阅读说明：本技术 包含有益剂胶囊的织物处理组合物 (Fabric treatment composition comprising benefit agent capsules ) 是由 约翰·斯梅茨 C·E·A·朱斯 帕斯卡莱·克莱尔·扬尼克·凡斯廷温克尔 于 2019-08-14 设计创作，主要内容包括：本发明涉及织物处理组合物及其使用。此类织物处理组合物包含有益剂胶囊和联苯增白剂。此类织物处理组合物表现出改善的有益剂胶囊在织物上、尤其是棉织物上的沉积。(The present invention relates to fabric treatment compositions and uses thereof. Such fabric treatment compositions comprise benefit agent capsules and a biphenyl brightener. Such fabric treatment compositions exhibit improved deposition of benefit agent capsules onto fabrics, especially cotton fabrics.)

1. A fabric treatment composition comprising:

a) a benefit agent capsule, wherein said benefit agent capsule comprises a shell material encapsulating a core material, wherein said shell material is derived from polyvinyl alcohol and a shell component, wherein said shell component is selected from the list consisting of: polyacrylates, polyamines, melamine formaldehyde, polyureas, polyurethanes, polysaccharides, modified polysaccharides, urea crosslinked with formaldehyde, urea crosslinked with glutaraldehyde, silica, sodium silicate, polyesters, polyacrylamides, and mixtures thereof; the core material comprises a benefit agent;

b) a biphenyl brightener having the formula:

wherein M is a suitable cation.

2. A fabric treatment composition according to claim 1, wherein the shell component is selected from the list consisting of: polyacrylates, polyamines, polyureas, polyurethanes, polysaccharides, modified polysaccharides, urea crosslinked with formaldehyde, urea crosslinked with glutaraldehyde, silica, sodium silicate, polyesters, polyacrylamides, and mixtures thereof; preferably, the shell component is selected from the list consisting of: polyamines, polyureas, polyurethanes, polyacrylates, and mixtures thereof; more preferably, the shell component is selected from the group consisting of polyureas, polyacrylates, and mixtures thereof.

3. A fabric treatment composition according to any preceding claim, wherein the biphenyl brightener is present at a level of from 0.01% to 2%, preferably from 0.04% to 1.5%, more preferably from 0.06% to 1%, most preferably from 0.1% to 0.5% by weight of the fabric treatment composition.

4. A fabric treatment composition according to any preceding claim, wherein the polyvinyl alcohol is present at a level of from 0.01% to 20%, preferably from 0.05% to 10%, even more preferably from 0.1% to 5%, most preferably from 0.1% to 2% by weight of the benefit agent capsule.

5. A fabric treatment composition according to any preceding claim, wherein the polyvinyl alcohol has a degree of hydrolysis of from 70% to 99%, preferably from 75% to 98%, more preferably from 80% to 96%, most preferably from 82% to 96%.

6. A fabric treatment composition according to any preceding claim, wherein the polyvinyl alcohol has a viscosity of from 2 to 150mpa.s, preferably from 3 to 70mpa.s, more preferably from 4 to 60mpa.s, most preferably from 5 to 55mpa.s, as a 4 wt% aqueous solution.

7. A fabric treatment composition according to any preceding claim, wherein the weight ratio of polyvinyl alcohol to biphenyl brightener is from 1/1 to 1/5000, preferably from 1/2 to 1/2000, more preferably from 1/5 to 1/1000, most preferably from 1/10 to 1/500.

8. A fabric treatment composition according to any preceding claim, wherein the ratio of biphenyl brightener to benefit agent capsules is from 50/1 to 1/500, more preferably from 10/1 to 1/250, most preferably from 5/1 to 1/100.

9. A fabric treatment composition according to any preceding claim, wherein the core material comprises a perfume.

10. A fabric treatment composition according to any preceding claim, wherein the fabric treatment composition further comprises a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, zwitterionic surfactants, and combinations thereof.

11. A fabric treatment composition according to any preceding claim, wherein surfactant is present in an amount of from 1 to 70 wt%, preferably from 10 to 40 wt%, more preferably from 15 to 30 wt%, by weight of the fabric treatment composition.

12. A fabric treatment composition according to any preceding claim, wherein benefit agent capsules are present at a level of from 0.01 wt% to 10 wt%, from 0.03 wt% to 5 wt%, from 0.05 wt% to 4 wt% by weight of the fabric treatment composition.

13. The fabric treatment composition of, wherein the biphenyl whitening agent is pre-mixed prior to addition to the remaining ingredients, and wherein the pre-mix comprises the biphenyl whitening agent, water, and a component selected from the list consisting of: organic solvents, nonionic surfactants, and mixtures thereof; preferably wherein the organic solvent is 1, 2-propanediol.

14. A wash water comprising the fabric treatment composition according to any preceding claim, wherein the biphenyl brightener is present in an amount of from 0.1ppm to 50ppm, preferably from 1ppm to 30ppm, more preferably from 2ppm to 20ppm, by weight of the wash water.

15. Use of a biphenyl brightener in a composition according to any one of the preceding claims to increase the deposition of benefit agent capsules on a fabric, preferably wherein the fabric is cotton fabric.

Technical Field

The present invention relates to fabric treatment compositions comprising benefit agent capsules and a biphenyl brightener, and uses thereof.

Background

Fabric treatment compositions for use in laundry washing processes provide benefits to fabrics delivered by benefit agents. One example of such a benefit is the maintenance of the bright appearance provided by the whitening agent. Another example is a pleasant smell provided by a fragrance. One problem in the art is that many benefit agents, especially perfumes, are not deposited or rinsed off during fabric treatment. Since perfumes and other benefit agents are expensive components, encapsulation can be used to improve the delivery of benefit agents during use. Benefit agent capsules typically contain a benefit agent until the capsule breaks during use, thereby releasing the benefit agent. Thus, when the benefit agent capsules containing the perfume are broken, the perfume release provides a freshening benefit.

However, effective deposition of benefit agent capsules onto treated fabrics remains a challenge, particularly where the benefit agent capsules are contained in a fabric treatment composition that is diluted into a wash solution during use for treating surfaces such as fabric fibers (e.g., laundry detergents or fabric softeners). It has previously been determined that deposition aids can improve deposition of benefit agent capsules. However, the addition of deposition aids to fabric treatment compositions requires increased cost and complexity at the manufacturing facility, as additional ingredients require additional pumping and storage tanks.

Thus, there remains a need to improve the deposition of benefit agent capsules on fabrics to enhance the delivery of benefit agents, thereby providing longer lasting benefits during and after use of the fabric treatment composition while minimizing the cost and complexity of the fabric treatment composition formulation.

WO2016049456a1 relates to an aggregate of capsules comprising two or more beneficial particles, each comprising an active and a polymeric material immobilizing the active; one or more binder polymers, each having a negatively charged or capable of negatively charged anionic chemical group; and one or more deposition polymers, each having a cationic chemical group that is or can be positively charged. WO201701385 relates to benefit agent capsules coated by a specific mixture of copolymers. US20170189283a1 relates to microcapsule compositions comprising benefit agent capsules coated with a deposition protein, such as a protein-silanol copolymer, a protein-silane copolymer, a protein-siloxane copolymer, or a cationically modified protein.

Disclosure of Invention

The present invention relates to a fabric treatment composition comprising benefit agent capsules, wherein the benefit agent capsules comprise a shell material, wherein the shell material is derived from polyvinyl alcohol and a shell component. The fabric treatment composition further comprises a surfactant and a biphenyl brightener.

The invention also relates to wash water comprising the fabric treatment composition.

The invention also relates to the use of such fabric treatment compositions to improve the deposition of benefit agent capsules.

It is an object of the present invention to improve the deposition of benefit agent capsules.

Detailed Description

Definition of

As used herein, the term "fabric treatment composition" is a subset of cleaning and treatment compositions, which, unless otherwise indicated, includes multi-functional or "heavy-duty" detergents, especially cleaning detergents, in granular or powder form; multipurpose detergents in the form of liquids, gels or pastes, especially the so-called heavy-duty liquid types; liquid fine fabric detergents; liquid cleaning and disinfecting agents, fabric conditioning products (including softening and/or freshening), which may be in liquid, solid and/or dryer paper form; and cleaning adjuvants such as bleach additives and "stain-stick" or substrate-laden pretreatment-type products such as dryer paper, dry and wet wipes and pads, nonwoven substrates and sponges; as well as sprays and mists. All such products that are applicable may be in standard, concentrated or even highly concentrated form, even to the extent that such products may be non-aqueous in some way.

As used herein, articles such as "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 "comprising," "including," and "containing" are intended to be non-limiting.

As used herein, the term "solid" includes granular, powder, bar, lentil, bead and tablet product forms.

As used herein, the term "fluid" includes liquid, gel, paste, slurry, and gaseous product forms.

Unless otherwise specified, all components or compositions are on average with respect to the active portion of that component or composition, and do not include impurities, such as residual solvents or by-products, that may be present in commercially available sources of such components or compositions.

All percentages and ratios are by weight unless otherwise indicated. All percentages and ratios are calculated based on the total composition, unless otherwise indicated.

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 will 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.

Fabric treatment composition

The fabric treatment composition according to the present invention comprises a benefit agent capsule, wherein the benefit agent capsule comprises a shell material encapsulating a core material, wherein the shell material is derived from polyvinyl alcohol and a shell component, wherein the shell component is selected from the list consisting of: polyamines, melamine formaldehyde, polyureas, polyurethanes, polysaccharides, modified polysaccharides, urea crosslinked with formaldehyde, urea crosslinked with glutaraldehyde, silica, sodium silicate, polyesters, polyacrylamides, and mixtures thereof; the core material comprises a benefit agent. The fabric treatment composition further comprises a biphenyl whitening agent and preferably at least 1% of a surfactant. The fabric treatment composition may be solid or liquid; preferably, the fabric treatment composition is a liquid.

Biphenyl whitening agent

The fabric treatment composition of the present invention comprises a biphenyl brightener having the formula

Wherein M is a suitable cation, preferably M is H⁺Or Na⁺More preferably M is Na⁺。

It has surprisingly been found that the biphenyl whitening agents according to the present invention provide improved deposition of benefit agent capsules, wherein the benefit agent capsules comprise a shell material encapsulating a core material, wherein the shell material is derived from polyvinyl alcohol and a shell component. Without being bound by theory, it is believed that deposition is improved by the interaction between the polyvinyl alcohol and the biphenyl whitening agent according to the present invention.

Examples of suitable biphenyl brighteners are available under the trade names:CBS-X, supplied by BASF; brightener CF-351-UP particles, supplied by Cenkey; CBX-X, supplied by Qingshan; megawhite DT, supplied by Meghmani; optical whitener 49# -E, supplied by Hongda; FL brightener 49CI 351, supplied by Alcochem; keyfluor^TMWhite ML, supplied by Milliken.

In preferred fabric treatment compositions, less than 1%, more preferably less than 0.01% of the total amount of biphenyl brightener in the fabric treatment composition is encapsulated in a benefit agent capsule according to the present invention. The unencapsulated biphenyl whitening agent provides a vivid appearance and improved benefit agent encapsulation deposition to the treated fabric.

In preferred fabric treatment compositions, the total level of biphenyl brightener is from 0.01% to 2%, preferably from 0.04% to 1.5%, more preferably from 0.06% to 1%, most preferably from 0.1% to 0.5% by weight of the composition.

In preferred fabric treatment compositions, the ratio of biphenyl brightener to benefit agent capsules is from 50/1 to 1/500, more preferably from 10/1 to 1/250, most preferably from 5/1 to 1/100.

In one aspect of the invention, the biphenyl brightener is present in the wash water comprising the fabric treatment composition in an amount of from 0.1ppm to 50ppm, preferably from 1ppm to 30ppm, more preferably from 2ppm to 20ppm, even more preferably from 2ppm to 10ppm by weight of the wash water.

The biphenyl whitening agent may be added separately to the fabric treatment composition comprising the remaining ingredients.

A preferred fabric treatment composition comprises a biphenyl brightener according to the present invention, wherein the biphenyl brightener is pre-mixed prior to addition to the remaining ingredients of the fabric treatment composition, and wherein the pre-mix comprises the biphenyl brightener, water, and a component selected from the list consisting of: organic solvents, nonionic surfactants, and mixtures thereof; preferably wherein the organic solvent is selected from the list consisting of diethylene glycol, monoethanolamine, 1, 2-propanediol and mixtures thereof, more preferably wherein the organic solvent is 1, 2-propanediol. The biphenyl brightener premix facilitates uniform distribution of the brightener throughout the fabric treatment composition. Without being bound by theory, applicants believe that the uniform distribution of the biphenyl whitening agent further improves the deposition of the benefit agent capsules on the fabric.

Beneficial agent capsule

The fabric treatment composition comprises a benefit agent capsule comprising a core material and a shell material encapsulating the core material, wherein the shell material is derived from polyvinyl alcohol and a shell component, wherein the shell component is selected from the list consisting of: polyacrylates, polyamines, melamine formaldehyde, polyureas, polyurethanes, polysaccharides, modified polysaccharides, urea crosslinked with formaldehyde, urea crosslinked with glutaraldehyde, silica, sodium silicate, polyesters, polyacrylamides, and mixtures thereof.

The level of benefit agent capsules may depend on the desired total level of free and encapsulated benefit agents in the fabric treatment composition. In preferred fabric treatment compositions, the benefit agent capsules are present at a level of from 0.01 wt% to 10 wt%, from 0.03 wt% to 5 wt%, from 0.05 wt% to 4 wt% by weight of the fabric treatment composition. Herein, "benefit agent capsule content" refers to the sum of shell material and core material.

In a preferred composition, the shell component is selected from the list consisting of: polyacrylates, polyamines, polyureas, polyurethanes, polysaccharides, modified polysaccharides, urea crosslinked with formaldehyde, urea crosslinked with glutaraldehyde, silica, sodium silicate, polyesters, polyacrylamides, and mixtures thereof; more preferably, the shell component is selected from the list consisting of: polyamines, polyureas, polyurethanes, polyacrylates, and mixtures thereof; even more preferably, the shell component is selected from the group consisting of polyureas, polyacrylates, and mixtures thereof; most preferably, the shell component is a polyacrylate.

The shell component may comprise from about 50% to about 100%, or from about 70% to about 100%, or from about 80% to about 100%, of the polyacrylate polymer. The polyacrylate may include a polyacrylate cross-linked polymer.

The shell material may comprise a material selected from the group consisting of: polyacrylates, polyethylene glycol acrylates, polyurethane acrylates, epoxy acrylates, polymethacrylates, polyethylene glycol methacrylates, polyurethane methacrylates, epoxy methacrylates, and mixtures thereof.

The shell material of the capsule may comprise a polymer derived from a substance comprising one or more multifunctional acrylate moieties. The multifunctional acrylate moiety may be selected from the group consisting of: trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates, hexafunctional acrylates, heptafunctional acrylates, and mixtures thereof. The multifunctional acrylate moiety is preferably a hexafunctional acrylate. The shell material may comprise a polyacrylate comprising a moiety selected from the group consisting of: acrylate moieties, methacrylate moieties, amine acrylate moieties, amine methacrylate moieties, carboxylic acid acrylate moieties, carboxylic acid methacrylate moieties, and combinations thereof, preferably amine methacrylate or carboxylic acid acrylate moieties.

The shell material may comprise a material comprising one or more multifunctional acrylate and/or methacrylate moieties. The ratio of material comprising one or more multifunctional acrylate moieties to material comprising one or more methacrylate moieties can be from about 999:1 to about 6:4, preferably from about 99:1 to about 8:1, more preferably from about 99:1 to about 8.5: 1.

In one aspect, the shell component is a polyurea or polyurethane. Capsules of shell components derived from polyurea or polyurethane may be prepared using one or more polyisocyanates and one or more crosslinkers.

Polyisocyanates are molecules having two or more isocyanate groups, i.e. O ═ C ═ N ", where the polyisocyanates can be aromatic, aliphatic, linear, branched or cyclic. In certain embodiments, the polyisocyanate contains an average of 2 to 4-N ═ C ═ O groups. In a particular embodiment, the polyisocyanate comprises at least three isocyanate functional groups. In certain embodiments, the polyisocyanate is water insoluble.

The polyisocyanate may be an aromatic or aliphatic polyisocyanate. The desired aromatic polyisocyanates each have a phenyl, tolyl, xylyl, naphthyl or diphenyl moiety or a combination thereof as the aromatic component. In certain embodiments, the aromatic polyisocyanate is polymeric methylene diphenyl diisocyanate ("PMDI"), polyisocyanurate of toluene diisocyanate, trimethylolpropane adduct of toluene diisocyanate, or trimethylolpropane adduct of xylylene diisocyanate.

Suitable aliphatic polyisocyanates include the trimer of hexamethylene diisocyanate, the trimer of isophorone diisocyanate or the biuret of hexamethylene diisocyanate. Further examples include those commercially available, such as BAYHYDUR N304 and BAYHYDUR N305, which are aliphatic water dispersible polyisocyanates based on hexamethylene diisocyanate; DESMODUR N3600, DESMODUR N3700, and DESMODUR N3900, which are low viscosity multifunctional aliphatic polyisocyanates based on hexamethylene diisocyanate; and DESMODUR 3600 and DESMODUR N100, which are aliphatic polyisocyanates based on hexamethylene diisocyanate, all available from Bayer Corporation (Pittsburgh, Pa.).

Specific examples of wall monomer polyisocyanates include 1, 5-naphthylene diisocyanate, 4 ' -diphenylmethane diisocyanate (MDI), hydrogenated MDI (H12MDI), Xylylene Diisocyanate (XDI), tetramethylxylene diisocyanate (TMXDI), 4 ' -diphenyldimethylmethane diisocyanate, dialkyldiphenylmethane diisocyanates and tetraalkyldiphenylmethane diisocyanates, 4 ' -dibenzyl diisocyanate, 1, 3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, isomers (optionally as a mixture) of Tolylene Diisocyanate (TDI), 1-methyl-2, 4-diisocyanatocyclohexane, 1, 6-diisocyanato-2, 2, 4-trimethylhexane, Toluene Diisocyanate (TDI), and mixtures thereof, 1, 6-diisocyanato-2, 4, 4-trimethylhexane, 1-isocyanatomethyl-3-isocyanato-1, 5, 5-trimethylcyclohexane, chlorinated and brominated diisocyanates, phosphorus-containing diisocyanates, 4, 4' -diisocyanatophenylperfluoroethane, tetramethoxybutane 1, 4-diisocyanate, butane 1, 4-diisocyanate, hexane 1, 6-diisocyanate (HDI), dicyclohexylmethane diisocyanate, cyclohexane 1, 4-diisocyanate, ethylene diisocyanate, diisocyanatoethyl phthalate, and polyisocyanates having reactive halogen atoms, such as 1-chloromethylphenyl 2, 4-diisocyanate, 1-bromomethylphenyl 2, 6-diisocyanate and 3, 3-bischloromethyl ether 4, 4' -diphenyl diisocyanate.

Other suitable commercially available polyisocyanates include LUPRANATE M20(PMDI, commercially available from BASF, containing 31.5% by weight of isocyanate groups "NCO"), wherein the average n is 0.7; PAPI 27(PMDI, commercially available from Dow Chemical, average molecular weight 340 and containing 31.4 wt% NCO) where the average n is 0.7; MONDUR MR (PMDI, containing 31 wt% or more NCO, commercially available from Bayer), wherein the average n is 0.8; MONDUR MR Light (PMDI, containing 31.8 wt% NCO, commercially available from Bayer), wherein the average n is 0.8; MONDUR 489(PMDI, commercially available from Bayer, containing 30 wt.% to 31.4 wt.% NCO) with an average n of 1.0; poly [ (phenylisocyanate) -co-formaldehyde ] (Aldrich Chemical, Milwaukee, Wis.), other isocyanate monomers such as DESMODUR N3200 (poly (hexamethylene diisocyanate), commercially available from Bayer) and TAKENATE D110-N (xylene diisocyanate adduct polymer, commercially available from Mitsui Chemicals (Rye Brook, n.y.), contains 11.5 wt.% NCO), DESMODUR L75 (a toluene diisocyanate-based polyisocyanate, commercially available from Bayer), DESMODUR IL (another toluene diisocyanate-based polyisocyanate, commercially available from Bayer) and DESMODUR (a polyisocyanurate of toluene diisocyanate).

Some suitable polyisocyanates have an average molecular weight ranging from 250Da to 1000Da, preferably from 275Da to 500 Da. Generally, the polyisocyanate concentration ranges from 0.1% to 10%, preferably from 0.1% to 8%, more preferably from 0.2% to 5%, even more preferably from 1.5% to 3.5%, all percentages being by weight of the benefit agent capsules.

Crosslinkers suitable for use with the polyisocyanate each contain a plurality (i.e., two or more) of functional groups (e.g., -NH-, -NH2, and-OH) that can react with the polyisocyanate to form a polyurea or polyurethane. Examples include polyfunctional amines (e.g., polyamines) containing two or more amine groups, polyfunctional alcohols (e.g., polyols) containing two or more hydroxyl groups, epoxy crosslinkers, acrylate crosslinkers, and hybrid crosslinkers containing one or more amine groups and one or more hydroxyl groups.

The amine groups in the crosslinker include-NH 2 and R NH, R being substituted and unsubstituted C₁-C₂₀Alkyl radical, C₁-C₂₀Heteroalkyl group, C₁-C₂₀Cycloalkyl, 3-to 8-membered heterocycloalkyl, aryl, and heteroaryl.

Two such classes of polyamines include polyalkylene polyamines having the following structure:

wherein R is hydrogen or-CH₃(ii) a And m, n, x, y, and z are each independently integers from 0 to 2000 (e.g., 1,2, 3, 4, or 5).

Examples include ethylenediamine, 1, 3-diaminopropane, diethylenetriamine, triethylenetetramine, 1, 4-diaminobutane, hexaethylenediamine, hexamethylenediamine, pentaethylenehexamine, melamine, and the like.

Another class of polyamines are the following classes of polyalkylene polyamines:

wherein R is equal to hydrogen or-CH₃M is 1 to 5 and n is 1 to 5, for example, diethylenetriamine, triethylenetetramine and the like. Exemplary amines of this type also include diethylenetriamine, bis (3-aminopropyl) amine, bis (3-aminopropyl) ethylenediamine, bis (hexamethylene) triamine.

Another class of amines useful in the present invention are polyetheramines. They comprise primary amino groups attached to the ends of a polyether backbone. The polyether backbone is typically based on propylene oxide (P0), Ethylene Oxide (EO) or mixed P0/EQ. Based on the core structure, the ether amine can be a monoamine, diamine, or triamine. One example is:

exemplary polyetheramines include 2,2- (ethylenedioxy) -bis (ethylamine) and 4,7, 10-trioxa-1, 13-tridecanediamine.

Other suitable amines include, but are not limited to, tris (2-aminoethyl) amine, triethylenetetramine, N, N ' -bis (3-aminopropyl) -1, 3-propanediamine, tetraethylenepentamine, 1, 2-diaminopropane, 1, 2-diaminoethane, N, N, N ', N ' -tetrakis (2-hydroxyethyl) ethylenediamine, N, N, N ', N ' -tetrakis (2-hydroxypropyl) ethylenediamine, N, N, N ', N ' -tetrakis (3-aminopropyl) -1, 4-butanediamine, 3, 5-diamino-1, 2, 4-triazole, branched polyethyleneimines, 2, 4-diamino-6-hydroxypyrimidines, and 2,4, 6-triaminopyrimidines.

Branched polyethyleneimines useful as crosslinking agents typically have a molecular weight of 200Da to 2,000,000Da (e.g., 800Da to 2,000,000Da, 2,000Da to 1,000,000Da, 10,000Da to 200,000Da, and 20,000Da to 100,000 Da).

Amphoteric amines, i.e., amines that can react as an acid as well as a base, are another class of amines useful in the present invention. Examples of amphoteric amines include proteins and amino acids such as gelatin, L-lysine, D-lysine, L-arginine, D-arginine, L-lysine monohydrochloride, D-lysine monohydrochloride, L-arginine monohydrochloride, D-arginine monohydrochloride, L-ornithine monohydrochloride, D-ornithine monohydrochloride, or mixtures thereof.

Guanamines and guanidine salts are another class of polyfunctional amines useful in the present invention. Exemplary guanamines and guanidine salts include, but are not limited to, 1, 3-diaminoguanidine monohydrochloride, 1-dimethylbiguanide hydrochloride, guanidine carbonate, and guanidine hydrochloride.

Commercially available examples of amines include JEFFAMINE EDR-148 (where n is 2), JEFFAMINE EDR-176 (where n is 3) (available from Huntsman) having the structure shown above. Other polyetheramines include the JEFFAMINE ED series, JEFFAMINE TRIAMINES, polyethyleneimines available from BASF (Ludwigshafen, Germany) on the LUPASOL scale (e.g., LUPASOL FG, LUPASOL G20 anhydrous, LUPASOL PR 8515, LUPASOL WF, LUPASOL FC, LUPASOL G20, LUPASOL G35, LUPASOL G100, LUPASOL G500, LUPASOL HF, LUPASOL PS, LUPASOL HEO 1, LUPASOL PNSO, LUPASOL PN6O, LUPASOL P0100, and LUPASOL SK). Other commercially available polyethyleneimines include EPOMIN P-1000, EPOMIN P-1050, EPOMIN RP18W, and EPOMIN PP-061, available from NIPPON SHOKUBA (N.Y). Polyvinylamines, such as those sold by BASF on the LUPAMINE scale, may also be used. A wide range of polyetheramines can be selected by those skilled in the art. In certain embodiments, the crosslinking agent is hexaethylenediamine, polyetheramine, or mixtures thereof.

The range of polyfunctional amines, polyfunctional alcohols, or mixed crosslinkers can vary from 0.1% to 5% (e.g., from 0.2% to 3%, 0.2% to 2%, 0.5% to 2%, or 0.5% to 1%) by weight of the benefit agent capsules.

The capsules may comprise an emulsifier, wherein the emulsifier is preferably selected from anionic emulsifiers, nonionic emulsifiers, cationic emulsifiers or mixtures thereof, preferably nonionic emulsifiers.

The shell material of the capsule is derived from polyvinyl alcohol, preferably in an amount of from 0.01% to 20%, more preferably from 0.05% to 10%, even more preferably from 0.1% to 5%, most preferably from 0.1% to 2% by weight of the capsule. The polyvinyl alcohol may reside partially within the shell of the capsule and may reside partially on the outer surface of the shell.

Preferably, the polyvinyl alcohol has at least one of the following properties, or a mixture thereof:

(i) 70% to 99%, preferably 75% to 98%, more preferably 80% to 96%, more preferably 82%

A degree of hydrolysis of to 96%, most preferably 86% to 94%;

(ii) a viscosity of from 2 to 150, preferably from 3 to 70, more preferably from 4 to 60, even more preferably from 5 to 55mPa.s in a 4% aqueous solution at 20 ℃.

In preferred fabric treatment compositions, the weight ratio of polyvinyl alcohol to biphenyl brightener is from 1/1 to 1/5000, preferably from 1/2 to 1/2000, more preferably from 1/5 to 1/1000, most preferably from 1/10 to 1/500.

Suitable polyvinyl alcohol materials may be selected from Selvol 540PVA (Sekisui Specialty Chemicals, Dallas, TX), Mowiol 18-88 ═ Poval 18-88, Mowiol 3-83, Mowiol 4-98 ═ Poval 4-98(Kuraray), Poval KL-506 ═ Poval 6-77KL (Kuraray), Poval R-1130 ═ Poval 25-98R (Kuraray), Gohsenx K-434(Nippon Gohsei).

Perfume compositions are preferred encapsulated benefit agents that improve the odor of fabrics treated with fabric treatment compositions. The perfume composition comprises a perfume raw material. The encapsulated benefit agent may further comprise essential oils, malodor reducing agents, odor control agents, silicones, and combinations thereof.

Perfume raw materials are typically present in an amount of from 10% to 99%, preferably from 20% to 98%, more preferably from 70% to 96% by weight of the capsule.

The perfume composition may comprise from 2.5% to 30%, preferably from 5% to 30%, by weight of the perfume composition, of perfume raw materials characterized by a logP of less than 3.0 and a boiling point of less than 250 ℃.

The perfume composition may comprise from 5% to 30%, preferably from 7% to 25%, by weight of the perfume composition, of perfume raw materials characterized by a logP of less than 3.0 and a boiling point of greater than 250 ℃. The perfume composition may comprise from 35% to 60%, preferably from 40% to 55%, by weight of the perfume composition, of perfume raw materials characterized by a logP above 3.0 and a boiling point below 250 ℃. The perfume composition may comprise from 10% to 45%, preferably from 12% to 40%, by weight of the perfume composition, of perfume raw materials characterized by a logP above 3.0 and a boiling point above 250 ℃.

Preferably, the core further comprises a partitioning modifier. Suitable partitioning modifiers include vegetable oils, modified vegetable oils, propan-2-yl tetradecanoate, and mixtures thereof. The modified vegetable oil may be esterified and/or brominated. The vegetable oil comprises castor oil and/or soybean oil. The partitioning modifier may be propan-2-yl tetradecanoate. The partitioning modifier may be present in the core at a level of greater than 10%, or greater than 10% to about 80%, or greater than 20% to about 70%, or greater than 20% to about 60%, or about 30% to about 50%, based on the total weight of the core.

Preferably, the capsules have a volume weighted average particle size of from 0.5 microns to 100 microns, preferably from 1 micron to 60 microns, even more preferably from 5 microns to 45 microns.

For example, polyacrylate benefit agent capsules are available from Encapsys (825East Wisconsin Ave, Appleton, WI 54911) and can be made with, for example, perfume as a benefit agent as follows: a first oil phase consisting of 37.5g of perfume, 0.2g of t-butylaminoethyl methacrylate and 0.2g of beta-hydroxyethyl acrylate was mixed for about 1 hour, then 18g of CN975(Sartomer, Exter, Pa.) was added. The solutions are mixed until needed later in the process.

A second oil phase consisting of 65g of perfume oil, 84g of isopropyl myristate, 1g of 2,2 '-azobis (2-methylbutyronitrile) and 0.8g of 4, 4' -azobis [ 4-cyanovaleric acid ] was added to a jacketed steel reactor. The reactor was maintained at 35 ℃ and the oil solution was mixed with a 2 "flat blade mixer at 500 rpm. A nitrogen blanket was applied to the reactor at a flow rate of 300 cc/min. The solution was heated to 70 ℃ over 45 minutes and held at 70 ℃ for 45 minutes, after which it was cooled to 50 ℃ over 75 minutes. At 50 ℃, the first oil phase was added and the combined oils were mixed for an additional 10 minutes at 50 ℃.

An aqueous phase containing 85g of Selvol 540PVA (Sekisui Specialty Chemicals, Dallas, TX) as 5% solids, 268g of water, 1.2g of 4,4 '-azobis [ 4-cyanovaleric acid ] and 1.1g of 21.5% NaOH was prepared and mixed until the 4, 4' -azobis [ 4-cyanovaleric acid ] was dissolved.

Once the oil phase temperature was reduced to 50 ℃, mixing was stopped and the water phase was added to the mixed oil. High shear agitation was applied to produce an emulsion with the desired dimensional characteristics (1900rpm for 60 minutes).

The temperature was raised to 75 ℃ over 30 minutes, held at 75 ℃ for 4 hours, raised to 95 ℃ over 30 minutes, and held at 95 ℃ for 6 hours.

Surface active agent

In preferred fabric treatment compositions, the composition further comprises a surfactant in an amount of from 1 wt% to 70 wt%, preferably from 10 wt% to 40 wt%, more preferably from 15 wt% to 30 wt%.

The surfactant typically comprises an anionic surfactant. In preferred fabric treatment compositions, the surfactant may comprise anionic surfactant in an amount of from 1 wt% to 50 wt%, preferably from 10 wt% to 40 wt%, more preferably from 15 wt% to 30 wt%.

Suitable anionic surfactants may be selected from the group consisting of: alkyl sulfates, alkyl ethoxy sulfates, alkyl sulfonates, alkyl benzene sulfonates, fatty acids and salts thereof, and mixtures thereof. However, by its very nature, every anionic Surfactant known in the art of detergent compositions can be used, as disclosed in "Surfactant Science Series", 7 th edition, edited by w.m. linfield (Marcel Dekker). However, the base mixture preferably comprises at least a sulphonic acid surfactant, such as linear alkyl benzene sulphonic acid, although water soluble salt forms may also be used.

Anionic sulfonates or sulfonic acid surfactants suitable for use herein include the acid and salt forms of straight or branched C5-C20, more preferably C10-C16, more preferably C11-C13 alkylbenzene sulfonates, C5-C20 alkyl ester sulfonates, C6-C22 primary or secondary alkane sulfonates, C5-C20 sulfonated polycarboxylic acids, and any mixtures thereof, but preferably C11-C13 alkylbenzene sulfonates. The above surfactants can vary widely within their 2-phenyl isomer content.

Anionic sulfates suitable for use in the compositions of the present invention include primary and secondary alkyl sulfates having straight or branched alkyl or alkenyl moieties containing from 9 to 22 carbon atoms or more preferably from 12 to 18 carbon atoms. Also useful are beta-branched alkyl sulfate surfactants or mixtures of commercially available materials having a weight average degree of branching (of the surfactant or mixture) of at least 50%.

Mid-chain branched alkyl sulfates or sulfonates are also suitable anionic surfactants for use in the compositions of the present invention. Mid-chain branched alkyl primary sulfates of C5 to C22, preferably C10 to C20, are preferred. When mixtures are used, suitable average total carbon atoms for the alkyl portion are preferably in the range of greater than 14.5 to 17.5. Preferred monomethyl-branched primary alkyl sulfates are selected from the group consisting of: 3-methyl to 13-methyl pentadecanol sulfate, the corresponding hexadecanol sulfate and mixtures thereof. Dimethyl derivatives or other biodegradable alkyl sulfates with slight branching can be similarly used.

Other suitable anionic surfactants for use herein include fatty acid methyl ester sulfonates and/or alkyl alkoxylated sulfates such as Alkyl Ethoxy Sulfates (AES) and/or alkyl polyalkoxylated carboxylates (AEC).

Anionic surfactants are generally present in the form of their salts with alkanolamines or alkali metals such as sodium and potassium.

To improve stability, the fabric treatment composition may comprise linear alkylbenzene sulphonate surfactant and alkyl alkoxylated sulphate surfactant such that the ratio of linear alkylbenzene sulphonate surfactant is from 0.1 to 5, preferably from 0.25 to 3, more preferably from 0.75 to 1.5. When used, the alkyl alkoxylated sulfate surfactant is preferably a blend of one or more alkyl ethoxylated sulfates, more preferably having a degree of ethoxylation of from 1 to 10, most preferably from 1.8 to 4.

The fabric treatment composition may comprise a nonionic surfactant. The nonionic surfactant may be present in the fabric treatment composition at a level of less than 10 wt%, preferably less than 5 wt%, more preferably less than 1 wt%, most preferably less than 0.5 wt%.

Suitable nonionic surfactants include, but are not limited to, C12-C18 alkyl ethoxylates ("AEs") (including so-called narrow peak alkyl ethoxylates) and C6-C12 alkyl phenol alkoxylates (especially ethoxylates and mixed ethoxy/propoxy), block alkylene oxide condensates of C6-C12 alkyl phenols, alkylene oxide condensates of C8-C22 alkanols, and ethylene oxide/propylene oxide block polymers (Pluronic-BASF Corp.) as well as semi-polar nonionics (e.g., amine oxides and phosphine oxides) may be used in the compositions of the present invention. A broad disclosure of these types of surfactants can be found in U.S. Pat. No. 3,929,678 to Laughlin et al, published 1975, 12, 30.

Alkyl polysaccharides, such as those disclosed in U.S. Pat. No. 4,565,647 to Llenado, are also nonionic surfactants that may be used in the compositions of the present invention.

Also suitable are alkyl polyglucoside surfactants.

In some embodiments, the nonionic surfactant used comprises a nonionic surfactant of the formula R₁(OC₂H₄)_nOH, wherein R is₁Is C10-C16 alkyl or C8-C12 alkylphenyl, and n is preferably 3 to 80. In some embodiments, the nonionic surfactant can be a condensation product of a C12-C15 alcohol with 5 to 20 moles of ethylene oxide per mole of alcohol, for example a C12-C13 alcohol condensed with 6.5 moles of ethylene oxide per mole of alcohol.

Other suitable nonionic surfactants include polyhydroxy fatty acid amides represented by the formula:

wherein R is a C9-17 alkyl or alkenyl group, R1 is a methyl group, and Z is a glycidyl group derived from a reducing sugar or alkoxylated derivative thereof. Examples are N-methyl N-1-deoxyglucuroncocoamide and N-methyl N-1-deoxyglucuronoleamide. Methods for preparing polyhydroxy fatty acid amides are known and can be found in Wilson, U.S. Pat. No. 2,965,576 and Schwartz, U.S. Pat. No. 2,703,798.

The fabric treatment composition may comprise a zwitterion. It has been found that even low levels of zwitterion can improve the stability of fabric treatment compositions, especially compositions comprising little or no organic non-aminofunctional solvent. The zwitterion may be present in an amount of from 0.1 to 5 wt.%, preferably from 0.2 to 2 wt.%, more preferably from 0.4 to 1 wt.%.

Zwitterionic detersive surfactants include those known for use in hair care or other personal care cleansing. Non-limiting examples of suitable zwitterions are described in U.S. Pat. Nos. 5,104,646(Bolich Jr. et al), 5,106,609(Bolich Jr. et al). Zwitterionic detersive surfactants are known in the art and include those surfactants broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be straight chain or branched, and wherein one of the aliphatic substituents contains from 8 to 18 carbon atoms and one contains an anionic group such as carboxy, sulfonate, sulfate, phosphate, or phosphonate. Betaine is also a suitable zwitterionic surfactant.

The fabric treatment composition may comprise a zwitterionic polyamine. Suitable zwitterionic polymers may comprise a polyamine backbone, wherein the backbone units linking the amino units may be modified by the formulator to achieve varying degrees of product enhancement, especially greater effectiveness in heavy soil load use, by surfactants to promote clay soil removal. In addition to the modification of the backbone composition, the formulator may preferably replace one or more of the backbone amino unit hydrogens with other units, especially alkyleneoxy units having a terminal anionic moiety. In addition, nitrogen in the backbone may be oxidized to N-oxide. Preferably, at least two of the nitrogens of the polyamine backbone are quaternized.

Solvent(s)

The fabric treatment composition may comprise an organic non-aminofunctional solvent. The organic non-amino functional solvent, if present, is preferably present at a level of less than 40%, more preferably less than 15%, more preferably from 1% to 10%, more preferably from 1.2% to 7.5%, most preferably from 1.2% to 5.0% by weight of the organic non-amino functional solvent. As used herein, "organic solvent free of amino functional groups" refers to any solvent that does not contain an amino functional group, and does not actually contain nitrogen. Non-amino functional solvents include, for example: C1-C5 alkanols, such as methanol, ethanol and/or propanol and/or 1-ethoxypentanol; a C2-C6 diol; C3-C8 alkylene glycol; C3-C8 alkylene glycol mono lower alkyl ether; a glycol dialkyl ether; low molecular weight polyethylene glycols; C3-C9 triols such as glycerol; and mixtures thereof. More specifically, the non-aminofunctional solvent is liquid at ambient temperature and pressure (i.e., 21 ℃ and 1 atmosphere) and contains carbon, hydrogen, and oxygen.

Highly preferred, if used, are mixtures of organic non-aminofunctional solvents, especially mixtures of lower aliphatic alcohols such as propanol, butanol, isopropanol and/or glycols such as 1, 2-propanediol or 1, 3-propanediol; glycerol; diethylene glycol; or mixtures thereof. Propylene glycol (especially 1, 2-propylene glycol), or a mixture of propylene glycol and diethylene glycol is preferred.

Hydrotropic agent

Suitable fabric treatment compositions may comprise a hydrotrope. The hydrotrope, if present, is preferably present at a level of less than 1%, more preferably from 0.1% to 0.5% by weight of the liquid composition. Suitable hydrotropes include anionic hydrotropes, especially sodium, potassium and ammonium xylene sulfonate, sodium, potassium and ammonium toluene sulfonate, sodium, potassium and ammonium cumene sulfonate and mixtures thereof, as disclosed in U.S. Pat. No. 3,915,903. For the avoidance of doubt, hydrotropes that are also zwitterionic are also considered to be zwitterionic for use in the compositions of the present invention.

Salt (salt)

The fabric treatment composition may comprise a non-surfactant salt selected from the group consisting of: sodium carbonate, sodium bicarbonate (sodium hydrogen carbonate/sodium bicarbonate), magnesium chloride, ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethanediphosphonic acid (HEDP), sodium citrate, sodium chloride, citric acid, calcium chloride, sodium formate, diethylenetriaminepentamethylenephosphonic acid, and mixtures thereof. Such non-surfactant salts may be used to increase the amount of liquid crystal phase, especially lamellar phase, present. The non-surfactant salt may be added to provide a non-surfactant salt content in the fabric treatment composition of from 1.5 wt% to 10 wt%, more preferably from 2.5 wt% to 7 wt%, most preferably from 3 wt% to 5 wt%.

The fabric treatment composition preferably comprises from 15% to 85%, preferably from 5% to 70%, more preferably from 10% to 60% of a liquid crystalline phase.

The fabric treatment composition preferably comprises water. The water content is present at a level of from 10% to 90%, preferably from 25% to 80%, more preferably from 45% to 70% by weight of the fabric treatment composition.

Adjuvant materials

The fabric treatment composition may comprise additional ingredients, such as those selected from the group consisting of: polymeric deposition aids, organic builders and/or chelating agents, enzymes, enzyme stabilizers, shading dyes, particulate matter, cleaning polymers, external structurants and mixtures thereof.

Polymeric deposition aid: the base mix may comprise from 0.1% to 7%, more preferably from 0.2% to 3% of a polymeric deposition aid. As used herein, "polymeric deposition aid" refers to any cationic polymer or combination of cationic polymers that significantly enhances the deposition of fabric care benefit agents onto fabrics during laundering. Suitable polymeric deposition aids may comprise cationic polysaccharides and/or copolymers. As used herein, "benefit agent" refers to any material that can provide fabric care benefits. Non-limiting examples of fabric care benefit agents include: silicone derivatives, oily sugar derivatives, dispersed polyolefins, polymer latexes, cationic surfactants, and combinations thereof. Preferably, the deposition aid is a cationic polymer or an amphoteric polymer. The cationic charge density of the polymer is preferably in the range of 0.05 to 6 meq/g. The charge density is calculated by dividing the number of net charges per repeat unit by the molecular weight of the repeat unit. In one embodiment, the charge density varies from 0.1 meq/g to 3 meq/g. The positive charge may be located on the backbone of the polymer or on a side chain of the polymer.

Organic builders and/or chelating agents: the base mixture may comprise from 0.6% to 10%, preferably from 2% to 7% by weight of one or more organic builders and/or chelating agents. Suitable organic builders and/or chelating agents are selected from the group consisting of: MEA citrate, citric acid, aminoalkylene poly (alkylene phosphonates), alkali metal ethane 1-hydroxy bisphosphonates, and nitrilotrimethylene phosphonates, diethylenetriamine penta (methylene phosphonic acid) (DTPMP), ethylenediamine tetra (methylene phosphonic acid) (DDTMP), hexamethylenediamine tetra (methylene phosphonic acid), hydroxy-ethylene-1, 1-diphosphonic acid (HEDP), hydroxyethane dimethylene phosphonic acid, ethylenediamine disuccinic acid (EDDS), ethylenediamine tetraacetic acid (EDTA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), nitrilotriacetic acid (NTA), Methyl Glycine Diacetate (MGDA), iminodisuccinic acid (IDS), hydroxyethyliminodisuccinic acid (HIDS), hydroxyethyliminodiacetic acid (HEIDA), glycine diacetate (GLDA), diethylenetriamine pentaacetic acid (DTPA), Catecholsulfonates such as tiron (tm) and mixtures thereof.

Toning dye: hueing dyes, shading dyes or fabric hueing or hueing agents are laundry aids which may be used in the fluid laundry detergent composition. The long history of these materials in laundry washing has originated from the use of "laundry bluing agents" years ago. Recent developments have included the use of sulfonated phthalocyanine dyes having a zinc or aluminum central atom; and, more recently, a wide variety of other blue and/or violet dyes have been used for their hueing or coloring effect. See, e.g., WO 2009/087524a1, WO2009/087034a1, and references therein. The fluid laundry detergent compositions herein typically comprise from 0.00003 wt% to 0.1 wt%, from 0.00008 wt% to 0.05 wt% or even from 0.0001 wt% to 0.04 wt% of fabric hueing agent.

Particulate matter: suitable particulate materials are clays, suds suppressors, microcapsules (e.g. with encapsulated ingredients such as perfume), bleaching agents and enzymes in encapsulated form; or aesthetic aids such as pearlizing agents, pigment particles, mica, and the like. Particularly preferred particulate materials are microcapsules, especially perfume microcapsules. Microcapsules are typically formed by at least partially, preferably completely, surrounding the benefit agent with a wall material. Preferably, the microcapsules are perfume microcapsules, wherein the benefit agent comprises one or more perfume raw materials. Suitable amounts are from 0.0001% to 5% or from 0.1% to 1% by weight of the fabric treatment composition.

Spice: suitable perfumes are known in the art and are typically incorporated at levels of from 0.001% to 10%, preferably from 0.01% to 5%, more preferably from 0.1% to 3% by weight.

Cleaning polymer: suitable cleaning polymers provide a wide range of surface and fabric soil cleaning and/or soil suspension. Any suitable cleaning polymer may be used. Useful cleaning polymers are described in USPN 2009/0124528a 1. Non-limiting examples of useful classes of cleaning polymers include: an amphiphilic alkoxylated grease cleaning polymer; clay soil cleaning polymers; a soil release polymer; and soil-suspending polymers.

External structurant: preferred external structurants are uncharged external structurants such as those selected from the group consisting of: non-polymeric crystalline hydroxy-functional structurants such as hydrogenated castor oil; microfibrillated cellulose; uncharged hydroxyethyl cellulose; uncharged hydrophobically modified hydroxyethyl cellulose; hydrophobically modified ethoxylated urethanes; a hydrophobically modified nonionic polyol; and mixtures thereof.

Use of fabric treatment compositions comprising biphenyl brighteners

Applicants have surprisingly found that the biphenyl whitening agent in the fabric treatment composition according to the present invention provides improved deposition to the benefit agent capsules. Without being bound by theory, applicants believe that improved deposition (especially affinity for cotton fabrics) is caused by the interaction between the biphenyl brightener and the polyvinyl alcohol in the benefit agent capsules.

Method of producing a composite material

Method for treating fabric

The fabrics were treated using a Miele W1714 Softtronic washing machine. For each treatment, the washing machine was loaded with 3kg of fabric comprising 1500g of knitted cotton fabric, 1100g of polyester cotton fabric (50/50). 6 terry cloth towel tracer (supplied by Maes Textiles) were also added, weighing 260g together for headspace analysis. This load was pretreated twice with 79g of IEC a base detergent, unscented and supplied by WFK Testgewebe GmbH, using a short cotton cycle at 95 ℃, followed by two additional 95 ℃ washes without detergent. For the test treatment, the load was washed with 60g of fabric treatment composition using a short synthesis cycle at 30 ℃ added using a dosing ball at the beginning of the wash cycle. After washing, the terry towel tracer was hung up and analyzed as follows to determine headspace concentration above the treated fabric.

Method for determining headspace concentration above a treated fabric

At the end of the wash cycle, the terry towel tracer was removed from the washing machine and hung to dry overnight. The next day, the dry terry towel tracer was analyzed by the fast headspace GC/MS (gas chromatography mass spectrometry) method. An aliquot of 4X4cm of the terry towel tracer was transferred to a 25mL headspace vial. The fabric samples were equilibrated at 75 ℃ for 10 minutes. The headspace above the fabric was sampled for 5 minutes via the SPME (50/30 μm DVB/Carboxen/PDMS) method. The SPME fiber was then immediately thermally desorbed into the GC. Analytes were analyzed by fast GC/MS in full scan mode. Ion extractions of specific masses of PRMs were used to calculate the total HS response and perfume headspace composition above the test group. The results are reported as headspace index, where the dry headspace of the test treatment is expressed as a ratio relative to the reference treatment with index 1.

Method for measuring viscosity of polyvinyl alcohol solution

The viscosity was measured using a Brookfield LV series viscometer or equivalent and was measured at 4.00% +/-0.05% solids.

a. Preparation of a 4.00% +/-0.05% solid solution of polyvinyl alcohol。

Weigh 500mL beaker and stirrer. The weight was recorded. A16.00 +/-0.01 gram sample of polyvinyl alcohol was added to the beaker. Approximately 350mL to 375mL of deionized water was added to the beaker and the solution was stirred. The beaker was placed in a hot water bath with a lid. Stirring at moderate speed for 45 minutes to 1 hour, or until the polyvinyl alcohol is completely dissolved. The agitator was turned off. The beaker was cooled to about 20 ℃.

The final weight of the beaker was calculated as follows:

final weight ═ weight of empty beaker and stirrer) + (solid% in decimal x 400)

Example (b): weight of the empty beaker and stirrer was 125.0 g

Polyvinyl alcohol (sample) 97.50% solids or 0.9750 (as decimal)

Final weight 125.0+ (0.9750 × 400) 515.0 g

The top load balance was zeroed and a beaker of polyvinyl alcohol solution and a propeller were placed on top of it. Deionized water was added to bring the weight to the calculated final weight of 515.0 grams.

The solids content of the sample must be 4.00+ 0.05% to measure viscosity.

b. Measurement of viscosity

Samples of 4% polyvinyl alcohol solution were dispensed into the chamber of the viscometer, the spindle was inserted and attached to the viscometer. Sample Adapter (SSA) with chamber SC4-13RPY, Ultralow adapter. Mandrels SC4-18 and 00. The sample was allowed to equilibrate at a temperature of 20 ℃. The viscometer was started and the steady state viscosity value was recorded.

The viscosity was reported as <13cP to 0.01cP, 13cP to 100cP to 0.1 cP; viscosities in excess of 100cP are reported to the nearest 1 cP.

If the calculated solution solids content is 4.00+ -0.05%, no correction for the measured viscosity is necessary. Otherwise, the following formula is used to correct the measured viscosity of the solution solids deviation.

Corrected viscosity 2.718282 (logarithm of corrected viscosity)

Examples

Polyacrylate benefit agent capsules containing perfume were made as follows: a first oil phase consisting of 37.5g of perfume, 0.2g of t-butylaminoethyl methacrylate and 0.2g of beta-hydroxyethyl acrylate was mixed for about 1 hour, then 18g of CN975(Sartomer, Exter, Pa.) was added. The solutions are mixed until needed later in the process.

A second oil phase consisting of 65g of perfume oil, 84g of isopropyl myristate, 1g of 2,2 '-azobis (2-methylbutyronitrile) and 0.8g of 4, 4' -azobis [ 4-cyanovaleric acid ] was added to a jacketed steel reactor. The reactor was maintained at 35 ℃ and the oil solution was mixed with a 2 "flat blade mixer at 500 rpm. A nitrogen blanket was applied to the reactor at a flow rate of 300 cc/min. The solution was heated to 70 ℃ over 45 minutes and held at 70 ℃ for 45 minutes, after which it was cooled to 50 ℃ over 75 minutes. At 50 ℃, the first oil phase was added and the combined oils were mixed for an additional 10 minutes at 50 ℃.

An aqueous phase containing 85g of Selvol 540 polyvinyl alcohol (Sekisui Specialty Chemicals, Dallas, TX) as 5% solids, 268g of water, 1.2g of 4,4 '-azobis [ 4-cyanovaleric acid ], and 1.1g of 21.5% NaOH was prepared and mixed until the 4, 4' -azobis [ 4-cyanovaleric acid ] was dissolved.

Once the oil phase temperature was reduced to 50 ℃, mixing was stopped and the water phase was added to the mixed oil. High shear agitation was applied to produce an emulsion with the desired dimensional characteristics (1900rpm for 60 minutes).

The temperature was raised to 75 ℃ over 30 minutes, held at 75 ℃ for 4 hours, raised to 95 ℃ over 30 minutes, and held at 95 ℃ for 6 hours.

Fabric treatment composition examples 1 to 4 were prepared as follows. Water, sodium hydroxide and solvent were mixed together in a plastic beaker with a blade mixer. To this mixture, the surfactant, chelant, builder, and polymer are added while mixing. The final pH was adjusted to a pH of about 8 (10 wt% dilution) with sodium hydroxide.

The mixture was then cooled to ambient temperature and during further mixing, dyes, enzymes, polymers, preservatives, processing aids and structurants were added. In examples 2 to 4, also starting from the brightener premix, the biphenyl brightener was added. The brightener 49 premix was supplied by Calvary Industries and the brightener 49 had 8.4% active in 1.2 propylene glycol aqueous solution and ethoxylated alcohol solution.

The whitening agent 49 corresponds to the formula

Wherein M corresponds to Na⁺。

The premix is formulated to allow for uniform distribution of the whitening agent throughout the composition. The detailed compositions of the fabric treatment compositions (examples 1 to 4) are provided in table 1.

Table 1: compositional details of examples 1 to 4. Example 1 is a comparative example and is indicated by an asterisk。

As is clear from table 1, the headspace above the fabrics treated with the compositions according to the invention (examples 2 to 4) is higher than that of comparative example 1, which does not contain the biphenyl brightener. Since the headspace measurement records the concentration of the perfume raw material initially encapsulated in the benefit agent capsules, an increase in headspace concentration can be correlated with an increase in benefit agent capsule deposition. Furthermore, it can be observed that higher content of biphenyl whitening agent (examples 3 to 4) shows further improvement of headspace and thus deposition, relative to lower content of biphenyl whitening agent (example 2).

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