Fabric care compositions

Abstract

The present invention provides a fabric care composition comprising water; a cleansing surfactant; a fabric softening silicone; and a deposition aid polymer, wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances deposition of the fabric softening silicone from the fabric care composition onto fabric.

Description

[0001] The present invention relates to fabric care compositions. In particular, the present invention relates to a fabric care composition comprising: water; a cleansing surfactant; a fabric softening silicone; and a deposition aid polymer, wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances deposition of the fabric softening silicone from the fabric care composition onto fabric.

[0002] Cationic carbohydrate polymers are known for use in laundry detergents, such as in, for example, US Patent No. 6,833, 347. However, this reference does not teach the use of the modified polymers described herein.

[0003] Eldredge et al. have disclosed modified carbohydrate polymers with quaternary ammonium groups for fabric care in U.S. Patent Application Publication No. 20170335242. Eldredge et al. disclose a fabric care composition comprising a modified carbohydrate polymer with quaternary ammonium groups having at least one C 8-22 wherein the modified carbohydrate polymer has a weight average molecular weight of at least 500,000; and wherein at least 20% by weight of the quaternary ammonium groups on at least one modified carbohydrate polymer have at least one C 8-22 Alkyl or alkenyl.

[0004] Despite this, there remains a continuing need for fabric care compositions having a desirable balance of performance attributes, particularly softening and anti-redeposition.

[0005] The present invention provides a fabric care composition comprising: water; a cleansing surfactant; a fabric softening silicone; and a deposition aid polymer, wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances deposition of the fabric softening silicone from the fabric care composition onto fabric.

[0006] The present invention provides a method of treating a clothing article, the method comprising: providing a clothing article; selecting a fabric care composition according to the present invention; providing bath water; and applying the bath water and the fabric care composition to the clothing article to provide a treated clothing article; wherein the fabric softening silicone is associated with the treated clothing article. DETAILED DESCRIPTION

[0007] It has been discovered that the combination of a fabric care composition comprising a fabric softening silicone and a deposition aid polymer comprising a dextran polymer functionalized with quaternary ammonium moieties provides a surprisingly advantageous balance of softening and anti-redeposition.

[0008] Unless otherwise indicated, ratios, percentages, parts, etc. are by weight. Weight percentages (or wt %) in a composition are percentages on a dry weight basis, ie, excluding any water that may be present in the composition.

[0009] As used herein, unless otherwise indicated, the terms "weight average molecular weight" and "Mw" are used interchangeably and refer to the weight average molecular weight measured in a conventional manner using gel permeation chromatography (GPC) and conventional standards such as polyethylene glycol standards. The GPC technique is discussed in detail in "Modem Size Exclusion Chromatography", W. W. Yau, J. J. Kirkland, D. D. Ly; Wiley-Interscience, 1979, and in "A Guide to Materials Characterization and Chemical Analysis", J. P. Sibilia; V. C. H., 1988, pp. 81-84. The weight average molecular weight is reported herein in Daltons.

[0010] Preferably, the fabric care composition of the present invention comprises: water (preferably, from 10 wt% to 94.9 wt% (more preferably, from 25 wt% to 94 wt%; still more preferably, from 40 wt% to 85 wt%; most preferably, from 50 wt% to 75 wt%) of water, based on the weight of the fabric care composition); a cleansing surfactant (preferably, from 5 wt% to 89.9 wt% (more preferably, from 7.5 wt% to 75 wt%; still more preferably, from 10 wt% to 6 % to 30 wt % of a cleansing surfactant); a fabric softening silicone (preferably 0.05 wt % to 10 wt % (more preferably 0.1 wt % to 5 wt %; most preferably 0.1 wt % to 3 wt %) of a fabric softening silicone, based on the weight of the fabric composition) (preferably, wherein the fabric softening silicone is selected from the group consisting of nitrogen-free silicone polymers, anionic silicone polymers, and mixtures thereof); and a deposition aid polymer (based on the weight of the fabric composition). %; more preferably, 0.075 wt % to 3.0 wt %; still more preferably, 0.09 wt % to 2.5 wt %; most preferably, 0.1 wt % to 2.25 wt % of a deposition aid polymer) based on the weight of the bio-care composition, wherein the deposition aid polymer is a dextran polymer (preferably a branched dextran polymer) functionalized with a quaternary ammonium moiety (preferably, wherein the deposition aid polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatiles, of ≥ 0. % to 5.0 wt. % (preferably, 0.5 wt. % to 5.0 wt. %; more preferably, 0.5 wt. % to 4.0 wt. %; still more preferably, 0.75 wt. % to 2.5 wt. %; most preferably, 1 wt. % to 2 wt. %); wherein the deposition aid polymer enhances deposition of the fabric softening silicone from the fabric care composition onto fabric (preferably, wherein the fabric is selected from the group consisting of cotton interlock, cotton, a poly-cotton blend, and cotton terry; more preferably, wherein the fabric contains cotton; most preferably, wherein the fabric is cotton).

[0011] Preferably, the fabric care composition of the present invention is a liquid formulation. More preferably, the fabric care composition of the present invention is an aqueous liquid formulation.

[0012] Preferably, the fabric care composition of the present invention comprises water. More preferably, the fabric care composition of the present invention comprises from 10 wt% to 94.9 wt% (more preferably, from 25 wt% to 94 wt%; still more preferably, from 40 wt% to 85 wt%; most preferably, from 50 wt% to 75 wt%) of water, based on the weight of the fabric care composition. Still more preferably, the fabric care composition of the present invention comprises from 10 wt% to 94.9 wt% (more preferably, from 25 wt% to 94 wt%; still more preferably, from 40 wt% to 85 wt%; most preferably, from 50 wt% to 75 wt%) of water, based on the weight of the fabric care composition, wherein the water is at least one of distilled water and deionized water. Most preferably, the fabric care compositions of the present invention comprise from 10 wt.% to 94.9 wt.% (more preferably, from 25 wt.% to 94 wt.%; still more preferably, from 40 wt.% to 85 wt.%; most preferably, from 50 wt.% to 75 wt.%) water, based on the weight of the fabric care composition, wherein the water is distilled and deionized.

[0013] Preferably, the fabric care composition of the present invention comprises a cleansing surfactant. More preferably, the fabric care composition of the present invention comprises from 5% to 89.9% (preferably, from 7.5% to 75%; more preferably, from 10% to 60%; most preferably, from 15% to 30%) by weight of a cleansing surfactant, based on the weight of the fabric care composition. Still more preferably, the fabric care composition of the present invention comprises from 5% to 89.9% (preferably, from 7.5% to 75%; more preferably, from 10% to 60%; most preferably, from 15% to 30%) by weight of a cleansing surfactant, based on the weight of the fabric care composition; wherein the cleansing surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, and mixtures thereof. Still more preferably, the fabric care composition of the present invention comprises from 5% to 89.9% (preferably, from 7.5% to 75%; more preferably, from 10% to 60%; most preferably, from 15% to 30%) of a cleansing surfactant, based on the weight of the fabric care composition; wherein the cleansing surfactant is selected from the group consisting of a mixture comprising anionic surfactants and nonionic surfactants. Most preferably, the fabric care composition of the present invention comprises from 5% to 89.9% (preferably, from 7.5% to 75%; more preferably, from 10% to 60%; most preferably, from 15% to 30%) of a cleansing surfactant, based on the weight of the fabric care composition; wherein the cleansing surfactant comprises a mixture of linear alkylbenzene sulfonate, sodium lauryl ethoxysulfate and nonionic alcohol ethoxylate.

[0014] Anionic surfactants include alkyl sulfates, alkylbenzene sulfates, alkylbenzene sulfonic acids, alkylbenzene sulfonates, alkyl polyethoxy sulfates, alkoxylated alcohols, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, α-sulfocarboxylates, esters of α-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, fatty acid sulfates, fatty acid sulfonates, sulfonates of fatty acid esters, alkylphenols, alkylphenol polyethoxy ether sulfates, 2-acryloyloxy-alkane-1-sulfonic acids, 2-acryloyloxy-alkane-1-sulfonates, β-alkoxyalkane sulfonic acids, β-alkoxyalkane sulfonates, amine oxides, and mixtures thereof. Preferred anionic surfactants include C 8-20 Alkylbenzene sulfate, C 8-20 Alkylbenzenesulfonic acid, C 8-20 Alkylbenzene sulfonate, paraffin sulfonic acid, paraffin sulfonate, α-olefin sulfonic acid, α-olefin sulfonate, alkoxylated alcohol, C 8-20 Alkylphenols, amine oxides, sulfonates of fatty acids, sulfonates of fatty acid esters and mixtures thereof. More preferred anionic surfactants include C 12-16 Alkylbenzenesulfonic acid, C 12-16 Alkylbenzene sulfonate, C 12-18 Paraffin-sulfonic acid, C 12-18 Paraffin-sulfonates and mixtures thereof.

[0015] Nonionic surfactants include secondary alcohol ethoxylates, ethoxylated 2-ethylhexanol, ethoxylated seed oils, butanol-capped ethoxylated 2-ethylhexanol, and mixtures thereof. Preferred nonionic surfactants include secondary alcohol ethoxylates.

[0016] Cationic surfactants include quaternary surfactant compounds. Preferred cationic surfactants include quaternary surfactant compounds having at least one of an ammonium group, a sulfonium group, a phosphonium group, an iodonium group, and an arsonium group. More preferred cationic surfactants include at least one of dialkyldimethylammonium chloride and alkyldimethylbenzylammonium chloride. Still more preferred cationic surfactants include at least one of the following: C 16-18 Dialkyldimethylammonium chloride, C 8-18 Alkyldimethylbenzyl ammonium chloride, ditallow dimethyl ammonium chloride and ditallow dimethyl ammonium chloride. The most preferred cationic surfactants include ditallow dimethyl ammonium chloride.

[0017] Amphoteric surfactants include betaines, amine oxides, alkylamidoalkylamines, alkyl-substituted amine oxides, acylated amino acids, derivatives of fatty quaternary ammonium compounds, and mixtures thereof. Preferred amphoteric surfactants include derivatives of fatty quaternary ammonium compounds. More preferred amphoteric surfactants include derivatives of fatty quaternary ammonium compounds having long chain groups (having 8 to 18 carbon atoms). Still more preferred amphoteric surfactants include at least one of the following: C 12-14 Alkyl dimethylamine oxide, 3-(N,N-dimethyl-N-hexadecyl-ammonio) propane-1-sulfonate, 3-(N,N-dimethyl-N-hexadecyl-ammonio)-2-hydroxypropane-1-sulfonate. The most preferred amphoteric surfactants include C 12-14 At least one of alkyl dimethyl amine oxides.

[0018] Preferably, the fabric care composition of the present invention comprises a fabric softening silicone. More preferably, the fabric care composition of the present invention comprises from 0.05 wt. % to 10 wt. % (preferably, from 0.1 wt. % to 5 wt. %; more preferably, from 0.1 wt. % to 3 wt. %) of the fabric softening silicone, based on the weight of the fabric care composition. Still more preferably, the fabric care composition of the present invention comprises from 0.05 wt. % to 10 wt. % (preferably, from 0.1 wt. % to 5 wt. %; more preferably, from 0.1 wt. % to 3 wt. %) of the fabric softening silicone, based on the weight of the fabric care composition; wherein the fabric softening silicone is selected from the group consisting of: nitrogen-free silicone polymers, anionic silicone polymers, and mixtures thereof. Most preferably, the fabric care compositions of the present invention comprise from 0.05 wt. % to 10 wt. % (preferably, from 0.1 wt. % to 5 wt. %; more preferably, from 0.1 wt. % to 3 wt. %) of a fabric softening silicone, based on the weight of the fabric care composition; wherein the fabric softening silicone is selected from the group consisting of nitrogen-free silicone polymers, anionic silicone polymers, and mixtures thereof; and wherein the fabric softening silicone is in the form of an emulsion.

[0019] Preferred nitrogen-free siloxane polymers include nonionic nitrogen-free siloxane polymers, zwitterionic nitrogen-free siloxane polymers, amphoteric nitrogen-free siloxane polymers, and mixtures thereof. Preferred nitrogen-free siloxane polymers have formula (1), (2), or (3) (preferably, formula (1) or (3)):

[0020]

[0021]

[0022]

[0023] Each R 1Independently selected from the group consisting of: C 1-20 Alkyl, C 2-20 Alkenyl, C 6-20 Aryl, C 7-20 Arylalkyl, C 7-20 Alkyl aryl, C 7-20 Arylalkenyl and C 7-20 Alkenylaryl (preferably, wherein R 1 is selected from the group consisting of: methyl, phenyl and phenylalkyl); wherein each R 2 Independently selected from the group consisting of: C 1-20 Alkyl, C 2-20 Alkenyl, C 6-20 Aryl, C 7-20 Arylalkyl, C 7-20 Alkyl aryl, C 7-20 Arylalkenyl, C 7-20 an alkenyl aryl group and a poly(ethylene oxide / propylene oxide) copolymer group having formula (4)

[0024] -(CH2) n O(C2H4O) m (C3H6O) p R 3 (4)

[0025] Each R 3 independently selected from the group consisting of: hydrogen, C 1-4 Alkyl and acetyl; at least one R 2 is a poly(ethyleneoxy / propyleneoxy) copolymer group having formula (4); wherein a has a value such that the viscosity of the nitrogen-free siloxane polymer according to formula (1) or formula (3) at 20°C is from 2 centistokes to 50,000,000 centistokes (preferably, from 10,000 centistokes to 800,000 centistokes at 20°C); wherein b is from 1 to 50 (preferably, from 1 to 30); wherein c is from 1 to 50 (preferably, from 1 to 30); wherein n is from 1 to 50 (preferably, from 3 to 5); wherein m is from 1 to 100 (preferably, from 6 to 100); wherein p is from 0 to 14 (preferably, from 0 to 3); wherein m+p is from 5 to 150 (preferably, from 7 to 100) (preferably, wherein R 2 is selected from the group consisting of methyl, phenyl, phenylalkyl and a group having formula (4). The most preferred nitrogen-free siloxane polymer has formula (3) wherein R 1 is methyl, and wherein a has a value such that the viscosity of the nitrogen-free siloxane polymer at 20°C is from 60,000 centistokes to 700,000 centistokes.

[0026] Preferred nitrogen-free siloxane polymers include anionic siloxane polymers. Anionic siloxane polymers are described, for example, in "The Encyclopedia of Polymer Science," Vol. 11, p. 765. Examples of anionic siloxane polymers include siloxanes incorporating carboxylic acid, sulfate, sulfonic acid, phosphate, and / or phosphonate functional groups. Preferred anionic siloxane polymers incorporate carboxyl functional groups (e.g., carboxylic acid or carboxylate anions). Preferred anionic siloxane polymers have a weight average molecular weight of 1,000 to 100,000 daltons (preferably, 2,000 to 50,000 daltons; more preferably, 5,000 to 50,000 daltons; most preferably, 10,000 to 50,000 daltons). Preferably, the anionic siloxane polymer has an anionic group content of at least 1 mol % (more preferably, at least 2 mol %). Preferably, the anionic groups on the anionic siloxane polymer are not located at the terminal position of the longest linear siloxane chain. Preferred anionic siloxane polymers have anionic groups at mid-chain positions of the siloxane. More preferred anionic siloxane polymers have anionic groups located at least five siloxane atoms from the terminal position of the longest linear siloxane chain in the anionic siloxane polymer.

[0027] Preferably, the fabric care composition of the present invention comprises a deposition aid polymer; wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances the deposition of silicone from the fabric care composition onto fabric (preferably, cotton fabric). More preferably, the fabric care composition of the present invention comprises from 0.05 wt% to 5.0 wt% (preferably, from 0.075 wt% to 3.0 wt%; more preferably, from 0.09 wt% to 2.5 wt%; most preferably, from 0.1 wt% to 2.25 wt%) of a deposition aid polymer, based on the weight of the fabric care composition; wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances the deposition of silicone from the fabric care composition onto fabric (preferably, cotton fabric). Most preferably, the fabric care composition of the present invention comprises from 0.05 wt% to 5.0 wt% (preferably, from 0.075 wt% to 3.0 wt%; more preferably, from 0.09 wt% to 2.5 wt%; most preferably, from 0.1 wt% to 2.25 wt%) of a deposition aid polymer, based on the weight of the fabric care composition; wherein the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the deposition aid polymer enhances the deposition of silicone from the fabric care composition onto fabric (preferably, cotton fabric); wherein the deposition aid polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatiles, of ≥ 0.5 wt% (preferably, from 0.5 wt% to 5.0 wt%; more preferably, from 0.5 wt% to 4.0 wt%; still more preferably, from 0.75 wt% to 2.5 wt%; most preferably, from 1 wt% to 2 wt%) (using a Buchi KjelMaster K-375 automatic analyzer, corrected for volatiles and ash measured as described in ASTM method D-2364); wherein the deposition aid polymer enhances the deposition of silicone from the fabric care composition onto fabric (preferably cotton fabric).

[0028] Preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety. More preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the dextran polymer is a branched dextran polymer. Still more preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the dextran polymer comprises a branched dextran polymer; wherein the branched dextran polymer comprises a plurality of glucose structural units; wherein 90 mol% to 98 mol% (preferably 92.5 mol% to 97.5 mol%; more preferably, 93 mol% to 97 mol%; most preferably, 94 mol% to 96 mol%) of the glucose structural units are linked via α-D-1,6 linkages and 2 mol% to 10 mol% (preferably 2.5 mol% to 7.5 mol%; more preferably, 3 mol% to 7 mol%; most preferably, 4 mol% to 6 mol%) of the glucose structural units are linked via α-1,3 linkages. Most preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the dextran polymer is a branched dextran polymer; wherein the branched dextran polymer comprises a plurality of glucose structural units; wherein according to formula (I), 90 mol% to 98 mol% (preferably, 92.5 mol% to 97.5 mol%; more preferably, 93 mol% to 97 mol%; most preferably, 94 mol% to 96 mol%) of the glucose structural units are linked via α-D-1,6 bonds and 2 mol% to 10 mol% (preferably, 2.5 mol% to 7.5 mol%; more preferably, 3 mol% to 7 mol%; most preferably, 4 mol% to 6 mol%) of the glucose structural units are linked via α-1,3 bonds

[0029]

[0030] wherein R is selected from hydrogen, C 1-4 Alkyl and hydroxy C 1-4 alkyl; and wherein the average branching of the glucan polymer backbone is ≤ 3 anhydroglucose units.

[0031] Preferably, the glucan polymer contains less than 0.01 wt% alternan based on the weight of the glucan polymer. More preferably, the glucan polymer contains less than 0.001 wt% alternan based on the weight of the glucan polymer. Most preferably, the glucan polymer contains alternan below the detectable limit.

[0032] Preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety. More preferably, the deposition aid polymer is a dextran polymer functionalized with a quaternary ammonium moiety; wherein the quaternary ammonium moiety has the formula (A) bonded to a pendant oxygen on the dextran polymer

[0033]

[0034] in is a pendant oxygen on the dextran polymer; wherein X is a divalent linking group that bonds the quaternary ammonium moiety to the pendant oxygen on the dextran polymer (preferably, wherein X is selected from a divalent hydrocarbon group, which may be optionally substituted with (e.g., hydroxyl, alkoxy, ether); more preferably, wherein X is -CH2CH(OR 6 )CH2- group; wherein R 6 Selected from the group consisting of: hydrogen and C 1-4 alkyl (preferably hydrogen); most preferably, X is a -CH2CH(OH)CH2- group); wherein each R 4 Independently selected from C 1-7 Alkyl (preferably C 1-3 alkyl; more preferably, methyl and ethyl; most preferably, methyl); and wherein R 5 Selected from C 1-22 Alkyl (preferably, selected from the group consisting of: C 1-3 Alkyl and C 6-22 alkyl; more preferably, methyl and ethyl; most preferably, methyl). Most preferably, the deposition aid polymer is a cationic dextran polymer; wherein the cationic dextran polymer comprises a dextran polymer functionalized with a quaternary ammonium group; wherein the quaternary ammonium group is selected from the group consisting of a quaternary ammonium moiety of formula (B) bonded to a pendant oxygen on the dextran polymer

[0035]

[0036] where R 6 Selected from the group consisting of: hydrogen and C 1-4 alkyl (preferably hydrogen); and wherein each R 7 Independently selected from the group consisting of methyl and ethyl (preferably, methyl).

[0037] Preferably, the deposition aid polymer comprises <0.001 meq / g (preferably, <0.0001 meq / g; more preferably, <0.00001 meq / g; most preferably, < detectable limit) of aldehyde functionality.

[0038] Preferably, the deposition aid polymer comprises <0.1% (preferably, <0.01%; more preferably, <0.001%; most preferably, < detectable limit) linkages between individual glucose units in the deposition aid polymer that are β-1,4 linkages.

[0039] Preferably, the deposition aid polymer comprises <0.1% (preferably, <0.01%; more preferably, <0.001%; most preferably, < detectable limit) linkages between individual glucose units in the deposition aid polymer that are β-1,3 linkages.

[0040] Preferably, the deposition aid polymer comprises <0.001 meq / g (preferably, <0.0001 meq / g; more preferably, <0.00001 meq / g; most preferably, < detectable limit) of siloxane containing functional groups.

[0041] Preferably, the fabric care compositions of the present invention are laundry detergents.

[0042] Preferably, the fabric care composition of the present invention is a laundry detergent. Preferably, the laundry detergent optionally comprises an additive selected from the group consisting of a builder (e.g., sodium citrate), a hydrotrope (e.g., ethanol, propylene glycol), an enzyme (e.g., protease, lipase, amylase), a preservative, a fragrance (e.g., essential oils such as D-limonene), a fluorescent whitening agent, a dye, an additive polymer, and mixtures thereof.

[0043] Preferably, the fabric care composition of the present invention further comprises from 0% to 10% by weight (preferably, from 1% to 10% by weight; more preferably, from 2% to 8% by weight; most preferably, from 5% to 7.5% by weight) of a hydrotrope, based on the weight of the fabric care composition. More preferably, the fabric care composition of the present invention further comprises from 0% to 10% by weight (preferably, from 1% to 10% by weight; more preferably, from 2% to 8% by weight; most preferably, from 5% to 7.5% by weight) of a hydrotrope, based on the weight of the fabric care composition; wherein the hydrotrope is selected from the group consisting of: alkyl hydroxides; glycols, urea; monoethanolamine; diethanolamine; triethanolamine; calcium, sodium, potassium, ammonium and alkanolammonium salts of xylenesulfonic acid, toluenesulfonic acid, ethylbenzenesulfonic acid and isopropylbenzenesulfonic acid; salts thereof and mixtures thereof. Still more preferably, the fabric care composition of the present invention further comprises from 0% to 10% by weight (preferably, from 1% to 10% by weight; more preferably, from 2% to 8% by weight; most preferably, from 5% to 7.5% by weight) of a hydrotrope, based on the weight of the fabric care composition; wherein the hydrotrope is selected from the group consisting of ethanol, propylene glycol, sodium toluene sulfonate, potassium toluene sulfonate, sodium xylene sulfonate, ammonium xylene sulfonate, potassium xylene sulfonate, calcium xylene sulfonate, sodium cumene sulfonate, ammonium cumene sulfonate, and mixtures thereof. Still more preferably, the fabric care composition of the present invention further comprises from 0% to 10% by weight (preferably, from 1% to 10% by weight; more preferably, from 2% to 8% by weight; most preferably, from 5% to 7.5% by weight) of a hydrotrope, based on the weight of the fabric care composition; wherein the hydrotrope comprises at least one of ethanol, propylene glycol, and sodium xylene sulfonate. Most preferably, the fabric care composition of the present invention further comprises from 0 wt% to 10 wt% (preferably, from 1 wt% to 10 wt%; more preferably, from 2 wt% to 8 wt%; most preferably, from 5 wt% to 7.5 wt%) of a hydrotrope, based on the weight of the fabric care composition; wherein the hydrotrope is a mixture of ethanol, propylene glycol and sodium xylene sulfonate.

[0044] Preferably, the fabric care composition of the present invention further comprises 0% to 10% (preferably 0.1% to 10%) by weight of a fragrance, based on the weight of the fabric care composition. More preferably, the fabric care composition of the present invention further comprises 0% to 10% (preferably 0.1% to 10%) by weight of a fragrance, based on the weight of the fabric care composition; wherein the fragrance comprises an essential oil. Most preferably, the fabric care composition of the present invention further comprises 0% to 10% (preferably 0.1% to 10%) by weight of a fragrance, based on the weight of the fabric care composition; wherein the fragrance comprises an ester (e.g., geranyl acetate); a terpene (e.g., geraniol, citronellol, linalool, limonene) and an aromatic compound (e.g., vanilla, eugenol).

[0045] Preferably, the fabric care compositions of the present invention further comprise from 0 wt% to 30 wt% (preferably, from 0.1 wt% to 15 wt%; more preferably, from 1 wt% to 10 wt%) of a builder, based on the weight of the fabric care composition. More preferably, the fabric care composition of the present invention further comprises from 0% to 30% by weight (preferably, from 0.1% to 15% by weight; more preferably, from 1% to 10% by weight) of a builder, based on the weight of the fabric care composition; wherein the builder is selected from the group consisting of: inorganic builders (e.g., tripolyphosphates, pyrophosphates); alkali metal carbonates; borates; bicarbonates; hydroxides; zeolites; citrates (e.g., sodium citrate); polycarboxylates; monocarboxylates; aminotrimethylenephosphonic acid; salts of aminotrimethylenephosphonic acid; hydroxyethylenediphosphonic acid; salts of hydroxyethylenediphosphonic acid; diethylenetriaminepenta(methylenephosphonic acid); salts of diethylenetriaminepenta(methylenephosphonic acid); ethylenediaminetetraethylenephosphonic acid; salts of ethylenediaminetetraethylenephosphonic acid; oligomeric phosphonates; polymeric phosphonates; and mixtures thereof. Most preferably, the fabric care compositions of the present invention further comprise from 0 wt % to 30 wt % (preferably, from 0.1 wt % to 15 wt %; more preferably, from 1 wt % to 10 wt %) of a builder, based on the weight of the fabric care composition; wherein the builder comprises a citrate (preferably, sodium citrate).

[0046] Preferably, the fabric care composition is in liquid form having a pH of 6 to 12.5; preferably at least 6.5, preferably at least 7, preferably at least 7.5; preferably not more than 12.25, preferably not more than 12, preferably not more than 11.5. Suitable bases for adjusting the pH of the formulation include inorganic bases such as sodium hydroxide (including soda ash) and potassium hydroxide; sodium bicarbonate, sodium silicate, ammonium hydroxide; and organic bases such as monoethanolamine, diethanolamine or triethanolamine; or 2-dimethylamino-2-methyl-1-propanol (DMAMP). Mixtures of bases may be used. Suitable acids for adjusting the pH of aqueous media include inorganic acids such as hydrochloric acid, phosphoric acid and sulfuric acid; and organic acids such as acetic acid. Acid mixtures may be used. The formulation may be adjusted to a higher pH with a base and then back-titrated with an acid to the above range.

[0047] The present invention provides a method of treating a laundry article, the method comprising: providing a laundry article; providing a fabric care composition of the present invention; providing bath water; and applying the bath water and the fabric care composition to the laundry article to provide a treated laundry article; wherein the fabric care benefit agent is associated with the treated laundry article (preferably, wherein the fabric care benefit agent is not covalently bonded to the treated laundry article). More preferably, the present invention provides a method of treating a laundry article, the method comprising: providing a laundry article; providing a fabric care composition of the present invention; providing bath water; and applying the bath water and the fabric care composition to the laundry article to provide a treated laundry article; wherein the fabric care benefit agent is associated with the treated laundry article (preferably, wherein the fabric care benefit agent is not covalently bonded to the treated laundry article), and wherein the deposition aid polymer improves the laundry delivery efficacy of the fabric care benefit agent (preferably, wherein the fabric care benefit agent is a fabric softening silicone).

[0048] Some embodiments of the present invention will now be described in detail in the following examples.

[0049] The characteristics of the modified carbohydrate polymers in the examples are as follows.

[0050] Volatile matter and ash content (measured as sodium chloride) were determined as described in ASTM method D-2364.

[0051] Total Kjeldahl nitrogen (TKN) was determined in duplicate using a Buchi KjelMaster K-375 automated Kjeldahl analyzer. TKN values were corrected for volatile matter and ash.

[0052] Example S1: Synthesis of branched cationic dextran polymer

[0053] To a 500 mL four-necked round bottom flask equipped with a rubber serum cap, nitrogen inlet, pressure equalizing addition funnel, paddle and motor, a subsurface thermocouple connected to a J-KEM controller, and a Friedrich condenser connected to a mineral oil bubbler was added dextran (30.33 g; Aldrich product #D4876) and deionized water (160.75 g). The weight average molecular weight of the dextran was 130,000 to 170,000 Daltons. A 70% aqueous solution of 2,3-epoxypropyltrimethylammonium chloride (27.13 g; 151, available from SKW QUAB Chemicals). The contents of the flask were stirred until the dextran was dissolved in the deionized water. While stirring the contents, the apparatus was purged with nitrogen to displace any oxygen entrained in the system. The nitrogen flow rate was approximately 1 bubble / second. The mixture was purged with nitrogen while stirring for one hour. Using a plastic syringe, 25% aqueous sodium hydroxide solution (4.76 g) was added to the contents of the flask over a period of several minutes while stirring under nitrogen. The contents of the flask were then stirred under nitrogen for 30 minutes. The contents of the addition funnel were then added dropwise to the contents of the flask over a period of several minutes while stirring continuously under nitrogen. After the contents of the addition funnel were transferred to the contents of the flask, the mixture was stirred for 5 minutes. Heat was then applied to the contents of the flask using a heating mantle controlled by a J-KEM controller set at 55°C. The contents of the flask were heated to 55°C and maintained at this temperature for 90 minutes. The contents of the flask were then cooled to room temperature while maintaining a positive nitrogen pressure in the flask. When the contents of the flask reached room temperature, acetic acid (2.50 g) was added dropwise to the contents of the flask via a syringe and the contents of the flask were stirred for 5 minutes. The polymer was recovered by non-solvent precipitation of the aqueous solution with excess methanol. The precipitated cationic dextran polymer was then recovered by filtration through a Buchner funnel and dried under vacuum at 50° C. overnight. The product branched cationic dextran polymer was an off-white solid (24.3 g) with a volatile content of 3.65% and an ash content of 0.37% (calculated as sodium chloride). Volatiles and ash were measured as described in ASTM method D-2364. The Kjeldahl nitrogen content was measured using a Buchi KjelMaster K-375 automatic analyzer and was found to be 1.41% (corrected for volatiles and ash), which corresponds to a trimethylammonium degree of substitution CS of 0.19. The weight average molecular weight M of the product cationic dextran polymer was 0. W It is 1,820,000 Daltons.

[0054] Comparative Examples CF1 to CF2 and Examples F1 to F4: Fabric Care Compositions

[0055] Fabric care compositions were prepared in each of Comparative Examples CF1 to CF2 and Examples F1 to F4 having the formulations described in Table 1 and prepared by standard laundry formulation procedures.

[0056] Table 1

[0057]

[0058]

[0059] Siloxane washing deposition

[0060] For each of the compositions of Comparative Examples CF1 to CF2 and Examples F1 to F4, the silicone-containing fabric care compositions were evaluated for silicone wash deposition on cotton. The wash deposition was determined in a Terg-O-tometer under typical wash conditions (ambient wash temperature, water hardness: 200 ppm, CaCl2 0.04 wt. %). 2+ :Mg 2+ The cotton was washed with a fabric care composition containing silicone (using a fabric care composition containing silicone at a dosage of 1.0 g / L of water) at a molar ratio of 3:1, a 16-minute wash cycle and a three-minute rinse.

[0061] The surface deposition of silicone on the cotton was then determined by X-ray photoelectron spectroscopy (XPS). The bulk silicone concentration on the cotton was also measured by X-ray fluorescence spectroscopy (XRF). The results are provided in Table 2.

[0062] The volatile matter content and ash content (calculated as sodium chloride) measured as described in ASTM method D-2364 and the Kjeldahl nitrogen content measured using a Buchi KjelMaster K-375 automatic analyzer (calibrated for volatile matter and ash) and the corresponding calculated degree of substitution CS for trimethylammonium are also provided in Table 2.

[0063] Table 2

[0064]

[0065] Anti-fouling redeposition

[0066] The results were obtained by using a Terg-O-tometer under typical washing conditions (ambient washing temperature, water hardness: 200 ppm, Ca 2+ :Mg 2+The anti-soil redeposition properties of these fabric care compositions were evaluated for each of the compositions of Comparative Examples CF1 to CF2 and Example F1 using a 0.5 g / L detergent wash (3:1 molar ratio, 60-minute wash and 3-minute rinse, 1 L / wash) on four types of fabric (cotton double-weave, cotton, polyester / cotton blend, cotton terry). Orange (high iron content) clay slurry (0.63 g Red Art Clay) and dust sebum dispersion (2.5 g) were added as soil loads. After washing, the fabric swatches were dried and read on a Mach 5 color instrument to calculate the whiteness index (WI) according to ASTM E313. The results are provided in Table 3 as the Δ Whiteness Index (ΔWI E313), where lower values are better.

[0067] Table 3

[0068]

Claims

1. A fabric care composition comprising, based on the weight of the fabric care composition: 50% to 75% by weight water; 15% to 30% by weight of a cleansing surfactant; 0.1% to 3% by weight of a fabric softening silicone, wherein the fabric softening silicone is an anionic silicone polymer incorporating carboxyl functional groups, wherein the fabric softening silicone is in the form of an emulsion; and 0.1 wt% to 2.25 wt% of a deposition aid polymer, wherein the deposition aid polymer is a branched glucan polymer functionalized with a quaternary ammonium moiety, wherein the quaternary ammonium moiety has the formula (A) bonded to a pendant oxygen on the branched glucan polymer in is a pendant oxygen on the branched glucan polymer; wherein X is a divalent linking group that bonds the quaternary ammonium moiety to the pendant oxygen on the branched glucan polymer, each R4 is independently selected from C1-7 alkyl, and R5 is selected from C1-22 alkyl; wherein the deposition aid polymer comprises <0.1% of beta-glucose units -1,3 linkages, wherein the branched glucan polymer comprises a plurality of glucose structural units; in 90 mol% to 98 mol% of the glucose structural units are linked by α-D-1,6 bonds, and 2 mol% to 10 mol% of the glucose structural units are linked by α-1,3 bonds; and wherein the deposition aid polymer enhances the deposition of the fabric softening silicone from the fabric care composition onto fabric.

2. A fabric care composition according to claim 1 wherein the deposition aid polymer has a Kjeldahl nitrogen content corrected for ash and volatiles of from 0.5 wt% to 5.0 wt%.

3. The fabric care composition of claim 1, wherein the fabric care composition is a laundry detergent.

4. The fabric care composition of claim 3, wherein the cleansing surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, and mixtures thereof.

5. A fabric care composition according to claim 4, wherein the detersive surfactant comprises a mixture of linear alkylbenzene sulfonate, sodium lauryl ethoxysulfate and a nonionic alcohol ethoxylate.

6. A method of treating an article of clothing, the method comprising: Provide clothing products; Selecting the fabric care composition according to claim 1; Provide bath water; and applying the bath water and the fabric care composition to the laundry article to provide a treated laundry article; wherein the fabric softening silicone is not covalently bonded to the treated laundry article.

7. The method of claim 6, wherein the fabric care composition is a laundry detergent and wherein the detersive surfactant comprises a mixture of linear alkylbenzene sulfonate, sodium lauryl ethoxysulfate, and a nonionic alcohol ethoxylate.

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