Consumer product compositions containing populations of inclusion bodies

Abstract

1. A consumer product composition, such as a fabric care composition, comprising a processing aid and a population of encapsulates, the encapsulates comprising a core and a shell surrounding the core, the shell comprising an acrylate material, the core comprising a benefit agent, and the population characterized by a core:shell weight ratio of 95:5 or greater. Related methods of use and manufacture of such compositions.

Description

[Technical Field]

[0001] The present disclosure relates to consumer product compositions comprising a therapeutic adjunct and a population of core / shell inclusions, wherein the shell comprises an acrylate material. The present disclosure also relates to methods of using and making such compositions. [Background technology]

[0002] It is known to use encapsulates in consumer product compositions, such as fabric care compositions, to deliver benefit agents, such as perfumes. The encapsulates typically comprise a polymeric shell or wall material surrounding a core in which the benefit agent can be found.

[0003] Encapsulations may be characterized by a fracture strength, which relates to the force required to rupture the capsule and substantially release the benefit agent. However, capsules of different particle sizes may have very different fracture strengths, resulting in different release profiles across different touch points.

[0004] If inclusions of different particle sizes adhere differently on different surfaces, the different fracture strengths can result in inconsistent performance from one treated surface to the next.

[0005] For example, in the context of fabric care, different breaking strengths can cause inconsistent performance between different fabric washes, or even between different clothes in the same wash.This is believed to be because capsules of different particle sizes adhere differently to different types of fabric.Therefore, if smaller capsules are more likely to adhere to a first fabric, and larger capsules are more likely to adhere to a second fabric, the freshness profile at specific touch points of each fabric may be different due to the inconsistent breaking strength of encapsulated bodies, which may result in consumer dissatisfaction. Summary of the Invention [Problem to be solved by the invention]

[0006] There is a need for consumer product compositions that provide consistent freshness performance, especially on a variety of surfaces such as fabrics. [Means for solving the problem]

[0007] The present disclosure relates to fabric care compositions comprising a population of inclusion bodies.

[0008] For example, the disclosure relates to a consumer product composition comprising a processing aid and a population of inclusions, wherein the inclusions comprise a core and a shell surrounding the core, the shell comprising an acrylate material, the core comprising a benefit agent, the core and shell being present in a core:shell weight ratio for the population of at least 95:5, the population of inclusions characterized by a broadness index of at least 1.0, and the population of inclusions characterized by a delta break strength of less than 400%. The population of inclusion bodies may include a first inclusion body having a 5th percentile volume-weighted particle size and characterized by a first breaking strength, and a second inclusion body having a 90th percentile volume-weighted particle size and characterized by a second breaking strength, wherein at least one of the following is true: (i) the first average breaking strength and the second average breaking strength are each independently between about 0.5 and about 10 MPa, preferably between about 0.5 and about 8 MPa, more preferably between about 0.5 and about 5 MPa; and / or (ii) the difference between the first average breaking strength and the second average breaking strength is less than 10 MPa, preferably less than 6 MPa, preferably less than 4 MPa.

[0009] The present disclosure provides a consumer product composition comprising a processing aid and a population of inclusion bodies, the inclusion bodies comprising a core and a shell surrounding the core, the shell comprising an acrylate material, the core comprising a benefit agent, the core and shell being present in a core:shell weight ratio for the population of at least 95:5, the population of inclusion bodies being a first inclusion body at a 5th percentile volume weighted particle size and characterized by a first breaking strength, and a second inclusion body at a 90th percentile volume weighted particle size. and a second encapsulate characterized by a second breaking strength, wherein at least one of the following is true: (i) the first breaking strength and the second breaking strength are each independently from about 0.5 to about 10 MPa, preferably from about 0.5 to about 8 MPa, more preferably from about 0.5 to about 5 MPa; and / or (ii) the difference between the first breaking strength and the second breaking strength is less than 10 MPa, preferably less than 6 MPa, preferably less than 4 MPa.

[0010] The present disclosure also relates to a method of treating fabric laundry, comprising contacting the fabric laundry with a composition according to the present disclosure, optionally in the presence of water, preferably wherein the fabric laundry comprises at least two textile materials. [Brief explanation of the drawings]

[0011] The drawings herein are illustrative in nature and are not intended to be limiting. [Figure 1] Graphs are shown plotting inclusion body particle size at d5, d50, and d90 for various inclusion body populations against their respective crush strengths. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present disclosure relates to consumer product compositions, such as fabric care compositions, comprising a population of inclusion bodies. The inclusion bodies in the population described herein may be present in a relatively broad particle size distribution, with some being relatively small and some being relatively large. Without being bound by theory, it is believed that particles of different sizes may be deposited on different types of surfaces, such as fabrics, in part, by a filtration mechanism whereby particles are trapped in the fabric threads (at a particular thread count or thread thickness, larger particles may be trapped while smaller particles pass through). Thus, consumer product compositions having a population of inclusion bodies with a relatively broad particle size distribution are likely to be effective on a wide variety of surfaces / fabrics / garment types.

[0013] Additionally, the encapsulated bodies of the present disclosure are designed to have a relatively consistent fracture strength across the particle size distribution of the population. Depending on the fracture strength of the encapsulated bodies, the encapsulated bodies may be more likely to rupture at one touchpoint than another (e.g., wet touchpoints, dry touchpoints, abrasive fabric touchpoints). A consistent fracture strength profile across the population indicates that the encapsulated bodies will rupture at similar touchpoints.

[0014] Combining insight into these two vectors (inclusion particle size and fracture strength) with the inclusion population makes the consumer product compositions of the present disclosure surprisingly effective. In short, by providing a treatment composition comprising a population of particles of various sizes that have a relatively consistent fracture strength regardless of particle size, the present compositions are believed to provide desirable consistent performance across a variety of target surfaces, such as various fabric types and laundry.

[0015] One way in which the desired combination of encapsulant properties is achieved involves carefully selecting the amounts of core and wall material in the encapsulant. In short, it is believed that formulating encapsulants having a relatively high weight ratio of core material to wall material (e.g., 95:5 or greater) will provide the desirable properties described herein, particularly for encapsulants having acrylate wall materials.

[0016] The materials, 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 concentrations. This includes compositions in which the indicated material is present only as an impurity in one of the other intentionally included materials. The indicated material, if present at all, may be present at a concentration of less than 1%, or less than 0.1%, or less than 0.01%, or even 0% by weight of the composition.

[0019] As used herein, "consumer product" means a baby care, beauty care, fabric and home care, family care, feminine care, and / or health care product or device that is intended to be used or consumed in the form in which it is sold and not intended for subsequent commercial manufacture or modification. Such products include diapers, bibs, wipes; products and / or related methods for treating human hair (including those for bleaching, coloring, dyeing, conditioning, shampooing, and styling); deodorants and antiperspirants; personal cleansing; skin care, including the application of creams, lotions, and other topically applied products 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, etc.). cleaning (including softening), laundry detergents, laundry and rinse additives and / or care, hard surface cleaning and / or treatments, and other cleaning for consumer or commercial use); products and / or methods related to toilet paper, tissue, paper handkerchiefs, and / or paper towels; tampons, feminine napkins; adult incontinence products; products and / or methods related to oral care, including toothpaste, tooth gel, tooth rinse, denture adhesives, tooth whitening agents; over-the-counter health care products (including cough suppressants and cold remedies); pest control products; and water purification.

[0020] As used herein, the phrase "fabric care composition" includes compositions and formulations designed to treat fabrics. Such compositions include, but are not limited to, laundry cleaning compositions and detergents, fabric softening compositions, fabric enhancing compositions, fabric deodorizing 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 terms "(meth)acrylate" or "(meth)acrylic" should be understood to refer to 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, diethylene, triethylene, and tetraethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, ... It is intended to encompass a wide range of polymeric materials, including (meth)acrylates, 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, and various multifunctional (meth)acrylates. Monofunctional (meth)acrylates, i.e., those containing only one (meth)acrylate group, can also be used advantageously.Typical 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 also be used.

[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, as used herein, the term "monomer" or "monomers" shall be understood to mean a monomer, but also to include an oligomer or monomer, and also to include a prepolymer 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 exclude 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 population of inclusion bodies and processing aids, each of which is described in more detail below.

[0029] The consumer product compositions of the present disclosure may be useful for baby care, beauty care, fabric care, home care, family care, feminine care, and / or health care applications. The consumer product compositions may be useful for treating surfaces such as fabric, hair, or skin. The consumer product compositions may be intended to be used or consumed in the form in which they are sold. The consumer product compositions 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 (such as a shampoo or conditioner), a body cleansing composition, or mixtures thereof.

[0031] The consumer product composition may be a fabric care composition such as a laundry detergent composition (including a heavy-duty liquid cleaning detergent or unit dose article), a fabric conditioning composition (including a liquid fabric softening composition and / or a strengthening composition), a laundry additive, a fabric pretreatment composition (including a spray, pourable liquid, or spray), a fabric refresher composition (including a spray), or a mixture 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, a pastille or bead, 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 contain from about 30%, or from about 40%, or from about 50%, to about 99%, or to about 95%, or to about 90%, or to about 75%, or to about 70%, or to about 60% water 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 be in the form of a plurality of granules or particles, at least some of which contain different compositions. The composition may be a powdered or granular cleaning composition, which may include bleach. The composition may be in the form of beads or lozenges, 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 unit-dose article such as a tablet, pouch, sheet, or fibrous article. Such pouches typically include a water-soluble film, e.g., a polyvinyl alcohol water-soluble film, that at least partially encapsulates the composition. Suitable films are available from MonoSol, LLC (Indiana, USA). The composition can be enclosed 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 (e.g., powder), or a combination thereof. The pouched composition may have a relatively small amount of water, e.g., less than about 20%, or less than about 15%, or less than about 12%, or less than about 10%, or less than about 8% by weight of the detergent composition.

[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 left 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 described in more detail below.

[0039] Inclusion body clusters The compositions and products of the present disclosure comprise a population of inclusion bodies.

[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%, by weight of the composition, of encapsulating agent. The composition may comprise an amount of encapsulating agent 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%, by weight of the composition, of perfume. As discussed herein, the amount or weight percent of encapsulating agent refers to the combined shell material and core material.

[0041] The encapsulants typically comprise a core and a shell, with the shell encapsulating the core. As described in more detail below, the core may comprise a benefit agent and optionally a partitioning modifier, and the shell may comprise certain polymers, i.e., acrylate materials.

[0042] The inclusion bodies may have a volume weighted median inclusion body particle 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 30 to 45 microns, or even 30 to 40 microns. The inclusion bodies may have a volume weighted median inclusion body particle size of about 30 to about 50 microns.

[0043] The population of inclusion bodies may have a relatively broad particle size distribution. As discussed above, this broad distribution is believed to contribute to the composition being more effective on a variety of fabrics or garments. The population of inclusion bodies may be characterized by a broadness index, which is a method for characterizing particle size distribution.

[0044] The broadness index is calculated by determining the particle size exceeded by 90% of the cumulative particle volume (90% particle size), the particle size exceeded by 5% of the cumulative particle volume (5% particle size), and the volume-weighted median particle size (50% particle size; this is the size above and below which 50% of the particle volume falls). These values can be used in the following equation to determine the broadness index of a population of inclusion bodies: Broadness index = (90% particle size - 5% particle size) / 50% particle size

[0045] The population of inclusion bodies of the present disclosure may be characterized by a broadness index of at least 1.0, preferably at least 1.1, and more preferably at least 1.2. The population of inclusion bodies may be characterized by a broadness index of about 1.0 to about 2.0, or about 1.0 to about 1.8, or about 1.1 to about 1.6, or about 1.1 to about 1.5, or about 1.2 to about 1.5, or about 1.2 to about 1.4. A relatively high broadness index value indicates a relatively wide particle size distribution.

[0046] The population of inclusion bodies may be characterized by one or more of: (i) a 5th percentile volume weighted particle size of about 1 micron to about 15 microns, preferably about 5 microns to about 10 microns; (ii) a 50th percentile (median) volume weighted particle size of about 15 microns to about 45 microns, preferably about 25 microns to about 40 microns; (iii) a 90th percentile volume weighted particle size of about 20 microns to about 65 microns, preferably about 25 microns to about 50 microns; or (iv) a combination thereof.

[0047] The encapsulates may be characterized by their breaking strength. The average breaking strength and the delta breaking strength are determined according to the procedures provided in the Test Methods section below.

[0048] The population of delivery particles has an average breaking strength (breaking strength is the median of the population / d) 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 delivery particles may be characterized by an average breaking strength 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. The population of delivery particles may be characterized by an average breaking strength of about 0.2 to about 10 MPa, preferably about 0.5 to about 8 MPa, and more preferably about 0.5 to about 5 MPa. These levels of d50 It is believed that delivery particles having an average breaking strength of 350% or less will perform well at one or more touch points typical of surfaces such as fabrics treated with a composition according to the present disclosure. A population of inclusions can be characterized by a delta breaking strength. Delta breaking strength is a way of describing differences in breaking strength within a population, for example, by comparing the breaking strength of the largest particle with the breaking strength of the smallest particle in the population. A relatively low delta breaking strength indicates a relatively low variation between the breaking strength of smaller inclusions and the breaking strength of larger inclusions in the population. Specifically, it is believed that a delta breaking strength of 350% or less can be advantageous for providing consistent performance across the particle size distribution of the population, and subsequently across fabrics and laundry.

[0049] The delta breaking strength, expressed as a percentage, can be calculated using the following equation:

[0050]

number

[0051] The inclusion body population may be characterized by a delta breaking strength of 400% or less, or 350% or less, preferably 300% or less, more preferably 250% or less, more preferably 200% or less, more preferably 150% or less, more preferably 100% or less, more preferably 75% or less. The inclusion body population may have a delta breaking strength of about 10% to about 400%, or about 10% to about 350%, or about 15% to about 350%, or about 50% to about 350%, or about 10% to about 230%, or about 15% to about 230%, or about 50% to about 230%, or about 15% to about 200%, or about 30% to about 200%.

[0052] As described in more detail below, the encapsulates of the present disclosure include a core and a shell surrounding the core. Surprisingly, it has been discovered that, among other things, selecting a particular ratio of core material to shell material can result in a population of encapsulates that exhibit improved performance. Without being bound by theory, it is believed that formulating encapsulates with a relatively high core-to-wall ratio provides a population with the desirable fracture strength profile described in the present disclosure. In addition, encapsulates with a high core:wall ratio can deliver benefit agents more efficiently, requiring less wall material to deliver the same amount of benefit agent. Furthermore, because the encapsulates have a relatively high benefit agent loading, less encapsulate material may be required for a particular composition, saving costs and / or preserving formulation space.

[0053] The encapsulations of the present disclosure may be characterized by the weight ratio of the core to the polymer wall (as used herein, also referred to as the "core:polymer wall ratio," "core-wall ratio," "core:wall ratio," or "C:W ratio," etc.). 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 suboptimal performance.

[0054] As used herein, the core:polymer wall ratio is understood to be calculated based on the weight of the reacted wall-forming material and initiator that make up the polymer wall, and for purposes of the calculation, excludes encapsulated non-structural materials, such as encapsulated emulsifiers, in the calculation. This calculation is based on the starting charge, i.e., the amount of charged monomer and initiator. Calculation of a sample core:wall polymer ratio is illustrated in Example 1 below. If the starting charge is not readily available, the core:wall ratio is determined according to the analytical procedure for determining core:wall ratio provided in the Test Methods section.

[0055] The inclusion bodies, preferably the population of inclusion bodies, may be characterized by a core:polymer wall weight ratio of at least about 95:5, preferably 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 inclusion bodies, preferably the population of inclusion bodies, may be characterized by a core:polymer wall weight ratio of from about 95:5 to about 99:0.5, preferably from about 96:4 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 core to polymer wall 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.

[0056] Preferred populations of inclusion bodies have combinations of the above characteristics. For example, the population of inclusion bodies may be characterized by two or more, preferably three or more, and more preferably all four of the following characteristics: a volume-weighted median particle size of about 10 to about 100 microns, a broadness index of at least 1.0, a delta break strength of 400% or less, and / or a core-shell ratio of 95:5 or greater. Additional combinations of characteristics are provided in Table A below.

[0057] [Table 1]

[0058] The components of the inclusion bodies and associated processes of the present disclosure are described in more detail below.

[0059] Shell The encapsulates of the present disclosure comprise a shell surrounding a core. The shell comprises a shell material. Note that as used herein, the terms "shell," "wall," and "polymeric wall" are used interchangeably unless otherwise indicated.

[0060] The encapsulants of the present disclosure include a shell surrounding a core. The shell comprises a polymeric material, specifically a (meth)acrylate polymer, which is derived, at least in part, from one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers.

[0061] The polymer wall may comprise about 5% to about 100% by weight of the polymer wall, 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 of the (meth)acrylate polymer. The polymer wall may comprise about 5% to about 100% by weight of the polymer wall, 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 of the 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 the oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer.

[0062] The one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers comprise at least three, preferably at least four, preferably at least five, preferably at least six, and more preferably exactly six radically polymerizable functional groups, provided that at least one of the radically polymerizable functional groups is an acrylate or methacrylate group.

[0063] The one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers may contain 3 to 6, preferably 4 to 6, more preferably 5 to 6, and most preferably 6 radically 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 a more compact shell and less leakage, compared to walls formed from monomers with fewer radically polymerizable groups.

[0064] The radically polymerizable functional groups can 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 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 radically polymerizable functional group is independently selected from the group consisting of acrylate and methacrylate. These functional groups are believed to result in delivery particles with favorable properties, such as less leakage at high core:wall ratios, compared to other functional groups.

[0065] The oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer may comprise a polyfunctional aromatic urethane acrylate. Preferably, the oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer comprises a hexafunctional aromatic urethane acrylate.

[0066] Additionally or alternatively, the oil-soluble or oil-dispersible multifunctional (meth)acrylate monomer or oligomer may include a multifunctional aliphatic urethane acrylate.

[0067] The acrylate material may be derived from at least two, and preferably at least three, different monomers or oligomers.

[0068] The (meth)acrylate polymer of the encapsulation shell may be derived from at least two different multifunctional (meth)acrylate monomers, e.g., first and second multifunctional (meth)acrylate monomers, each of which may be preferably 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 (e.g., hexafunctional), and the second multifunctional (meth)acrylate monomer may contain fewer than six radically polymerizable functional groups, e.g., a number selected from three (e.g., trifunctional), four (e.g., tetrafunctional), or five (e.g., pentafunctional), preferably five radically polymerizable functional groups. The first multifunctional (meth)acrylate monomer and the second multifunctional (meth)acrylate monomer 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.

[0069] The oil-soluble or oil-dispersible (meth)acrylate monomer may further comprise a monomer selected from an amine methacrylate, an acid methacrylate, or a combination thereof.

[0070] The shell (meth)acrylate polymer may be a reaction product derived from an oil-soluble or oil-dispersible multifunctional (meth)acrylate, a second monomer, and a third monomer. Preferably, the second monomer comprises a basic (meth)acrylate monomer and the third monomer comprises an acidic (meth)acrylate monomer. The basic (meth)acrylate monomer or oligomer may be present at less than 2% by weight of the wall polymer. The acidic (meth)acrylate monomer or oligomer may be present at less than 2% by weight of the polymer.

[0071] The basic (meth)acrylate monomer and / or its oligomer or prepolymer may include one or more of amine-modified methacrylate, amine-modified acrylate, such as a monomer such as a mono- or diacrylate amine or a mono- or dimethacrylate amine, an amine-modified polyether acrylate, an amine-modified polyether methacrylate, an aminoalkyl acrylate, or an aminoalkyl methacrylate. The amine may be a primary, secondary, or tertiary amine. Preferably, the alkyl portion of the basic (meth)acrylate monomer is C1 to C12.

[0072] The amine (meth)acrylate suitable for use in the particles of the present disclosure can include aminoalkyl acrylate or aminoalkyl methacrylate, and includes, for example, but not limited to, ethylaminoethyl acrylate, ethylaminoethyl methacrylate, aminoethyl acrylate, aminoethyl methacrylate, tertiary butylethylamino acrylate, tertiary butylethylamino methacrylate, tertiary butylaminoethyl acrylate, tertiary butylaminoethyl methacrylate, diethylamino acrylate, diethylamino methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, dimethylaminoethyl acrylate, and dimethylaminoethyl methacrylate.Preferably, the amine (meth)acrylate is aminoethyl acrylate, aminoethyl methacrylate, or tertiary butylaminoethyl methacrylate.

[0073] The acidic (meth)acrylate may include, for example, one or more carboxy-substituted acrylates or methacrylates, preferably carboxy-substituted alkyl acrylates or methacrylates, such as carboxyalkyl acrylates, carboxyalkyl methacrylates, carboxyaryl acrylates, and carboxyaryl methacrylates, and preferably the alkyl moiety is a straight or branched C1-C10 alkyl moiety. The carboxyl moiety can be bonded to any carbon atom, preferably the terminal carbon, of the C1-C10 alkyl moiety. Carboxy-substituted aryl acrylates or methacrylates can also be used, or even (meth)acryloyloxyphenyl alkyl carboxylic acids can be used. The alkyl moiety of the (meth)acryloyloxyphenyl alkyl carboxylic acid can be C1-C10.

[0074] Carboxy(meth)acrylates suitable for use in the particles of the present disclosure include 2-carboxyethyl acrylate, 2-carboxyethyl methacrylate, 2-carboxypropyl acrylate, 2-carboxypropyl methacrylate, carboxyoctyl acrylate, and carboxyoctyl methacrylate. Carboxy-substituted aryl acrylates or methacrylates include 2-acryloyloxybenzoic acid, 3-acryloyloxybenzoic acid, 4-acryloyloxybenzoic acid, 2-methacryloyloxybenzoic acid, 3-methacryloyloxybenzoic acid, and 4-methacryloyloxybenzoic acid. (Meth)acryloyloxyphenyl alkyl carboxy acids include, but are not limited to, 4-acryloyloxyphenyl acetic acid or 4-methacryloyloxyphenyl acetic acid.

[0075] In addition to the oil-soluble or oil-dispersible polyfunctional (meth)acrylate monomer or oligomer, the shell (meth)acrylate polymer may further be derived from a water-soluble or water-dispersible mono- or polyfunctional (meth)acrylate monomer or oligomer that may contain a hydrophilic functional group. 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] When preparing the inclusion body mass, an emulsifier may optionally be included, preferably in the aqueous phase. The emulsifier may be a polymeric emulsifier. The emulsifier can help further stabilize the emulsion. During the formation of the shell of the delivery particle, the polymeric emulsifier may become entrapped in the polymer wall material. These inclusions of emulsifiers in the shell can be used to advantage in modifying the polymer wall properties, which affect attributes such as flexibility, leakage, strength, and other properties. Thus, the shell of the delivery particle may further comprise a polymeric emulsifier entrapped within the shell, preferably the polymeric emulsifier comprises polyvinyl alcohol. However, as noted above, the entrapped polymeric emulsifier is not included when determining the core:shell weight ratio.

[0077] The encapsulation body may contain about 0.5% to about 40%, preferably about 0.5% to about 20%, and more preferably 0.8% to 5%, of an emulsifier based on the weight of the wall material. Preferably, the emulsifier may be selected from the group consisting of polyvinyl alcohol, carboxylated or partially hydrolyzed polyvinyl alcohol, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose, salts or esters of stearic acid, lecithin, organic sulfonic acids, 2-acrylamido-2-alkylsulfonic acid, styrene sulfonic acid, polyvinylpyrrolidone, copolymers of N-vinylpyrrolidone, polyacrylic acid, polymethacrylic acid, copolymers of acrylic acid and methacrylic acid, and water-soluble surfactant polymers that reduce the surface tension of water. The emulsifier preferably comprises polyvinyl alcohol, which preferably has a degree of hydrolysis of about 55% to about 99%, preferably about 75% to about 95%, more preferably about 85% to about 90%, and most preferably about 87% to about 89%. The polyvinyl alcohol may have a viscosity of about 40 cps to about 80 cps, preferably about 45 cps to about 72 cps, more preferably about 45 cps to about 60 cps, and most preferably 45 cps to about 55 cps in a 4% aqueous solution at 20°C. The viscosity of the polymer is determined by measuring the viscosity of a freshly prepared solution using a Brookfield LV viscometer equipped with a UL adapter, as described in British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method. The polyvinyl alcohol may have a degree of polymerization of about 1500 to about 2500, preferably about 1600 to about 2200, more preferably about 1600 to about 1900, and most preferably about 1600 to about 1800.The weight average molecular weight of the polyvinyl alcohol may be about 130,000 daltons to about 204,000 daltons, preferably about 146,000 daltons to about 186,000 daltons, more preferably about 146,000 daltons to about 160,000 daltons, and most preferably about 146,000 daltons to about 155,000 daltons, and / or has a number average molecular weight of about 65,000 daltons to about 110,000 daltons, preferably about 70,000 daltons to about 101,000 daltons, more preferably about 70,000 daltons to about 90,000 daltons, and most preferably about 70,000 daltons to about 80,000 daltons.

[0078] The acrylate material of the shell, preferably a (meth)acrylate polymer, 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. The one or more free radical initiators may provide a source of free radicals upon activation.

[0079] Without being 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 a level of initiator can result in insufficient polymer wall formation. Too high a level can result in an inclusion wall having a relatively low level of structural monomer. In either situation, the resulting capsules may be relatively leaky and / or fragile. Furthermore, it is believed that optimizing inclusion 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.

[0080] Thus, the amount of initiator present can be about 2% to about 50% by weight of the polymer wall (e.g., wall monomers plus initiator, excluding embedded polymeric emulsifier, as described herein for core:wall ratio), 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 even more preferably about 20% to about 30% by weight. It is believed that relatively higher amounts of initiator within the disclosed ranges can result in improved capsules with reduced leakage. The optimal amount of initiator can vary depending on the nature of the core material. The (meth)acrylate polymer of the polymer wall can be derived from a first initiator and a second initiator, with the first initiator and second initiator being 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.

[0081] Suitable free radical initiators 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 peroxide, dialkyl peroxide, alkyl peroxide, peroxy ester, peroxycarbonate, peroxyketone, and peroxydicarbonate, 2,2'-azobis(isobutylnitrile), 2,2'-azobis(2,4-dimethylpentanenitrile), 2,2'-azobis(2,4-dimethylvaleronitrile), 2,2'-azobis(2-methylpropane ... Azobis(2-methylbutyronitrile), 1,1'-azobis(cyclohexanecarbonitrile), 1,1'-azobis(cyanocyclohexane), benzoyl peroxide, decanoyl peroxide; lauroyl peroxide; butyl peroxide, di(n-propyl) peroxydicarbonate, di(sec-butyl) peroxydicarbonate, di(2-ethylhexyl) peroxydicarbonate, 1,1-dimethyl-3-hydroxybutyl peroxyneodecanoate, α-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-(t The initiator may be selected from the group of initiators including 1,1-di-(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-amylperbenzoate, t-butylperbenzoate, ethyl-3,3-di-(t-amylperoxy)-butyrate, and the like.

[0082] The shell of the encapsulant may include, for example, a coating on the outer surface of the shell remote from the core. The encapsulant may be prepared 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. However, as noted above, a coating that is not a structural or supportive feature of the wall shall not be included in the calculation when determining the core:wall polymer weight ratio.

[0083] 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, hydroxypropyl ... Examples of suitable coating materials include, but are not limited to, materials selected from the group consisting of ethyl cellulose, other modified celluloses, sodium alginate, chitosan, casein, pectin, modified starch, polyvinyl acetal, polyvinyl butyral, polyvinyl methyl ether / maleic anhydride, polyvinylpyrrolidone and its copolymers, poly(vinylpyrrolidone / methacrylamidopropyltrimethylammonium chloride), polyvinylpyrrolidone / vinyl acetate, polyvinylpyrrolidone / dimethylaminoethyl methacrylate, polyvinylamine, polyvinylformamide, polyallylamine, and copolymers of polyvinylamine, polyvinylformamide, and polyallylamine, and mixtures thereof. The coating material may be a cationic polymer. The coating material may comprise polyvinylformamide, chitosan, or a combination thereof, preferably chitosan.

[0084] b. Benefit Agents The encapsulates 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 a benefit to a surface, such as fabric or hair.

[0085] 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 by weight of the core, which may preferably comprise a perfume ingredient.

[0086] Benefit agents include 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, odor reducers, odor control materials, chelating agents, antistatic agents, fabric softeners, insect and moth repellents, colorants, antioxidants, chelating agents, thickeners, drape and foam conditioners, smoothing agents, wrinkle control agents, sanitizing agents, disinfectants, bacterial inhibitors, mold inhibitors, mildew inhibitors, antiviral agents, drying agents, stain resistant agents, soil release agents, fabric The active ingredient may be selected from the group consisting of fabric refreshing and fresh wash maintaining agents, chlorine bleach odor control agents, dye fixatives, dye transfer inhibitors, color retention agents, optical brighteners, color restoration / revitalization agents, anti-fade agents, whiteness enhancers, anti-abrasion agents, abrasion resistant agents, fabric integration agents, anti-abrasion agents, anti-pilling agents, foam suppressors, defoamers, UV protection agents, sun fade inhibitors, anti-allergy agents, enzymes, waterproofing agents, fabric comfort agents, shrinkage resistance agents, stretch resistance agents, stretch recovery agents, skin care agents, glycerin, synthetic or natural actives, antibacterial actives, antiperspirant actives, cationic polymers, dyes, and mixtures thereof.

[0087] Preferably, the encapsulated benefit agent may include a perfume raw material. As used herein, the term "perfume raw material" (or "PRM") refers to a compound having a molecular weight of at least about 100 g / mole and useful for imparting an odor, fragrance, essence, or scent, either alone or in combination with other perfume raw materials. Typical PRMs include alcohols, ketones, aldehydes, esters, ethers, nitrites, and alkenes such as terpenes, among others. Lists of common PRMs can be found in various reference sources, such as, for example, "Perfume and Flavor Chemicals," Vols. I and II; Steffen Arctander Allured Pub. Co. (1994) and "Perfumes: Art, Science and Technology," Miller, PM and Lamparsky, D., Blackie Academic and Professional (1994).

[0088] PRMs may be characterized by their boiling point (BP) measured at atmospheric 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.

[0089] The benefit agent may include a perfume raw material having a logP of from about 2.5 to about 4. It is understood that other perfume raw materials may also be present in the core.

[0090] The perfume raw materials may comprise perfume raw materials selected from the group consisting of perfume raw materials having a boiling point (BP) less than about 250°C and a logP less than about 3, perfume raw materials having a BP greater than about 250°C and a logP greater than about 3, perfume raw materials having a BP greater than about 250°C and a logP less than about 3, perfume raw materials having a BP less than about 250°C and a logP greater than about 3, and mixtures thereof. Perfume raw materials having a boiling point BP less than about 250°C and a logP less than about 3 are known as Quadrant I perfume raw materials. Quadrant I perfume raw materials are preferably limited to less than 30% of the perfume composition. Perfume raw materials having a BP greater than about 250°C and a logP greater than about 3 are known as Quadrant IV perfume raw materials, perfume raw materials having a BP greater than about 250°C and a logP less than about 3 are known as Quadrant II perfume raw materials, and perfume raw materials having a BP less than about 250°C and a logP greater than about 3 are known as Quadrant III perfume raw materials. Suitable quadrant I, II, III and IV perfume raw materials are disclosed in US Pat. No. 6,869,923 (B1).

[0091] c. Partition modifier The core of the encapsulating agent of the present disclosure may contain a partitioning modifier. The properties of the oily material in the core can determine how much, how quickly, and / or how permeable the polyacrylate shell material will be when established at the oil / water interface. For example, if the oil phase contains highly polar materials, these materials may reduce the diffusion of acrylate oligomers and polymers to the oil / water interface, resulting in a very thin, highly permeable shell. The incorporation of a 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 acrylate oligomer, resulting in the establishment of a well-defined, highly impermeable shell. The partitioning modifier may be combined with the perfume oil material of the core prior to the incorporation of the wall-forming monomer.

[0092] The core may comprise, in addition to the encapsulated benefit agent, from greater than 0% to about 80%, preferably from greater than 0% to about 50%, more preferably from greater than 0% to about 30%, and most preferably from 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 25% to about 50% by weight of the core.

[0093] Partition modifiers include vegetable oils, modified vegetable oils, C4 to C 24 The partitioning modifier may include a material selected from the group consisting of mono-, di-, and tri-esters 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, or 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.

[0094] d. Method for producing inclusion bodies The encapsulates may be manufactured 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 properties described herein, such as volume weighted particle size, relative amounts of benefit agent and / or partitioning modifier, etc.

[0095] For example, the present disclosure relates to a process for producing 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 comprise a benefit agent and a partitioning modifier, as described above. The method may further comprise dissolving or dispersing one or more oil-soluble or oil-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 in the oil phase, provided that at least one of the radically polymerizable groups is an acrylate or methacrylate.

[0096] The oil-soluble or dispersible polyfunctional (meth)acrylate monomer or oligomer is described in more detail above. In particular, the oil-soluble or dispersible polyfunctional (meth)acrylate monomer or oligomer may include a polyfunctional 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 include one or more polyfunctional aliphatic urethane acrylates that can be dissolved or dispersed in the oil phase. The process may further include dissolving or dispersing one or more amine (meth)acrylates or acidic (meth)acrylates in the oil phase.

[0097] 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.

[0098] 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 an aqueous phase, an oil phase, or both.

[0099] In general, oil-soluble polyfunctional (meth)acrylate monomers are soluble or dispersible in the oil phase, typically soluble to the extent of at least 1 gram per 100 mL of oil, or dispersible or emulsifiable in the oil phase at 22° C. Water-soluble polyfunctional (meth)acrylate monomers are typically soluble or dispersible in water, typically soluble to the extent of at least 1 gram per 100 mL of water, or dispersible in water at 22° C.

[0100] Typically, the oil phase is combined with an excess amount of the water phase.When two or more oil phases are used, they are generally combined first, and then combined with the water phase.If desired, the water phase can also contain one or more water phases that are combined sequentially.

[0101] 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 particle size of the finished encapsulation bodies.

[0102] The dissolved or dispersed monomers can react by heating the emulsion or irradiating it with actinic radiation. This reaction can form a polymer wall at the interface between the droplets and the aqueous phase. The radical polymerizable groups of the multifunctional methacrylates promote self-polymerization of the multifunctional methacrylates upon heating.

[0103] 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, e.g., by heat. The process may also include adding one or more free radical initiators to the oil phase. The 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 the respective 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 that then initiates polymerization upon exposure to polymerization conditions. When multiple initiators are present, it is contemplated and preferred that each initiator be initiated or suitably initiated by different conditions.

[0104] Alternatively, the reaction 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.

[0105] 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 sufficient to transfer about 500 Joules / kg to about 5000 Joules / kg to the emulsion, about 1000 Joules / kg to about 4500 Joules / kg to the emulsion, or about 2900 Joules / kg to about 4000 Joules / kg to the emulsion.

[0106] 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 particle size of from about 30 to about 50 microns.

[0107] 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 component, or even the only component, of the oil phase in which the other materials are dissolved or dispersed.

[0108] The partition 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, and preferably isopropyl myristate. The partition 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.

[0109] As noted above, the resulting delivery particles are desirably characterized by a core to polymer wall weight ratio of 96:4 to about 99.5:0.5. It is also desirably the resulting delivery particles are characterized by a volume-weighted median particle size of about 30 to about 50 microns.

[0110] As a result of the methods of making 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, structuring agents, or other processing or stabilizing aids may be added to the slurry. The slurry may include one or more perfumes (i.e., non-encapsulated perfumes) that are different from the perfume(s) contained in the core of the benefit agent delivery particles.

[0111] An exemplary synthetic method by which inclusion bodies according to the present disclosure can be formed is further described in Example 1 below.

[0112] e. Optional second population of inclusion bodies The treatment composition of the present disclosure may include two or more populations of inclusion bodies. For example, the composition may include a first population and a second population, where the second population differs in some way from the first population. A composition having a first population and a second population of inclusion bodies may be able to provide improved performance, for example, across more touch points or across different fabric / laundry types.

[0113] For example, the composition may include a population of inclusion bodies as described above, which may be a first population of inclusion bodies. The composition may further include a second population of inclusion bodies, the inclusion bodies of the second population comprising a core and a shell surrounding the core, the core comprising a benefit agent. Preferably, the inclusion bodies are characterized by one or more of a different core composition, a different benefit agent, a different shell, a different core:shell weight ratio, a different volume-weighted median particle size, a different 5th percentile volume-weighted particle size, a different 90th percentile volume-weighted particle size, a different broadness index, a different delta breaking strength, a different mean breaking strength of particles of the 5th percentile volume-weighted particle size, a different mean breaking strength of particles of the 90th percentile volume-weighted particle size, a different cure time, a different cure temperature, or a combination thereof, where "different" means a different composition or value compared to the same characteristic of the first population of inclusion bodies.

[0114] For example, the second population of encapsulates may have a similar shell material and core:shell ratio, but a different mixture of benefit agents, preferably perfume ingredients, in the core compared to the first population.

[0115] The second population of encapsulates may comprise a different shell, e.g., by being made from a different shell material. For example, the second population of encapsulates may comprise a (second) shell material formed from a different acrylate monomer than the first population. The second population may comprise a (second) shell material comprising an aminoplast, such as a melamine-containing polymer and / or a polyurea-containing polymer.

[0116] The inclusion bodies of the second population can be characterized by a different core:shell ratio than the inclusion bodies of the first population, for example, the second population can be characterized by a core:shell ratio of less than 95:5, or 92:8 or less, or 90:10 or less, or 88:12 or less.

[0117] The first population and the second population can be present in a weight ratio of about 10:1 to about 1:10, or about 4:1 to about 1:4, or about 3:1 to about 1:3, or about 2:1 to about 1:2, or about 1:1.

[0118] consumer product auxiliary materials Compositions of the present disclosure that may be consumer products may include consumer product adjuncts that may provide a benefit in the intended end use of the composition or may be processing and / or stabilizing aids.

[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, mud and soil removal / anti-redeposition agents, brighteners, suds suppressors, silicones, hueing agents, aesthetic dyes, additional perfumes and perfume 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, mud and soil removal / anti-redeposition agents, brighteners, suds suppressors, dyes, additional perfumes and perfume 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 ingredients and the concentrations at which they are incorporated will depend on the physical form of the composition and the nature of the work being used. However, if 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. surfactants 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 contain one or more surfactants.

[0123] Compositions of the present disclosure may comprise from about 0.1% to about 70%, or from about 2% to about 60%, or from about 5% to about 50% of a surfactant system by weight of the composition. Liquid compositions may comprise from about 5% to about 40% of a 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 a 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 alkylbenzene sulfonates, alkyl ethoxylated sulfates, alkyl sulfates, ethoxylated alcohols, amine oxides, or mixtures thereof. The surfactant 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 detersive surfactants for alkoxylated and / or non-alkoxylated alkyl sulfate materials, and / or sulfonic acid detersive surfactants, such as alkyl benzene sulfonates. The anionic surfactant may be linear, branched, or a combination thereof. Preferred surfactants include linear alkyl benzene sulfonates (LAS), alkyl ethoxylated sulfates (AES), alkyl sulfates (AS), or mixtures thereof. Other suitable anionic surfactants include branched modified alkyl benzene sulfonates (MLAS), methyl ester sulfonates (MES), sodium lauryl sulfate (SLS), sodium lauryl ether sulfate (SLES), and / or alkyl ethoxylated carboxylates (AEC). The anionic surfactant may be present in acid form, salt form, or a mixture thereof. The anionic surfactant may be partially or totally neutralized, for example, with an alkali metal (e.g., sodium) or an amine (e.g., monoethanolamine).

[0126] The surfactant system may also 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 surfactant may be linear, branched (e.g., mid-chain branched), or a combination thereof. Specific 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, C8-C9 alkyl dimethyl betaines, including alkyl dimethyl betaines and cocodimethylamidopropyl betaine. 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 C8 to 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, as 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 softness, anti-wrinkle, anti-static, conditioning, anti-stretch, color, and / or appearance benefits.

[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 about 2%, or about 3%, to about 99%, or about 75%, or about 50%, or about 40%, or about 35%, or about 30%, or about 25%, or about 20%, or about 15%, or about 10% by weight of the composition of the conditioning active. The composition may comprise from about 5% to about 30% by weight of the composition of the conditioning active.

[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 these, preferably a single combination. The total amount of the quaternary ammonium ester compound and the silicone may be about 5% to about 70% by weight of the composition, or about 6% to about 50% by weight, or about 7% to about 40% by weight, or about 10% to about 30% by weight, or about 15% to about 25% by weight. 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 specific conditioning active but 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 contain a quaternary ammonium ester compound but be substantially free of silicones. The composition may contain silicones but be substantially free of quaternary ammonium ester compounds.

[0134] c. Adhesion aid The compositions of the present disclosure may also include a deposition aid. The deposition aid may promote deposition of the encapsulating agent, conditioning active, fragrance, or combination thereof, improving the performance benefits of the composition and / or allowing for more efficient incorporation of such benefit agents. The compositions may comprise 0.0001% to 3%, preferably 0.0005% to 2%, more preferably 0.001% to 1%, or about 0.01% to about 0.5%, or about 0.05% to about 0.3% of the composition of the deposition aid. The deposition aid may be a cationic or amphoteric polymer, preferably a cationic polymer.

[0135] Cationic polymers in general and their methods of manufacture are well known in the literature. Suitable cationic polymers include quaternary ammonium polymers known as "polyquaternium" polymers, as designated in the International System of Nomenclature for Cosmetic Ingredients, such as Polyquaternium-6 (poly(diallyldimethylammonium chloride)), Polyquaternium-7 (copolymer of acrylamide and diallyldimethylammonium chloride), Polyquaternium-10 (quaternized hydroxyethylcellulose), and 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 from 500 Daltons to 5,000,000 Daltons, or from 1,000 Daltons to 2,000,000 Daltons, or from 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 from 5,000 Daltons to 37,500 Daltons.

[0138] d. Rheology Modifiers / Structuring Agents The compositions of the present disclosure may include a rheology modifier and / or a structuring agent. Rheology modifiers may be used to "thicken" or "thin" the liquid composition to a desired viscosity. Structuring agents may be used to promote phase stability and / or to suspend or inhibit aggregation of particles in the liquid composition, such as the encapsulates 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 plant sources, including wood), diamide gelling agents, or combinations thereof.

[0140] The polymeric structurant may be of natural or synthetic origin. Naturally derived polymeric structurants may include hydroxyethyl cellulose, hydrophobically modified hydroxyethyl cellulose, carboxymethyl cellulose, 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 of unsaturated mono- or dicarbonates and C1-C (meth)acrylic acid. 30 It may also include copolymers with alkyl esters. 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 a composition, which may be a consumer product, may include combining an encapsulant, such as those described herein, with a consumer product adjunct, such as those described herein.

[0142] The encapsulated bodies may be combined with one or more such consumer product supplements when the encapsulated bodies are in one or more forms, including a slurry form, a neat encapsulated body form, and a spray-dried encapsulated body form. The encapsulated bodies may be combined with such consumer product supplements by methods including mixing and / or spraying.

[0143] The compositions of the present disclosure can be formulated into any suitable form and can be dispensed by any process selected by the formulator. The encapsulating agent 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 can include continuous stirred tank reactors, homogenizers, turbine agitators, recirculation pumps, paddle mixers, high shear mixers, static mixers, plow shear mixers, ribbon blenders, vertical shaft granulators and drum mixers (both batch and, where available, 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 compositions according to the present disclosure, which may provide cleaning, conditioning, and / or deodorizing benefits.

[0145] Suitable surfaces or articles may 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 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 contact with the surface or article. The surface or article may optionally be washed and / or rinsed before and / or after the contacting step.

[0147] The method for treating and / or cleaning a surface or article comprises: a) optionally washing, rinsing, and / or drying the surface or article; b) contacting the surface or article with a composition described herein, optionally in the presence of water; c) optionally washing and / or rinsing the surface or article; 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 can include almost any fabric capable of being laundered or treated under standard consumer use conditions.

[0149] Liquids that can contain the disclosed compositions can have a pH of about 3 to about 11.5. When diluted, such compositions are typically used at concentrations of about 500 ppm to about 15,000 ppm in solution. When the cleaning solvent is water, the water temperature typically ranges from 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] As noted above, the treatment compositions of the present disclosure are believed to be particularly suitable for treating multiple fabric types, which may be part of the same fabric load that is treated substantially simultaneously, or which may be separate loads that may be treated sequentially / non-simultaneously.

[0151] The present disclosure relates to a method for treating fabric laundry, the method comprising contacting the fabric with a composition according to the present disclosure, optionally in the presence of water. The composition can be diluted with water to create a treatment solution for contacting the fabric laundry. Preferably, the fabric laundry comprises at least two textile materials, for example, a first textile material and a second textile material. The fabric laundry may comprise a first textile material that is 100% cotton and a second textile material that is optionally not 100% cotton. The second textile material may be selected from polyester, synthetic blends, or mixtures thereof. The fabric laundry may comprise a first textile material characterized by a first thread count and may further comprise a second textile material characterized by a second thread count different from the first thread count. The first textile material may be part of a first article or a first garment, and the second textile material may be part of a second article or a second garment. The first textile material may be located at a first location on the first article or garment and the second textile material may be located at a second location on the first article or garment.

[0152] The method of the present disclosure may include contacting a first laundry of fabrics with a composition of the present disclosure in a first treatment process (e.g., a first washing or rinsing process). The method may further include contacting a second laundry of fabrics with a composition of the present disclosure in a second treatment process (e.g., a second washing or rinsing process). The compositions used in the first and second treatment processes may be the same composition contained in the same container. The first laundry of fabrics may include a first textile material, and the second laundry of fabrics may include a second textile material.

[0153] combination Specifically contemplated combinations of the present disclosure are set forth herein in the following alphabetized sections, which are exemplary in nature and not intended to be limiting.

[0154] A. A consumer product composition comprising a processing aid and a population of inclusions, the inclusions comprising a core and a shell surrounding the core, the shell comprising an acrylate material, the core comprising a benefit agent, the core and the shell being present in a core:shell weight ratio for the population of at least 95:5, and the population of inclusions characterized by a broadness index of at least 1.0 and a delta break strength of less than 400%. B. The consumer product composition of paragraph A, wherein the population of inclusion bodies comprises first inclusion bodies having a 5th percentile volume-weighted particle size and characterized by a first average breaking strength, and second inclusion bodies having a 90th percentile volume-weighted particle size and characterized by a second average breaking strength, and wherein at least one of the following is true: (i) the first average breaking strength and the second average breaking strength are each independently between about 0.5 and about 10 MPa, preferably between about 0.5 and about 8 MPa, more preferably between about 0.5 and about 5 MPa; and / or (ii) the difference between the first average breaking strength and the second average breaking strength is less than 10 MPa, preferably less than 6 MPa, preferably less than 4 MPa. C. A consumer product composition comprising a processing aid and a population of inclusions, the inclusions comprising a core and a shell surrounding the core, the shell comprising an acrylate material, the core comprising a benefit agent, the core and the shell being present in a core:shell weight ratio of at least 95:5 for the population, the population of inclusions comprising a first inclusion of a 5th percentile volume-weighted particle size and a second inclusion of a 90th percentile volume-weighted particle size, the first inclusion characterized by a first average breaking strength. and a second encapsulation body characterized by a second average breaking strength, wherein at least one of the following is true: (i) the first average breaking strength and the second average breaking strength are each independently from about 0.5 to about 10 MPa, preferably from about 0.5 to about 8 MPa, more preferably from about 0.5 to about 5 MPa; and / or (ii) the difference between the first average breaking strength and the second average breaking strength is less than 10 MPa, preferably less than 6 MPa, preferably less than 4 MPa. D. The consumer product composition of any one of paragraphs A-C, wherein the acrylate material comprises a (meth)acrylate polymer derived from a multifunctional (meth)acrylate monomer or oligomer having at least three radically polymerizable functional groups, with the proviso that at least one, preferably two or more, and more preferably all of the radically polymerizable groups are acrylate or methacrylate. E. The consumer product composition of any one of paragraphs A-D, wherein the multifunctional (meth)acrylate monomer or oligomer has at least four, preferably at least five, more preferably at least six, and most preferably exactly six radically polymerizable functional groups. F. The consumer product composition of any one of paragraphs A-E, wherein the multifunctional (meth)acrylate monomer or oligomer comprises a multifunctional aromatic urethane acrylate, preferably a hexafunctional aromatic urethane acrylate. G. The consumer product composition of any one of paragraphs A-F, wherein the acrylate material is derived from at least two, and preferably at least three, different monomers or oligomers. H. The consumer product composition of any one of paragraphs A-G, wherein the acrylate material, preferably a (meth)acrylate polymer, is further derived, at least in part, from at least one free radical initiator, preferably the at least one free radical initiator being present in an amount of from about 2% to about 50%, preferably from about 5% to about 40%, more preferably from about 10% to about 40%, even more preferably from about 15% to about 40%, even more preferably from about 20% to 35%, or more preferably from about 20% to 30% by weight of the shell. I. The consumer product composition of any one of paragraphs A-H, wherein the core and the shell are present in a core:shell weight ratio of from about 95:5 to about 99.5:0.5, preferably from about 96:4 to about 99:1, preferably from 97:3 to about 99:1, more preferably from about 97:3 to about 98:2. J. The consumer product composition of any one of paragraphs AI, wherein the population of inclusion bodies is characterized by a broadness index of at least 1.1, preferably at least 1.2. K. The consumer product composition of any one of paragraphs A-J, wherein the population of inclusion bodies is characterized by a delta breaking strength of 400% or less, or 350% or less, preferably 300% or less, more preferably 250% or less, more preferably 200% or less, more preferably 150% or less, more preferably 100% or less, more preferably 75% or less. L. The consumer product composition of any one of paragraphs A-K, wherein the population of inclusion bodies is further characterized by one or more of the following: (i) a 5th percentile volume weighted particle size of about 1 micron to about 15 microns, preferably about 5 microns to about 10 microns; (ii) a 50th percentile (median) volume weighted particle size of about 15 microns to about 45 microns, preferably about 25 microns to about 40 microns; (iii) a 90th percentile volume weighted particle size of about 20 microns to about 65 microns, preferably about 25 microns to about 50 microns; or (iv) a combination thereof. M. The core further comprises a partitioning modifier, preferably the partitioning modifier is a vegetable oil, modified vegetable oil, C4-C 24 The consumer product composition of any one of paragraphs A-L, comprising 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, more preferably isopropyl myristate. N. the shell of the encapsulation body further comprises 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, carboxymethyl hydroxyethyl cellulose. The consumer product composition of any one of paragraphs A-M, wherein the modified cellulose is selected from the group consisting of 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. O. The consumer product composition of any one of paragraphs A-N, wherein the population of inclusion bodies described is a first population of inclusion bodies, and the composition further comprises a second population of inclusion bodies, wherein the inclusion bodies of the second population comprise a core and a shell surrounding the core, the core comprising a benefit agent, and preferably the inclusion bodies of the second population are characterized by one or more of the following compared to the first population of inclusion bodies: a different core composition, a different benefit agent, a different shell, a different core:shell weight ratio, a different volume-weighted median particle size, a different 5th percentile volume-weighted particle size, a different 90th percentile volume-weighted particle size, a different broadness index, a different delta breaking strength, a different mean breaking strength of particles of the 5th percentile volume-weighted particle size, a different mean breaking strength of particles of the 90th percentile volume-weighted particle size, or combinations thereof. P. The consumer product composition of any one of paragraphs A-O, wherein 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. Q. The consumer product composition of any one of paragraphs A-P, wherein the composition is 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, preferably a fabric care composition, preferably a fabric care composition that 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. R. The consumer product composition of any one of paragraphs A-Q, 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, a pastille or bead, a fibrous article, a tablet, a stick, a bar, a flake, a foam / mousse, a nonwoven sheet, or a mixture thereof. S. A method of treating fabric laundry, the method comprising contacting the fabric laundry with a treatment liquor, the treatment liquor comprising a composition according to any one of paragraphs A-R diluted with water, preferably wherein the fabric laundry comprises at least two textile materials. T. The method of paragraph S, wherein the fabric laundry comprises a first fabric material that is 100% cotton and a second fabric material that is not 100% cotton, preferably the second fabric material is selected from polyester, synthetic blends, or mixtures thereof. U. The method of paragraph S or T, wherein the first textile material is part of a first article or a first garment and the second textile material is part of a second article or a second garment.

[0155] Test Method It is understood that the test methods disclosed in the Test Methods section of this application should be used to measure the values of each of the parameters of the applicant's claimed subject matter as claimed and described herein.

[0156] Extraction of delivery particles from the final product. Unless otherwise indicated herein, the preferred method for isolating delivery particles from the final product is based on the fact that the density of most such delivery particles is different from that of water. The final product is mixed with water to dilute and / or release the particles. The diluted product suspension is centrifuged to accelerate particle separation. Such delivery particles tend to float or sink in the diluted 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 dilution and centrifugation rounds to separate and concentrate the delivery particles. The particles are observed at a total magnification of 100x to 400x using an optical microscope equipped with a cross-polarization filter or differential interference contrast (DIC). Microscopic observation provides an early indication of the presence, size, and aggregation of delivery particles.

[0157] 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 strengthener into three separate 50 mL centrifuge tubes, dilute each with aliquot:deionized water at a 1:1 ratio (e.g., 20 mL fabric strengthener + 20 mL deionized water), mix each aliquot well, and centrifuge each aliquot for 30 minutes at approximately 10,000 x g. 2. After the centrifugation in step 1, discard the bottom aqueous layer (approximately 10 mL) in each 50 mL centrifuge tube, and 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, 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 (total of six times).

[0158] If both a top and bottom layer enriched in delivery particles are present in step 1 above, proceed immediately to step 3 (i.e., skip step 2) and proceed with steps 4-8. After completing these steps, use a spatula and / or pipette to remove the bottom layer from the 50 mL centrifuge tube from step 1. Transfer the bottom layer to a 1.8 mL centrifuge tube and centrifuge at approximately 20,000 x g for 5 minutes. Remove the bottom layer in the new tube, add deionized water until the tube is completely filled, and then centrifuge at approximately 20,000 x g for 5 minutes. Remove the top layer (water) and add deionized water until the tube is again filled. Repeat this five more times (for a total of six times). Combine the top and bottom layers, enriched and isolated with delivery particles, together again.

[0159] If the fabric enhancer is white or the 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.

[0160] To extract inclusion bodies from solid end products that disperse readily 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 water-soluble matrices such as salt, sugar, clay, and starch). When extracting particles from end products that do not disperse readily in water, such as wax, dryer sheets, dryer bars, and greasy materials, it may be necessary to add detergent to the product and dilution liquid, and to stir and / or gently heat the particles to release them from the matrix. The use of organic solvents or drying of the particles during the extraction process should be avoided, as these operations may damage the delivery particles during this stage.

[0161] For extraction of delivery particles from liquid final products that are not fabric softeners or fabric enhancers (e.g., liquid laundry detergent, liquid dishwashing detergent, liquid hand soap, lotion, shampoo, conditioner, and hair dye), 20 mL of the final product is mixed with 20 mL of deionized water. If necessary, NaCl (e.g., 1-4 g NaCl) may be added to the diluted suspension to increase the density of the solution and promote floating of the inclusion bodies to the top layer. If the product has a white color that makes it difficult to distinguish the particle layers formed during centrifugation, a water-soluble dye may be added to the diluent to provide visual contrast.

[0162] The water-product mixture is subjected to successive rounds of centrifugation, involving removal of the top and bottom layers and resuspension of these layers in fresh diluent, followed by further centrifugation, isolation, and resuspension. Each round of centrifugation is performed in tubes ranging from 1.5 to 50 mL in volume, using a centrifugal force of up to 20,000 × g for 5 to 30 minutes. At least six rounds of centrifugation are typically required to extract and purify enough particles for testing. For example, the first round of centrifugation may be performed in a 50 mL tube spun at 10,000 × g for 30 minutes, followed by five more rounds of centrifugation, in which material from the top and bottom layers is separately resuspended in fresh diluent in 1.8 mL tubes and spun at 20,000 × g for 5 minutes per round.

[0163] If delivery particles are observed microscopically in both the top and bottom layers, the particles from these two layers are recombined after a final centrifugation step to create a single sample containing all of the delivery particles extracted from the product. The extracted particles should be analyzed as soon as possible, but may be stored as a deionized water suspension for up to 14 days before analysis.

[0164] Those skilled in the art will recognize that various other procedures can be developed to extract and isolate delivery particles from the final product, and that such methods require validation through comparison of measurements taken before and after adding and extracting the particles from the final product.

[0165] 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 the raw slurry of inclusion bodies in an amount such that 1 g (or otherwise indicated amount) of encapsulated perfume (e.g., 1 g of perfume oil not including shell and / or partitioning modifier, if present) is present in each sample. b.) One sample of the raw inclusion body slurry is added to a suitable amount of product matrix (e.g., a liquid detergent product or LFE product) in which the inclusion bodies will be used to form a total of 100 g of mixture (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 inclusion body slurry is used immediately in its undiluted form without contacting the product matrix and is labeled Sample 2. c.) Age the inclusion-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.) Use filtration to recover particles from both samples. After the aging process, recover the particles in Sample 1 (in the product matrix). At the same time that the aging process begins for Sample 1, recover the particles in Sample 2 (undiluted raw slurry). e.) Treating the recovered particles with a solvent to extract the benefit agent material from the 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, represented by the following equation:

[0166]

number

[0167] 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 seconds -1 The low shear viscosity at this point was measured at 0.01 seconds after 3 minutes at 21°C. -1 ~25 seconds -1 is obtained from a logarithmic shear rate sweep.

[0168] Fragrances, Perfume Raw Materials (PRMs), and / or Partition Modifiers A. Identity and Amount Gas chromatography with mass spectrometry / flame ionization detector (GC-MS / FID) is used to determine the identity and quantify the total weight of the perfume, perfume ingredient, or perfume raw material (PRM) encapsulated in the capsule slurry and / or delivery agent encapsulates. Suitable equipment includes an Agilent Technologies G1530A GC / FID; a Hewlett Packer Mass Selective Device 5973; and a 5%-phenyl-methylpolysiloxane column J&W DB-5 (30 m length x 0.25 mm internal diameter x 0.25 μm film thickness). Approximately 3 g of the final product or suspension of delivery encapsulates is weighed and its weight is recorded. The sample is then diluted with 30 mL of deionized water and filtered through a 5.0 μm pore size nitrocellulose filter membrane. The material trapped 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 fragrance oils are used as comparison standards. 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. PRMs are identified from their mass spectrometry peaks.

[0169] B. Amount of Unencapsulated Material To determine the amount of unencapsulated flavor and (optionally) partitioning modifier 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.

[0170] [Table 2]

[0171] To prepare the fragrance standard in ISS Hexane, weigh 0.050±0.005g of the desired PMC perfume oil into a 50mL volumetric flask (or other volume size, recalculating the grams of perfume oil to add). Fill to the line with ISS Hexane solution from above. ISS Hexane is 0.1g of tetradecane in 4 liters of hexane.

[0172] 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.

[0173] To prepare a sample of the PMC composition (e.g., slurry), ensure the composition (e.g., slurry) is thoroughly mixed. Mix as necessary. Weigh a 0.3 ± 0.05 g sample of the composition into the bottom of a 10 mL vial. Avoid sticking the composition to the walls of the vial.

[0174] To operate the instrument, a target ion for quantification of each PRM (and optionally a partitioning modifier) is determined, along with at least one, preferably two, qualifier ions. A calibration curve is generated from fragrance standards for each PRM. Using the sample weight and individual PRM weight percentages, the integrals and quantities of the extracted ions (EICs) for each PRM are plotted or recorded.

[0175] 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 optionally partitioning modifiers.

[0176] C. Measurement of encapsulation materials The weight of the encapsulated oil and optionally the partitioning modifier is determined 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).

[0177] Wall material analysis This method measures the amount of wall material. First, the wall material of particles with a particle size greater than 0.45 micrometers is isolated by dead-end filtration. Subsequent analysis by thermogravimetric analysis allows the removal of inorganic materials and other (organic) raw slurry components.

[0178] A. Sample Preparation This procedure applies dead-end filtration to remove the soluble fraction of the sample. Different solvents are used sequentially to maximize the removal of interfering substances before TGA analysis.

[0179] 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 500mL or 1000mL. Filtration cup: e.g., a 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 100-250 mL, graduated cylinders 50-250 mL). ●Drying equipment ○ Vacuum oven and vacuum pump (setting 60-70C / vacuum: 30 inches mercury vacuum). Desiccator or humidity chamber (keeps residue in a controlled environment while cooling) Solvent All solvents: analytical grade minimum: 2-propanol, acetone, chloroform.

[0180] The filtration procedure is as follows: To prepare the filtration device, a pre-dried filtration device (e.g., a Milli-cup filter) is reduced in weight to 0.1-0.2 mg. Pre-drying involves the same drying process that is performed on the filter after filtration is complete.

[0181] Filter the sample by weighing 1-2 grams of slurry material (Note: Reduce to 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 and use heat to flocculate the sample. Place the filtration apparatus on the filtration bottle and begin filtration under 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.

[0182] Calculate the percent residue (weight residue) by dividing the weight difference between the filter + residue weight and the filter weight only (=net weight of residue after filtration) by the raw slurry sample weight and multiplying by 100 to obtain the unit %. Proceed to determine the % residue by TGA analysis.

[0183] 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 connected to a Nicolet Nexus 470 FTIR spectrometer for evolved gases.

[0184] 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 remaining (burned) perfume compounds. This weight loss is used to calculate 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.

[0185] Analytical measurement of core:wall ratio If the core input and wall material input are not readily available, the core:wall ratio of the inclusion bodies may be determined analytically using the methods described herein.

[0186] More specifically, the above method allows for the determination of the amounts (by weight) of flavor, partition modifier, and wall material in a flavor capsule composition (e.g., a slurry), and the above method can be used to calculate the core:wall ratio, which is done by dividing the total amount (by weight) of flavor plus partition modifier found in the composition by the amount (by weight) of crosslinked wall material found in the composition.

[0187] Test Method 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 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 yields unitless logP values. The ACD / Labs Consensus logP Computational Model is part of the ACD / Labs model suite.

[0188] Volume-weighted particle size and particle size distribution Volume-weighted capsule particle size distribution was determined by single particle optical detection (SPOS), also known as 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 was configured with the following settings and options: flow rate = 1 mL / s; minor 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. Measurements were initiated by cold-conditioning the sensor by flushing with water until the background count was less than 100. A sample of delivery capsules in suspension was introduced, and the capsule density was adjusted with deionized water as needed by autodilution to achieve a capsule count of at least 9200 / mL. The suspension is analyzed for 60 seconds. The resulting volume-weighted PSD data is plotted and recorded to determine desired volume-weighted particle size values (e.g., median / 50th percentile, 5th percentile, and / or 90th percentile).

[0189] The broadness index can be calculated by determining the delivered particle size beyond which 90% of the cumulative particle volume is accounted for (90% particle size), the delivered particle size beyond which 5% of the cumulative particle volume is accounted for (5% particle size), and the volume-weighted median particle size (50% particle size - particle volume above and below this size both make up 50% of the particle volume). Broadness index = ((90% particle size) - (5% particle size)) / 50% particle size).

[0190] Breaking Strength Test Method To measure the mean fracture strength of a population and / or to determine the delta fracture strength, three different measurements are made: i) the volume-weighted capsule particle size distribution; ii) the diameter of 10 individual capsules within each of the three specified particle size ranges (and / or 30 individual capsules of the volume-weighted median particle size if mean fracture strength is to be determined), and iii) the burst force of these same 30 individual capsules. a.) Determine the volume-weighted capsule particle size distribution as described above. Plot and record the resulting volume-weighted PSD data, and determine the median, 5th percentile, and 90th percentile values. b.) The diameter and rupture-force values (also known as bursting-force values) of individual capsules were measured using a custom computer-controlled micromanipulation instrument system 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, 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, available from the University of Birmingham (Edgbaston, Birmingham, UK), equipped with a lens and camera capable of imaging the delivery particles and equipped with a fine, flat-tipped probe connected to a force transducer (such as a Model 403A available from Aurora Scientific Inc., Canada). c.) Place a drop of the delivery capsule suspension on a microscope slide and allow it to dry under ambient conditions for several minutes to remove water and obtain a sparse, single layer of isolated capsules on the dry slide. Adjust the capsule concentration in the suspension as needed to obtain the appropriate capsule density on the slide. Preparation of more than one slide may be required. d.) The slide is then placed on the sample holding stage of the micromanipulation instrument. 30 beneficial agent delivery capsules on the slide are selected for measurement, with 10 capsules selected in each of three predetermined size ranges. Each size range refers to the capsule diameter derived from the volume-weighted PSD generated by the Accusizer. e.) The three particle size ranges for capsules are median / 50th percentile diameter ± 2 μm, 5th percentile diameter ± 2 μm, and 90th percentile diameter ± 2 μm. Shrunk, leaking, or damaged capsules are excluded from the selection process and will not be measured. i. If sufficient capsules are not available in a particular particle size range of ±2 μm, the particle size range may be increased to ±5 μm. ii. When determining the mean breaking strength of a population, 30 (or more) capsules in the median / 50th percentile size range may be measured. f.) For every 30 selected capsules, the diameter of the capsule is measured and recorded from the image on the micromanipulator. 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 / s, causing the capsule to rupture. During the compression step, the probe force is continuously measured and recorded by the micromanipulation instrument's data acquisition system. g.) Calculate the cross-sectional area for each selected capsule using the measured diameter and assuming a spherical capsule (πr 2(where r is the radius of the capsule before compression). The burst force is determined from force probe measurements recorded 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. h.) Calculate the breaking strength of each of the 30 capsules by dividing the burst force (in Newtons) by the calculated cross-sectional area of each capsule. i.) Calculation: The mean breaking strength of the population is determined by averaging the breaking strength values of (at least) 30 capsules in the median / 50th percentile particle size range.

[0191] The delta breaking strength is calculated as follows:

[0192]

number

[0193] The examples provided below are intended to be illustrative and not limiting in nature.

[0194] Example 1. Exemplary synthesis of a population of inclusion bodies (98:2 core:wall ratio) 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, along with alternative wall monomers.

[0195] To a 1 L water-jacketed stainless steel reactor, 143.12 grams of perfume oil and 137.45 grams of isopropyl myristate are added and mixed under a nitrogen atmosphere using a high shear mixer equipped with a mill blade. ℃ After heating to 0.33 grams of Vazo 67 (initiator) was introduced, and the whole mixture was then heated to 70 ℃ and maintained at that temperature for 45 minutes. ℃ 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 cooled to 50°C. ℃ The mixture is then mixed for 10 minutes while maintaining the temperature at 75°C. The agitation is then stopped, and an aqueous phase consisting of 107 grams of emulsifier (5% PVOH 540 solution), 340.03 grams of RO water, 0.22 grams of V-501, and 0.21 grams of NaOH (21% solution) is added to the reactor. After the aqueous phase is added, milling is performed until the particle size is reached. The emulsion is then milled using the initial 75°C milling. ℃ and maintained at that temperature for 240 minutes, then heated to 95°C over 360 minutes. ℃ After heating to 25 ℃ Cool to RT. At that point, discharge the slurry from the reactor into a container and add the rheology modifier (1.59 grams of xanthan gum) and preservative (0.61 grams of Acticide BWS-10). Allow the rheology modifier to mix for 30 minutes. Add the preservative last and allow to mix for 5-10 minutes. The final slurry is then characterized, tested, and deemed acceptable.

[0196] 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.

[0197] Core:Wall Weight Ratio - Sample Calculation The core:wall weight ratio is determined by dividing the weight of the total core material input (e.g., perfume oil and partitioning modifier) by the weight of the total wall material input (e.g., wall monomer and initiator). Alternatively, the relative percentage of core material in the particle population can be determined by dividing the total weight of core material input by the sum of the total weight of core material input + the total weight of wall material input, and multiplying by 100. 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 the particle population can be determined by dividing the total weight of wall material input by the sum of the total weight of core material input + the total weight of wall material input, and multiplying by 100.

[0198] Provided below is a sample calculation for a "98:2" capsule formed according to the Examples of this section, where the core comprises perfume oil and partitioning modifier (isopropyl myristate), and the wall comprises wall monomers (CN975, CD9055, and TBAEMA) and initiators (Vazo67 and V-501).

[0199]

number

[0200] [Table 3]

[0201] Example 2. Sample population of inclusion bodies Exemplary populations of inclusion bodies are prepared substantially according to the synthetic procedures described above in Example 1. The population differences are provided below in Table 2A.

[0202] Examples 1A and 1B are comparative examples of encapsulates present in commercially available fabric care products. The encapsulates of Examples 1A and 1B, for example, have core:shell weight ratios outside the inventive range of the present disclosure. The amount of initiator is provided as a percentage of the total wall material (e.g., monomer + initiator).

[0203] [Table 4] 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

[0204] The inclusion body populations of Examples 1A, 1B, and 2-12 are analyzed for volume-weighted inclusion body particle size at various points (5%, 50%, and 90%) of the particle size distribution, and the breaking strength at each point is determined. From this data, the broadness index and delta breaking strength are determined according to the test methods provided above. The results are provided in Table 2B.

[0205] [Table 5]

[0206] Figure 1 shows graphs of several examples from Tables 2A and 2B above, plotting inclusion body particle size at d5, d50, and d90 against their respective breaking strengths. As shown in the graph of Figure 1 and Table 2B above, Comparative Example 1A exhibits a J-shaped curve in which the breaking strength at d5 is relatively higher than the breaking strengths at d50 and d90. For example, for the inclusion bodies of Example 1A, the breaking strength at d5 is 14.2 MPa, and the breaking strength at d90 is 1.1 MPa, an absolute difference of 13.1 MPa.

[0207] On the other hand, Examples 2, 4, and 10 according to the present disclosure show relatively flat curves compared to Comparative Example 1A, indicating that the difference in breaking strength across the particle size distribution of the population of the present invention is relatively small. For example, for the inclusion bodies of Example 2, the breaking strength at d5 is 3.0 MPa and the breaking strength at d90 is 1.9 MPa, an absolute difference of only 1.2 MPa.

[0208] As discussed above, this slight difference is believed to result in improved performance, for example, by providing relatively consistent performance across inclusion particle sizes.

[0209] Example 3. Performance Data To compare inclusion bodies with different core:shell ratios and different particle sizes, four different inclusion body populations are provided, with the inclusion bodies in each population containing the same material, primarily CN975 monomer, in their respective wall polymers.

[0210] The same perfume is used for each type of encapsulant, and each core also contains approximately 40% by weight of a partitioning modifier (i.e., isopropyl myristate). The particles are each added in an amount to provide 0.158% perfume by weight of the fabric enhancer product composition.

[0211] Table 3A below provides further information regarding the inclusions tested. Capsule types 1 and 3 are comparative examples (Asterix " * "). Table 3A also indicates which exemplary population from Example 2 (see above) each capsule type most closely resembles, including characteristics related to broadness index.

[0212] [Table 6]

[0213] Samples of a liquid fabric enhancer (containing 7% by weight of an ester quat as the softening active) are prepared using four different inclusion body populations.

[0214] Four different fabric types are treated with the fabric strengthener (in combination with a mixed fabric load) in an automatic washing machine (1200 rpm) on a short cotton cycle, with the fabric strengthener being added during the final rinse cycle. The fabrics are listed in Table 3B.

[0215] [Table 7]

[0216] After the fabrics are treated, perfumers perform olfactory assessments of perfume intensity at friction touchpoints, dry touchpoints, and wet touchpoints, and the scores at each touchpoint are averaged to obtain a score for that touchpoint. 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 = very strong perfume odor. Additionally, headspace data on the treated fabrics at each touchpoint is collected using a solid phase microextraction (SPME) headspace approach with gas chromatography mass spectrometry (GCMS).

[0217] The results are provided in Table 3C (olfactory results) and Table 3D (headspace results). In addition, the average score or value for a given capsule on a given fabric across the three touch points is provided ("touch point average"), the average score for a given capsule on a given fabric across the four fabric types is provided ("average across fabrics"), and the difference between the highest and lowest value across fabric types for any given capsule type and touch point is provided ("delta (high-low) across fabrics").

[0218] [Table 8] * Comparative Example

[0219] [Table 9] * Comparative Example

[0220] According to the results provided in Tables 3C and 3D, the encapsulated bodies according to the present disclosure tend to perform better in friction touchpoints and dry touchpoints compared to comparable encapsulated bodies of the same particle size, particularly in olfactory testing (Capsule 2 vs. Capsule 1). * and Capsule 4 and Capsule 3 * (Compare friction scores and dryness scores).

[0221] Additionally, the encapsulates according to the present disclosure appear to provide a higher olfactory / fragrance intensity score across the three touch points on any given fabric compared to comparable encapsulates of the same particle size (Capsule 2 vs. Capsule 1). * and Capsule 4 and Capsule 3 * (Compare average touch points for each device).

[0222] The data also show that both Capsule 2 and Capsule 4 (encapsulations according to the present disclosure) performed well, with larger encapsulations (e.g., 36 μm) tending to be preferred over smaller encapsulations (18 μm), especially in olfactory testing at dry and friction touchpoints.

[0223] Furthermore, while the olfactory and headspace values tend to be relatively lower for capsules of the present invention compared to comparable capsules of the same particle size at wet touchpoints, the difference between the high and low values (e.g., "delta across fabric") is often relatively lower for encapsulates according to the present disclosure. For example, Capsule 2 vs. Capsule 1 * (45 vs 92) and Capsule 4 vs Capsule 3 * See "Delta across fabrics" for wet touchpoints (202 vs. 79). The lower delta value indicates that the wet performance of capsules according to the present disclosure is relatively more consistent across fabric types than the comparative capsules.

[0224] Example 4. Exemplary Formulation - Liquid Fabric Enhancer Table 4 shows exemplary formulations of compositions according to the present disclosure. Specifically, the following compositions are liquid fabric enhancer products.

[0225] [Table 10] 1 Primary ester: a mixture of bis-(2-hydroxypropyl)-dimethylammonium methyl sulfate fatty acid ester, (2-hydroxypropyl)-(1-methyl-2-hydroxyethyl)-dimethylammonium methyl sulfate fatty acid ester, and bis-(1-methyl-2-hydroxyethyl)-dimethylammonium methyl sulfate fatty acid ester, which are produced from a mixture of C12 to C18 fatty acids (REWOQUAT DIP V 20 M Concentrate, manufactured by Evonik). 2 Secondary ester: N,N-bis(hydroxyethyl)-N,N-dimethylammonium chloride fatty acid ester produced from a mixture of C12 to C18 fatty acids (REWOQUAT CI-DEEDMAC, manufactured by Evonik) 3 Tertiary esters: esterification products of fatty acids (C16-18 and C18 unsaturated) with triethanolamine, quaternized with dimethyl sulfate (REWOQUAT WE 18, Evonik). * Delivery particles according to the present disclosure, for example, the population formed above in Example 1. The "% Active" provided is the amount of fragrance delivered in the composition.

[0226] Example 5. Exemplary Formulation - Laundry Additive Particles Table 5 shows exemplary formulations of compositions according to the present disclosure. Specifically, the following compositions are laundry additive particles in the form of lozenges or "beads" similar in form to those sold as DOWNY UNSTOPABLES (manufactured by The Procter & Gamble Co.).

[0227] [Table 11] 1 PLURIOL E8000 (BASF) 2 Esterification products of fatty acids (C16-18 and C18 unsaturated) with triethanolamine, quaternized with dimethyl sulfate (REWOQUAT WE 18, Evonik) 3 Cationic modified hydroxyethyl cellulose 4 Fragrance delivery particles according to the present disclosure, for example, the population formed in Example 1 above. The % provided is the amount of aqueous slurry provided in the composition, the slurry comprising approximately 45% by weight of delivery particles (core + shell).

[0228] 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."

[0229] 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 benefit, 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.

[0230] 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 processing aid and a population of inclusion bodies, The encapsulation body comprises a core and a shell surrounding the core, the shell comprises an acrylate material; the core comprises a benefit agent; the core and the shell are present in the population in a core:shell weight ratio of 96:4 to 99:1; the population of inclusion bodies is characterized by a broadness index of at least 1.0 and a delta break strength of less than 400%; The consumer product composition, wherein the acrylate material comprises a (meth)acrylate polymer derived from a multifunctional (meth)acrylate monomer or oligomer, including a multifunctional aromatic urethane acrylate.

2. The population of inclusion bodies is a first inclusion body of a fifth percentile volume-weighted particle size characterized by a first average breaking strength; a second inclusion body of a 90th percentile volume-weighted particle size characterized by a second average breaking strength; below: i) the first average breaking strength and the second average breaking strength are each independently 0.5 to 10 MPa; and / or ii) the difference between the first average breaking strength and the second average breaking strength is less than 10 MPa; 10. The consumer product composition of claim 1, wherein at least one of the following is true:

3. 3. The consumer product composition of claim 1 or 2, wherein the multifunctional (meth)acrylate monomer or oligomer comprises a hexafunctional aromatic urethane acrylate.

4. The consumer product composition of any one of claims 1 to 3, wherein the acrylate material is derived from at least two different monomers or oligomers.

5. The consumer product composition of any one of claims 1 to 4, wherein the (meth)acrylate polymer is further derived, at least in part, from at least one free radical initiator.

6. 6. The consumer product composition of any one of claims 1 to 5, wherein the core and the shell are present in a core:shell weight ratio of from 97:3 to 99:

1.

7. 7. The consumer product composition of any one of claims 1 to 6, wherein the population of inclusion bodies is characterized by a broadness index of at least 1.

1.

8. 8. The consumer product composition of any one of claims 1 to 7, wherein the population of inclusion bodies is characterized by a delta breaking strength of 350% or less.

9. The consumer product composition of any one of claims 1 to 8, wherein the core further comprises a partitioning modifier.

10. The population of inclusion bodies of claim 1 is a first population of inclusion bodies, the composition further comprises a second population of inclusion bodies; the second population of encapsulates comprises a core and a shell surrounding the core, the core comprising a benefit agent; The inclusion bodies of the second population, compared to the first population of inclusion bodies, have: different core compositions, different benefit agents, different shells, different core:shell weight ratios, different volume weighted median particle sizes, different 5th percentile volume weighted particle sizes, different 90th percentile volume weighted particle sizes, different broadness index, different delta breaking strength, different mean breaking strength of particles at 5th percentile volume weighted particle size, different mean breaking strength of particles at 90th percentile volume weighted particle size, or combinations thereof.

10. The consumer product composition of claim 1, characterized by one or more of:

11. 11. The consumer product composition of any one of claims 1 to 10, wherein 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 perfume, additional perfume delivery systems, structural elastomers, carriers, hydrotropes, processing aids, anti-agglomerating agents, coatings, formaldehyde scavengers, pigments, and mixtures thereof.

12. 12. The consumer product composition of any one of claims 1 to 11, wherein the composition is 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.

13. 1. A method of treating fabric laundry, the method comprising contacting the fabric laundry with a treatment liquor; A method wherein the treatment liquid comprises the composition of any one of claims 1 to 12 diluted with water.

14. 14. The method of claim 13, wherein the fabric laundry comprises a first fabric material that is 100% cotton and a second fabric material that is not 100% cotton.

15. 15. The method of claim 14, wherein the first textile material is part of a first article or a first garment and the second textile material is part of a second article or a second garment.

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