Laundry fragrance formulations

Abstract

A laundry fragrance formulation is provided, comprising water, a solid carrier, a structuring agent and a fragrance additive, the laundry fragrance formulation being in a solid form.

Description

[Technical field]

[0001] The present invention relates to a laundry fragrance formulation. In particular, the present invention relates to a laundry fragrance formulation comprising water, a solid carrier, a structuring agent and a fragrance additive, the laundry fragrance formulation being in a solid form.

[0002] For decades, consumers have been demanding to provide fragrance to laundry during the washing process. Currently, many scented fabric softeners are available to consumers. Such products typically combine fragrance with softeners and conditioning agents to provide laundry with benefits such as fresh smell, softness, no static electricity, no wrinkles, or easy ironing. Some consumers want more fragrance benefits. These consumers are called scent seekers and are known to over-inject laundry products, such as laundry detergents and fabric softeners, to provide laundry with the desired freshness. There is still a need to provide consumers with fragrance delivery products that provide laundry with enhanced freshness. Such fragrance compositions should be able to be used by consumers independently of other laundry products, so that the laundry fragrance level desired by each consumer can be obtained in a cost-effective manner.

[0003] A laundry scent additive is disclosed by Aouad in U.S. Patent No. 9,453,189, which allows the consumer to control the amount of scent imparted to laundry. Aouad discloses a composition comprising a plurality of pastilles, the pastilles comprising (a) polyethylene glycol and (b) friable fragrance microcapsules, the fragrance microcapsules comprising an encapsulated fragrance, each of the pastilles having a mass of about 0.95 mg to about 2 g, and each of the pastilles having a hemispherical or compressed hemispherical shape.

[0004] Nevertheless, there remains a need for new laundry fragrance additives. In particular, it would be desirable to replace a portion of the solid carrier in fragrance additives with water to reduce the cost of conventional laundry fragrance compositions while retaining the structural and fragrance delivery properties associated with such systems.

[0005] The present invention provides a laundry fragrance formulation comprising 5-40% by weight of water, based on the weight of the laundry fragrance formulation, 35-93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation, 0.05-5% by weight of a structuring agent, based on the weight of the laundry fragrance formulation, and 1-25% by weight of a fragrance additive, based on the weight of the laundry fragrance formulation, wherein the laundry fragrance formulation is a solid.

[0006] The present invention relates to a laundry fragrance formulation comprising: (i) 5 to 40% by weight of water, based on the weight of the laundry fragrance formulation; (ii) 35 to 93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation; and (iii) 0.05 to 5% by weight of a structuring agent, based on the weight of the laundry fragrance formulation, which is an alkali swellable emulsion polymer, comprising: (a) 40 to 74.5% by weight of acrylic acid C, based on the weight of the alkali swellable emulsion polymer. 1-4 (b) 20 to 50 weight percent, based on the weight of the alkali swellable emulsion polymer, of C 3-6 (c) 0.2 to 10 weight percent, based on the weight of the alkali swellable emulsion polymer, of structural units of a specific linked monomer of formula I. H2C=C(R 2 )C(O)X(CH2CH2O) n (CH(R 3 )CH2O) m R 1 (I) wherein X is selected from the group consisting of -O- and -N(H)-; R 1 is C 8-24 Alkyl, C 8-16 Alkylphenyl and C 13-36aralkylphenyl; R 2 is selected from the group consisting of hydrogen and methyl; R 3 is selected from the group consisting of methyl and ethyl, n is an average of 6 to 100, and m is an average of 0 to 50, with the proviso that n≧m and n+m is 6 to 100; and (d) 0 to 2.5 wt. % of a structuring agent comprising structural units of a multiethylenically unsaturated crosslinking monomer, based on the weight of the alkali swellable emulsion polymer; and (iv) 1 to 25 wt. % of a scent additive, based on the weight of the laundry scent formulation, wherein the laundry scent formulation is a solid.

[0007] The present invention provides a laundry fragrance formulation comprising 5-40% by weight of water, based on the weight of the laundry fragrance formulation, 35-93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation, 0.05-2% by weight of a structuring agent, based on the weight of the laundry fragrance formulation, which is a cellulose derivative, and 1-25% by weight of a scent additive, based on the weight of the laundry fragrance formulation, wherein the laundry fragrance formulation is a solid.

[0008] The present invention provides a laundry fragrance formulation comprising 5-40% by weight of water, based on the weight of the laundry fragrance formulation, 35-93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation, 0.05-5% by weight of a structuring agent which is a hydrophobically modified alkylene oxide urethane, based on the weight of the laundry fragrance formulation, and 1-25% by weight of a scent additive, based on the weight of the laundry fragrance formulation, wherein the laundry fragrance formulation is a solid.

[0009] The present invention provides a laundry fragrance formulation comprising 5-40% by weight of water, based on the weight of the laundry fragrance formulation, 35-93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation, 0.05-5% by weight of a structuring agent, based on the weight of the laundry fragrance formulation, which is a natural gum, and 1-25% by weight of a scent additive, based on the weight of the laundry fragrance formulation, wherein the laundry fragrance formulation is a solid.

[0010] The present invention relates to a laundry fragrance formulation comprising: (i) 5 to 40% by weight of water, based on the weight of the laundry fragrance formulation; (ii) 35 to 93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation; and (iii) 0.05 to 5% by weight of a structuring agent, based on the weight of the laundry fragrance formulation, which is an alkali swellable emulsion polymer, comprising: (a) 40 to 74.5% by weight of acrylic acid C, based on the weight of the alkali swellable emulsion polymer. 1-4 (b) 20 to 50 weight percent, based on the weight of the alkali swellable emulsion polymer, of C 3-6 (c) 0.2 to 10 weight percent, based on the weight of the alkali swellable emulsion polymer, of structural units of a specific linked monomer of formula I. H2C=C(R 2 )C(O)X(CH2CH2O) n (CH(R 3 )CH2O) m R 1 (I) wherein X is selected from the group consisting of -O- and -N(H)-; R 1 is C 8-24 Alkyl, C 8-16 Alkylphenyl and C 13-36 aralkylphenyl; R 2 is selected from the group consisting of hydrogen and methyl; R 3is selected from the group consisting of methyl and ethyl, n is an average of 6 to 100, and m is an average of 0 to 50, with the proviso that n≧m and n+m is 6 to 100; and (d) 0 to 2.5 wt. % of a structuring agent comprising structural units of a multiethylenically unsaturated crosslinking monomer, based on the weight of the alkali swellable emulsion polymer; (iv) 1 to 25 wt. % of a scent additive, based on the weight of the laundry scent formulation; and (v) 0.008 to less than 0.1 wt. % of a drainage aid component, based on the weight of the laundry scent formulation, the drainage aid component comprising 0 to 60 mol. % of units of formula II and 40 to 100 mol. % of units of formula III, based on the weight of the drainage aid component, from 40 to 99 wt. % of the drainage aid component. R x 4 SiO (4-x) / 2 (II) R y 4 R z 5 SiO (4-y-z) / 2 (III) wherein x is selected from the group consisting of 0, 1, 2, and 3; y is selected from the group consisting of 0, 1, and 2; z is selected from the group consisting of 1 and 2, with the proviso that y+z is 1, 2, or 3; 4 are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms; 5 -A c R 6 A is a divalent linking group; c is selected from the group consisting of 0 and 1; and each R 6 are independently selected from groups having 9 to 35 carbon atoms), 1 to 30 weight percent of an organosilicon resin, based on the weight of the drainage aid component, and 0 to 30 weight percent of a hydrophobic additive, based on the weight of the drainage aid component, wherein the laundry fragrance formulation is a solid.

[0011] The present invention provides a method for scenting laundry comprising the steps of: loading a laundry scenting formulation of the present invention into a washing machine or laundry basin; adding fabric articles to the washing machine or laundry basin; loading water into the washing machine or laundry basin; and applying the water and the laundry scenting formulation to the fabric articles, wherein the scent additive comprises a perfume applied to the fabric articles. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Surprisingly, it has been found that the addition of a structurant can replace a portion of the solid carrier used in laundry fragrance formulations with water while maintaining the Shore A hardness of the composition and maintaining (or improving) the delivery of perfume to the laundry.

[0013] Unless otherwise indicated, ratios, percentages, parts, etc. are by weight. Weight percentages (or wt%) in a composition are percentages of dry weight, i.e., excluding any water that may be present in the composition. Percentages of monomer units in a polymer are percentages of solids weight, i.e., excluding any water present in a polymer emulsion.

[0014] As used herein, unless otherwise indicated, the terms "weight average molecular weight" and "Mw" are used interchangeably to refer to weight average molecular weight when measured in a conventional manner using gel permeation chromatography (GPC) and conventional standards such as polystyrene standards. The technique of GPC is discussed in detail in Modem Size Exclusion Chromatography, WW Yau, JJ Kirkland, DDBly; Wiley-Interscience, 1979, and A Guide to Materials Characterization and Chemical Analysis, JP Sibilia; VCH, 1988, p.81-84. Weight average molecular weight is reported herein in units of Daltons.

[0015] The term "solid / solid" in relation to the laundry fragrance composition of the present invention means that when the laundry fragrance composition is placed on a rigid surface and left undisturbed for 24 hours in air at 22°C, 30-50% relative humidity and 101.4 kPa pressure, the laundry fragrance composition does not appreciably change shape.

[0016] Preferably, the laundry fragrance formulation of the present invention comprises from 5% to 40% by weight (preferably from 10 to 38% by weight, more preferably from 15 to 35% by weight, most preferably from 17 to 32% by weight) of water, based on the weight of the laundry fragrance formulation, from 35 to 93.95% by weight (preferably from 40 to 87.925% by weight, more preferably from 46 to 80.9% by weight, most preferably from 52.4 to 76.85% by weight) of a solid carrier, based on the weight of the laundry fragrance formulation, and from 0.05 to 5% by weight (preferably from 0.075 to 2% by weight, more preferably from 0.1% by weight) of a tertiary ingredient, based on the weight of the laundry fragrance formulation. % (preferably 2-20% by weight, more preferably 4-18% by weight, most preferably 6-15% by weight) of a scent additive (preferably the scent additive is selected from the group consisting of free perfume, pro-perfume, encapsulated perfume and mixtures thereof, more preferably the scent additive comprises a mixture of free perfume and encapsulated perfume), based on the weight of the laundry scent formulation, and the laundry scent formulation is a solid (preferably the laundry scent formulation contains less than 3% by weight of laundry actives).

[0017] Preferably, the laundry scented formulation of the present invention comprises 5 to 40% by weight (preferably 10 to 38% by weight, more preferably 15 to 35% by weight, most preferably 17 to 32% by weight) of water, based on the weight of the laundry scented formulation, the water being deionized water.

[0018] Preferably, the laundry fragrance formulation of the present invention comprises from 35 to less than 93.95% by weight (preferably from 40 to 87.925% by weight, more preferably from 46 to 80.9% by weight, most preferably from 52.4 to 76.85% by weight) of a solid carrier, based on the weight of the laundry fragrance formulation, the solid carrier being selected from the group consisting of polyethylene, polypropylene, copolymers of polyethylene and polypropylene, polyesters (e.g. polyethylene glycol), biodegradable polymers (e.g. polylactides and polyglycolic acid), polyurethanes, polyamides, polycarbonates, polysulfonates, polysiloxanes, polydienes (e.g. polybutylene, natural and synthetic rubber), polyacrylates (e.g. polymethyl methacrylate), polystyrene, polyacrylonitrile butadiene styrene terpolymers, starch, and mixtures thereof. More preferably, the laundry fragrance formulation of the present invention comprises 35 to 93.95% by weight (preferably 40 to 87.925% by weight, more preferably 46 to 80.9% by weight, most preferably 52.4 to 76.85% by weight) of a solid carrier, based on the weight of the laundry fragrance formulation, the solid carrier comprising polyethylene glycol (preferably, the polyethylene glycol has a weight average molecular weight of 2,000 to 20,000 Daltons (preferably, 3,000 to 15,000 Daltons, more preferably, 4,000 to 12,000 Daltons, even more preferably, 5,000 to 11,000 Daltons, most preferably, 7,000 to 9,000 Daltons)).Even more preferably, the laundry fragrance formulation of the present invention comprises 35 to 93.95% by weight (preferably 40 to 87.925% by weight, more preferably 46 to 80.9% by weight, most preferably 52.4 to 76.85% by weight) of a solid carrier, based on the weight of the laundry fragrance formulation, the solid carrier comprising 50 to 100% by weight (preferably 55 to 95% by weight, more preferably 60 to 95% by weight, most preferably 65 to 92.5% by weight) of polyethylene glycol (preferably The polyethylene glycol has a weight average molecular weight of 2,000 to 20,000 daltons (preferably 3,000 to 15,000 daltons, more preferably 4,000 to 12,000 daltons, even more preferably 5,000 to 11,000 daltons, and most preferably 7,000 to 9,000 daltons), and 0 to 50% by weight (preferably 5 to 45% by weight, more preferably 5 to 40% by weight, and most preferably 7.5 to 35% by weight) of starch based on the weight of the solid carrier. Most preferably, the laundry fragrance formulation of the present invention comprises 35 to 93.95% by weight (preferably 40 to 87.925% by weight, more preferably 46 to 80.9% by weight, most preferably 52.4 to 76.85% by weight) of a solid carrier, based on the weight of the laundry fragrance formulation, the solid carrier being a polyethylene glycol (preferably, the polyethylene glycol has a weight average molecular weight of 2,000 to 20,000 Daltons (preferably, 3,000 to 15,000 Daltons, more preferably, 4,000 to 12,000 Daltons, even more preferably, 5,000 to 11,000 Daltons, most preferably, 7,000 to 9,000 Daltons)).

[0019] Optionally, the solid carrier may contain a low molecular weight polyethylene glycol to adjust certain properties of the solid carrier such as viscosity, melting point, water solubility, etc. Preferably, the low molecular weight polyethylene glycol has a weight average molecular weight of 200 to 600 Daltons (preferably, 300 to 500 Daltons, more preferably, 350 to 475 Daltons, and most preferably, 375 to 425 Daltons).

[0020] The polyethylene glycol used in the solid carrier can optionally contain monomers other than ethylene oxide, especially at low levels. Examples of such other monomers include other alkylene oxides (e.g., propylene oxide), glycidyl and other epoxide-containing monomers, formaldehyde, organic alcohols and polyol monomers. Such other monomers can be included in the polyethylene glycol as long as the resulting material is solid at room temperature.

[0021] Preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent, based on the weight of the laundry fragrance formulation, selected from the group consisting of high molecular weight polymers of acrylic acid (e.g. homopolymers and acrylic acid crosslinked with allyl ether pentaerythritol, allyl ether of sucrose or allyl ether of propylene), alkali swellable emulsion polymers, cellulose derivatives, hydrophobically modified alkylene oxide urethanes, natural gums and mixtures thereof. More preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent, based on the weight of the laundry fragrance formulation, selected from the group consisting of alkali swellable emulsion polymers, natural gums and mixtures thereof. Most preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent, based on the weight of the laundry fragrance formulation, which is an alkali swellable emulsion polymer.

[0022] Preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent based on the weight of the laundry fragrance formulation, the structuring agent being a high molecular weight polymer of acrylic acid. More preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent based on the weight of the laundry fragrance formulation, the structuring agent being a high molecular weight polymer of acrylic acid having a molecular weight of 100,000 to 5,000,000 Daltons (preferably 200,000 to 4,500,000 Daltons, more preferably 425,000 to 4,250,000 Daltons). Most preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt.-% (preferably 0.075 to 2 wt.-%, more preferably 0.1 to 1 wt.-%, most preferably 0.15 to 0.6 wt.-%) of a structuring agent based on the weight of the laundry fragrance formulation, the structuring agent being a high molecular weight polymer of acrylic acid having a molecular weight of 100,000 to 5,000,000 Daltons (preferably 200,000 to 4,500,000 Daltons, more preferably 425,000 to 4,250,000 Daltons), the high molecular weight polymer of acrylic acid being selected from homopolymers of acrylic acid and acrylic acid crosslinked with allyl ether pentaerythritol, allyl ether sucrose or allyl ether of propylene.

[0023] Preferably, the laundry fragrance formulation of the present invention comprises 0.05-5 wt.-% (preferably 0.075-2 wt.-%, more preferably 0.1-1 wt.-%, most preferably 0.15-0.6 wt.-%) of a structuring agent based on the weight of the laundry fragrance formulation, the structuring agent being an alkali swellable emulsion polymer. More preferably, the laundry fragrance formulation of the present invention comprises 0.05-5 wt.-% (preferably 0.075-2 wt.-%, more preferably 0.1-1 wt.-%, most preferably 0.15-0.6 wt.-%) of a structuring agent based on the weight of the laundry fragrance formulation, the structuring agent being an alkali swellable emulsion polymer comprising (a) structural units of at least one nonionic vinyl monomer, (b) structural units of at least one acidic vinyl monomer, (c) structural units of at least one polyunsaturated amphiphilic macromonomer and, optionally, (d) structural units of at least one multiethylenically unsaturated crosslinking monomer.

[0024] Examples of non-ionic vinyl monomers include (meth)acrylic acid C 1-30 Alkyl (e.g., methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, sec-butyl (meth)acrylate, iso-butyl (meth)acrylate, tert-butyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate, octyl (meth)acrylate, 2-ethyl-hexyl (meth)acrylate, decyl (meth)acrylate, isodecyl (meth)acrylate, lauryl (meth)acrylate, tetradecyl (meth)acrylate, hexadecyl (meth)acrylate, stearyl (meth)acrylate, behenyl (meth)acrylate), C 1-30Included are alkyl(meth)acrylamides, styrene, substituted styrenes (e.g., vinyl toluene, butyl styrene, isopropyl styrene, para-chlorostyrene), vinyl esters (e.g., vinyl acetate, vinyl butyrate, vinyl caproate, vinyl pivalate, vinyl neodecanoate), unsaturated nitriles (e.g., methacrylonitrile, acrylonitrile), unsaturated silanes (e.g., trimethylvinylsilane, dimethylethylvinylsilane, allyldimethylphenylsilane, allyltrimethylsilane, 3-allylamidopropyltrimethylsilane, 3-trimethylsilylpropyl methacrylate), and mixtures thereof.

[0025] Acid vinyl monomers include acidic polymerizable ethylenically unsaturated monomers containing at least one carboxylic acid, sulfonic acid or phosphonic acid group. Examples of acidic vinyl carboxylic acid monomers include (meth)acrylic acid, itaconic acid, citraconic acid, maleic acid, fumaric acid, crotonic acid, aconitic acid, maleic acid, fumaric acid, itaconic acid, aconitic acid, C 1-18 Examples of the sulfonic acid monomer include alkyl monoesters, anhydrides of dicarboxylic acids, and their salts. Examples of the sulfonic acid monomer include vinyl sulfonic acid, 2-sulfoethyl methacrylate, styrene sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, allyloxybenzene sulfonic acid, and their salts. Examples of the phosphonic acid monomer include vinyl phosphonic acid, allyl phosphonic acid, 3-acrylamidopropyl phosphonic acid, and their salts.

[0026] Preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is an alkali swellable emulsion polymer, based on the weight of the laundry fragrance formulation, the alkali swellable emulsion polymer comprising (a) 40 to 74.5 wt. % (preferably 50 to 72 wt. %, more preferably 55 to 70 wt. %, most preferably 58 to 68 wt. %) of acrylic acid C, based on the weight of the alkali swellable emulsion polymer.1-4 Alkyl (preferably acrylic acid C 2-4 alkyl, more preferably acrylic acid C 2-3 (b) 20 to 50% by weight (preferably 25 to 45% by weight, more preferably 29 to 40% by weight, most preferably 33 to 37% by weight) of structural units of C, based on the weight of the alkali swellable emulsion polymer. 3-6 (c) from 0.2 to 10% by weight (preferably from 0.3 to 8% by weight, more preferably from 0.5 to 5% by weight, and most preferably from 0.5 to 2% by weight) of structural units of a specific linked monomer of formula I, based on the weight of the alkali-swellable emulsion polymer. H2C=C(R 2 )C(O)X(CH2CH2O) n (CH(R 3 )CH2O) m R 1 (I) wherein X is selected from the group consisting of -O and -N(H)- (preferably, X is -O-); R 1 is C 8-24 Alkyl, C 8-16 Alkylphenyl and C 13-36 aralkylphenyl (preferably R 1 is linear saturated C 10-24 More preferably, R 1 is linear saturated C 12-20 is an alkyl group, most preferably R 1 is linear saturated C 16-18 R is an alkyl group; 2 are independently selected from the group consisting of hydrogen and methyl (preferably, R 2 is a methyl group), R 3is selected from the group consisting of methyl and ethyl, n is an average of 6 to 100 (preferably, n is an average of 7.5 to 50, more preferably, n is an average of 10 to 30, and most preferably, n is an average of 12 to 25), and m is an average of 0 to 50 (preferably, m is an average of 0 to 25, m is an average of 0 to 10, even more preferably, m is an average of 0 to 5, and most preferably, m is 0), with the proviso that n≧m and n+m is 6 to 100. (preferably, n+m is 7.5 to 75, more preferably, n+m is 10 to 40, even more preferably, n+m is 12 to 30, and most preferably, n+m is 12 to 25), and (d) comprises 0 to 2.5 wt % (preferably, 0 to 1 wt %, more preferably, 0 to 0.5 wt %, and most preferably, 0.1 to 0.2 wt %) of structural units of a multi-ethylenically unsaturated crosslinking monomer based on the weight of the alkali-swellable emulsion polymer.

[0027] Preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is an alkali swellable emulsion polymer, based on the weight of the laundry fragrance formulation, the alkali swellable emulsion polymer comprising (a) 40 to 74.5 wt. % (preferably 50 to 72 wt. %, more preferably 55 to 70 wt. %, most preferably 58 to 68 wt. %) of acrylic acid C, based on the weight of the alkali swellable emulsion polymer. 1-4 Alkyl (preferably acrylic acid C 2-4 alkyl, more preferably acrylic acid C 2-3 (b) 20 to 50% by weight (preferably 25 to 45% by weight, more preferably 29 to 40% by weight, most preferably 33 to 37% by weight) of structural units of C, based on the weight of the alkali swellable emulsion polymer. 3-6(c) from 0.2 to 10% by weight (preferably from 0.3 to 8% by weight, more preferably from 0.5 to 5% by weight, and most preferably from 0.5 to 2% by weight) of structural units of a specific linked monomer of formula Ia, based on the weight of the alkali-swellable emulsion polymer.

[0028] [ka] (In the formula, R 1 is the linear saturated C 10-24 is an alkyl group (preferably R 1 is linear saturated C 12-20 More preferably, R 1 is linear saturated C 16-18 R is an alkyl group; 2 is selected from the group consisting of hydrogen and methyl (preferably, R 2 is a methyl group), n is an average of 7.5 to 50 (preferably, n is an average of 10 to 30, and more preferably, n is an average of 12 to 25), and (d) the alkali-swellable emulsion polymer contains 0 to 2.5 wt % (preferably, 0 to 1 wt %, more preferably, 0 to 0.5 wt %, and most preferably, 0.1 to 0.2 wt %) of structural units of a multi-ethylenically unsaturated crosslinking monomer based on the weight of the alkali-swellable emulsion polymer.

[0029] Preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry scent formulation. More preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry scent formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, hydroxyalkyl celluloses, and mixtures thereof. Even more preferably, the laundry fragrance formulation of the present invention comprises from 0.05 to 5 wt. %, preferably from 0.075 to 2 wt. %, more preferably from 0.1 to 1 wt. %, most preferably from 0.15 to 0.6 wt. %, based on the weight of the laundry fragrance formulation, of a structuring agent which is a cellulose derivative, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses being hydroxy-(C 1~4 ) Alkyl C 1~4More preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses being selected from the group consisting of hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, and mixtures thereof. Most preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses being hydroxyethyl methyl cellulose.

[0030] Preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses having a weight average molecular weight M of 25,000 to 4,000,000 Daltons (preferably 25,000 to 1,500,000 Daltons, more preferably 25,000 to 500,000 Daltons, most preferably 25,000 to 150,000 Daltons). WMore preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses having a weight average molecular weight M of 25,000 to 4,000,000 Daltons (preferably 25,000 to 1,500,000 Daltons, more preferably 25,000 to 500,000 Daltons, most preferably 25,000 to 150,000 Daltons). W and the hydroxyalkyl alkyl cellulose is selected from hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, and mixtures thereof. Most preferably, the laundry fragrance formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses having a weight average molecular weight M of 25,000 to 4,000,000 Daltons (preferably 25,000 to 1,500,000 Daltons, more preferably 25,000 to 500,000 Daltons, most preferably 25,000 to 150,000 Daltons). W and the hydroxyalkyl alkyl cellulose is hydroxyethyl methyl cellulose.

[0031] Preferably, the laundry fragrance formulation of the present invention comprises 0.05-5 wt. % (preferably 0.075-2 wt. %, more preferably 0.1-1 wt. %, most preferably 0.15-0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry fragrance formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, which are cellulose ethers having an average number of alkyl and hydroxyalkyl derivatives of 1-3 (preferably 1.5-3, more preferably 2-3) substituents per anhydroglucose unit. Preferably, the hydroxyalkyl group has 1-4 carbon atoms (preferably 1-3 carbon atoms, more preferably 2-3 carbon atoms, most preferably 2 carbon atoms). Preferably, the alkyl group has 1-4 carbon atoms (preferably 1-3 carbon atoms, more preferably 1-2 carbon atoms, most preferably 1 carbon atom).

[0032] Preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry scent formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses having a substantially linear cellulose backbone. As used herein and in the appended claims, the term "substantially linear" means that 97 to 100 wt. % (preferably 99 to 100 wt. %) of all glucose units in the hydroxyalkyl alkyl cellulose are present in the main chain of the cellulose backbone.

[0033] Preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent which is a cellulose derivative, based on the weight of the laundry scent formulation, the cellulose derivative being selected from the group consisting of hydroxyalkyl alkyl celluloses, the hydroxyalkyl alkyl celluloses having a substantially β-1,4 bonded backbone. As used herein and in the appended claims, the term "substantially β-1,4 bonded backbone" means that 97 to 100 wt. % (preferably 99 to 100 wt. %) of the glucose units in the hydroxyalkyl alkyl cellulose are bonded to each other via β-1,4 bonds. When less than 100% by weight of the glucose units are linked to each other through β-1,4 linkages, the remaining glucose units may be linked in a variety of ways including, for example, β-1,2, β-1,3, β-1,6, β-2,3, α-1,2, α-1,3, α-1,4, α-1,6, and α-2,3 linkages, and mixtures thereof.

[0034] Optionally, the cellulose derivative is reversibly crosslinked, for example by treatment with a dialdehyde.

[0035] Preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent, based on the weight of the laundry scent formulation, which is a hydrophobically modified alkylene oxide urethane polymer. More preferably, the laundry fragrance formulation of the present invention comprises from 0.05 to 5 wt. % (preferably from 0.075 to 2 wt. %, more preferably from 0.1 to 1 wt. %, most preferably from 0.15 to 0.6 wt. %) of a structuring agent which is a hydrophobically modified alkylene oxide urethane polymer, based on the weight of the laundry fragrance formulation, the hydrophobically modified alkylene oxide urethane polymer being selected from the group consisting of hydrophobically modified ethylene oxide urethane polymers, hydrophobically modified propylene oxide urethane polymers, hydrophobically modified ethylene oxide / propylene oxide urethane copolymers, hydrophobically modified ethylene oxide / butylene oxide urethane copolymers, hydrophobically modified ethylene oxide / propylene oxide / butylene oxide urethane terpolymers, and mixtures thereof. Most preferably, the laundry scent formulation of the present invention comprises from 0.05 to 5 wt. % (preferably from 0.075 to 2 wt. %, more preferably from 0.1 to 1 wt. %, most preferably from 0.15 to 0.6 wt. %) of a structuring agent which is a hydrophobically modified alkylene oxide urethane polymer, based on the weight of the laundry scent formulation, and the hydrophobically modified alkylene oxide urethane polymer is a hydrophobically modified ethylene oxide urethane polymer.

[0036] Preferably, the laundry scent formulation of the present invention comprises 0.05 to 5 wt. % (preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %) of a structuring agent, based on the weight of the laundry scent formulation, wherein the structuring agent is a natural gum. More preferably, the laundry scented formulation of the present invention comprises 0.05 to 5 wt. %, preferably 0.075 to 2 wt. %, more preferably 0.1 to 1 wt. %, most preferably 0.15 to 0.6 wt. %, based on the weight of the laundry scented formulation, of a structuring agent which is a natural gum selected from the group consisting of agar, alginic acid, sodium aldinate, carrageenan, gum arabic, gum ghatti, gum tragacanth, gum karaya, guar gum, locust bean gum, β-glucan, gum dammar, glucomannan, psyllium husk, tara gum, gellan gum, xanthan gum, and mixtures thereof. Even more preferably, the laundry scent formulation of the present invention comprises 0.05 to 5% by weight (preferably 0.075 to 2% by weight, more preferably 0.1 to 1% by weight, most preferably 0.15 to 0.6% by weight) of a structuring agent which is a natural gum, the natural gum being selected from the group consisting of carrageenan, guar gum, locust bean gum, xanthan gum, and mixtures thereof, based on the weight of the laundry scent formulation. Even more preferably, the laundry scent formulation of the present invention comprises 0.05 to 5% by weight (preferably 0.075 to 2% by weight, more preferably 0.1 to 1% by weight, most preferably 0.15 to 0.6% by weight) of a structuring agent which is a natural gum, the natural gum being selected from the group consisting of guar gum, xanthan gum, and mixtures thereof, based on the weight of the laundry scent formulation. Most preferably, the laundry scent formulation of the present invention comprises 0.05 to 5% (preferably 0.075 to 2%, more preferably 0.1 to 1%, most preferably 0.15 to 0.6%) by weight of a structuring agent which is a natural gum, based on the weight of the laundry scent formulation, the natural gum being xanthan gum.

[0037] Preferably, the laundry fragrance formulation of the present invention comprises less than 0.5% by weight (preferably less than 0.01% by weight, more preferably less than 0.001% by weight, even more preferably less than 0.0001% by weight, most preferably below the detection limit) of crosslinked carboxymethylcellulose, based on the weight of the laundry fragrance formulation.

[0038] Preferably, the laundry fragrance formulation of the present invention comprises 1-25% by weight (preferably 2-20% by weight, more preferably 4-18% by weight, most preferably 6-15% by weight) of fragrance additive based on the weight of the laundry fragrance formulation, the fragrance additive being selected from the group consisting of free fragrance, pro-fragrance, encapsulated fragrance and mixtures thereof. More preferably, the laundry fragrance formulation of the present invention comprises 1-25% by weight (preferably 2-20% by weight, more preferably 4-18% by weight, most preferably 6-15% by weight) of fragrance additive based on the weight of the laundry fragrance formulation, the fragrance additive comprising a mixture of free fragrance and encapsulated fragrance. Most preferably, the laundry fragrance formulation of the present invention comprises 2-12% by weight of free fragrance based on the weight of the laundry fragrance formulation and 2-12% by weight of encapsulated fragrance based on the weight of the laundry fragrance formulation.

[0039] The term "perfume" as used herein and in the appended claims refers to an odorant released from the laundry fragrance formulation of the present invention into at least one of: (a) the wash water used to wash the laundry, (b) the rinse water used to wash the laundry, and (c) the laundry in contact with (a) or (b). Perfumes used in laundry fragrance formulations are typically liquid at ambient temperature. For example, a variety of materials including aldehydes, ketones, and esters are known for use as perfumes. Naturally occurring plant and animal oils and exudates composed of complex mixtures of ingredients are known for use as perfumes. The perfume may include a woody / earthy base with exotic materials such as sandalwood, musk, and patchouli oil. The perfume may be a light floral fragrance such as rose extract, lilac, and violet extract. The perfume may provide a fruity odor such as lime, lemon, and orange. The perfume may provide an aromatherapy effect such as providing a relaxing or refreshing feeling.

[0040] The term "pro-perfume" as used herein and in the appended claims refers to a perfume precursor that releases a desired odor and / or perfume molecule through the cleavage of chemical bonds. Typically, a pro-perfume is a desired perfume ingredient that is chemically bound to a carrier (preferably the carrier is slightly volatile or barely volatile). Pro-perfumes are often designed to increase deposition on fabric articles. The perfume is then released by the cleavage of the bond between the perfume ingredient and the carrier through changes in pH (e.g., exposure to sweat), moisture in the environment, heat, enzyme action, exposure to sunlight during storage or line drying.

[0041] The term "free perfume" as used in this specification and the appended claims refers to a perfume containing less than 0.1% by weight of a perfume carrier, based on the weight of the perfume, wherein the perfume carrier is selected from the group consisting of cyclodextrins, zeolites, and combinations thereof.

[0042] The term "encapsulated perfume" as used herein and in the appended claims refers to an encapsulated perfume. The encapsulated perfume may be friable or moisture activated. Preferably, the encapsulated perfume includes a perfume encapsulated by a melamine / formaldehyde shell. Encapsulated perfumes are commercially available, for example, from Appleton, Quest International, and International Flavor & Fragrances.

[0043] Preferably, the laundry scented formulation of the present invention further comprises a drainage aid component (preferably 0.008 to 5 wt. % (more preferably 0.009 to 0.09 wt. %, even more preferably 0.01 to 0.05 wt. %, most preferably 0.02 to 0.04 wt. %) of the drainage aid component, based on the weight of the laundry scented formulation), which comprises (i) 40 to 99 wt. % (preferably 55 to 99 wt. %, more preferably 65 to 98 wt. %, most preferably 77 to 97 wt. %) of 0 to 60 mol. % of units of formula II and 40 to 100 mol. % of units of formula III, based on the weight of the drainage aid component). R x 4 SiO (4-x) / 2 (II) R y 4 R z 5 SiO (4-y-z) / 2 (III) wherein x is selected from the group consisting of 0, 1, 2, and 3; y is selected from the group consisting of 0, 1, and 2; z is selected from the group consisting of 1 and 2, with the proviso that y+z is 1, 2, or 3; 4 are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms; 5 -A c R 6 A is a divalent linking group; c is selected from the group consisting of 0 and 1; and each R 6are independently selected from groups having 9 to 35 carbon atoms), (ii) 1 to 30% by weight (preferably 1 to 25% by weight, more preferably 2 to 20% by weight, and most preferably 3 to 15% by weight) of an organosilicon resin based on the weight of the dehydration aid component, and (iii) 0 to 30% by weight (preferably 0 to 20% by weight, more preferably 0 to 15% by weight, and most preferably 0 to 8% by weight) of a hydrophobic additive based on the weight of the dehydration aid component.

[0044] Preferably, the drainage aid component comprises 40 to 99 wt. % (preferably 55 to 99 wt. %, more preferably 65 to 98 wt. %, and most preferably 77 to 97 wt. %) of an organopolysiloxane, based on the weight of the drainage aid component, the organopolysiloxane comprising 0 to 60 mol. % of units of formula II and 40 to 100 mol. % of units of formula III. R x 4 SiO (4-x) / 2 (II) R y 4 R z 5 SiO (4-y-z) / 2 (III) wherein x is selected from the group consisting of 0, 1, 2, and 3; y is selected from the group consisting of 0, 1, and 2 (preferably 0 and 1, more preferably 1); z is selected from the group consisting of 1 and 2 (preferably 1), with the proviso that y+z is 1, 2, or 3 (preferably 2); and each R 4 are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms (preferably, C 1-4 Alkyl groups, more preferably C 1-2 alkyl groups, most preferably methyl groups) (preferably not more than one R per Si 1 is a hydroxy group), each R 5 -A c R 6 A is a divalent linking group; c is selected from the group consisting of 0 and 1 (preferably 0); and each R 6are independently selected from groups having 9 to 35 carbon atoms (preferably 10 to 30 carbon atoms, more preferably 10 to 20 carbon atoms, and most preferably 10 to 15 carbon atoms) (preferably, each R 6 contains 0 to 1 oxygen atom, and more preferably, each R 6 does not contain an oxygen atom) (preferably, each R 6 contains 0 nitrogen atoms) (preferably at least 50 mol % (preferably 65 to 100 mol %, more preferably 70 to 100 mol %, most preferably 75 to 100 mol %) of the units of formula III in the organopolysiloxane are at least one R 5 More preferably, the drainage aid component comprises 40 to 99 wt. % (preferably 55 to 99 wt. %, more preferably 65 to 98 wt. %, and most preferably 77 to 97 wt. %) of an organopolysiloxane based on the weight of the drainage aid component, the organopolysiloxane being represented by Formula IV

[0045] [ka] (In the formula, each R 4 are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms (preferably, C 1-4 Alkyl groups, more preferably C 1-2 alkyl groups, most preferably methyl groups) (preferably not more than one R per Si 1 is a hydroxy group), each R 7 is hydrogen, a group having 1 to 8 carbon atoms, R 8 and R 9 (Preferably, each R 7 are independently selected from hydrogen and groups having 1 to 8 carbon atoms, more preferably each R 7 is C 1-4 and even more preferably, each R 7 is C 1-2 alkyl groups, most preferably each R 7 is a methyl group), each R8 are independently selected from acyclic groups having 9 to 35 carbon atoms (preferably, 10 to 30 carbon atoms, more preferably, 10 to 20 carbon atoms, and most preferably, 10 to 15 carbon atoms) (preferably, each R 8 contains 0 to 1 oxygen atom, more preferably each R 8 does not contain an oxygen atom) (preferably, each R 8 contains 0 nitrogen atoms), each R 9 are independently selected from alkylaryl groups, a is 10 to 500, b is 0 to 250, and a+b is 10 to 500 (preferably 25 to 250, more preferably 30 to 100, and most preferably 45 to 75) (preferably a≧b, more preferably a>b) (preferably 60 mol % or more (preferably 65 mol % or more, more preferably 70 mol % or more, and most preferably 75 mol % or more) of the Si atoms in the linear organopolysiloxane of formula IV are bonded to R 8 Most preferably, the dehydration aid component of the present invention contains 40 to 99% by weight (preferably 55 to 99% by weight, more preferably 65 to 98% by weight, and most preferably 77 to 97% by weight) of an organopolysiloxane based on the weight of the dehydration aid component, the organopolysiloxane being represented by formula IV (wherein each R 4 are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms (preferably, C 1-4 Alkyl groups, more preferably C 1-2 alkyl groups, most preferably methyl groups) (preferably not more than one R per Si 1 is a hydroxy group), each R 7 is hydrogen, a group having 1 to 8 carbon atoms, R 8 and R 9 (Preferably, each R 7 are independently selected from hydrogen and groups having 1 to 8 carbon atoms, more preferably each R 7 is C 1-4 and even more preferably, each R 7is C 1-2 alkyl groups, most preferably each R 7 is a methyl group), each R 8 -A c R 10 group, each R 10 are independently selected from acyclic groups having 9 to 35 carbon atoms (preferably acyclic C 10~30 Alkyl groups, more preferably acyclic C 10~20 Alkyl groups, most preferably acyclic C 10~15 alkyl group) (preferably, each R 10 is a hydrocarbyl group; c is selected from the group consisting of 0 and 1 (preferably, c is 0); A is a divalent linking group; and each R 9 is -YR 11 group, Y is selected from the group consisting of divalent alkylene groups having 2 to 10 (preferably 2 to 4, more preferably 2) carbon atoms and 0 to 2 (preferably 0 to 1, more preferably 0) oxygen atoms, R 11 At least one -C6R 12 6 aromatic rings, each R 12 is hydrogen, halogen, hydroxyl, C 1-6 Alkoxy group, C 1-12 or two or more R 12 The groups taken together represent a divalent hydrocarbon group linking two or more aromatic rings together (preferably, each R 9is independently selected from the group consisting of styrene, α-methylstyrene, eugenol, allylbenzene, allylphenyl ether, 2-allylphenol, 2-chlorostyrene, 4-chlorostyrene, 4-methylstyrene, 3-methylstyrene, 4-t-butylstyrene, 2,4-dimethylstyrene, 2,5-dimethylstyrene, 2,4,6-trimethylstyrene, and mixtures thereof, and is most preferably α-methylstyrene), a is 10 to 500, b is 0 to 250, and a+b is 10 to 500 (preferably 25 to 250, more preferably 30 to 100, and most preferably 45 to 75) (preferably a≧b, more preferably a>b) (preferably 60 mol % or more (preferably 65 mol % or more, more preferably 70 mol % or more, and most preferably 75 mol % or more) of Si atoms in the linear organopolysiloxane of formula IV are bonded to R 8 The organopolysiloxane is a linear organopolysiloxane having a group (preferably, b=0).

[0046] Preferably, the organopolysiloxane of the dehydration aid component has a degree of polymerization of 10 to 500. More preferably, the organopolysiloxane of the dehydration aid component has a degree of polymerization of 25 to 250. Even more preferably, the organopolysiloxane of the dehydration aid component has a degree of polymerization of 30 to 100. Most preferably, the organopolysiloxane of the dehydration aid component has a degree of polymerization of 45 to 75.

[0047] Preferably, the organopolysiloxane of the drainage aid component is a linear organopolysiloxane, and the linear organopolysiloxane contains less than 0.1% by weight (preferably less than 0.01% by weight, more preferably less than 0.001% by weight, most preferably less than the detection limit) of trifunctional siloxane units. Preferably, the organopolysiloxane of the drainage aid component is a linear organopolysiloxane, and the linear organopolysiloxane contains less than 0.1% by weight (preferably less than 0.01% by weight, more preferably less than 0.001% by weight, most preferably less than the detection limit) of trifunctional siloxane units, and the linear organopolysiloxane contains less than the detection limit of aromatic moieties (e.g., α-methylstyrene moieties).

[0048] The divalent linking group A, when present in the organopolysiloxane of the drainage aid component, preferably consists of (i) oxygen, (ii) carbon and hydrogen, or (iii) carbon, hydrogen, oxygen and optionally nitrogen, sulfur and / or phosphorus. The oxygen, when present in the divalent linking group A, is selected from the group consisting of ether oxygen, ester oxygen, substituted hydroxyl, substituted alkoxy group, and combinations thereof. The nitrogen, when present in the divalent linking group A, is selected from the group consisting of amino groups, amide groups, and combinations thereof. The divalent linking group A, when present in the organopolysiloxane, is preferably selected from the group consisting of alkylene ester groups, alkylene ether groups, amide groups, polyamino / amide groups, and mercapto groups, such as -O-, -CH2CH2OC(=O)-, -CH2CH2OCH2CH(OH)-, -(CH2)3NHC(=O)-, -(CH2)3NHCH2C(=O)-, -CH2CH2S-, and

[0049] [ka]

[0050] Preferably, the organopolysiloxane of the drainage aid component is non-ionic.

[0051] Preferably, the drainage aid component contains 1 to 30 wt. % (preferably, 1 to 25 wt. %, more preferably, 2 to 20 wt. %, and most preferably, 3 to 15 wt. %) of an organosilicon resin, based on the weight of the drainage aid component, and the organosilicon resin is mainly R3. 13 SiO 1 / 2 and SiO 4 / 2 units (i.e., M and Q units, respectively), where each R 13 is selected from the group consisting of functional or non-functional, substituted or unsubstituted monovalent radicals (preferably hydroxyl, hydrocarbon and hydrocarbonoxy groups). The ratio of the number of M groups to the number of Q groups is preferably 0.4:1 to 2.5:1 (more preferably 0.4:1 to 1.5:1, most preferably 0.5:1 to 1.1:1). The organosilicon resin preferably contains only M and Q units, however, the organosilicon resin may contain only a limited number of R2 units. 13 SiO 2 / 2 Units and R 13 SiO 3 / 2 The organosilicon resin may comprise D and T units (i.e., D and T units, respectively). Preferably, the organosilicon resin is an MQ silicone resin. As used herein, the term "MQ silicone resin" means that, on average, 20 mole percent or less (preferably, 15 mole percent or less, more preferably, 10 mole percent or less, even more preferably, 5 mole percent or less, and most preferably, 1 mole percent or less) of the organosilicon units are composed of D and T units.

[0052] Preferably, the dehydration aid component comprises 0-30% by weight (preferably 0-20% by weight, more preferably 0-15% by weight, most preferably 0-8% by weight) of a hydrophobic additive based on the weight of the dehydration aid component, the hydrophobic additive being selected from the group consisting of silica, titania, alumina, ground quartz, magnesium oxide, zinc oxide, salts of aliphatic carboxylic acids (e.g., calcium stearate or aluminum stearate), reaction products of isocyanates with certain cyclohexylamines and alkylamides (e.g., ethylene bisstearamide or methylene bisstearamide). More preferably, the dehydration aid component of the present invention comprises 0-30% by weight (preferably 0-20% by weight, more preferably 0-15% by weight, most preferably 0-8% by weight) of a hydrophobic additive based on the weight of the dehydration aid component, the hydrophobic additive being selected from silica particles. Most preferably, the dehydration aid component of the present invention contains 0 to 30% by weight (preferably 0 to 20% by weight, more preferably 0 to 15% by weight, most preferably 0 to 8% by weight) of a hydrophobic additive based on the weight of the dehydration aid component, and the hydrophobic additive has an average particle size of 0.1 to 50 μm (preferably 1 to 20 μm) and a molecular weight of at least 50 μm. 2 The silica particles are selected from silica particles having a surface area of ​​1000 nm to 1000 nm / g. The silica particles can be rendered hydrophobic, for example, by treatment with dialkylsilyl and / or trialkylsilyl groups bonded directly onto the silica or by silicone resins. Preferably, the silica particles are rendered hydrophobic with dimethyl and / or trimethylsilyl groups. The silica material can be selected from fumed silica, precipitated silica, hydrothermal silica and gel-forming silica.

[0053] Preferably, the drainage aid component contains less than 0.1% by weight, based on the weight of the drainage aid component, of hydrophobic particulate materials (e.g., silica, titania, alumina, ground quartz, magnesium oxide, zinc oxide, salts of aliphatic carboxylic acids (e.g., calcium stearate or aluminum stearate), reaction products of isocyanates with certain materials (e.g., cyclohexylamine and alkylamides such as ethylene or methylene bisstearamide).

[0054] Preferably, the drainage aid component optionally contains an optional material selected from the group consisting of a binder / encapsulant (eg, a polyacrylic binder), a surfactant, and a solid carrier.

[0055] Binders / encapsulants used in the dehydration aid component may include polyoxyalkylene polymers (e.g., polyethylene glycol, which can be applied melted or as an aqueous solution and spray dried), reaction products of tallow alcohol with ethylene oxide or polypropylene glycol, polycarboxylates (e.g., polyacrylic acid, partial sodium salts of polyacrylic acid, copolymers of acrylic acid and maleic anhydride), cellulose ethers (e.g., sodium carboxymethylcellulose), gelatin, agar, microcrystalline wax, fatty acids or fatty alcohols having 12-20 carbon atoms and melting points in the range of 45-80° C., monoesters of such fatty acids with glycerol, mixtures of water-insoluble waxes having a melting point of 55-100° C. with water-insoluble emulsifiers, glucose or hydrogenated glucose.

[0056] The surfactant used in the drainage aid component can be selected to promote the dispersion of the organopolysiloxane from the binder / encapsulant. Silicone glycols are preferred surfactants for use in combination with many binders / encapsulants. Fatty alcohol ether sulfates or linear alkylbenzene sulfonates are preferred for use in combination with polyacrylic acid type binders / encapsulants. The surfactant may be added to the organopolysiloxane of the drainage aid component, either neat or in an emulsion, before the organopolysiloxane is mixed with the binder / encapsulant, or the surfactant and organopolysiloxane may be added sequentially to the binder / encapsulant.

[0057] The solid carrier used in the drainage aid component is preferably selected from zeolites (e.g. zeolite A, zeolite X), aluminosilicates, silicates (e.g. magnesium silicate), phosphates (e.g. powdered or granular sodium tripolyphosphate), sodium sulfate, sodium carbonate, sodium perborate, cellulose derivatives (e.g. sodium carboxymethylcellulose), granular starch, clays, sodium citrate, sodium acetate, sodium bicarbonate and natural starch.

[0058] Preferably, the laundry perfume formulation of the present invention further comprises an optional ingredient selected from the group consisting of dyes, particulate spacers, foam control agents and mixtures thereof.

[0059] Preferably, the laundry fragrance formulation of the present invention optionally further comprises 0-0.1 wt.-%, preferably 0.001-0.1 wt.-%, more preferably 0.01-0.02 wt.-%, of a dye, based on the weight of the laundry fragrance formulation. Dyes used in laundry fragrance formulations with solid laundry drainage aids may include those typically used in laundry treatment products (e.g. detergents, fabric softeners).

[0060] The laundry scenting formulation of the present invention optionally further comprises a particulate spacer material. More preferably, the laundry scenting formulation of the present invention optionally further comprises a particulate spacer material, wherein 0-50% by weight (preferably 0-45% by weight, more preferably 0-40% by weight) of the solid carrier is replaced by the particulate spacer material. Preferably, the laundry scenting formulation of the present invention optionally further comprises a particulate spacer material, wherein 0-50% by weight (preferably 0-45% by weight, more preferably 0-40% by weight) of the solid carrier is replaced by the particulate spacer material, wherein the particulate spacer material has an average particle size of 55-750 microns (preferably 75-650 microns, more preferably 95-600 microns, most preferably 100-250 microns). Preferably, the particulate spacer material is water-insoluble or exhibits a water dissolution rate significantly lower than the dissolution rate of the solid carrier (i.e. the dissolution rate of the solid carrier divided by the dissolution rate of the particulate spacer material is at least 2). Preferably, the particulate spacer material comprises 0-0.5% by volume (preferably 0.1-0.5%, more preferably 0.15-0.45%, most preferably 0.2-0.45%) of the laundry scenting formulation of the present invention. The particulate spacer material can have a variety of shapes including spherical, polyhedral, granular, fibrous, crystalline. Preferably, the particulate spacer material is solid over a temperature range of 25-70°C. The particulate spacer material is preferably selected from the group consisting of organic particulate materials, inorganic particulate materials and combinations thereof. Preferably, the particulate spacer material is selected from the group consisting of alkali metal borates (e.g., sodium borate, sodium tetraborate, disodium tetraborate, potassium tetraborate), glass microspheres (e.g., soda lime glass microspheres, hollow glass microspheres, solid borosilicate glass microspheres), polyalkylene microspheres (e.g., polyethylene microspheres, polypropylene microspheres), ceramic microspheres, and mixtures thereof.

[0061] Preferably, the laundry fragrance formulation of the present invention optionally further comprises a foam regulator. More preferably, the laundry fragrance formulation of the present invention optionally further comprises a foam regulator, the foam regulator being selected from the group consisting of organomodified silicones, polydimethylsilicones, and fatty acids. Most preferably, the laundry fragrance formulation of the present invention optionally further comprises a foam regulator, with the proviso that, when the foam regulator is an organomodified silicone, said organomodified silicone is compositionally different from that contained in the drainage aid component.

[0062] Preferably, the laundry fragrance formulation of the present invention comprises less than 3% by weight (preferably less than 2% by weight, more preferably less than 1% by weight, even more preferably less than 0.1% by weight, even more preferably less than 0.01% by weight, most preferably less than 0.0001% by weight). Laundry actives include, for example, detergent surfactants, detergent builders, bleaching agents, enzymes, and mixtures thereof. Non-detergent levels of surfactants can be used to aid in the solubilization of drainage aid ingredients in the solid carrier.

[0063] Preferably, the laundry scenting formulation of the present invention is provided as a pastille (more preferably as a plurality of pastilles). More preferably, the laundry scenting formulation of the present invention is provided as a pastille (more preferably as a plurality of pastilles) having a shape selected from the group consisting of tablets, polyhedrons, granules, spheres, hemispheres, compressed hemispheres, lentils and ovals (preferably hemispheres and compressed hemispheres). Most preferably, the laundry scenting formulation of the present invention is provided as a plurality of pastilles having a compressed hemisphere shape. The term "compressed hemisphere" as used in this specification and the appended claims refers to a shape corresponding to an at least partially flattened hemisphere, the radius of the compressed hemisphere along an axis tangent to the flattened surface being shorter compared to the radius of the compressed hemisphere along an axis along the flattened surface. Preferably, the compressed pastille has a height to diameter ratio of 0.01 to 0.4 (preferably 0.1 to 0.4, more preferably 0.2 to 0.3). Preferably, the individual pastilles have a diameter of 0.003 to 0.15 cm. 3Preferably, the pastilles have a weight of between 0.95 mg and 2 g. Preferably, a plurality of pastilles together constitute a unit dose for loading into a washing machine or laundry basin. Preferably, a unit dose of the laundry scenting formulation of the present invention comprises 2 to 40 g of pastilles (preferably 3 to 35 g, more preferably 4 to 30 g, most preferably 5 to 28 g).

[0064] Preferably, the laundry fragrance formulation of the present invention is provided in a package containing a single unit dose or multiple unit doses. The package can be selected from the group consisting of a bottle, a bag or other suitable container. Preferably, the package is a PET bottle.

[0065] Preferably, the package containing the laundry scented formulation of the present invention comprises a dosing means for metering and dispensing the laundry scented formulation into a washing machine or basin. Examples of dosing means include a dispensing cap or a dome-shaped lid operatively attached to the package. The dosing means can be releasably removed from the package and reattached to the package.

[0066] Preferably, the method of making the laundry fragrance formulation of the present invention comprises the steps of providing a solid carrier (preferably the solid carrier has a melting point above 25°C) (preferably the solid carrier is a polyethylene glycol having a melting point above 25°C), providing a structuring agent, providing water, providing a scent additive, and optionally providing a drainage aid component, melting the solid carrier (preferably by heating the solid carrier to a temperature above its melting point), mixing the structuring agent with the water to form a blend, adding the blend to the melted solid carrier to form a mixture, adding the scent additive to the mixture, and optionally adding the drainage aid component (if present), and optional other components (e.g. dyes, specific spacers, foam control agents) to the heated mixture to form a molten composition, and cooling the molten composition (preferably to a temperature below the melting point temperature of the solid carrier) using known techniques to form a non-porous water soluble (or dispersible) solid (e.g. a plurality of pastilles).

[0067] Preferably, the method of perfumed laundry of the present invention comprises the steps of: dosing a laundry fragrance composition of the present invention into a washing machine or laundry basin (preferably a washing machine) (optionally, other fabric care products, e.g., laundry detergent, fabric softener may be dispensed into the washing machine or laundry basin); adding laundry (preferably, the laundry comprises fabric articles, the fabric articles being selected from cotton fabrics and polyester-cotton blend fabrics, more preferably, the laundry comprises fabric articles, the fabric articles being composed of cotton fabrics) to the washing machine or laundry basin (preferably, to the washing machine); dosing water into the washing machine or laundry basin (preferably, to the washing machine); and applying the water and the laundry fragrance composition to the laundry, wherein the fragrance additive comprises a perfume applied to the laundry.

[0068] Some embodiments of the present invention will now be described in detail in the following examples.

[0069] Example S1: Polymer synthesis Deionized water (729 g) and sodium lauryl sulfate (2 g) are added to a 3 liter, 4-neck round bottom flask equipped with a mechanical stirrer, thermocouple, condenser, and nitrogen sparge. The reactor is purged with nitrogen and warmed to 90° C. Separately, (1) a monomer emulsion (A) is prepared by dissolving deionized water (556 g), sodium lauryl sulfate (25 g), ethyl acrylate (EA) (448 g), methacrylic acid (MAA) (151 gm), and a monomer emulsion of the following structure:

[0070] [ka] (In the formula, R 1 is a linear saturated C 16-18 (2) A lipophilic modified monomer (LIPO) having an alkyl group (n is an alkyl group, n is 15-19 on average) is prepared (7 g). (2) A monomer emulsion additive (B) is prepared by mixing trimethylolpropane diallyl ether (TMPDAE) (1.12 g) with MAA (93 g). (3) An initiator solution C1 is prepared by dissolving ammonium persulfate (0.4 g) in deionized water (19 g). (4) An initiator solution C2 is prepared by dissolving ammonium persulfate (0.7 g) in deionized water (42 g). With the reactor temperature at about 90°C, the initiator solution C1 is charged to the reactor. Then, the monomer emulsion (A) is charged to the reactor while simultaneously charging the monomer emulsion additive (B) to the monomer emulsion (A). The rates are controlled so that both feeds are finished in 120 minutes. Separately, the initiator solution C2 is fed to the reactor in 120 minutes. After these additions are complete, the monomer emulsion and initiator feed lines are rinsed with deionized water, followed by chasing the monomers with the free radical catalyst and activator. The resulting latex is recovered and the pH is adjusted to 7 with sodium hydroxide.

[0071] Comparative Examples C1-C4 and Examples 1-4: Laundry scent formulations The solid laundry scent formulations of Comparative Examples C1-C4 and Examples 1-4 were prepared using the amounts of ingredients listed in Table 1 using the following procedure: Polyethylene glycol (PEG) was added to a flask and heated to 80°C to melt. The additives were then added slowly to the molten PEG while stirring. The flask contents were then cooled to 65°C and the fragrance was then added to the flask contents while stirring. The flask contents were then poured onto a smooth metal surface at room temperature to obtain the product of the solid laundry scent formulation in the form of solid flakes.

[0072] [Table 1]

[0073] hardness The indentation hardness of the solid laundry scent formulations prepared according to Comparative Examples C1-C4 and Examples 1-4 was measured according to ASTM D 2240 using a durometer from Shore Instrument and Manufacturing Co. The average Shore A hardness of five separate measurements for each solid laundry scent formulation is shown in Table 2.

[0074] [Table 2]

Claims

1. 1. A laundry fragrance formulation comprising: 5 to 40% by weight or more of water, based on the weight of the laundry fragrance formulation; 35-93.95% by weight of a solid carrier, based on the weight of the laundry fragrance formulation; 0.05 to 5 wt. % of a structuring agent, based on the weight of the laundry fragrance formulation; and 1-25% by weight of a scent additive, based on the weight of the laundry scent formulation; A laundry fragrance formulation, wherein said laundry fragrance formulation is a solid.

2. The structurant is an alkali swellable emulsion polymer, the alkali swellable emulsion polymer being (a) 40 to 74.5 weight percent, based on the weight of the alkali swellable emulsion polymer, of acrylic acid C １－４ Alkyl structural units, (b) 20 to 50 weight percent, based on the weight of the alkali swellable emulsion polymer, of C ３－６ Carboxylic acid monomer structural units, (c) 0.2 to 10 weight percent, based on the weight of said alkali swellable emulsion polymer, of structural units of a specific linked monomer of formula I. H ２ C=C(R ２ )C(O)X(CH ２ CH ２ O) ｎ (CH(R ３ )CH ２ O) ｍ R １ (I) wherein X is selected from the group consisting of —O— and —N(H)—; １ is C ８－２４ Alkyl, C ８－１６ Alkylphenyl and C １３－３６ aralkylphenyl; R ２ is selected from the group consisting of hydrogen and methyl; R ３ is selected from the group consisting of methyl and ethyl, n is an average of 6 to 100, and m is an average of 0 to 50, with the proviso that n >= m and n+m is 6 to 100); 2. The laundry fragrance formulation of claim 1, comprising: (d) 0 to 2.5 weight percent, based on the weight of said alkali swellable emulsion polymer, of structural units of a multi-ethylenically unsaturated crosslinking monomer.

3. 2. A laundry scent formulation according to claim 1, wherein said structuring agent is a cellulose derivative.

4. 2. The laundry scent formulation of claim 1, wherein said structurant is a hydrophobically modified alkylene oxide urethane.

5. 2. The laundry scent formulation of claim 1, wherein said structurant is a natural gum.

6. A laundry fragrance formulation according to claim 1, wherein said structurant is a high molecular weight polymer of acrylic acid having a molecular weight of from 100,000 to 5,000,000 Daltons.

7. 3. The laundry scenting formulation of claim 2, wherein said laundry scenting formulation is in the form of a pastille.

8. 0.008 to less than 0.1 wt. % of a drainage aid component, based on the weight of the laundry scent formulation, said drainage aid component comprising: 40 to 99 weight percent organopolysiloxane, based on the weight of the drainage aid component; 0 to 60 mol % of units of formula II, and R ｘ ４ Yes （４－ｘ）／２ II 40-100 mol % of units of formula III ( ｙ ４ ( ｚ ５ 3) （４－ｙ－ｚ）／２ ..| wherein x is selected from the group consisting of 0, 1, 2, and 3; y is selected from the group consisting of 0, 1, and 2; z is selected from the group consisting of 1 and 2, with the proviso that y+z is 1, 2, or 3; ４ are independently selected from hydrogen, a hydroxyl group, and a group having 1 to 8 carbon atoms; ５ , -A ｃ R ６ A is a divalent linking group; c is selected from the group consisting of 0 and 1; and each R ６ are independently selected from groups having 9 to 35 carbon atoms; 1 to 30% by weight of an organosilicon resin, based on the weight of the dehydration aid component; 0 to 30 weight percent of a hydrophobic additive based on the weight of the drainage aid component; 3. The laundry scent formulation of claim 2 comprising:

9. 3. The laundry scenting formulation of claim 2 further comprising an optional additive selected from the group consisting of dyes, particulate spacers, foam control agents and mixtures thereof.

10. 1. A method for scenting laundry, comprising: dosing a laundry scenting composition according to claim 1 into a washing machine or a laundry basin; adding the fabric article to a washing machine or laundry basin; Adding water to the washing machine or the laundry basin; applying said water and said laundry scent formulation to said fabric articles; The method, wherein the scent additive comprises a perfume that is applied to the fabric article.

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