 MPa to about 6 MPa, or about 0.5 MPa to about 5 MPa, or about 0.7 MPa to about 4 MPa, or about 1 MPa to about 3 MPa. 50 These levels of d can be characterized by the breaking strength at the median diameter of the population (absolute breaking strength at the median diameter of the population). 50 It is believed that an encapsulation having a breaking strength at will perform well at one or more touch points that are typical of a surface such as a fabric treated with a composition according to the present disclosure.

[0051] The first and second populations of inclusion bodies may be characterized by a difference in rupture strength. The difference is the d50 The breaking strength at (first breaking strength) and d of the second group 50 The breaking strength at the first breaking point may be the difference between the breaking strength at the first breaking point and the breaking strength at the second breaking point.

[0052] The difference in fracture strength between the first and second populations may be based on a comparison of inclusion bodies from each population, where the inclusion bodies being compared are of a predetermined particle size. The first population may include a first inclusion body of a predetermined size that may be characterized by a first fracture strength. The second population may include a second inclusion body of a predetermined particle size that may be characterized by a second fracture strength.

[0053] The first breaking strength, the second breaking strength, or both may independently be from about 0.5 to about 10 MPa, preferably from about 0.5 to about 8 MPa, and more preferably from about 0.5 to about 5 MPa.

[0054] The first breaking strength may be greater than the second breaking strength. The second breaking strength may be greater than the first breaking strength.

[0055] As mentioned above, it may be desirable that the first and second breaking strengths are sufficiently different so that the capsules of each population tend to burst at different touch points or under different forces. Therefore, it may be desirable that the first and second breaking strengths differ by a certain minimum value so that the forces and / or touch points that cause bursting are significantly different. It may be desirable that the difference is limited to a maximum extent so that the inclusions can burst at touch points relevant to the consumer. For example, if the breaking strength of the population is too low, the inclusions may tend to burst before the consumer uses the composition. If the breaking strength is too high, the inclusions may not burst well under normal use patterns.

[0056] The difference between the first and second breaking strengths may be at least about 0.5 MPa, preferably at least about 1.0 MPa, more preferably at least about 1.5 MPa, even more preferably at least about 2.0 MPa, even more preferably at least about 3 MPa. The difference between the first and second breaking strengths may be from about 0.5 MPa to about 15 MPa, or from 1 MPa to about 12 MPa, or from about 1 MPa to about 10 MPa, or from about 1 MPa to about 7.5 MPa, or from about 1 MPa to about 5 MPa, or from about 1 MPa to about 4 MPa, or from about 1 MPa to about 3 MPa, or from about 1 MPa to about 2 MPa.

[0057] The first breaking strength may be 75% or less of the second breaking strength, preferably 10% to 75%, more preferably 10% to 60%, and even more preferably 10% to 50% greater than the second breaking strength. The first breaking strength may be at least 125%, preferably 125% to 1000%, more preferably 150% to 1000%, even more preferably 250% to 1000%, and more preferably 200% to 1000% of the second breaking strength.

[0058] Core material The encapsulation bodies of the present disclosure include a core. The core may include a benefit agent. Suitable benefit agents disposed within the core may include benefit agents that provide benefits to surfaces such as fabrics or hair. The core of a first population of encapsulations may include a first benefit agent, and the core of a second population of encapsulations may include a second benefit agent. The first and second benefit agents may be the same. The first and second benefit agents may be different. For example, the first and second benefit agents may both include a perfume raw material, but the perfume raw material may not be the same in both and / or may not be present at the same level.

[0059] The core may comprise from about 20% to about 100%, or from about 20% to about 99%, or from about 45% to about 95%, preferably from about 50% to about 80%, more preferably from about 50% to about 70% benefit agent, preferably a fragrance ingredient, by weight of the core.

[0060] Benefit agents (including primary benefit agents and / or secondary benefit agents) include, but are not limited to, fragrance raw materials, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, lubricants, lipids, skin cooling agents, vitamins, sunscreens, antioxidants, glycerin, catalysts, bleach particles, silicon dioxide particles, malodor reducing agents, odor control materials, chelating agents, antistatic agents, fabric softeners, insect and moth repellents, colorants, antioxidants, chelating agents, thickeners, drape and foam control agents, smoothing agents, wrinkle control agents, sanitizing agents, disinfectants, bacterial inhibitors, mold inhibitors, mildew inhibitors, antiviral agents, drying agents, stain resistant agents, agents, soil release agents, fabric refreshing and fresh feeling maintenance agents, chlorine bleach odor control agents, dye fixatives, dye transfer inhibitors, color retention agents, optical brighteners, color restoration / renewal agents, anti-fade agents, whiteness enhancers, anti-abrasion agents, abrasion resistance agents, fabric integration agents, anti-abrasion agents, anti-fuzz agents, foam suppressants, defoamers, UV protection agents, sun fade inhibitors, anti-allergy agents, enzymes, waterproofing agents, fabric comfort agents, shrink resistance agents, stretch resistance agents, stretch recovery agents, skin care agents, glycerin, synthetic or natural actives, antimicrobial actives, antiperspirant actives, cationic polymers, dyes, and mixtures thereof.

[0061] Preferably, the encapsulated benefit agent in the core of the first and / or second population of inclusions may include perfume raw materials. As used herein, the term "perfume raw material (or abbreviated as PRM)" refers to a compound having a molecular weight of at least about 100 g / mol, which is useful for imparting odor, fragrance, essence or scent, alone or together with other perfume raw materials. Typical PRMs include, among others, alcohols, ketones, aldehydes, esters, ethers, nitrites, and alkenes such as terpenes. Lists of common PRMs can be found in various reference sources, such as, for example, "Perfume and Flavor Chemicals" Vol. I and Vol. II; Steffen Arctander Allured Pub.Co. (1994) and "Perfumes: Art, Science and Technology", Miller, PM and Lamparsky, D., Blackie Academic and Professional (1994).

[0062] PRMs may be characterized by their boiling point (BP) measured at normal pressure (760 mmHg) and octanol / water partition coefficient (P), which may be described in terms of logP, determined according to the following test method. Based on these characteristics, PRMs may be classified as Quadrant I, Quadrant II, Quadrant III, or Quadrant IV fragrances, as described in more detail below.

[0063] The perfume raw materials may include perfume raw materials selected from the group consisting of perfume raw materials having a boiling point (BP) below about 250° C. and a log P below about 3, perfume raw materials having a BP above about 250° C. and a log P above about 3, perfume raw materials having a BP above about 250° C. and a log P below about 3, perfume raw materials having a BP below about 250° C. and a log P above about 3, and mixtures thereof. Perfume raw materials having a boiling point BP below about 250° C. and a log P below about 3 are known as Quadrant I perfume raw materials. Quadrant 1 perfume raw materials are preferably limited to less than 30% of the perfume composition. Perfume raw materials having a BP higher than about 250° C. and a log P higher than about 3 are known as Quadrant IV perfume raw materials, those having a BP higher than about 250° C. and a log P lower than about 3 are known as Quadrant II perfume raw materials, and those having a BP lower than about 250° C. and a log P higher than about 3 are known as Quadrant III perfume raw materials. Suitable Quadrant I, II, III and IV perfume raw materials are disclosed in U.S. Patent No. 6,869,923 (B1).

[0064] The first benefit agent, the second benefit agent, or both may contain perfume raw materials. Preferably, the first and second benefit agents both contain perfume raw materials. To provide a more complex fresh wash experience, it may be preferred that the first benefit agent and the second benefit agent contain different perfume raw materials. As used herein, this may mean that the first benefit agent contains one or more perfume raw materials that are present / not present in the second benefit agent, or vice versa. Additionally or alternatively, this may mean that the first benefit agent contains one or more perfume raw materials that are present at a different level than the level of one or more perfume raw materials found in the second benefit agent.

[0065] The core of the first population, the second population, or both of the encapsulates may include a partitioning modifier (e.g., isopropyl myristate) in addition to the benefit agent (e.g., fragrance). The incorporation of the partitioning modifier can adjust the polarity of the core, thereby changing the partition coefficient of the polar material in the partitioning modifier relative to the shell monomer or oligomer, and can establish a well-defined, highly impermeable shell, especially when the shell material includes an acrylate material. The partitioning modifier may be combined with the core perfume oil material prior to the incorporation of the wall-forming monomer.

[0066] The core may comprise, in addition to the encapsulated benefit agent, from greater than 0% to about 80%, preferably greater than 0% to about 50%, more preferably greater than 0% to about 30%, and most preferably greater than 0% to about 20% of a partitioning modifier based on the total weight of the core. The partitioning modifier may be present in the core at a level of from about 5% to about 55%, preferably from about 10% to about 50%, and more preferably from about 25% to about 50% by weight of the core.

[0067] Partition modifiers are vegetable oil, modified vegetable oil, C 4 ~C 24 The modified vegetable oil may include a material selected from the group consisting of mono-, di-, and triesters of fatty acids, isopropyl myristate, dodecanophenone, lauryl laurate, methyl behenate, methyl laurate, methyl palmitate, methyl stearate, and mixtures thereof. The partitioning modifier may preferably include isopropyl myristate, or may even consist of isopropyl myristate. The modified vegetable oil may be esterified and / or brominated. The modified vegetable oil may preferably include castor oil and / or soybean oil. U.S. Patent Application Publication No. 2011 / 0268802, incorporated herein by reference, describes other partitioning modifiers that may be useful in the benefit agent encapsulates described herein.

[0068] B. Shell material The first and second populations of inclusion bodies may each include a shell surrounding the inclusion body core. It should be noted that, as used herein, the terms "shell," "wall," and "polymeric wall" are used interchangeably unless otherwise indicated. The shell typically includes a shell material that includes a polymeric material.

[0069] The shells of the first population of inclusions may comprise a first shell material. The shells of the second population of inclusions may comprise a second material. The first shell material and the second shell material may be the same or different.

[0070] The first shell material, the second shell material, or both may comprise a (meth)acrylate material. Preferably, both the first and second shell materials comprise a (meth)acrylate material. The (meth)acrylate material may be derived, at least in part, from a multifunctional (meth)acrylate monomer or oligomer having at least 3, preferably at least 4, preferably at least 5, preferably at least 6, more preferably exactly 6 radically polymerizable functional groups, provided that at least one of the radically polymerizable groups is an acrylate or methacrylate group. The multifunctional (meth)acrylate monomer or oligomer may be oil-soluble or oil-dispersible. The one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers may comprise 3 to 6, preferably 4 to 6, more preferably 5 to 6, most preferably 6 radically polymerizable functional groups. Radical polymerizable functional groups. Monomers containing a relatively large number of radically polymerizable groups are believed to result in delivery particles with favorable properties, such as, for example, more compact walls and less leakage, compared to walls formed from monomers having a fewer number of radically polymerizable groups.

[0071] The first shell material, the second shell material, or both may comprise about 5% to about 100% by weight of the respective shell material (meth)acrylate polymer, preferably about 40% to about 100% by weight, more preferably about 50% to about 100% by weight, more preferably about 75% to about 100% by weight, more preferably about 85% to about 100% by weight, more preferably about 90% to about 100% by weight, and even more preferably about 95% to about 100% by weight. The first shell material, the second shell material, or both may comprise from about 5% to about 100% by weight of the respective shell material, preferably from about 40% to about 100% by weight, more preferably from about 50% to about 100% by weight, more preferably from about 75% to about 100% by weight, more preferably from about 85% to about 100% by weight, more preferably from about 90% to about 100% by weight, and even more preferably from about 95% to about 100% by weight of an oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer. The (meth)acrylate polymer may comprise about 5% by weight to about 100% by weight, preferably about 40% by weight to about 100% by weight, more preferably about 50% by weight to about 100% by weight, more preferably about 75% by weight to about 100% by weight, more preferably about 85% by weight to about 100% by weight, more preferably about 90% by weight to about 100% by weight, and even more preferably about 95% by weight to about 100% by weight of an oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer.

[0072] The radically polymerizable functional groups may be independently selected from the group consisting of acrylate, methacrylate, styrene, allyl, vinyl, glycidyl, ether, epoxy, carboxyl, or hydroxyl, provided that at least one of the radically polymerizable functional groups is an acrylate or methacrylate. Preferably, at least two, or at least three, or at least four, or at least five, or at least six of the radically polymerizable functional groups are acrylate or methacrylate groups. Preferably, each of the radically polymerizable functional groups is independently selected from the group consisting of acrylate and methacrylate. It is believed that these functional groups result in delivery particles with favorable properties, such as less leakage at high core:wall ratios, compared to other functional groups.

[0073] The (meth)acrylate monomer or oligomer may be a monomer selected from the group consisting of a hexafunctional (meth)acrylate, a trifunctional (meth)acrylate, or a mixture thereof, preferably a hexafunctional aromatic acrylate, an isocyanurate triacrylate, or a mixture thereof, more preferably a hexafunctional aromatic urethane acrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, or a mixture thereof.

[0074] The (meth)acrylate polymer of the polymer wall may be derived from at least two different multifunctional (meth)acrylate monomers, such as a first and a second multifunctional (meth)acrylate monomer, each of which may preferably be oil-soluble or oil-dispersible. The first multifunctional (meth)acrylate monomer may contain a different number of radically polymerizable functional groups compared to the second multifunctional (meth)acrylate monomer. For example, the first multifunctional (meth)acrylate monomer may contain six radically polymerizable functional groups (hexafunctional), and the second multifunctional (meth)acrylate monomer may contain less than six, such as a number selected from three (e.g., trifunctional), four (e.g., tetrafunctional), or five (e.g., pentafunctional), preferably five. The first and second multifunctional (meth)acrylate monomers may contain the same number of radically polymerizable functional groups, for example six (e.g., both monomers are hexafunctional), but each monomer is characterized by a different structure or chemistry.

[0075] In addition to the oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer, the (meth)acrylate material of the shell may further be derived from a water-soluble or water-dispersible mono- or polyfunctional (meth)acrylate monomer or oligomer that may contain hydrophilic functionality. The water-soluble or water-dispersible mono- or polyfunctional (meth)acrylate monomer or oligomer may preferably be selected from the group consisting of amine (meth)acrylates, acidic (meth)acrylates, polyethylene glycol di(meth)acrylates, ethoxylated mono- or polyfunctional (meth)acrylates, ethoxylated polyfunctional (meth)acrylates, other (meth)acrylate monomers, other (meth)acrylate oligomers, and mixtures thereof.

[0076] The first shell material may comprise a first (meth)acrylate material. The second shell material may comprise a second (meth)acrylate material.

[0077] The first (meth)acrylate material may be the same as the second (meth)acrylate material, and preferably may be derived at least in part from a hexafunctional (meth)acrylate, more preferably from a hexafunctional aromatic acrylate, and even more preferably from a hexafunctional aromatic urethane acrylate. Additionally or alternatively, the oil-soluble or oil-dispersible multifunctional (meth)acrylate monomer or oligomer may include a multifunctional aliphatic urethane acrylate. The oil-soluble or oil-dispersible (meth)acrylate may further include a monomer selected from an amine methacrylate, an acidic methacrylate, or a combination thereof.

[0078] The first (meth)acrylate material and the second (meth)acrylate material may be derived from different monomers, different ratios of monomers, or combinations thereof. For example, the first (meth)acrylate material may be derived at least in part from a hexafunctional (meth)acrylate monomer, and the second (meth)acrylate material may be derived at least in part from a tri(meth)acrylate monomer. The first and second populations of inclusions may each independently be characterized by a volume weighted median particle size of about 10 um to about 50 um. The first core material and the first shell material may be present in a first weight ratio, and the second core material and the second shell material may be present in a second weight ratio, the first weight ratio being greater than the second weight ratio, preferably the first weight ratio being greater than 90:10, more preferably greater than 95:5, and preferably the second weight ratio being about 90:10 or less.

[0079] It is possible that the first shell material comprises a (meth)acrylate material and the second shell material does not comprise a (meth)acrylate material. In such a case, the second shell material may comprise a material selected from the group consisting of aminoplasts (such as melamine), polyacrylamides, silicones, silicas, polystyrenes, polyureas, polyurethanes, gelatins, styrene maleic anhydrides, polyamides, aromatic alcohols, polyvinyl alcohols, and mixtures thereof. The second shell material preferably comprises an aminoplast, a polyurea, or a combination thereof. If an aminoplast is present in the second shell material, the aminoplast may preferably comprise melamine, more preferably melamine-formaldehyde.

[0080] The shell material, particularly when the shell material comprises a (meth)acrylate material, preferably the first shell material, may further be derived, at least in part, from at least one free radical initiator, preferably at least two free radical initiators. The at least one free radical initiator may preferably comprise a water-soluble or water-dispersible free radical initiator.

[0081] Without wishing to be bound by theory, it is believed that improved capsules can be obtained by selecting an appropriate amount of initiator relative to the total wall material (and / or wall monomer / oligomer). For example, it is believed that too low an initiator level can result in insufficient polymer wall formation; too high a level can result in an encapsulation wall having a relatively low level of structuring monomer. In either situation, the resulting capsules will be relatively leaky and / or fragile. Furthermore, it is believed that optimization of encapsulation wall formation, aided by appropriate selection of relative initiator levels, is particularly important for capsules having a relatively high core:wall ratio, given the relatively low amount of wall material.

[0082] Thus, the amount of initiator present may be from about 2% to about 50% by weight, preferably from about 5% to about 40% by weight, more preferably from about 10% to about 40% by weight, even more preferably from about 15% to about 40% by weight, even more preferably from about 20% to about 35% by weight, or more preferably from about 20% to about 30% by weight, of the polymer wall (e.g., wall monomers + initiator excluding embedded polymeric emulsifiers, as described herein for core:wall ratios), or of the first shell material, the second shell material, or both. It is believed that relatively higher amounts of initiator within the disclosed ranges may result in improved low-leaking capsules. The optimal amount of initiator may vary depending on the nature of the core material. The (meth)acrylate polymer of the polymer wall may be derived from a first initiator and a second initiator, where the first and second initiators are present in a weight ratio of about 5:1 to about 1:5, or preferably about 3:1 to about 1:3, or more preferably about 2:1 to about 1:2, or even more preferably about 1.5:1 to about 1:1.5.

[0083] One or more free radical initiators can provide a source of free radicals when activated. Suitable free radical initiators can include peroxy initiators, azo initiators, peroxides, and compounds such as 2,2'-azobismethylbutyronitrile, dibenzoyl peroxide, and the like.More specifically, but not by way of limitation, the free radical initiator may be an azo or peroxy initiator, such as peroxides, dialkyl peroxides, alkyl peroxides, peroxy esters, peroxycarbonates, peroxyketones and peroxydicarbonates, 2,2'-azobis(isobutylnitrile), 2,2'-azobis(2,4-dimethylpentanenitrile), 2,2'-azobis(2,4-dimethylvaleronitrile), 2,2'-azobis(2-methylpropane ... Bis(2-methylbutyronitrile), 1,1'-azobis(cyclohexanecarbonitrile), 1,1'-azobis(cyanocyclohexane), benzoyl peroxide, decanoyl peroxide, lauroyl peroxide, benzoyl peroxide, di(n-propyl) peroxydicarbonate, di(sec-butyl) peroxydicarbonate, di(2-ethylhexyl) peroxydicarbonate, 1,1-dimethyl-3-hydroxybutyl peroxyneodecanoate, a-cumyl peroxyneoheptanoate t-amyl peroxyneodecanoate, t-butyl peroxyneodecanoate, t-amyl peroxypivalate, t-butyl peroxypivalate, 2,5-dimethyl 2,5-di(2-ethylhexanoylperoxy)hexane, t-amyl peroxy-2-ethyl-hexanoate, t-butyl peroxy-2-ethylhexanoate, t-butyl peroxyacetate, di-t-amyl peroxyacetate, t-butyl peroxide, di-t-amyl peroxide, 2,5-dimethyl-2,5-di The initiator may be selected from the group of initiators including -(t-butylperoxy)hexyne-3, cumene hydroperoxide, 1,1-di-(t-butylperoxy)-3,3,5-trimethyl-cyclohexane, 1,1-di-(t-butylperoxy)-cyclohexane, 1,1-di-(t-amylperoxy)-cyclohexane, ethyl-3,3-di-(t-butylperoxy)-butyrate, t-amyl perbenzoate, t-butyl perbenzoate, ethyl 3,3-di-(t-amylperoxy)-butyrate, and the like.

[0084] When making the inclusion body population, an emulsifier may be optionally included, preferably in the aqueous phase, preferably when the shell comprises a (meth)acrylate material. The emulsifier may be a polymeric emulsifier. The emulsifier may assist in further stabilization of the emulsion. In forming the polymeric wall of the inclusion body, the polymeric emulsifier may be entrapped in the polymeric wall material. Advantageously, the inclusion of emulsifier in these polymeric walls may be utilized to favor modification of the polymeric wall properties affecting attributes such as flexibility, leakage, strength, and other properties. Thus, the polymeric wall of the delivery particle may further comprise a polymeric emulsifier entrapped in the polymeric wall, preferably the polymeric emulsifier comprises polyvinyl alcohol. The benefit agent delivery particle may comprise about 0.5% to about 40%, more preferably 0.8% to 5%, of an emulsifier, based on the total weight of the benefit agent delivery particle. However, the entrapped polymeric emulsifier is not included when determining the core:wall polymer weight ratio, as shown below.

[0085] c. Core:shell weight ratio As described in more detail above, the first and second populations of inclusions include a core and a shell surrounding the core. Surprisingly, it has been found that, in particular, by selecting a particular ratio or combination of ratios of core material to shell material, compositions exhibiting improved performance can be obtained.

[0086] Without wishing to be bound by theory, it is believed that blending a population of encapsulants, at least one of which has a relatively high core to wall ratio, provides a population with the desired fracture strength profile described in the present disclosure. In addition, encapsulants with a high core:shell ratio can deliver benefit agents more efficiently, requiring less wall material to deliver the same amount of benefit agent. Furthermore, because the encapsulants have a relatively high benefit agent content, less encapsulant material may be required for a particular composition, saving costs and / or freeing up formulation space. It is also believed that such encapsulants can be combined with other encapsulants (e.g., those with a relatively low core:shell ratio) to provide a composition that provides the desired performance.

[0087] The encapsulation population of the present disclosure may be characterized by the core to polymer wall weight ratio ("core polymer wall ratio", "core-wall ratio", "core:"wall ratio", or even "C:W ratio"). A relatively high core:wall ratio is typically preferred to increase the delivery efficiency or relative payload of the particle. However, if this ratio is too high, the capsule may become too fragile or leaky, providing less than optimal performance.

[0088] As used herein, the core:polymer wall ratio is understood to be calculated based on the weight of reacted wall-forming materials and initiator that make up the polymer wall, and for purposes of the calculation, entrapped non-structuring materials such as entrapped emulsifiers are excluded from the calculation. The calculation is based on the starting inputs, i.e., the amount of input monomer and initiator. The calculation of the core:wall polymer ratio of a sample is illustrated in Example 1 below. If the amount of the starting inputs is not readily available, the core:wall ratio is determined according to the analytical determination of core:wall ratio procedure provided in the Test Methods section.

[0089] For a population of inclusion bodies, the core material and shell material may be present in the core:shell weight ratios provided below. A first population may be characterized by a first core:shell weight ratio. A second population may be characterized by a second core:shell weight ratio.

[0090] The first population of inclusion bodies may be characterized by a first core-shell weight ratio of at least about 95:5, preferably at least about 96:4, more preferably at least about 97:3, even more preferably at least about 98:2, and even more preferably at least about 99:1. The first population of inclusion bodies may be characterized by a first core-shell weight ratio of from about 95:5 to about 99.5:0.5, preferably from about 96:4 to about 99:1, more preferably from about 97:3 to about 99:1, and even more preferably from about 98:2 to about 99:1. The first core-shell weight ratio may be from about 96:4 to about 99:1, or from about 96:4 to about 98:2, or from about 97:3 to about 98:2.

[0091] The second core-shell ratio may be substantially the same as the first core-shell ratio. Two encapsulation populations having similar ratios, especially when combined with similar shell materials but different benefit agents (e.g., a first fragrance and a second fragrance, respectively), may provide a richer beneficial experience since the different benefit agents may be released at similar times.

[0092] The second core-shell ratio may be different from the first core-shell ratio. The two inclusion populations with different ratios may result in the release of beneficial agent at different touch points, which may be preferred. The first core-shell ratio and the second core-shell ratio may be different, but the first shell material and the second shell material may be the same or similar. In such a case, the manufacturing complexity may be reduced and / or the product compatibility may be increased. The first core-shell ratio and the second core-shell ratio may be different, and the first shell material and the second shell material may be different. Different materials and core-shell ratios may allow the manufacturer to tailor the product so that the beneficial agent is released at the desired touch point and / or sequence.

[0093] The second population of inclusion bodies may be characterized by a second core-shell weight ratio that is also at least about 95:5, preferably at least about 96:4, more preferably at least about 97:3, even more preferably at least about 98:2, and even more preferably at least about 99:1. The second population of inclusion bodies may be characterized by a second core-shell weight ratio of from about 95:5 to about 99.5:0.5, preferably from about 96:4 to about 99:1, more preferably from about 97:3 to about 99:1, and even more preferably from about 98:2 to about 99:1.

[0094] The second population of inclusion bodies may be characterized by a second core-shell weight ratio that is less than the first core-shell weight ratio. For example, the second core material and the second shell material may be present in a second core-shell weight ratio of less than 95:5, preferably less than 92:8, more preferably less than 90:10, and even more preferably less than 88:12. The second core material and the second shell material may be present in a second core-shell weight ratio of about 80:20 to about 95:5, or about 85:15 to 92:8, or about 85:5 to about 90:10.

[0095] The composition may comprise a first population of inclusion bodies characterized by a (first) core:shell weight ratio of about 97:3 to about 99:1, preferably about 98:2 to about 99:1, and a second population of inclusion bodies characterized by a (second) core:shell weight ratio of about 85:15 to 92:8, preferably about 85:5 to about 90:10.

[0096] d. Shell coating The first population, the second population, or both of the inclusions may include a coating. The shell may include a coating, for example, the coating may be present on the exterior surface of the shell. The inclusions may be produced and then subsequently coated with a coating material. The coating may be useful as an adhesion aid. The coating may include a cationic material, such as a cationic polymer.

[0097] Non-limiting examples of coating materials include poly(meth)acrylates, poly(ethylene-maleic anhydride), polyamines, waxes, polyvinylpyrrolidone, polyvinylpyrrolidone copolymers, polyvinylpyrrolidone-ethyl acrylate, polyvinylpyrrolidone-vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone / vinyl acetate, polyvinyl acetal, polyvinyl butyral, polysiloxanes, poly(propylene maleic anhydride), maleic anhydride derivatives, copolymers of maleic anhydride derivatives, polyvinyl alcohol, styrene-butadiene latex, gelatin, gum arabic, carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, ... Examples of suitable coating materials include, but are not limited to, materials selected from the group consisting of dimethyl cellulose, other modified celluloses, sodium alginate, chitosan, casein, pectin, modified starch, polyvinyl acetal, polyvinyl butyral, polyvinyl methyl ether / maleic anhydride, polyvinyl pyrrolidone and its copolymers, poly(vinyl pyrrolidone / methacrylamidopropyl trimethyl ammonium chloride), polyvinyl pyrrolidone / vinyl acetate, polyvinyl pyrrolidone / dimethylaminoethyl methacrylate, polyvinyl amine, polyvinyl formamide, polyallylamine, and copolymers of polyvinyl amine, polyvinyl formamide, and polyallylamine, and mixtures thereof. The coating material may be a cationic polymer. The coating material may include polyvinyl formamide, chitosan, or a combination thereof.

[0098] When both the first and second populations include a coating, the coating material of the first population (e.g., the first coating material) can be the same as or different from the coating material of the second population (e.g., the second coating material).

[0099] e. Methods for making inclusion bodies The delivery particles may be made according to known methods so long as the core:shell ratios described herein are observed. The methods may be further adjusted to achieve other desirable characteristics described herein, such as volume weighted particle size, relative amounts of benefit agent and / or partitioning modifier, etc.

[0100] For example, the present disclosure relates to a process for making a population of delivery particles comprising a core and a polymer wall encapsulating the core. The process may include providing an oil phase. The oil phase may include a benefit agent and a partitioning modifier as described above. The process may further include dissolving or dispersing in the oil phase one or more oil-soluble or dispersible multifunctional (meth)acrylate monomers or oligomers having at least three, preferably at least four, at least five, or even at least six radically polymerizable functional groups, with the proviso that at least one of the radically polymerizable groups is an acrylate or methacrylate.

[0101] The oil-soluble or dispersible multifunctional (meth)acrylate monomer or oligomer is described in more detail above. In particular, the oil-soluble or dispersible multifunctional (meth)acrylate monomer or oligomer may comprise a multifunctional aromatic urethane acrylate, preferably a trifunctional, tetrafunctional, pentafunctional, or hexafunctional aromatic urethane acrylate, or a mixture thereof, preferably a hexafunctional aromatic urethane acrylate. The monomer or oligomer may comprise one or more multifunctional aliphatic urethane acrylates that can be dissolved or dispersed in the oil phase. The process may further comprise dissolving or dispersing one or more of amine (meth)acrylates or acidic (meth)acrylates in the oil phase.

[0102] The process may further include providing an aqueous phase, which may include an emulsifier, a surfactant, or a combination thereof. The process may further include dissolving or dispersing one or more water-soluble or water-dispersible mono- or polyfunctional (meth)acrylate monomers and / or oligomers in the aqueous phase.

[0103] The process may include dissolving or dispersing one or more amine (meth)acrylates, acid (meth)acrylates, polyethylene glycol di(meth)acrylates, ethoxylated mono- or multifunctional (meth)acrylates, and / or other (meth)acrylate monomers and / or oligomers in the water phase, the oil phase, or both.

[0104] In general, the oil-soluble multifunctional (meth)acrylate monomer is soluble or dispersible in the oil phase, typically to the extent of at least 1 gram in 100 mL of oil at 22° C., or dispersible or emulsifiable therein. The water-soluble multifunctional (meth)acrylate monomer is typically soluble or dispersible in water, typically to the extent of at least 1 gram in 100 mL of water at 22° C.

[0105] Typically, the oil phase is combined with an excess of the aqueous phase. If more than one oil phase is used, they are generally combined first and then combined with the aqueous phase. If desired, the aqueous phase can also contain one or more aqueous phases that are combined in sequence.

[0106] The oil phase can be emulsified in the aqueous phase under high shear agitation to form an oil-in-water emulsion that can contain droplets of the core material dispersed in the aqueous phase. Typically, the amount of shear agitation applied can be controlled to form droplets of a target size, which affects the final size of the finished encapsulation bodies.

[0107] The dissolved or dispersed monomers can be reacted by heating the emulsion or by irradiating it with actinic radiation. The reaction can form a polymer wall at the interface between the droplets and the aqueous phase. The radically polymerizable groups of the multifunctional methacrylates promote the self-polymerization of the multifunctional methacrylates upon heating.

[0108] One or more free radical initiators may be provided in the oil phase, the water phase, or both, preferably both. For example, the process may include adding one or more free radical initiators to the water phase to provide an additional source of free radicals upon activation, for example, by heat. The process may include adding one or more free radical initiators to the oil phase. One or more free radical initiators may be added to the water phase, the oil phase, or both in an amount greater than 0% to about 5% by weight of each phase. Latent initiators are also contemplated where a first action, particularly a chemical reaction, is required to convert the latent initiator to an active initiator, which subsequently initiates polymerization when exposed to polymerization conditions. When multiple initiators are present, it is contemplated and preferred that each initiator is initiated or suitably initiated by different conditions.

[0109] Alternatively, the reacting step may be carried out in the absence of an initiator, as it has surprisingly been found that inclusion bodies can be formed even in the absence of a free radical initiator.

[0110] In the described process, the heating step may include heating the emulsion for about 1 hour to about 20 hours, preferably about 2 hours to about 15 hours, more preferably about 4 hours to about 10 hours, and most preferably about 5 hours to about 7 hours, thereby heating sufficiently to impart a heat amount of about 500 Joules / kg to about 5000 Joules / kg, about 1000 Joules / kg to about 4500 Joules / kg, about 2900 Joules / kg to about 4000 Joules / kg to said emulsion.

[0111] Prior to the heating step, the emulsion may be characterized by a volume weighted median particle size of the emulsion droplets of from about 0.5 microns to about 100 microns, or even from about 1 micron to about 60 microns, or even from 20 to 50 microns, preferably from about 30 microns to about 50 microns, for example, with the objective of forming a population of delivery particles having a volume weighted target size of from about 30 to about 50 microns.

[0112] The benefit agent may be selected as described above and is preferably a fragrance comprising one or more perfume raw materials. The benefit agent may be the major or only component of the oil phase in which the other materials are dissolved or dispersed.

[0113] The partitioning modifier may be selected from the group consisting of isopropyl myristate, vegetable oils, modified vegetable oils, mono-, di-, and triesters of C4 to C24 fatty acids, dodecanophenone, lauryl laurate, methyl behenate, methyl laurate, methyl palmitate, methyl stearate, and mixtures thereof, preferably isopropyl myristate. The partitioning modifier may be provided in an amount such that it constitutes about 5% to about 55% by weight of the core of the delivery particle.

[0114] As noted above, the resulting delivery particles are desirably characterized by a core to polymer wall weight ratio of from 96:4 to about 99.5:0.5. It is also desirably that the resulting delivery particles are characterized by a volume weighted median particle size of from about 30 to about 50 microns.

[0115] As a result of the methods of making the delivery particles provided herein, the delivery particles may be present in an aqueous slurry, for example, the particles may be present in the slurry at a level of about 20% to about 60% by weight of the slurry, preferably about 30% to about 50% by weight. Additional materials such as preservatives, solvents, structurants, or other processing or stabilizing aids may be added to the slurry. The slurry may include one or more perfumes that are different from the one or more perfumes contained in the core of the benefit agent delivery particle (i.e., non-encapsulated perfumes).

[0116] An exemplary synthetic method by which inclusion bodies according to the present disclosure can be formed is further described in Example 1 below.

[0117] Additionally, exemplary processes for producing inclusion body populations having a core-shell ratio of less than 95:5 have been disclosed in the art and can be found, for example, in U.S. Pat. No. 8,759,275 (melamine-formaldehyde walls with cationic coating), U.S. Pat. No. 9,186,642 (polyacrylate walls), and U.S. Patent Application Publication No. 202 / 0181543(A1) (polyacrylate walls), each of which is incorporated herein by reference.

[0118] Supplementary ingredients The consumer product composition of the present composition may include a consumer product adjunct that may provide a benefit in the intended end use of the composition or may be a processing aid and / or a stabilizing aid.

[0119] Suitable consumer product adjuncts may include surfactants, conditioning actives, deposition aids, rheology modifiers or structurants, bleaching systems, stabilizers, builders, chelating agents, dye transfer inhibitors, dispersants, enzymes and enzyme stabilizers, catalytic metal complexes, polymeric dispersants, clays and soil removal / anti-redeposition agents, brighteners, suds suppressors, silicones, hueing agents, aesthetic dyes, additional fragrances and fragrance delivery systems, structural elastomers, carriers, hydrotropes, processing aids, structurants, anti-agglomerating agents, coatings, formaldehyde scavengers, and / or pigments.

[0120] Depending on the intended form, formulation, and / or end use, the compositions of the present disclosure may or may not contain one or more of the following adjunct materials: bleach activators, surfactants, builders, chelating agents, dye transfer inhibitors, dispersants, enzymes and enzyme stabilizers, catalytic metal complexes, polymeric dispersants, clays and soil removal / anti-redeposition agents, brighteners, suds suppressors, dyes, additional fragrances and fragrance delivery systems, structural elastomers, fabric softeners, carriers, hydrotropes, processing aids, structurants, anti-agglomerating agents, coatings, formaldehyde scavengers, and / or pigments.

[0121] The exact nature of these additional components and the concentration of incorporation thereof depend on the physical form of the composition and the nature of the work to be used.However, when one or more adjuvants are present, such one or more adjuvants can be present as detailed below.The following is a non-limiting list of suitable additional adjuvants.

[0122] A surfactant The composition of the present disclosure may include a surfactant. The surfactant may be useful, for example, to provide cleaning benefits. The composition may include a surfactant system, which may include one or more surfactants.

[0123] The compositions of the present disclosure may comprise from about 1% to about 70%, or from about 2% to about 60%, or from about 5% to about 50% of the surfactant system by weight of the composition. Liquid compositions may comprise from about 5% to about 40% of the surfactant system by weight of the composition. Compositions suitable for dense formulations, e.g., dense, liquid, gel, and / or unit dose forms, may comprise from about 25% to about 70%, or from about 30% to about 50% of the surfactant system by weight of the composition.

[0124] The surfactant system may include anionic surfactants, nonionic surfactants, zwitterionic surfactants, cationic surfactants, amphoteric surfactants, or combinations thereof. The surfactant system may include nonionic surfactants such as linear alkyl benzene sulfonates, alkyl ethoxylated sulfates, alkyl sulfates, ethoxylated alcohols, amine oxides, or mixtures thereof. The surfactants may be derived, at least in part, from natural sources, such as natural feedstock alcohols.

[0125] Suitable anionic surfactants may include any conventional anionic surfactant. This may include, for example, sulfate detergent surfactants for alkoxylated and / or non-alkoxylated alkyl sulfate materials, and / or sulfonic acid detergent surfactants, such as alkyl benzene sulfonates. The anionic surfactant may be linear, branched, or a combination thereof. Preferred surfactants include linear alkyl benzene sulfonate (LAS), alkyl ethoxylated sulfate (AES), alkyl sulfate (AS), or mixtures thereof. Other suitable anionic surfactants include branched modified alkyl benzene sulfonate (MLAS), methyl ester sulfonate (MES), sodium lauryl sulfate (SLS), sodium lauryl ether sulfate (SLES), and / or alkyl ethoxylated carboxylate (AEC). The anionic surfactant may be present in acid form, salt form, or mixtures thereof. The anionic surfactants may be partially or totally neutralized, for example, with an alkali metal (eg, sodium) or an amine (eg, monoethanolamine).

[0126] The surfactant system may include a nonionic surfactant. Suitable nonionic surfactants include alkoxylated fatty alcohols, such as ethoxylated fatty alcohols. Other suitable nonionic surfactants include alkoxylated alkylphenols, alkylphenol condensates, mid-chain branched alcohols, mid-chain branched alkyl alkoxylates, alkyl polysaccharides (e.g., alkyl polyglycosides), polyhydroxy fatty acid amides, ether-capped poly(oxyalkylated) alcohol surfactants, and mixtures thereof. The alkoxylate units may be ethyleneoxy units, propyleneoxy units, or mixtures thereof. The nonionic surfactants may be linear, branched (e.g., mid-chain branched), or combinations thereof. Particular nonionic surfactants may include alcohols having an average of about 12 to about 16 carbons and an average of about 3 to about 9 ethoxy groups, such as C12-C14 EO7 nonionic surfactants.

[0127] Suitable zwitterionic surfactants include betaines, including alkyl dimethyl betaines and coco dimethyl amidopropyl betaine, 8 ~C 18 (For example, C 12 ~C 18 ) amine oxides (e.g., C 12 ~ 14 dimethylamine oxide), and / or N-alkyl-N,N-dimethylamino-1-propanesulfonate (wherein the alkyl group is 8 ~C 18 Or C 10 ~C 14 The zwitterionic surfactant may include any conventional zwitterionic surfactant, such as sulfo and hydroxybetaines, such as (which may be

[0128] Depending on the formulation and / or intended end use, the composition may be substantially free of certain surfactants. For example, a liquid fabric enhancing composition, such as a fabric softener, may be substantially free of anionic surfactants, since such surfactants may negatively interact with cationic components.

[0129] b. Conditioning Actives The compositions of the present disclosure may include conditioning actives. Compositions containing conditioning actives may provide benefits related to softness, anti-wrinkle, anti-static, conditioning, anti-stretch, color, and / or appearance.

[0130] The conditioning active may be present at a level of about 1% to about 99% by weight of the composition. The composition may comprise from about 1%, or from about 2%, or from about 3%, to about 99%, or to about 75%, or to about 50%, or to about 40%, or to about 35%, or to about 30%, or to about 25%, or to about 20%, or to about 15%, or to about 10% by weight of the composition. The composition may comprise from about 5% to about 30% conditioning active by weight of the composition.

[0131] Suitable conditioning actives for the compositions of the present disclosure may include quaternary ammonium ester compounds, silicones, non-ester quaternary ammonium compounds, amines, fatty acid esters, sucrose esters, silicones, dispersible polyolefins, polysaccharides, fatty acids, softening or conditioning oils, polymer latexes, or combinations thereof.

[0132] The composition may contain a quaternary ammonium ester compound, a silicone, or a combination of a plurality of pairs thereof, preferably a combination of a plurality of pairs thereof. The total amount of the quaternary ammonium ester compound and the silicone may be about 5% by weight to about 70% by weight, or about 6% by weight to about 50% by weight, or about 7% by weight to about 40% by weight, or about 10% by weight to about 30% by weight, or about 15% by weight to about 25% by weight of the composition. The composition may contain the quaternary ammonium ester compound and the silicone in a weight ratio of about 1:10 to about 10:1, or about 1:5 to about 5:1, or about 1:3 to about 1:3, or about 1:2 to about 2:1, or about 1:1.5 to about 1.5:1, or about 1:1.

[0133] The composition may contain a mixture of different types of conditioning actives. The composition of the present disclosure may contain a particular conditioning active but may be substantially free of other conditioning actives. For example, the composition may be free of quaternary ammonium ester compounds, silicones, or both. The composition may include quaternary ammonium ester compounds but may be substantially free of silicones. The composition may include silicones but may be substantially free of quaternary ammonium ester compounds.

[0134] c. Adhesion aid The composition of the present disclosure may include a deposition aid. The deposition aid may promote deposition of encapsulates, conditioning actives, fragrances, or combinations thereof, and may improve the performance benefits of the composition and / or allow more efficient incorporation of such benefit agents. The composition may include from 0.0001% to 3%, preferably from 0.0005% to 2%, more preferably from 0.001% to 1%, or from about 0.01% to about 0.5%, or from about 0.05% to about 0.3% of the deposition aid by weight of the composition. The deposition aid may be a cationic or amphoteric polymer, preferably a cationic polymer.

[0135] Cationic polymers in general and their preparation methods are well known in the literature. Suitable cationic polymers include quaternary ammonium polymers known as "polyquaternium" polymers, named in the International Nomenclature of Cosmetic Ingredients, such as Polyquaternium-6 (poly(diallyldimethylammonium chloride), Polyquaternium-7 (copolymer of acrylamide and diallyldimethylammonium chloride), Polyquaternium-10 (quaternized hydroxyethylcellulose), Polyquaternium-22 (copolymer of acrylic acid and diallyldimethylammonium chloride).

[0136] The deposition aid may be selected from the group consisting of polyvinylformamide, partially hydroxylated polyvinylformamide, polyvinylamine, polyethyleneimine, ethoxylated polyethyleneimine, polyvinyl alcohol, polyacrylates, and combinations thereof. The cationic polymer may include a cationic acrylate.

[0137] The deposition aid can be added simultaneously with the encapsulates (e.g., simultaneously with the encapsulated benefit agent) or directly / independently into the fabric treatment composition. The weight average molecular weight of the polymer may be 500 Daltons to 5,000,000 Daltons, or 1,000 Daltons to 2,000,000 Daltons, or 2,500 Daltons to 1,500,000 Daltons, as measured by size exclusion chromatography against polyethylene oxide standards using Refractive Index (RI) detection. The weight average molecular weight of the cationic polymer may be 5,000 Daltons to 37,500 Daltons.

[0138] d. Rheology Modifiers / Structuring Agents The compositions of the present disclosure may include rheology modifiers and / or structurants. Rheology modifiers may be used to "thicken" or "thin" the liquid composition to a desired viscosity. Structurants may be used to promote phase stability and / or to suspend or inhibit aggregation of particles in the liquid composition, such as the inclusions described herein.

[0139] Suitable rheology modifiers and / or structurants may include non-polymeric crystalline hydroxyl-functional structurants (including those based on hydrogenated castor oil), polymeric structurants, cellulosic fibers (e.g., microfibrillated cellulose, which may be derived from bacterial, fungal, or vegetable sources, including wood), diamide gelling agents, or combinations thereof.

[0140] The polymeric structurants may be of natural or synthetic origin. Naturally derived polymeric structurants may include hydroxyethylcellulose, hydrophobically modified hydroxyethylcellulose, carboxymethylcellulose, polysaccharide derivatives, and mixtures thereof. Polysaccharide derivatives may include pectin, alginate, arabinogalactan (gum arabic), carrageenan, gellan gum, xanthan gum, guar gum, and mixtures thereof. Synthetic polymeric structurants may include polycarboxylates, polyacrylates, hydrophobically modified ethoxylated urethanes, hydrophobically modified nonionic polyols, and mixtures thereof. Polycarboxylate polymers may include polyacrylates, polymethacrylates, or mixtures thereof. Polyacrylates are polymers that are formed by the synthesis of unsaturated mono- or dicarbonates and (meth)acrylic acid C. 1 -C 30 Copolymers with alkyl esters may also be included. Such copolymers are available from Noveon Inc. under the trade name Carbopol Aqua 30. Another suitable structurant is sold under the trade name Rheovis CDE, available from BASF.

[0141] Manufacturing process of the composition The present disclosure relates to a process for making any of the compositions described herein. The process for making the composition, which may be a consumer product, may include combining the first and second populations of inclusion bodies described herein with the consumer product adjuncts described herein.

[0142] When the inclusion bodies are in one or more forms including a slurry form, a neat inclusion body form, and a spray-dried inclusion body form, preferably a slurry form, the first and second inclusion body populations may be combined with such one or more consumer product adjuncts. The inclusion bodies may be combined with such consumer product adjuncts by methods including mixing and / or spraying. The first and second inclusion body populations may be added to a base composition including the consumer product adjunct.

[0143] The compositions of the present disclosure can be formulated in any suitable form and prepared by any process selected by the formulator. The inclusion bodies and auxiliary materials may be combined in a batch process, a circulation loop process, and / or an in-line mixing process. Suitable equipment for use in the processes disclosed herein may include continuous stirred tank reactors, homogenizers, turbine agitators, recirculation pumps, paddle mixers, plow shear mixers, ribbon blenders, vertical shaft granulators and drum mixers (both batch and, where available, in continuous process configurations), spray dryers, and extruders.

[0144] Method for treating a surface or article The present disclosure further relates to methods of treating surfaces or articles with consumer product compositions according to the present disclosure, which may provide cleaning, conditioning, and / or deodorizing benefits.

[0145] Suitable surfaces or articles can include fabrics (including clothing, towels, or linens), hard surfaces (such as tile, porcelain, linoleum, or wood floors), dishware, hair, skin, or mixtures thereof.

[0146] The method may include contacting a surface or article with a consumer product composition of the present disclosure. The composition may be in neat form or may be diluted with a liquid, such as a cleaning or rinsing liquid. The composition may be diluted with water before, during, or after contacting with the surface or article. The surface or article may be optionally washed and / or rinsed before and / or after the contacting step.

[0147] A method for treating and / or cleaning a surface or article may include the following steps. a) optionally cleaning, rinsing and / or drying the surface or article; b) contacting the surface or article with a consumer product composition described herein, optionally in the presence of water; c) optionally cleaning and / or rinsing the surface or article; and d) Optionally drying by passive drying and / or by active methods such as a washer dryer.

[0148] For purposes of this invention, cleaning includes, but is not limited to, scrubbing and mechanical agitation. Fabrics may include nearly any fabric capable of being washed or treated under standard consumer use conditions.

[0149] The liquid that may contain the disclosed composition may have a pH of about 3 to about 11.5. When diluted, such compositions are typically used at a concentration of about 500 ppm to about 15,000 ppm in solution. When the cleaning solvent is water, the water temperature is typically in the range of about 5° C. to about 90° C., and when the site includes fabric, the water to fabric ratio is typically about 1:1 to about 30:1.

[0150] combination Specifically contemplated combinations of the present disclosure are described herein in the following alphabetical sections, which are exemplary in nature and not intended to be limiting.

[0151] A. A consumer product composition comprising: a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, and the first core material and the first shell material being present in a first core:shell weight ratio of 95:5 or greater; and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, and the second core material and the second shell material being present in a second core:shell weight ratio of less than 95:5. B. A consumer product composition according to paragraph A, wherein the first inclusion of a predetermined particle size is characterized by a first breaking strength and the second inclusion of a predetermined particle size is characterized by a second breaking strength, and the difference between the first breaking strength and the second breaking strength is at least 0.5 MPa, preferably at least 1.0 MPa, more preferably at least 1.5 MPa, even more preferably at least 2.0 MPa, and even more preferably at least 3 MPa. C. A consumer product composition comprising: a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, the first core material and the first shell material being present in a first core:shell weight ratio of 95:5 or greater, the first encapsulates of a given size being characterized by a first breaking strength; and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, the second encapsulates of a given size being characterized by a second breaking strength, wherein the difference between the first breaking strength and the second breaking strength is at least 0.5 MPa, preferably at least 1.0 MPa, more preferably at least 1.5 MPa, even more preferably at least 2.0 MPa, and even more preferably at least 3 MPa. D. The consumer product composition according to any of paragraphs A-C, wherein one of the following is true: the first breaking strength is 75% or less, preferably 10%-75%, more preferably 10%-60%, even more preferably 10%-50% of the second breaking strength; or the first breaking strength is at least 125%, preferably 125%-1000%, more preferably 150%-1000%, even more preferably 250%-1000%, more preferably 200%-1000% of the second breaking strength. E. The consumer product composition according to any of paragraphs A-D, wherein the first breaking strength, the second breaking strength, or both, is from about 0.5 to about 10 MPa, preferably from about 0.5 to about 8 MPa, and more preferably from about 0.5 to about 5 MPa. F. The consumer product composition according to any of paragraphs A-E, wherein the first core:shell weight ratio is at least 96:4, preferably at least 97:3, more preferably at least 98:2. G. The consumer product composition according to any of paragraphs A-F, wherein the second core material and the second shell material are present in a second core:shell weight ratio of less than 92:8, preferably less than 90:10, more preferably less than 88:12. H. A consumer product composition according to any of paragraphs A-G, wherein the first shell material, the second shell material, or both, preferably both, comprise a (meth)acrylate material. I. The consumer product composition according to paragraph H, wherein the (meth)acrylate material is derived, at least in part, from a multifunctional (meth)acrylate monomer or oligomer having at least three radically polymerizable functional groups, with the proviso that at least one, and preferably all, of the radically polymerizable groups is an acrylate or methacrylate. J. The consumer product composition according to any of paragraphs H or I, wherein the (meth)acrylate monomer or oligomer is a monomer selected from the group consisting of a hexafunctional (meth)acrylate, a trifunctional (meth)acrylate, or a mixture thereof, preferably a hexafunctional aromatic acrylate, an isocyanurate triacrylate, or a mixture thereof, more preferably a hexafunctional aromatic urethane acrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, or a mixture thereof. K. The consumer product composition according to any of paragraphs A-J, wherein the first shell material comprises a first (meth)acrylate material, the second shell material comprises a second (meth)acrylate material, and the first (meth)acrylate material is the same as the second (meth)acrylate material. L. The consumer product composition according to any of paragraphs A-J, wherein the first shell material comprises a first (meth)acrylate material and the second shell material comprises a second (meth)acrylate material, and the first (meth)acrylate material and the second (meth)acrylate material are derived from different monomers, different ratios of monomers, or a combination thereof. M. The consumer product composition according to paragraph L, wherein the first (meth)acrylate material is derived at least in part from a hexafunctional (meth)acrylate monomer and the second (meth)acrylate material is derived at least in part from a tri(meth)acrylate monomer. N. The consumer product composition according to any of paragraphs A-J, wherein the first shell material comprises a (meth)acrylate material and the second shell material does not comprise a (meth)acrylate material, preferably the second shell material comprises an aminoplast, a polyurea, or a combination thereof, more preferably, when an aminoplast is present, the aminoplast comprises melamine. O. The consumer product of any preceding claim, wherein the first shell material, preferably a (meth)acrylate polymer, is derived, at least in part, from at least one free radical initiator, preferably the at least one free radical initiator is present in an amount of about 2% to about 50% by weight of the first shell material, preferably about 5% to about 40% by weight, more preferably about 10% to about 40% by weight, even more preferably about 15% to about 40% by weight, even more preferably about 20% to about 35% by weight, or more preferably about 20% to about 30% by weight. P. The consumer product composition of any preceding claim, wherein the predetermined particle size is from 5 microns to 50 microns, preferably from 5 microns to 45 microns, more preferably from 5 microns to 20 microns, more preferably from 10 microns to 20 microns, and most preferably 10 microns, based on particle diameter. Q. The consumer product composition of any preceding claim, wherein a first population of inclusion bodies is characterized by a first volume weighted median particle size and a second population of inclusion bodies is characterized by a second volume weighted median particle size, and wherein the difference between the first volume weighted median particle size and the second volume weighted median particle size is less than 15 microns, or less than 10 microns, or less than 5 microns, or less than 3 microns. R. A consumer product composition according to any of paragraphs A-P, wherein a first population of inclusion bodies is characterized by a first volume weighted median particle size and a second population of inclusion bodies is characterized by a second volume weighted median particle size, and wherein the difference between the first volume weighted median particle size and the second volume weighted median particle size is greater than 5 microns, or greater than 10 microns, or greater than 15 microns, and preferably less than 50 microns. S. A consumer product composition according to any of paragraphs A-R, wherein the first population of inclusion bodies is characterized by a first volume weighted median particle size of about 30 microns to about 50 microns, and preferably the second population of inclusion bodies is characterized by a second volume weighted median particle size that is less than the first volume weighted median particle size, and preferably the second volume weighted median particle size is from about 10 microns to about 30 microns. T. A consumer product composition according to any of paragraphs A-S, wherein the first benefit agent and the second benefit agent are different. U. A consumer product composition according to any of paragraphs A-T, wherein the first benefit agent, the second benefit agent, or both, comprise a perfume raw material, preferably both comprise a perfume raw material, and more preferably comprise different perfume raw materials. V. The first core material, the second core material, or both, further comprise a partitioning modifier, preferably the partitioning modifier being selected from the group consisting of vegetable oil, modified vegetable oil, C 4 ~C 24 A consumer product composition according to any of paragraphs A-U comprising a material selected from the group consisting of mono-, di-, and triesters of fatty acids, propan-2-yl tetradecanoate, isopropyl myristate, dodecanophenone, lauryl laurate, methyl behenate, methyl laurate, methyl palmitate, methyl stearate, and mixtures thereof, more preferably comprising isopropyl myristate. W. The first shell material, the second shell material, or both, further comprise a coating material, preferably the coating material is selected from the group consisting of poly(meth)acrylate, poly(ethylene-maleic anhydride), polyamine, wax, polyvinylpyrrolidone, polyvinylpyrrolidone copolymer, polyvinylpyrrolidone-ethyl acrylate, polyvinylpyrrolidone-vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone / vinyl acetate, polyvinyl acetal, polyvinyl butyral, polysiloxane, poly(propylene maleic anhydride), maleic anhydride derivatives, copolymers of maleic anhydride derivatives, polyvinyl alcohol, styrene-butadiene latex, gelatin, gum arabic, carboxymethyl cellulose. cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, other modified celluloses, sodium alginate, chitosan, casein, pectin, modified starch, polyvinyl acetal, polyvinyl butyral, polyvinyl methyl ether / maleic anhydride, polyvinylpyrrolidone and copolymers thereof, poly(vinylpyrrolidone / methacrylamidopropyltrimethylammonium chloride), polyvinylpyrrolidone / vinyl acetate, polyvinylpyrrolidone / dimethylaminoethyl methacrylate, polyvinylamine, polyvinyl formamide, polyallylamine, copolymers of polyvinylamine, and mixtures thereof. X. A consumer product composition according to any of paragraphs A-W, wherein the composition further comprises a processing aid, preferably the processing aid is selected from the group consisting of surfactants, conditioning actives, deposition aids, rheology modifiers or structurants, bleaching systems, stabilizers, builders, chelating agents, dye transfer inhibitors, dispersants, enzymes, enzyme stabilizers, catalytic metal complexes, polymeric dispersants, mud and soil removal / anti-redeposition agents, brighteners, suds suppressors, silicones, hueing agents, aesthetic dyes, undiluted fragrance, additional fragrance delivery systems, structural elastomers, carriers, hydrotropes, processing aids, anti-agglomerating agents, coatings, formaldehyde scavengers, pigments, and mixtures thereof. Y. A consumer product composition according to any of paragraphs A-X, wherein the composition is a laundry detergent composition, a fabric conditioning composition, a laundry additive, a fabric pretreatment composition, a fabric refresher composition, or a mixture thereof. Z. A consumer product composition according to any of paragraphs A-Y, wherein the composition is in the form of a liquid composition, a granular composition, a hydrocolloid, a single compartment pouch, a multi-compartment pouch, a dissolvable sheet, pastilles or beads, a fibrous article, a tablet, a stick, a bar, a flake, a foam / mousse, a nonwoven sheet, or a mixture thereof. AA. A consumer product composition comprising a first population of first encapsulates having a first core material surrounded by a first shell material, the first core material comprising a first benefit agent, and the first wall material being at least partially derived from a hexafunctional (meth)acrylate monomer; and a second population of second encapsulates having a second core material surrounded by a second shell material, the second core material comprising a second benefit agent, and the second wall material being at least partially derived from a trifunctional (meth)acrylate monomer, wherein the first and second populations of encapsulates are each independently characterized by a volume weighted median particle size of from about 10 um to about 50 um. BB. The consumer product composition according to paragraph AA, wherein the first core material and the first shell material are present in a first core:shell weight ratio and the second core material and the second shell material are present in a second core:shell weight ratio, the first core:shell weight ratio being greater than the second core:shell weight ratio, preferably the first core:shell weight ratio being greater than 90:10, more preferably greater than 95:5. CC. A method of treating a surface, the method comprising contacting the surface with a consumer product composition according to any of paragraphs A-BB, optionally in the presence of water.

[0152] Test Method It will be understood that the values ​​of each of the parameters of the inventive subject matter claimed and described herein should be determined using the test methods disclosed in the Test Methods section of this application.

[0153] Extraction of delivery particles from the final product. As used herein, unless otherwise indicated, the preferred method for isolating delivery particles from the final product is based on the fact that the density of the majority of such delivery particles is different from the density of water. The final product is mixed with water to dilute and / or release the delivery particles. The diluted product suspension is centrifuged to accelerate the separation of the delivery particles. Such delivery particles tend to float or sink in the dilute solution / dispersion of the final product. A pipette or spatula is used to remove the top and bottom layers of this suspension, which is then subjected to further rounds of dilution and centrifugation to separate and enrich the delivery particles. The delivery particles are observed using an optical microscope equipped with cross-polarization filters or differential interference contrast (DIC) at a total magnification of 100x to 400x. Microscopic observation provides an early indication of the presence, size, and aggregation of delivery particles.

[0154] To extract the delivery particles from the liquid fabric enhancer, the final product undergoes the following steps: 1. Place three approximately 20 mL aliquots of the liquid fabric enhancer into three separate 50 mL centrifuge tubes, dilute each with aliquot:deionized water = 1:1 (e.g., 20 mL fabric enhancer + 20 mL deionized water), mix each aliquot well, and centrifuge each aliquot for 30 minutes at approximately 10,000 x g. 2. After centrifugation in step 1, discard the bottom aqueous layer (approximately 10 mL) in each 50 mL centrifuge tube, then add 10 mL of deionized water to each 50 mL centrifuge tube. 3. Repeat the process of centrifugation, removal of the bottom aqueous layer, and then adding 10 mL of deionized water to each 50 mL centrifuge tube two more times for each aliquot. 4. Remove the top layer with a spatula or pipette. 5. Transfer this top layer to a 1.8 mL centrifuge tube and centrifuge at approximately 20,000 x g for 5 minutes. 6. Remove the top layer with a spatula and transfer to a new 1.8 mL centrifuge tube, add deionized water until the tube is completely filled, then centrifuge at approximately 20,000 x g for 5 minutes. 7. Remove the bottom layer with a fine pipette and add deionized water until the tube is completely filled and centrifuge at approximately 20,000 x g for 5 minutes. 8. Repeat step 7 five more times (for a total of six).

[0155] If both the top and bottom layers appear to be rich in delivery particles in step 1 above, proceed immediately to step 3 (i.e., skip step 2) and proceed with steps 4-8. Once those steps are completed, also remove the bottom layer from the 50 mL centrifuge tube from step 1 using a spatula and / or pipette. Transfer the bottom layer to a 1.8 mL centrifuge tube and centrifuge at about 20,000 x g for 5 minutes. Remove the bottom layer in the new tube and add deionized water until the tube is completely filled, then centrifuge at about 20,000 x g for 5 minutes. Remove the top layer (water) and add deionized water until the tube is filled again. Repeat this 5 more times (6 times in total). Combine the isolated top and bottom layers, rich in delivery particles, again.

[0156] If the fabric enhancer is white or the delivery particle-rich layer is difficult to distinguish, add 4 drops of a dye (such as Liquitint Blue JH 5% premix from Milliken & Company, Spartanburg, South Carolina, USA) to the centrifuge tube from step 1 and proceed with isolation as described.

[0157] To extract delivery particles from solid end products that disperse easily in water, 1 L of deionized water is mixed with 20 g of the end product (e.g., detergent foams, films, gels, and granules; or water-soluble polymers; soap flakes and bars, and other matrices that dissolve easily in water, such as salts, sugars, clays, and starches). When extracting delivery particles from end products that do not disperse easily in water, such as waxes, dryer sheets, dryer bars, and greasy materials, it may be necessary to add detergent to the product and dilution liquid, stir, and / or gently heat to release the delivery particles from the matrix. The use of organic solvents or drying of the delivery particles during the extraction step should be avoided, as these operations may damage the delivery particles during this stage.

[0158] For extraction of delivery particles from liquid end products that are not fabric softeners or fabric enhancers (e.g., liquid laundry detergents, liquid dishwashing detergents, liquid hand soaps, lotions, shampoos, conditioners, and hair dyes), 20 mL of the end product is mixed with 20 mL of deionized water. NaCl (e.g., 1-4 g NaCl) may be added to the diluted suspension, if necessary, to increase the density of the solution and promote floating of the delivery particles to the top layer. If the product has a white color that makes it difficult to distinguish the layers of delivery particles formed during centrifugation, a water-soluble dye may be added to the diluent to provide visual contrast.

[0159] The water and product mixture is subjected to successive rounds of centrifugation involving removal of the top and bottom layers and resuspension of those layers in fresh diluent, followed by further centrifugation, isolation, and resuspension. Each round of centrifugation is performed in tubes of 1.5-50 mL volume using a centrifugal force of up to 20,000 x g for 5-30 minutes. At least six rounds of centrifugation are typically required to extract and purify sufficient delivery particles for testing. For example, the first round of centrifugation may be performed in a 50 mL tube spun at 10,000 x g for 30 minutes, followed by five further rounds of centrifugation, in which material from the top and bottom layers are separately resuspended in fresh diluent in 1.8 mL tubes and spun at 20,000 x g for 5 minutes per round.

[0160] If delivered particles are observed microscopically in both the top and bottom layers, the delivered particles from these two layers are recombined after a final centrifugation step to create a single sample containing all of the delivered particles extracted from the product. The extracted delivered particles should be analyzed as soon as possible, but may be stored as a deionized water suspension for up to 14 days before analysis.

[0161] Those skilled in the art will recognize that various other procedures may be developed for extracting and isolating the delivery particles from the final product, and will recognize that such methods require validation via comparison of measurements taken before and after adding and extracting the delivery particles from the final product.

[0162] Beneficial Agent Leakage The amount of benefit agent leakage from the delivery particles is determined according to the following method: a.) Obtain two samples of delivery particle raw material slurry in an amount such that 1 g (or amount otherwise indicated) of encapsulated flavor (e.g., 1 g of flavor oil not including shell and / or partitioning modifier, if present) is present in each sample. b.) One sample of the raw delivery particle slurry is added to a suitable amount of the product matrix in which the delivery particles will be used (e.g., liquid detergent product or LFE product) to form a total of 100 g (e.g., 5 g of slurry and 95 g of product matrix) and label the mixture as Sample 1. In step d below, a second sample of the raw delivery particle slurry is used immediately in its undiluted form without contacting the product matrix and labelled as Sample 2. c.) Age the delivery particle-containing product matrix (Sample 1) in a sealed glass jar at 35° C. for 1 week (or other time and / or temperature as otherwise indicated). d.) Filtration is used to recover the delivery particles from both samples. After the aging step, the delivery particles in Sample 1 (in the product matrix) are recovered. At the same time that the aging step is started for Sample 1, the delivery particles in Sample 2 (undiluted raw material slurry) are recovered. e.) Treating the recovered delivery particles with a solvent to extract the benefit agent material from the delivery particles. f.) The solvent containing the extracted benefit agent from each sample is analyzed by chromatography. The resulting benefit agent peak areas under the curve are integrated and these areas are summed to determine the total amount of benefit agent extracted from each sample. g.) Determine the percentage of benefit agent leakage by calculating the difference between the value obtained for the total amount of benefit agent extracted from Sample 2 minus the value from Sample 1, and express it as a percentage of the total amount of benefit agent extracted from Sample 2, which is represented by the following equation:

[0163]

number

[0164] viscosity The viscosity of the final liquid product is measured using an AR550 rheometer / viscometer from TA instruments (New Castle, DE, USA) using parallel steel plates with a diameter of 40 mm and a gap size of 500 μm. -1 High shear viscosity at 0.05 sec -1The low shear viscosity at 21°C for 3 minutes is 0.01 s -1 ~25 seconds -1 is obtained from a logarithmic shear rate sweep.

[0165] Fragrances, Fragrance Raw Materials (PRMs), and / or Partitioning Modifiers A. Identity and Amount Gas Chromatography with Mass Spectroscopy / Flame Ionization Detector (GC-MS / FID) is used to identify and quantify the total weight of perfume, perfume ingredient, or perfume raw material (PRM) or partition modifier encapsulated in capsule slurry and / or delivery agent encapsulation.Suitable equipment includes Agilent Technologies G1530A GC / FID; Hewlett Packer Mass Selective Device 5973, and 5%-phenyl-methylpolysiloxane column J&W DB-5 (length 30m x inner diameter 0.25mm x film thickness 0.25μm).Weigh out about 3g of the final product or suspension of delivery encapsulation, record its weight, and then dilute the sample with 30mL of deionized water and filter through 5.0μm pore size nitrocellulose filter membrane. The material captured on the filter is solubilized with 5 mL of ISTD solution (25.0 mg / L tetradecane in absolute alcohol) and heated at 60° C. for 30 minutes. The cooled solution is filtered through a 0.45 μm pore size PTFE syringe filter and analyzed via GC-MS / FID. Three known perfume oils are used as comparative reference materials. Data analysis involves subtracting and summing the ISTD area counts from the total area counts and calculating the average response factor (RF) of the three standard fragrances. The response factor and total area counts of the fragrance encapsulated in the product are then used along with the weight of the sample to determine the total weight percent of each PRM in the encapsulated fragrance. The PRMs are identified from the mass spectrometry peaks.

[0166] B. Amount of unencapsulated material To determine the amount of unencapsulated flavor and (optional) partitioning modifying material in a composition such as a slurry, the following equipment can be used for this analysis, using the analytical procedures provided after the tables.

[0167] [Table 1]

[0168] To prepare the fragrance standard in ISS Hexane, weigh 0.050±0.005g of the desired PMC fragrance oil into a 50mL volumetric flask (or other volume size recalculating the grams of fragrance oil to add). Fill to the line with the ISS Hexane solution from above. ISS Hexane is 0.1g of tetradecane in 4 liters of hexane.

[0169] To prepare a 5% surfactant solution, weigh 50 g ± 1 g of sodium dodecyl sulfate into a beaker and quantitatively transfer to a 1 liter volumetric flask using purified water, ensuring the surfactant is completely dissolved.

[0170] To prepare a sample of the PMC composition (e.g., slurry), ensure that the composition (e.g., slurry) is mixed thoroughly. Mix if necessary. Weigh 0.3±0.05 g of the composition sample into the bottom of a 10 mL vial. Avoid sticking the composition to the walls of the vial.

[0171] To operate the instrument, the target ion for quantification of each PRM (and optionally partition modifier) ​​is determined, along with a minimum of one, preferably two confirmatory ions. A calibration curve is generated from the fragrance standards for each PRM. Using the sample weight and the individual PRM weight percentages, the integrals of the extracted ions (EICs) and their amounts for each PRM are plotted or recorded.

[0172] The amount of free oil is determined from the response of each PRM to the calibration curve and summed across all the different perfume materials and optional partitioning modifiers.

[0173] C. Determination of Encapsulated Material The determination of the encapsulated oil and optional partitioning modifier is made by subtracting the weight of the free / unencapsulated oil found in the composition from the total weight of oil found in the composition (e.g., slurry).

[0174] Determined by analysis of wall material This method determines the amount of wall material. First, the wall material of particles having a size greater than 0.45 micrometers is isolated by dead-end filtration. Subsequent analysis by thermogravimetric analysis allows the exclusion of inorganic materials and other (organic) raw material slurry components.

[0175] A. Sample Preparation This procedure applies dead-end filtration to exclude the soluble fraction of the sample. Different solvents are used sequentially to maximize the removal of interfering substances before Thermo Gravimetric Analysis, TGA analysis.

[0176] The following materials and / or equipment are used: ●Filtration device Vacuum Pump: Millipore Model WP6122050 or equivalent. o Thick walled vacuum tubing to connect the pump to the filtration device. ○Filtration flask 500 or 1000 mL. Filtration Cup: e.g., 250 mL Millipore Filtration Funnel ("Milli Cup"), filtration material: 0.45 micrometer membrane, solvent resistant. A sealable plastic container to house the filtration device while weighing. ○Standard laboratory glassware (glass beakers 100-250mL, graduated cylinders 50-250mL). ●Drying equipment ○Vacuum oven and vacuum pump (setting 60-70℃ / vacuum: 30 inch mercury vacuum). Desiccator or constant humidity chamber (keeps residue in a controlled environment while cooling) Solvent All solvents: analytical grade Min: 2-propanol, acetone, chloroform

[0177] The filtration procedure is as follows: To prepare the filtration device, record the weight of a filtration device (e.g., Milli cup filter) that has been pre-dried to 0.1-0.2 mg. Pre-drying involves the same drying step that is performed on the filter after filtration is completed.

[0178] Filter the sample by weighing 1-2 grams of slurry raw material (note weight to the nearest 0.1-0.2 mg) into a glass beaker (250 mL) or directly into the filtration apparatus. Add 20 mL of deionized water and swirl to homogenize the sample. Add 80 mL of isopropyl alcohol to homogenize the sample with the solvent. Use heat to flocculate the sample. Place the filtration apparatus onto the filtration bottle and begin filtration with vacuum. After filtration is complete, add 100 mL of chloroform. Continue filtration. Add 10-20 mL of acetone and filter through the membrane to remove traces of chloroform. Remove the filter from the filtration system and dry in a vacuum oven. After cooling, weigh the filter and record the weight.

[0179] Calculate percent residue (weight residue) by dividing the weight difference between filter + residue and filter weight only (=net weight of residue after filtration) by the raw slurry sample weight and multiply this by 100 to get in %. Continue to determine % residue by TGA analysis.

[0180] Thermogravimetric analysis (TGA) is performed using the following equipment and settings: TGA: TA instruments Discovery TGA; Pan: Sealed aluminum; Purge: N2 at 50 mL / min; Procedure: Ramp to 500°C at 10°C / min. The TGA is coupled to a Nicolet Nexus 470 FTIR spectrometer for evolved gases.

[0181] In the TGA data analysis, the weight loss between 350 and 500°C is due to the decomposition of the polymer wall material of the perfume microcapsules and the still remaining (burned) perfume compounds. This weight loss is used for the calculation of the insoluble polymer fraction. At 500°C, there is still a residue of unburned material, which should be taken into account when calculating the insoluble polymer fraction.

[0182] Analytical determination of core:wall ratio If the amounts of core and wall material input are not readily available, the core:wall ratio of the inclusion bodies can be determined analytically using the methods described herein.

[0183] More specifically, the above method allows one to determine the amount (by weight) of flavor, partition modifier, and wall material in a flavor capsule composition (e.g., slurry), which can be used to calculate the core:wall ratio by dividing the total amount (by weight) of flavor + partition modifier found in the composition by the amount (by weight) of crosslinked wall material found in the composition.

[0184] Test Methods for Determining logP The logarithm of the octanol / water partition coefficient (logP) is calculated for each PRM in the fragrance mixture being tested. The logP values ​​of the individual PRMs are calculated using the Consensus logP Computational Model, version 14.02 (Linux®), available from Advanced Chemistry Development Inc. (ACD / Lab), Toronto, Canada, which results in unitless logP values. The ACD / Labs Consensus logP Computational Model is part of the ACD / Labs model suite.

[0185] Volume-weighted particle size and size distribution Volume-weighted capsule size distribution is determined by single-particle optical sensing (SPOS), also called optical particle counting (OPC), using an AccuSizer 780 AD instrument and accompanying software CW788 version 1.82 (Particle Sizing Systems, Santa Barbara, California, USA) or equivalent. The instrument is configured with the following conditions and options: flow rate = 1 mL / sec, small diameter threshold = 0.50 μm, sensor model number = LE400-05 or equivalent, autodilution = on, collection time: 60 seconds, number of channels = 512, reservoir fluid volume = 50 ml, maximum coincidence count = 9200. The measurement is initiated by cold-conditioning the sensor by flushing with water until the background count is less than 100. A sample of the delivery capsules in suspension is introduced and the capsule density is adjusted, if necessary, via automatic dilution with deionized water to ensure a capsule count of at least 9200 per mL. The suspension is analyzed for 60 seconds. The resulting volume-weighted PSD data is plotted and recorded, and the desired volume-weighted particle size values ​​(e.g., median / 50th percentile, 5th percentile, and / or 90th percentile) are determined.

[0186] The broadness index can be calculated by determining the delivered particle size beyond which 90% of the cumulative particle volume is exceeded (90% size), the particle size beyond which 5% of the cumulative particle volume is exceeded (5% size), and the median volume-weighted particle size (50% size - both the particle volume above this size and below this size are 50% of the particle volume). Broadness index = ((90% size)-(5% size)) / 50% size.

[0187] Breaking Strength Test Method To measure the average breaking strength for a population and / or to determine the delta breaking strength, three different measurements are taken: i) the volume-weighted capsule size distribution, ii) the diameter of 10 individual capsules within each of the three specified size ranges (and / or 30 individual capsules at the median volume-weighted particle size if the average breaking strength is to be determined), and iii) the burst force of those same 30 individual capsules.

[0188] a.) The volume-weighted capsule size distribution is determined as described above. The resulting volume-weighted PSD data is plotted and recorded, and the median, 5th percentile, and 90th percentile values ​​are determined. b.) The diameter and rupture force value (also known as burst force value) of individual capsules are measured via a computer controlled micromanipulation instrument system having a lens and camera capable of imaging the delivery capsule and having a fine flat-ended probe connected to a force transducer (e.g., Model 403A available from Aurora Scientific Inc. (Canada)) or equivalent, as described in Zhang, Z. et al. (1999) "Mechanical strength of single microcapsules determined by a novel micromanipulation technique." J. Microencapsulation, vol 16, no. 1, pages 117-124, and Sun, G. and Zhang, Z. (2001) "Mechanical Properties of Melamine-Formaldehyde microcapsules." J. Microencapsulation, vol 18, no. 5, pages 593-602, and available at the University of Birmingham, Edgbaston, Birmingham, UK. c) The delivery capsule suspension is placed as a drop onto a microscope slide and dried under ambient conditions for several minutes to remove water and obtain a single layer of low density, isolated capsules on the dry slide. The concentration of capsules in the suspension is adjusted as necessary to obtain a suitable capsule density on the slide. There may be cases where more than one slide preparation is required. d) The slide is then placed on the sample holding stage of the micromanipulation instrument. Thirty benefit agent delivery capsules on the slide are selected for measurement such that there are 10 capsules selected in each of three predefined size ranges. Each size range refers to the capsule diameter derived from the volume weighted PSD generated by the Accusizer. The three size ranges of capsules are median / 50th percentile diameter ±2 μm, 5th percentile diameter ±2 μm, and 90th percentile diameter ±2 μm. Capsules that appear to be shrunk, leaking, or damaged are excluded from the selection process and are not measured. i. If sufficient capsules are not available in a particular size range of ±2 μm, the size range may be increased to ±5 μm. ii. When the mean breaking strength for a population is to be determined, 30 capsules in the median / 50th percentile size range can be measured. e.) For each of the 30 selected capsules, the capsule diameter is measured from the image on the micromanipulation instrument and recorded. The same capsule is then compressed between two flat surfaces, a flat-ended force probe and a microscope slide, at a rate of 2 μm / sec, causing the capsule to rupture. During the compression step, the force of the probe is continuously measured and recorded by the data acquisition system of the micromanipulation instrument. f.) The cross-sectional area is calculated using the measured diameter of the spherical capsule (πr 2, r is the radius of the capsule before compression). The burst force is determined from the recorded force probe measurements for each selected capsule as shown in Zhang, Z. et al. (1999) "Mechanical strength of single microcapsules determined by a novel micromanipulation technique." J. Microencapsulation, vol 16, no. 1, pp. 117-124, and Sun, G. and Zhang, Z. (2001) "Mechanical Properties of Melamine-Formaldehyde microcapsules." J. Microencapsulation, vol 18, no. 5, pp. 593-602. g.) The breaking strength of each of the 30 capsules is calculated by dividing the burst force (in Newtons) by the calculated cross-sectional area of ​​each capsule. h.) Calculation: The mean breaking strength for a population is determined by averaging the breaking strength values ​​of (at least) 30 capsules in the median / 50th percentile size range.

[0189] The delta fracture strength is calculated as follows:

[0190]

number

[0191] The examples provided below are intended to be illustrative and not limiting in nature.

[0192] Example 1. Exemplary synthesis of a first population of inclusion bodies An exemplary synthesis process for an inclusion body population with a core:wall ratio of approximately 98:2 is provided below. Details of the materials used are provided in Table 1, as are alternative wall monomers.

[0193] In a 1L water-jacketed stainless steel reactor, 143.12 grams of perfume oil and 137.45 grams of isopropyl myristate are added and mixed under nitrogen using a high shear mixer equipped with a mill blade. After the solution is heated to 35°C, 0.33 grams of Vazo67 (initiator) is introduced, followed by heating the entire mixture to 70°C and maintaining at that temperature for 45 minutes, after which the system is cooled to 50°C. Once this temperature is reached, a separately prepared solution containing 63.05 grams of perfume oil, 0.075 grams of CD9055, 0.075 grams of TBAEMA, and 6.23 grams of CN975 is introduced into the reactor, and the entire mixture is mixed at 50°C for 10 minutes. Agitation is then stopped and an aqueous phase consisting of 107 grams of emulsifier (PVOH540, 5% solution), 340.03 grams of RO water, 0.22 grams of V-501, and 0.21 grams of NaOH (21% solution) is then added to the reactor. After the aqueous phase is added, milling is performed until particle size is reached. The emulsion is then first heated to 75°C and maintained at that temperature for 240 minutes, then heated to 95°C for 360 minutes, and then cooled to 25°C. At that point, the slurry is discharged from the reactor into a vessel and a rheology modifier (xanthan gum, 1.59 grams) and a preservative (Acticide BWS-10, 0.61 grams) are added. The rheology modifier is mixed for 30 minutes. The preservative is added last and mixed for 5 to 10 minutes. The completed slurry is then characterized and tested as deemed acceptable.

[0194] Alternate capsules can be made following a substantially similar process by replacing the CN975 monomer with a multifunctional acrylate monomer (e.g., EB140, SR295, SR444, TMPTA-1, SR368, or EB895) found in Table 1 below.

[0195] Core:Wall Weight Ratio - Sample Calculation The core:wall weight ratio is determined by dividing the weight of all core material inputs (e.g., perfume oils and partitioning modifiers) by the weight of all wall material inputs (e.g., wall monomers and initiators). Alternatively, the relative percentage of core material in a particle population can be determined by dividing the weight of all core material inputs by the sum of the total weight of core material inputs and the total weight of wall material inputs, and multiplying by 100, and the remaining percentage (100-% core) is the relative percentage of wall material, and these numbers can be expressed as a ratio. Similarly, the relative percentage of wall material in a particle population can be determined by dividing the total weight of wall material inputs by the sum of the weight of all core material inputs and all wall material inputs, and multiplying by 100.

[0196] Provided below are sample calculations for "98:2" capsules formed according to the examples of this section, where the core comprises flavor oil and a partitioning modifier (isopropyl myristate), and the wall comprises wall monomers (CN975, CD9055, and TBAEMA) and initiators (Vazo67 and V-501).

[0197]

number

[0198] [Table 2]

[0199] Example 2. Puncture Strength Data for Exemplary Inclusion Body Populations An exemplary population of perfume encapsulates was made substantially according to the synthetic procedure of Example 1 above, where the walls are made primarily of CN975 acrylate monomer. The differences in the populations are provided in Table 2A below.

[0200] Examples 1A and 1B are labeled as comparative examples because they include examples that feature core:shell ratios that do not match those of the first inclusion body population described and claimed herein. However, any can function as the second inclusion body population. The amount of initiator is provided as a percentage of the total wall material (e.g., monomer + initiator).

[0201] [Table 3] a Initiator 1 = 2,2'-azobis(2-methylbutyronitrile) / CAS number: 13472-08-7 b Initiator 2 = 4,4'-azobis(4-cyanovaleric acid) / CAS number: 2638-94-0

[0202] The inclusion body populations of Examples 1A, 1B, and 2-12 are analyzed for volume-weighted inclusion body size at various points (5%, 50%, and 90%) of the size distribution, and the fracture strength at each point is determined. From this data, the Broadness Index and Delta Fracture Strength are determined according to the test methods provided above. The results are provided in Table 2B.

[0203] [Table 4]

[0204] Figure 1 shows a graph of some examples from Tables 2A and 2B above, where the inclusion body size at d5, d50, and d90 are graphed against their respective breaking strengths. As shown in the graph of Figure 1 and Table 2B above, Comparative Example 1A shows a J-shaped curve, with the breaking strength at d5 being relatively higher than the breaking strengths at d50 and d90. Meanwhile, Examples 2, 4, and 10 according to the present disclosure show relatively flat curves compared to Comparative Example 1A. When two populations of inclusion bodies with different breaking strength profiles are selected, especially when at least one of them is characterized by a core:shell ratio of 95:5 or more, improved consumer products can be formulated.

[0205] For example, as shown in the graph of Figure 1, the 10 micron capsules of Example 2 (e.g., first population) are expected to have a different fracture strength than the 10 micron capsules of Example 1A (e.g., second population), which may result in preferred perfume release across a range of touch points.

[0206] Another comparison in Table 2B shows that the encapsulation bodies of Example 1B and Example 11 have similar median particle size (36.1 vs. 39.4 microns) and the same particle size at d5 (9.2 microns). However, the populations have different core:wall ratios (90:10 vs. 98:2). This difference leads to different breaking strengths at d5 (6.2 MPa vs. 1.4 MPa) for particles that are roughly the same size, resulting in an absolute difference of 4.8 MPa. Furthermore, the breaking strength at 9.2 microns of the particles of Example 1B is 400% greater than that of the particles of Example 11. Due to these different breaking strengths for particles of the same size, it is believed that the products formulated with these two populations have a positive perfume release profile across several touch points.

[0207] Example 3. Comparison of double inclusion populations (1) The following examples compare liquid fabric enhancer compositions, each containing two populations of perfume encapsulates. The shell materials of the various encapsulate populations are substantially the same (acrylate-based shells--mainly CN975 monomers, e.g., Sartomer), but are present at different core:shell weight ratios, as shown in Table 3A. Furthermore, the first encapsulate population of Formulations 2 and 3 has a lower perfume content and a slightly different perfume formulation (e.g., some perfume raw materials are omitted) compared to the perfume of the first encapsulate population of Comparative Formulation 1.

[0208] The inclusion body population is described in more detail in Table 3A. The "perfume delivered" provided in Table 3A is the amount of perfume delivered by the inclusion body population by weight of the final product composition.

[0209] [Table 5]

[0210] Formulations 1, 2, and 3 are used in the laundry process to treat fabric swatches. After treating the fabric, a professional perfumer performs an olfactory evaluation of the perfume intensity at WET, DRY, and RUB touch points, and the scores at each touch point are averaged to obtain a score for that touch point. The scores are based on a perfume odor intensity scale of 0 to 100, where 0=no perfume odor, 25=slight perfume odor, 50=moderate perfume odor, 75=strong perfume odor, and 100=extremely strong perfume odor. The results are provided in Table 3B. Formulation 1, a comparative example, is used as a reference. Asterix ( * ) are statistically significant relative to the reference value in the same column.

[0211] [Table 6]

[0212] As shown in Table 5B, Formulations 2 and 3 perform significantly better than Comparative Formulation 1 at two or more touch points while delivering relatively less perfume.

[0213] Example 4. Comparison of double inclusion populations (2) The following examples compare liquid fabric enhancer compositions, each containing two populations of perfume encapsulates. In addition to the main shell material differences listed in Table 4A, the first encapsulate population of Formulation 2 has a lower perfume content and a slightly different perfume formulation (e.g., some perfume raw materials are omitted).

[0214] [Table 7] 1 MF = melamine formaldehyde, inclusion bodies from Encapsys, LLC (Appleton, WI) 2 Acrylate = CN975 Monomer (e.g., Sartomer)

[0215] Formulations 1 and 2 were used in the laundry process, and the treated fabrics were tested for Wet Fabric Odor (WET), Room Bloom at time 0 (RB-0h), and Room Bloom after 1 hour (RB-1h) according to the scoring method provided in Example 3. The results are provided in Table 4B. Formulation 1, which is a comparative example, is used as a reference. Asterix ( * ) are statistically significant relative to the reference value in the same column.

[0216] [Table 8]

[0217] As shown in Table 4B, Formulation 2 performs significantly better than Comparative Formulation 1 at both Room Bloom touchpoints (and directionally better for Wet Fabric Odor) while delivering relatively less perfume.

[0218] Example 5. Advantages of double inclusion populations In this example, various combinations of acrylate-based perfume encapsulants are applied to liquid fabric enhancer products and tested for freshness performance. Capsule populations are listed in Table 5A. The particle sizes provided in Table 5A are the target volume weighted median particle sizes for the populations.

[0219] [Table 9] 1 Partition modifier = isopropyl myristate 2 CN975 = hexafunctional aromatic urethane acrylate ester (e.g., Sartomer Company, Exton, PA) 3 SR368 = Tris(2-hydroxyethyl)isocyanurate triacrylate with aliphatic urethane acrylate (e.g., Sartomer Company, Exton, PA)

[0220] For each leg of the test, one or more populations are provided to the base liquid fabric enhancer composition (having 7 wt.% ester quat as the softening active) in an amount to provide an equal level (0.2 wt.%) of perfume to the final product. For test legs (e.g., legs 2-6) in which two populations of inclusions are provided to a single product, the inclusions are provided in an amount such that each population contributes 0.1 wt.% of perfume each (50:50 weight ratio).

[0221] Fabric (cotton terry swatches) are treated with a wash cycle (short cotton cycle in an automatic washing machine (1200 rpm)) and the fabric strengthener is added during the final rinse cycle.

[0222] After the fabrics are treated, an expert perfumer performs an olfactory assessment of the perfume intensity at RUB, DRY, and WET touch points and averages the scores. The scores are based on a perfume odor intensity scale of 0-100, where 0=no perfume odor, 25=slight perfume odor, 50=moderate perfume odor, 75=strong perfume odor, and 100=very strong perfume odor. In addition, an average olfactory score for a given leg across the three touch points is provided ("touch point average"). Additionally, a GCMS instrument is used to collect headspace data above the treated fabrics at each touch point. The results are provided in Table 5B (olfactory scores) and Table 5C (headspace data).

[0223] Legs 1 and 5 are comparative examples, for example, the test compositions do not contain an inclusion body population having a preferred core:wall weight ratio (eg, 95:5 or greater) in accordance with the present disclosure.

[0224] [Table 10] * Comparative Example

[0225] [Table 11] * Comparative Example

[0226] As shown by the data in Tables 5B and 5C, fabric enhancer products comprising first and second inclusion populations (at least one population comprising inclusions characterized by a core:shell weight ratio of at least 95:5) (e.g., inclusion populations B and C illustrated in legs 2, 3, 4, and 6) typically perform better than those having comparative inclusion populations with similar perfume systems and levels, especially in the RUB and DRY touchpoints. Compare, for example, comparative leg 1 with legs 2, 3, and 4. Also compare, for example, comparative leg 5 with leg 6.

[0227] Example 6. Exemplary Formulations - Liquid Fabric Enhancers Table 6 shows exemplary formulations of compositions according to the present disclosure. Specifically, the following compositions are liquid fabric enhancer products:

[0228] [Table 12] 1 Ester Quat 1: A mixture of bis-(2-hydroxypropyl)-dimethylammonium methylsulfate fatty acid esters, (2-hydroxypropyl)-(1-methyl-2-hydroxyethyl)-dimethylammonium methylsulfate fatty acid esters, and bis-(1-methyl-2-hydroxyethyl)-dimethylammonium methylsulfate fatty acid esters, where the fatty acid esters are made from a C12-C18 fatty acid mixture (REWOQUAT DIP V 20 M Conc, e.g., Evonik). 2 Ester Quat 2: N,N-bis(hydroxyethyl)-N,N-dimethylammonium chloride fatty acid ester (REWOQUAT CI-DEEDMAC, e.g., Evonik), produced from a mixture of C12 to C18 fatty acids 3 Ester Quat 3: Esterification product of (C16-18 and C18 unsaturated) fatty acids with triethanolamine, quaternized with dimethyl sulfate (REWOQUAT WE 18, e.g., Evonik) * A delivery particle according to the present disclosure, for example, inclusion body population B disclosed in Table 5B above. The "% Active" provided is the amount of fragrance delivered in the composition. ** A delivery particle according to the present disclosure, for example, inclusion population D as disclosed in Table 5B above, but containing fragrance 2. The "% active" provided is the amount of fragrance delivered to the composition.

[0229] Example 7. Exemplary Formulation - Laundry Additive Particles Table 7 shows exemplary formulations of compositions according to the present disclosure. Specifically, the following compositions are laundry additive particles in the form of pastilles or "beads" similar in morphology to those sold as DOWNY UNSTOPABLES (e.g., The Procter & Gamble Co.).

[0230] [Table 13] 1 PLURIOL E8000 (e.g. BASF) 2 Esterification products of (C16-18 and C18 unsaturated) fatty acids with triethanolamine, quaternized with dimethyl sulfate (REWOQUAT WE 18, e.g., Evonik) 3 Cationic modified hydroxyethyl cellulose 4 Fragrance delivery particles according to the present disclosure, for example, inclusion population B disclosed in Table 5B above. The % provided is the amount of aqueous slurry provided in the composition, the slurry comprising about 45% by weight of the delivery particles (core + shell). 5 Fragrance delivery particles according to the present disclosure, for example, inclusion population D as disclosed in Table 5B above, but containing Perfume 2. The % provided is the amount of aqueous slurry provided in the composition, the slurry comprising about 45% by weight of the delivery particles (core + shell).

[0231] 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."

[0232] All documents cited herein, including any cross-referenced or related patents or patent applications, and any patent applications or patents to which this application claims priority or the benefit thereof, are incorporated herein by reference in their entirety, unless expressly stated to the contrary. The citation of any document shall not be deemed to be prior art to any invention disclosed or claimed herein, or to teach, suggest or disclose such invention, either alone or in combination with any other reference(s). Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

[0233] While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. 1. A consumer product composition comprising: a first population of first encapsulates having a first core material surrounded by a first shell material, said first core material comprising a first benefit agent, said first core material and said first shell material being present in a first core:shell weight ratio of 95:5 or greater; a second population of second encapsulates having a second core material surrounded by a second shell material, said second core material comprising a second benefit agent, and said second core material and said second shell material are present in a second core:shell weight ratio of less than 95:

5.

2. the first inclusion body of a given particle size is characterized by a first crushing strength; the second inclusion body of a given particle size is characterized by a second crushing strength; 2. The consumer product composition of claim 1, wherein the difference between the first breaking strength and the second breaking strength is at least 0.5 MPa, preferably at least 1.0 MPa, more preferably at least 1.5 MPa, even more preferably at least 2.0 MPa, and even more preferably at least 3 MPa.

3. 1. A consumer product composition comprising: a first population of first encapsulates having a first core material surrounded by a first shell material, said first core material comprising a first benefit agent, said first core material and said first shell material being present in a first core:shell weight ratio of 95:5 or greater, and wherein a first encapsulate of a given size is characterized by a first crush strength; a second population of second encapsulates having a second core material surrounded by a second shell material, said second core material comprising a second benefit agent, and a second population of second encapsulates of a given size characterized by a second breaking strength; 13. A consumer product composition, wherein the difference between said first breaking strength and said second breaking strength is at least 0.5 MPa, preferably at least 1.0 MPa, more preferably at least 1.5 MPa, even more preferably at least 2.0 MPa, even more preferably at least 3 MPa.

4. below: the first breaking strength is 75% or less, preferably 10% to 75%, more preferably 10% to 60%, even more preferably 10% to 50% of the second breaking strength; or said first breaking strength is at least 125%, preferably 125% to 1000%, more preferably 150% to 1000%, even more preferably 250% to 1000%, more preferably 200% to 1000% of said second breaking strength; 4. The consumer product composition according to any one of claims 1 to 3, wherein one of the following is true:

5. 5. The consumer product composition of any one of claims 2 to 4, wherein the first breaking strength, the second breaking strength, or both, is from 0.5 to 10 MPa, preferably from 0.5 to 8 MPa, more preferably from 0.5 to 5 MPa.

6. 6. The consumer product composition according to any one of the preceding claims, wherein the first core:shell weight ratio is at least 96:4, preferably at least 97:3, more preferably at least 98:

2.

7. 7. The consumer product composition of any one of claims 1 to 6, wherein the second core material and the second shell material are present in a second core:shell weight ratio of less than 92:8, preferably less than 90:10, more preferably less than 88:

12.

8. The consumer product composition of any one of claims 1 to 7, wherein the first shell material, the second shell material, or both, comprise a (meth)acrylate material, preferably both.

9. the first shell material comprises a (meth)acrylate material; the second shell material does not comprise a (meth)acrylate material; Preferably, the second shell material comprises an aminoplast, a polyurea, or a combination thereof; More preferably, the aminoplast, if present, comprises melamine.

10. the first shell material, preferably a (meth)acrylate polymer, is derived, at least in part, from at least one free radical initiator; 10. The consumer product according to any one of claims 1 to 9, wherein preferably the at least one free radical initiator is present in an amount of 2wt% to 50wt%, preferably 5wt% to 40wt%, more preferably 10wt% to 40wt%, even more preferably 15wt% to 40wt%, even more preferably 20wt% to 35wt%, or more preferably 20wt% to 30wt% by weight of the first shell material.

11. 11. The consumer product composition of any one of claims 1 to 10, wherein the predetermined particle size is from 5 microns to 50 microns, preferably from 5 microns to 45 microns, more preferably from 5 microns to 20 microns, more preferably from 10 microns to 20 microns, and most preferably 10 microns, based on particle diameter.

12. the first population of inclusion bodies is characterized by a first volume weighted median particle size between 30 microns and 50 microns; Preferably, the second population of inclusion bodies is characterized by a second volume weighted median particle size that is less than the first volume weighted median particle size; A consumer product composition according to any one of claims 1 to 11, wherein preferably said second volume weighted median particle size is from 10 microns to 30 microns.

13. 13. A consumer product composition according to any one of the preceding claims, wherein the first benefit agent, the second benefit agent, or both, comprise a perfume raw material, preferably both comprise a perfume raw material, more preferably they comprise different perfume raw materials.

14. the first core material, the second core material, or both, further comprising a partitioning modifier; Preferably, the partition modifier is a vegetable oil, a modified vegetable oil, C ４ ~C ２４ 14. A consumer product composition according to any one of claims 1 to 13 comprising a material selected from the group consisting of mono-, di- and triesters of fatty acids, propan-2-yl tetradecanoate, isopropyl myristate, dodecanophenone, lauryl laurate, methyl behenate, methyl laurate, methyl palmitate, methyl stearate and mixtures thereof, more preferably isopropyl myristate.

15. the composition further comprises a processing aid; 15. The consumer product composition of any one of claims 1 to 14, wherein preferably the processing aid is selected from the group consisting of surfactants, conditioning actives, deposition aids, rheology modifiers or structurants, bleaching systems, stabilizers, builders, chelating agents, dye transfer inhibitors, dispersants, enzymes, enzyme stabilizers, catalytic metal complexes, polymeric dispersants, mud and soil removal / anti-redeposition agents, brighteners, suds suppressors, silicones, hueing agents, aesthetic dyes, undiluted fragrance, additional fragrance delivery systems, structural elastomers, carriers, hydrotropes, processing aids, anti-agglomerating agents, coatings, formaldehyde scavengers, pigments, and mixtures thereof.

16. 16. The consumer product composition of any one of claims 1 to 15, wherein the composition is a laundry detergent composition, a fabric conditioning composition, a laundry additive, a fabric pre-treatment composition, a fabric refresher composition, or a mixture thereof.

17. 17. The consumer product composition of any one of claims 1 to 16, wherein the composition is in the form of a liquid composition, a granular composition, a hydrocolloid, a single compartment pouch, a multi-compartment pouch, a dissolvable sheet, pastilles or beads, a fibrous article, a tablet, a stick, a bar, a flake, a foam / mousse, a non-woven sheet, or a mixture thereof.

18. 18. A method of treating a surface, said method comprising contacting said surface with a consumer product composition according to any one of claims 1 to 17, optionally in the presence of water.

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