Personal care composition preservative level optimization

Abstract

The present invention relates to a hair care composition comprising from about 8 to about 17% of one or more surfactants; from about 0.01% to about 10% of one or more surfactant soluble anti-dandruff agents; from about 0.01% to about 5% of one or more thickening polymers based on polyacrylate or polyacrylamide; from about 0.02% to about 0.25% of a salicylate or acid; from about 0.02 to about 0.25% of a benzoate or acid, wherein there is a weight ratio of the salicylate or acid to the benzoate or acid of from about 1: 1 to 12.5: 1.

Description

Technical Field

[0001] The present invention relates to hair care compositions comprising preservatives which exhibit effective microbial preservation in personal care compositions at lower preservative levels. Background Art

[0002] Preservative is a substance that is added to personal care compositions (such as shampoo, shower gel, lotion, ointment, cream and ointment) to inhibit microbial growth, which may be caused by, for example, contamination by consumers when in use. Inhibiting the growth of bacteria, fungi and other microorganisms is essential to maintaining product quality, extending shelf life and protecting consumers. There is a continuous consumer preference for the amount of preservative used in consumer products. On the other hand, microorganisms are exposed to preservatives or antimicrobials that are not sufficient in level and may cause the selection or occurrence of resistant strains. Therefore, it is necessary to use a preservative that is high enough in level to inhibit microbial growth and maintain product quality, but it is low enough to alleviate consumer concerns.

[0003] It has been surprisingly discovered that unprecedentedly low levels of sodium benzoate and sodium salicylate can provide effective microbial preservation in personal care compositions while also addressing consumer demands for lower preservative levels. Summary of the invention

[0004] The present invention relates to a hair care composition comprising from about 8 to about 17% of one or more surfactants; from about 0.01% to about 10% of one or more surfactant-soluble anti-dandruff agents; from about 0.01% to about 5% of one or more polyacrylate- or polyacrylamide-based thickening polymers; from about 0.02-0.25% salicylate or acid; and from about 0.02-0.25% benzoate or acid, wherein the weight ratio of the salicylate or acid to the benzoate or acid is from about 1:1 to 12.5:1.

[0005] These and other features, aspects and advantages of the present invention will become apparent to those skilled in the art from a reading of the present disclosure. DETAILED DESCRIPTION

[0006] Unless otherwise indicated, all percentages and ratios used herein are by weight of the total composition. Unless otherwise indicated, all measurements are understood to be made under ambient conditions, wherein "ambient conditions" means conditions at about 25°C, at about one atmosphere of pressure, and at about 50% relative humidity. All numerical ranges are inclusive of narrower ranges; the upper and lower limits of the ranges described are combinable to form additional ranges not explicitly described.

[0007] The compositions of the present invention may comprise, consist essentially of, or consist of the essential components and optional ingredients described herein. As used herein, "consisting essentially of" means that the composition or component may include additional ingredients as long as the additional ingredients do not materially change the basic and novel characteristics of the claimed composition or method.

[0008] "Applying" or "applying" as used with reference to a composition means applying or spreading the composition of the present invention onto keratinous tissue such as hair.

[0009] "Dermatologically acceptable" means that the compositions or components described are suitable for use in contact with human skin tissue without undue toxicity, incompatibility, instability, allergic response, and the like.

[0010] A "safe and effective amount" refers to an amount of a compound or composition sufficient to significantly induce a positive beneficial effect.

[0011] In the context of the present invention, the term "preservation" refers to the prevention or delay of product deterioration due to microorganisms present in the product or composition. In the context of the present invention, a "preservative agent" or "preservative" is a substance that prevents or delays the growth of microorganisms in a product or composition.

[0012] While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed that the present invention will be better understood from the following description.

[0013] As used herein, the term "fluid" includes liquids and gels.

[0014] As used herein, the articles including "a" and "an" when used in a claim should be understood to mean one or more of what is claimed or described.

[0015] As used herein, "comprising" means that other steps and other ingredients which do not affect the end result can be added. The term encompasses the terms "consisting of" and "consisting essentially of."

[0016] As used herein, "mixture" is intended to include a simple combination of substances as well as any compounds that may result from their combination.

[0017] As used herein, "molecular weight" refers to weight average molecular weight, unless otherwise indicated.Molecular weight is measured using the industry standard method, gel permeation chromatography ("GPC").

[0018] Where content ranges are given, these should be understood to be the total amount of the ingredient in the composition, or where more than one material falls within an ingredient definition, the total amount of all ingredients in the composition that meet the definition.

[0019] For example, if a composition comprises 1% to 5% fatty alcohol, a composition comprising 2% stearyl alcohol and 1% cetyl alcohol and no other fatty alcohols would fall within the range.

[0020] The amount of each specific ingredient or mixtures thereof described below may comprise up to 100% (or 100%) of the total amount of ingredients in the hair care composition.

[0021] As used herein, "personal care composition" includes such liquid compositions as shampoos, shower gels, liquid hand cleansers, hair colorants, facial cleansers, and other surfactant-based compositions.

[0022] As used herein, the terms "including," "comprising," and "containing" are intended to be non-limiting, and are interpreted to mean "having," "having," and "comprising," respectively.

[0023] Unless otherwise specified, all percentages, parts and ratios are based upon the total weight of the compositions of the present invention. All such weights as they pertain to listed ingredients are based on the active level, and, therefore, do not include carriers or by-products that may be included in commercially available materials.

[0024] Unless otherwise indicated, all component or composition levels are in terms of the active portion of that component or composition and are exclusive of impurities, for example, residual solvents or by-products, which may be present in commercially available sources of such component or composition.

[0025] It should be understood that each maximum numerical limit given throughout this specification includes each lower numerical limit, as if such lower numerical limits were expressly written herein. Each minimum numerical limit given throughout this specification will include each higher numerical limit, as if such higher numerical limits were expressly written herein. Each numerical range given throughout this specification will include each narrower numerical range falling within such wider numerical range, as if such narrower numerical ranges were all expressly written herein.

[0026] preservative

[0027] The composition also includes one or more preservatives. Each single preservative can be present in an amount of about 0.02 to about 0.25% by weight of the composition, about 0.02% to about 0.2% by weight of the composition, about 0.02-0.18% by weight of the composition, about 0.02% to about 0.15% by weight of the composition, about 0.04-0.18% by weight of the composition. The preservative can have a low logS water solubility less than 0 or a high logS water solubility of 0 or more. The preservative can have a low logS water solubility less than 0 to about -5.0. The preservative can have a high logS water solubility of 0 to about 1.0. In addition, a combination of high and low logS water solubility preservatives can be used.

[0028] Non-limiting examples of preservatives may be salicylates or acids, benzoates or acids. Non-limiting examples of preservatives may be sodium salicylate, sodium benzoate, potassium salicylate, potassium benzoate, salicylic acid, benzoic acid, MEA-salicylate, MEA-benzoate, TEA-salicylate, TEA-benzoate, calcium salicylate, calcium benzoate, magnesium salicylate, magnesium benzoate, titanium salicylate, titanium benzoate, silver salicylate, silver benzoate, ammonium salicylate, ammonium benzoate, zinc salicylate, zinc benzoate, and combinations thereof.

[0029] The composition may comprise the following weight ratios of salicylate or acid to benzoate or acid: 1:1 to 12.5:1; 1:1 to 10:1; 1:1 to 5:1; 1:1 to 3:1; 1:1 to 2:1; 1:0.9 to 12.5:1; 1:0.8 to 12.5:1; 1:0.75 to 12.5:1; 1:0.9 to 10:1; 1:0.9 to 5:1; 1:0.8 to 5:1; 1:0.75 to 5:1; 1:0.8 to 3:1.

[0030] Some suitable examples of low logS water solubility preservatives include metal pyrithione, organic acids (including but not limited to undecylenic acid, salicylic acid, dehydroacetic acid, sorbic acid), glycols (including but not limited to caprylyl glycol, nordiol), parabens, methylchloroisothiazolinone, benzyl alcohol, ethylenediaminetetraacetic acid, and combinations thereof. An example of a commercially available low logS water solubility preservative system is available under the trade name Geogard 111A TM 、Geoagard221A TM 、MikrokillCOS TM 、Mikrokill ECT TM and Glycacil TM Suitable examples of high logS water-soluble preservatives may include sodium benzoate, methylisothiazolinone, DMDM ​​hydantoin, and combinations thereof.

[0031] Detergent surfactant

[0032] The hair care composition may contain greater than about 8% by weight of a surfactant system that provides cleaning properties to the composition, or may contain greater than 10% by weight of a surfactant system that provides cleaning properties to the composition. The surfactant system may contain one or more surfactants. The one or more surfactants may be sulfate-based surfactants and / or may be substantially free of sulfate-based surfactants. The surfactant may be selected from anionic surfactants, amphoteric surfactants, zwitterionic surfactants, nonionic surfactants, and combinations thereof. Various examples and descriptions of detersive surfactants are shown in U.S. Patent No. 8,440,605; U.S. Patent Application Publication No. 2009 / 155383; and U.S. Patent Application Publication No. 2009 / 0221463, which are incorporated herein by reference in their entirety. As used herein, "substantially free" of sulfate-based surfactants refers to from about 0% to about 3% by weight, alternatively from about 0% to about 2% by weight, alternatively from about 0% to about 1% by weight, alternatively from about 0% to about 0.5% by weight, alternatively from about 0% to about 0.25% by weight, alternatively from about 0% to about 0.1% by weight, alternatively from about 0% to about 0.05% by weight, alternatively from about 0% to about 0.01% by weight, alternatively from about 0% to about 0.001% by weight, and / or alternatively free of sulfate. As used herein, "free" refers to 0% by weight.

[0033] The hair care composition may comprise from about 8% to about 17%, from about 8% to about 16%, from about 8% to about 15%, from about 8% to about 15%, from about 8% to about 14%, from about 8% to about 13%, from about 8% to about 12% by weight of one or more surfactants.

[0034] Suitable anionic surfactants for use in the composition are alkyl sulfates and alkyl ether sulfates. Other suitable anionic surfactants are water-soluble salts of organic sulfuric acid reaction products. Other suitable anionic surfactants are the reaction products of fatty acids esterified with isethionates and neutralized with sodium hydroxide. Other similar anionic surfactants are described in U.S. Pat. Nos. 2,486,921; 2,486,922; and 2,396,278, which are incorporated herein by reference in their entirety.

[0035] Exemplary anionic surfactants for use in the hair care composition include ammonium lauryl sulfate, ammonium laureth sulfate, C10-15 alkyl ammonium sulfate, C10-15 alkyl ammonium sulfate, C11-15 alkyl ammonium sulfate, decyl ammonium sulfate, decyl ammonium sulfate, undecyl ammonium sulfate, undecyl ammonium sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, sodium lauric acid monoglyceride sulfate, sodium lauryl sulfate, sodium laureth sulfate, C10-15 alkyl Polyoxyethylene ether sodium sulfate, C10-15 alkyl sodium sulfate, C11-15 alkyl sodium sulfate, decyl sodium sulfate, decyl polyoxyethylene ether sodium sulfate, undecyl sodium sulfate, undecyl polyoxyethylene ether sodium sulfate, lauryl potassium sulfate, lauryl polyoxyethylene ether potassium sulfate, C10-15 alkyl polyoxyethylene ether potassium sulfate, C11-15 alkyl potassium sulfate, decyl potassium sulfate, decyl polyoxyethylene ether potassium sulfate, undecyl potassium sulfate, undecyl potassium polyoxyethylene ether potassium sulfate, ammonium coconut sulfate, ammonium lauroyl sulfate, sodium coconut sulfate, sodium lauroyl sulfate, potassium coconut sulfate, potassium lauryl sulfate, triethanolamine lauryl sulfate, triethanolamine lauryl sulfate, monoethanolamine coconut sulfate, monoethanolamine lauryl sulfate, and combinations thereof. The anionic surfactant may be sodium lauryl sulfate or sodium lauroyl polyoxyethylene ether sulfate.

[0036] The composition of the present invention may also comprise an anionic surfactant selected from the group consisting of:

[0037] a) R1O(CH2CHR3O) y SO3M;

[0038] b) CH3(CH2) z CHR2CH2O(CH2CH3O) y SO3M; and

[0039] c) mixtures thereof,

[0040] Where R1 represents CH3(CH2) 10 , R2 represents H or a hydrocarbon group containing 1 to 4 carbon atoms such that the sum of the carbon atoms in z and R2 is 8, R3 is H or CH3, y is 0 to 7, when y is not zero (0), the average value of y is about 1, and M is a monovalent or divalent positively charged cation.

[0041] Suitable anionic alkyl sulfate and alkyl ether sulfate surfactants include, but are not limited to, those with branched alkyl chains synthesized from C8 to C18 branched alcohols that can be selected from Guerbet alcohols, alcohols derived from aldol condensation, oxo alcohols, FT oxo alcohols, and mixtures thereof. Non-limiting examples of 2-alkyl branched alcohols include oxo alcohols such as 2-methyl-1-undecanol, 2-ethyl-1-decanol, 2-propyl-1-nonanol, 2-butyl-1-octanol, 2-methyl-1-dodecanol, 2-ethyl-1-undecanol, 2-propyl-1-decanol, 2-butyl-1-nonanol, 2-pentyl-1-octanol, 2-pentyl-1-heptanol, and those sold under the following trade names: (Sasol), (Sasol), and (Shell); and Guerbet and aldol-derived alcohols such as 2-ethyl-1-hexanol, 2-propyl-1-butanol, 2-butyl-1-octanol, 2-butyl-1-decanol, 2-pentyl-1-nonanol, 2-hexyl-1-octanol, 2-hexyl-1-decanol and alcohols sold under the names Those sold under the trade names Sasol or as alcohol ethoxylates and alkoxylates (BASF) and Those sold by BASF.

[0042] Anionic alkyl sulfates and alkyl ether sulfates may also include those synthesized from C8 to C18 branched chain alcohols derived from butene or propylene, which are marketed under the trade name EXXAL TM (Exxon) and The compositions of the present invention may also include sodium tridecyl sulfate.

[0043] Substantially sulfate-free surfactants suitable for use in the composition may include sodium, ammonium, or potassium isethionates; sodium, ammonium, or potassium sulfonates; sodium, ammonium, or potassium ether sulfonates; sodium, ammonium, or potassium sulfosuccinates; sodium, ammonium, or potassium sulfoacetates; sodium, ammonium, or potassium sulfolaurates; sodium, ammonium, or potassium glycinates; sodium, ammonium, or potassium sarcosinates; sodium, ammonium, or potassium glutamates; sodium, ammonium, or potassium alaninates; sodium, ammonium, or potassium carboxylates; sodium, ammonium, or potassium taurates; sodium, ammonium, or potassium phosphates; and combinations thereof.

[0044] The surfactant system may include one or more amino acid-based anionic surfactants. Non-limiting examples of amino acid-based anionic surfactants may include sodium, ammonium or potassium salts of acyl glycinates; sodium, ammonium or potassium salts of acyl sarcosinates; sodium, ammonium or potassium salts of acyl glutamates; sodium, ammonium or potassium salts of acyl alaninates, and combinations thereof.

[0045] The amino acid-based anionic surfactant may be a glutamate, such as an acyl glutamate. Non-limiting examples of acyl glutamate may be selected from sodium cocoyl glutamate, disodium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, sodium lauroyl glutamate, disodium lauroyl glutamate, sodium cocoyl hydrolyzed wheat protein glutamate, disodium cocoyl hydrolyzed wheat protein glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, potassium lauroyl glutamate, dipotassium lauroyl glutamate, potassium cocoyl hydrolyzed wheat protein glutamate, dipotassium cocoyl hydrolyzed wheat protein glutamate, sodium caproyl glutamate, disodium caproyl glutamate, sodium capryloyl glutamate, disodium capryloyl glutamate, potassium capryloyl glutamate, dipotassium capryloyl glutamate, sodium undecylenyl glutamate, disodium undecylenyl glutamate, undecylenyl glutamate, Potassium undecylenyl glutamate, dipotassium undecylenyl glutamate, disodium hydrogenated tallow glutamate, sodium stearoyl glutamate, disodium stearoyl glutamate, potassium stearoyl glutamate, dipotassium stearoyl glutamate, sodium myristoyl glutamate, disodium myristoyl glutamate, potassium myristoyl glutamate, dipotassium myristoyl glutamate, sodium cocoyl / hydrogenated tallow glutamate, sodium cocoyl / palmitoyl / sunflower oleyl glutamate, sodium hydrogenated tallow glutamate, sodium oliveoyl glutamate, disodium oliveoyl glutamate, sodium palmitoleoyl glutamate, disodium palmitoleoyl glutamate, TEA-cocoyl glutamate, TEA-hydrogenated tallow glutamate, TEA-lauroyl glutamate, and mixtures thereof.

[0046] The amino acid-based anionic surfactant can be an alanine salt, such as an acyl alanine salt. Non-limiting examples of acyl alanine salts can include sodium cocoyl alanine, sodium lauroyl alanine, sodium caproyl alanine, sodium N-dodecanoyl-l-alanine, and combinations thereof.

[0047] The amino acid-based anionic surfactant can be a sarcosinate, such as an acyl sarcosinate. Non-limiting examples of sarcosinates can be selected from: sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium myristoyl sarcosinate, sodium caproyl sarcosinate, TEA-cocoyl sarcosinate, ammonium cocoyl sarcosinate, ammonium lauroyl sarcosinate, dimer dilinoleyl dilauroyl glutamate / lauroyl sarcosinate, lauroamphodiacetate disodium lauroyl sarcosinate, lauroyl isopropyl sarcosinate, potassium cocoyl sarcosinate, potassium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, TEA-cocoyl sarcosinate, TEA-lauroyl sarcosinate, TEA-oleoyl sarcosinate, TEA-palm kernel sarcosinate, and combinations thereof.

[0048] The amino acid-based anionic surfactant may be a glycinate, such as an acyl glycinate. Non-limiting examples of acyl glycinates may include sodium cocoyl glycinate, sodium lauroyl glycinate, and combinations thereof.

[0049] The composition may comprise an anionic surfactant selected from the group consisting of sulfosuccinates, isethionates, sulfonates, sulfoacetates, sulfolaurates, glucose carboxylates, alkyl ether carboxylates, acyl taurates, lactylates, alkenyl lactylates and mixtures thereof.

[0050] The compositions of the present invention may also include anionic alkyl and alkyl ether sulfosuccinates and / or dialkyl and dialkyl ether sulfosuccinates and mixtures thereof. The dialkyl and dialkyl ether sulfosuccinates may be C6-15 linear or branched dialkyl or dialkyl ether sulfosuccinates. The alkyl moieties may be symmetrical (i.e., identical alkyl moieties) or asymmetrical (i.e., different alkyl moieties). Non-limiting examples include: disodium lauryl sulfosuccinate, disodium lauryl polyoxyethylene ether sulfosuccinate, sodium ditridecyl sulfosuccinate, sodium dioctyl sulfosuccinate, sodium dihexyl sulfosuccinate, sodium dicyclohexyl sulfosuccinate, sodium diamyl sulfosuccinate, sodium diisobutyl sulfosuccinate, linear bis(tridecyl) sulfosuccinates and mixtures thereof.

[0051] Non-limiting examples of sulfosuccinate surfactants can include disodium N-octadecyl sulfosuccinate, disodium lauryl sulfosuccinate, diammonium lauryl sulfosuccinate, sodium lauryl sulfosuccinate, disodium lauryl polyoxyethylene ether sulfosuccinate, tetrasodium N-(1,2-dicarboxyethyl)-N-octadecyl sulfosuccinate, diamyl ester of sodium sulfosuccinate, dihexyl ester of sodium sulfosuccinate, dioctyl ester of sodium sulfosuccinate, and combinations thereof.

[0052] Suitable isethionate surfactants may include the reaction product of fatty acids esterified with isethionate and neutralized with sodium hydroxide. Suitable fatty acids for isethionate surfactants may be derived from coconut oil or palm kernel oil including the amides of methyl taurine. Non-limiting examples of isethionates may be selected from: sodium lauroyl methyl isethionate, sodium cocoyl isethionate, ammonium cocoyl isethionate, hydrogenated sodium cocoyl methyl isethionate, sodium lauroyl isethionate, sodium cocoyl methyl isethionate, sodium myristoyl isethionate, sodium oleoyl isethionate, sodium oleyl methyl isethionate, sodium palm kernelyl isethionate, sodium stearyl methyl isethionate, and mixtures thereof.

[0053] Non-limiting examples of sulfonates may include α-olefin sulfonates, linear alkylbenzene sulfonates, alkylglyceryl sulfonates, sodium lauryl glucoside hydroxypropyl sulfonate, and combinations thereof.

[0054] Non-limiting examples of sulfoacetates can include sodium lauryl sulfoacetate, ammonium lauryl sulfoacetate, and combinations thereof.

[0055] Non-limiting examples of sulfolaurates may include sodium methyl-2 sulfolaurate, disodium sulfolaurate, and combinations thereof.

[0056] Non-limiting examples of glucose carboxylates can include sodium lauryl glucoside carboxylate, sodium cocoyl glucoside carboxylate, and combinations thereof.

[0057] Non-limiting examples of alkyl ether carboxylates can include sodium laureth-4 carboxylate, sodium laureth-5 carboxylate, sodium laureth-13 carboxylate, sodium C12-13 alkyleth-8 carboxylate, sodium C12-15 alkyleth-8 carboxylate, and combinations thereof.

[0058] Non-limiting examples of acyl taurates can include sodium methyl cocoyl taurate, sodium methyl lauroyl taurate, sodium caproyl methyl taurate, sodium methyl oleoyl taurate, sodium cocoyl taurate, sodium lauroyl taurate, sodium caproyl taurate, and combinations thereof.

[0059] Non-limiting examples of lactate salts may include sodium lactate.

[0060] Non-limiting examples of alkenyl lactylates can include sodium lauroyl lactylate, sodium cocoyl lactylate, and combinations thereof.

[0061] The hair care composition may include an auxiliary surfactant. The auxiliary surfactant may be selected from amphoteric surfactants, zwitterionic surfactants, nonionic surfactants, and mixtures thereof. The auxiliary surfactant surfactant may be selected from betaines, propionates, sultaines, hydroxysultaines, amphoteric hydroxypropyl sulfonates, alkyl amphoacetates, alkyl amphodiacetates, and combinations thereof. The auxiliary surfactant may include, but is not limited to, lauroamidopropyl betaine, cocamidopropyl betaine, cocoyl betaine, cetyl betaine, lauryl hydroxysultaine, sodium lauroamphoacetate, disodium cocoamphodiacetate, cocamide monoethanolamide, and mixtures thereof.

[0062] The hair care composition may also contain from about 0.25% to about 15%, from about 0.5% to about 15%, from about 1% to about 14%, from about 2% to about 13% by weight of one or more amphoteric co-surfactants, zwitterionic co-surfactants, nonionic co-surfactants, or mixtures thereof.

[0063] Suitable amphoteric or zwitterionic surfactants for use in the hair care compositions herein include those known for use in shampoos or other hair care cleansing. Non-limiting examples of suitable zwitterionic or amphoteric surfactants are described in U.S. Pat. Nos. 5,104,646 and 5,106,609, which are incorporated herein by reference in their entirety.

[0064] Suitable amphoteric co-surfactants for use in the composition include those described as derivatives of aliphatic secondary and tertiary amines, wherein the aliphatic radical may be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms, and one aliphatic substituent contains an anionic group such as a carboxyl, sulfonate, sulfate, phosphate, or phosphonate. Suitable amphoteric surfactants include, but are not limited to, those selected from the group consisting of sodium cocoaminopropionate, sodium cocoaminodipropionate, sodium cocoamphoacetate, sodium cocoamphohydroxypropylsulfonate, sodium cocoamphopropionate, sodium cornamphopropionate, sodium lauraminopropionate, sodium lauroamphoacetate, sodium lauroamphohydroxypropylsulfonate, sodium lauroamphopropionate, sodium cornamphopropionate, sodium lauriminodipropionate, ammonium cocoaminopropionate, ammonium cocoamphodipropionate, ammonium cocoamphoacetate, Ammonium oleoamphodiacetate, ammonium cocoamphohydroxypropyl sulfonate, ammonium cocoamphopropionate, ammonium corn amphopropionate, ammonium laurylaminopropionate, ammonium lauroamphoacetate, ammonium lauroamphodiacetate, ammonium lauroamphohydroxypropyl sulfonate, ammonium lauroamphopropionate, ammonium corn amphopropionate, ammonium laurimidodipropionate, triethanolamine cocoaminopropionate, triethanolamine cocoaminodipropionate, triethanolamine cocoamphoacetate, triethanolamine cocoamphohydroxypropyl sulfonate, triethanolamine cocoampho Triethanolamine Propionate, Triethanolamine Corn Oil Amphoteric Acid, Triethanolamine Lauroyl Ampoule Acetate, Triethanolamine Lauroyl Ampoule Hydroxypropyl Sulfonate, Triethanolamine Lauroyl Ampoule Propionate, Triethanolamine Corn Oil Amphoteric Acid, Triethanolamine Lauriminodipropionate, Cocoamphodipropionic Acid, Disodium Capryloamphodiacetate, Disodium Capryloamphodipropionate, Disodium Capryloamphodiacetate, Disodium Capryloamphodipropionate, Disodium Cocoamphocarboxyethyl Hydroxypropyl Sulfonate, Cocoamphodiol Disodium amphoteric acid, disodium cocoamphodipropionate, disodium dicarboxyethyl cocopropylenediamine, disodium laureth-5 carboxyamphodiacetate, disodium lauriminodipropionate, disodium lauroamphodiacetate, disodium lauroamphodipropionate, disodium oleylamphodipropionate, disodium ppg-2-isodecene-7 carboxyamphodiacetate, laurylaminopropionic acid, lauroamphodipropionic acid, laurylaminopropyl glycine, lauryl diethylenediaminoglycine, and mixtures thereof.

[0065] The composition may include a zwitterionic co-surfactant, wherein the zwitterionic surfactant is a derivative of an aliphatic quaternary ammonium, phosphonium and sulfonium compound, wherein the aliphatic group may be straight chain or branched, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one of the aliphatic substituents contains an anionic group such as carboxyl, sulfonate, sulfate, phosphate or phosphonate. The zwitterionic surfactant may be selected from the group consisting of cocamidoethyl betaine, cocamidopropylamine oxide, cocamidopropyl betaine, cocamidopropyl dimethylaminohydroxypropyl hydrolyzed collagen, cocamidopropyl dimonium hydroxypropyl hydrolyzed collagen, cocamidopropyl hydroxysultaine, cocobetaine amidoamphopropionate, cocobetaine, cocohydroxysultaine, coco / oleamidopropyl betaine, cocosultaine, lauramidopropyl betaine, lauryl betaine, lauryl hydroxysultaine, lauryl sultaine, cetyl betaine, and mixtures thereof.

[0066] Non-limiting examples of betaine surfactants may include cocodimethyl carboxymethyl betaine, oleyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl α-carboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, lauryl di-(2-hydroxyethyl) carboxymethyl betaine, stearyl di-(2-hydroxypropyl) carboxymethyl betaine, oleyl dimethyl γ-carboxypropyl betaine, lauryl di-(2-hydroxypropyl) α-carboxyethyl betaine, and mixtures thereof. Examples of sulfobetaines may include cocodimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl di-(2-hydroxyethyl) sulfopropyl betaine, and mixtures thereof.

[0067] Nonionic surfactants suitable for use in the present invention include those described in McCutcheon's "Detergents and Emulsifiers" North American Edition (1986, Allured Publishing Corp.) and McCutcheon's "Functional Materials" North American Edition (1992). Nonionic surfactants suitable for use in the personal care compositions of the present invention include, but are not limited to, polyoxyethylated alkylphenols, polyoxyethylated alcohols, polyoxyethylated polypropylene glycols, glycerol esters of alkanoic acids, polyglycerol esters of alkanoic acids, propylene glycol esters of alkanoic acids, sorbitol esters of alkanoic acids, polyoxyethylated sorbitol esters of alkanoic acids, polyoxyethylene glycol esters of alkanoic acids, polyoxyethylated alkanoic acids, alkanolamides, N-alkyl pyrrolidones, alkyl glycosides, alkyl polyglucosides, alkyl amine oxides, and polyoxyethylated siloxanes.

[0068] The auxiliary surfactant may be one or more nonionic surfactants selected from the group consisting of alkyl polyglucosides, alkyl glycosides, acyl glucosamides, alkanolamides, alkoxylated amides, glycerides, and mixtures thereof.

[0069] Non-limiting examples of acyl glucamides can include lauroyl / myristoyl methyl glucamide, caprylyl / caproyl methyl glucamide, cocoyl methyl glucamide, and combinations thereof.

[0070] Non-limiting examples of alkanolamides can include cocamide, cocamide methyl MEA, cocamide DEA, cocamide MEA, cocamide MIPA, lauramide DEA, lauramide MEA, lauramide MIPA, myristicamide DEA, myristicamide MEA, PEG-20 cocamide MEA, PEG-2 cocamide, PEG-3 cocamide, PEG-4 cocamide, PEG-5 cocamide, PEG-6 cocamide, PEG-7 cocamide, PEG-3 lauramide, PEG-5 lauramide, PEG-3 oleamide, PPG-2 cocamide, PPG-2 hydroxyethyl cocamide, PPG-2 hydroxyethyl isostearamide, and mixtures thereof.

[0071] Non-limiting examples of alkoxylated amides can include PPG-2 cocamide, PPG-2 hydroxyethyl cocamide, PPG-2 hydroxyethyl isostearamide, and combinations thereof.

[0072] Representative polyoxyethylated alcohols include those having alkyl chains in the C9-C16 range and having from about 1 to about 110 alkoxy groups, including but not limited to laureth-3, laureth-23, ceteth-10, steareth-10, steareth-100, beheneth-10, and those available under the trade name 91. twenty three, 25. 45. 135. 67. PC 100, PC 200, PC 600, those commercially available from Shell Chemicals (Houston, Texas), and mixtures thereof.

[0073] Also commercially available is Polyoxyethylene fatty esters are commercially available from Uniqema (Wilmington, Delaware) under the trade names HYDROGEN(R) and include, but are not limited to: 30. 35. 52. 56. 58. 72. 76. 78. 93. 97. 98. 721, and mixtures thereof.

[0074] Suitable alkyl glycosides and alkyl polyglucosides can be represented by the formula (S)nOR, wherein S is a sugar moiety such as glucose, fructose, mannose, galactose, etc.; n is an integer from about 1 to about 1000, and R is a C8-C30 alkyl group. Examples of long chain alcohols from which the alkyl group can be derived include decyl alcohol, lauryl alcohol, tetradecanol, cetyl alcohol, stearyl alcohol, oleyl alcohol, and the like. Examples of these surfactants include alkyl polyglucosides, wherein S is a glucose moiety, R is a C8-20 alkyl group, and n is an integer from about 1 to about 9. Non-limiting examples of alkyl polyglucosides can include decyl glucoside, coconut oil glucoside, lauryl glucoside, and combinations thereof. Commercially available examples of these surfactants include those sold under the trade names 325 CS, 600 CS and Decyl polyglucoside and lauryl polyglucoside are available from Cognis (Ambler, Pa.) as 625 CS. Also useful herein are sucrose ester surfactants such as sucrose cocoate, and sucrose laurate, and those sold under the trade name Triton TM BG-10 and Triton TM CG-110 is an alkyl polyglucoside available from The Dow Chemical Company (Houston, Tx).

[0075] Other nonionic surfactants suitable for the present invention are glyceryl esters and polyglyceryl esters, including but not limited to glyceryl monoesters, glyceryl monoesters of C12-22 saturated, unsaturated and branched fatty acids such as oleic acid glyceryl, monostearic acid glyceryl, monopalmitic acid glyceryl, monobehenic acid glyceryl and mixtures thereof, and polyglyceryl esters of C12-22 saturated, unsaturated and branched fatty acids such as polyglyceryl-4 isostearate, polyglyceryl-3 oleate, polyglyceryl-2-sesquioleate, diisostearate triglyceride, monooleic acid diglyceride, monooleic acid tetraglyceride and mixtures thereof. Non-limiting examples of glyceryl esters can include caprylic acid glyceryl, capric acid glyceryl, coconut oil glyceryl, lauric acid glyceryl and combinations thereof.

[0076] Also useful as nonionic surfactants herein are sorbitan esters. Sorbitan esters of C12-22 saturated, unsaturated and branched fatty acids can be used herein. These sorbitan esters generally include mixtures of monoesters, diesters, triesters, and the like. Representative examples of suitable sorbitan esters include sorbitan monolaurate ( 20) Sorbitan monopalmitate ( 40) Sorbitan monostearate ( 60), Sorbitan tristearate ( 65), Sorbitan monooleate ( 80), Sorbitan trioleate ( 85), and sorbitan isostearate.

[0077] Also suitable for use herein are alkoxylated derivatives of sorbitan esters, including but not limited to polyoxyethylene (20) sorbitan monolaurate ( 20), polyoxyethylene (20) sorbitan monopalmitate ( 40), polyoxyethylene (20) sorbitan monostearate ( 60), polyoxyethylene (20) sorbitan monooleate ( 80), Polyoxyethylene (4) sorbitan monolaurate ( 21) Polyoxyethylene (4) sorbitan monostearate ( 61), Polyoxyethylene (5) sorbitan monooleate ( 81), and mixtures thereof.

[0078] Also suitable for use herein are alkylphenol ethoxylates, including but not limited to nonylphenol ethoxylates (available as Tergitol TM NP-4, NP-6, NP-7, NP-8, NP-9, NP-10, NP-11, NP-12, NP-13, NP-15, NP-30, NP-40, NP-50, NP-55, NP-70) and octylphenol ethoxylate (Triton purchased from The Dow Chemical Company (Houston, TX) TM X-15, X-35, X-45, X-114, X-100, X-102, X-165, X-305, X-405,

[0079] Also suitable for use herein are tertiary alkyl amine oxides including lauryl amine oxide and cocoamine oxide.

[0080] Non-limiting examples of other anionic, zwitterionic, amphoteric and nonionic additional surfactants suitable for use in the hair care compositions are described in McCutcheon's Emulsifiers and Detergents, 1989 Annual, published by MC Publishing Co., and in U.S. Pat. Nos. 3,929,678; 2,658,072; 2,438,091; 2,528,378, the entireties of which are incorporated herein by reference.

[0081] Suitable surfactant combinations include an average weight percent of alkyl branching of from about 0.5% to about 30%, or from about 1% to about 25%, or from about 2% to about 20%. The surfactant combination may have a cumulative average weight percent of C8 to C12 alkyl chain lengths of from about 7.5% to about 25%, or from about 10% to about 22.5%, or from about 10% to about 20%. The surfactant combination may have an average C8-C12 / C13-C18 alkyl chain ratio of from about 3 to about 200, or from about 25 to about 175.5, or from about 50 to about 150, or from about 75 to about 125.

[0082] Cationic polymers

[0083] The hair care composition further comprises a cationic polymer. These cationic polymers may include at least one of the following: (a) a cationic guar polymer, (b) a cationic non-guar galactomannan polymer, (c) a cationic tapioca polymer, (d) a cationic copolymer of an acrylamide monomer and a cationic monomer, and / or (e) a synthetic non-crosslinked cationic polymer that may or may not form a lyotropic liquid crystal after being combined with a detersive surfactant, (f) a cationic cellulose polymer. In addition, the cationic polymer may be a mixture of cationic polymers.

[0084] The hair care compositions may comprise cationic guar polymers which are cationically substituted galactomannan (guar) gum derivatives. The guar gum used to prepare these guar gum derivatives is generally obtained in the form of naturally occurring material from the seeds of the guar gum plant. The guar gum molecule itself is a linear mannan branched at regular intervals with monogalactose units on alternating mannose units. The mannose units are linked to each other via β (1-4) glycosidic linkages. Galactose branching occurs via α (1-6) bonds. Cationic derivatives of guar gum are obtained by reaction between the hydroxyl groups of the polygalactomannan with a reactive quaternary ammonium compound. The degree of substitution of the cationic groups onto the guar gum structure should be sufficient to provide the desired cationic charge density as described above.

[0085] In the present invention, cationic polymers may include, but are not limited to, cationic guar gum polymers having a weight average molecular weight of less than 2,200,000 g / mol, or about 150,000 to about 2,200,000 g / mol, or about 200,000 to about 2,200,000 g / mol, or about 250,000 to about 2,500,000 g / mol, or about 300,000 to about 1,200,000 g / mol, or about 700,000,000 to about 1,000,000 g / mol. In addition, the cationic guar gum polymer may have a charge density of about 0.2 meq / g to about 2.2 meq / g, or about 0.3 meq / g to about 2.0 meq / g, or about 0.4 meq / g to about 1.8 meq / g; or about 0.5 meq / g to about 1.8 meq / g.

[0086] The cationic guar polymer may have a weight average molecular weight of less than about 1,500,000 g / mol and a charge density of about 0.1 meq / g to about 2.5 meq / g. The cationic guar polymer can have a weight average molecular weight of less than 900,000 g / mol, or from about 150,000 g / mol to about 800,000 g / mol, or from about 200,000 g / mol to about 700,000 g / mol, or from about 300,000 g / mol to about 700,000 g / mol, or from about 400,000 g / mol to about 600,000 g / mol, from about 150,000 g / mol to about 800,000 g / mol, or from about 200,000 g / mol to about 700,000 g / mol, or from about 300,000 g / mol to about 700,000 g / mol, or from about 400,000 g / mol to about 600,000 g / mol. The cationic guar polymer may have a charge density of about 0.2 meq / g to about 2.2 meq / g, or about 0.3 meq / g to about 2.0 meq / g, or about 0.4 meq / g to about 1.8 meq / g; or about 0.5 meq / g to about 1.5 meq / g.

[0087] Cationic guar gum polymers can be formed from quaternary ammonium compounds. The quaternary ammonium compounds used to form cationic guar gum polymers can conform to Formula 1:

[0088]

[0089] Where R 3 , R 4 and R 5 is a methyl or ethyl group; R 6 is an alkylene oxide group having the general formula 2:

[0090]

[0091] or R 6 is a halohydrin group having the general formula 3:

[0092]

[0093] Where R 7 is a C1 to C3 alkylene group; X is chlorine or bromine, and Z is an anion such as Cl-, Br-, I- or HSO4-.

[0094] Cationic guar gum polymers may conform to the general formula 4:

[0095]

[0096] Where R 8 is guar gum; and wherein R 4 , R 5 , R 6 and R 7 As defined above; and wherein Z is halogen. The cationic guar polymer may conform to Formula 5:

[0097]

[0098] Suitable cationic guar gum polymers include cationic guar gum derivatives such as guar hydroxypropyltrimonium chloride. The cationic guar gum polymer may be guar hydroxypropyltrimonium chloride. Specific examples of guar hydroxypropyltrimonium chloride include those commercially available from Solvay series, such as those commercially available from Solvay C-500. C-500 has a charge density of 0.8 meq / g and a molecular weight of 500,000 g / mol. Other suitable guar hydroxypropyltrimonium chlorides are: having a charge density of about 1.3 meq / g and a molecular weight of about 500,000 g / mol and sold under the trade name Optima is available from Solvay as guar hydroxypropyltrimonium chloride. Other suitable guar hydroxypropyltrimonium chlorides are: having a charge density of about 0.7 meq / g and a molecular weight of about 1,500,000 g / mol and sold under the trade name Guar hydroxypropyltrimonium chloride is available from Solvay at Excel. Other suitable guar hydroxypropyltrimonium chlorides are: guar hydroxypropyltrimonium chloride having a charge density of about 1.1 meq / g and a molecular weight of about 500,000 g / mol and available from ASI, guar hydroxypropyltrimonium chloride having a charge density of about 1.5 meq / g and a molecular weight of about 500,000 g / mol and available from ASI. Other suitable guar hydroxypropyltrimonium chlorides are: Hi-Care 1000, which has a charge density of about 0.7 meq / g and a molecular weight of about 600,000 g / mol, and is available from Solvay; N-Hance 3269 and N-Hance 3270, which have a charge density of about 0.7 meq / g and a molecular weight of about 425,000 g / mol, and are available from ASI; N-Hance 3196, which has a charge density of about 0.8 meq / g and a molecular weight of about 1,100,000 g / mol, and is available from ASI. AquaCat CG518 has a charge density of about 0.9 meq / g and a molecular weight of about 50,000 g / mol, and is available from ASI. BF-13, a borate (boron) free guar gum having a charge density of about 1.1 meq / g and a molecular weight of about 800,000, and BF-17, a borate (boron) free guar gum having a charge density of about 1.5 meq / g and a M.Wt. of about 800,000, were both purchased from ASI.

[0099] The hair care composition of the present invention may comprise a galactomannan polymer derivative having a mannose to galactose ratio of greater than 2:1 on a monomer to monomer basis, the galactomannan polymer derivative being selected from the group consisting of a cationic galactomannan polymer derivative and an amphoteric galactomannan polymer derivative having a net positive charge. As used herein, the term "cationic galactomannan" refers to a galactomannan polymer to which a cationic group has been added. The term "amphoteric galactomannan" refers to a galactomannan polymer to which a cationic group and an anionic group have been added so that the polymer has a net positive charge.

[0100] Galactomannan polymers are present in the endosperm of leguminous seeds. Galactomannan polymers are composed of a combination of mannose monomers and galactose monomers. Galactomannan molecules are linear mannans branched with single-segment galactose units on specific mannose units at regular intervals. The mannose units are linked to each other via β (1-4) glycosidic linkages. Galactose branching occurs via α (1-6) bonds. The ratio of mannose monomers to galactose monomers varies depending on the variety of the plant and is also affected by climate. On a monomer-to-monomer basis, the non-guar galactomannan polymer derivatives of the present invention have a mannose to galactose ratio greater than 2:1. Suitable mannose to galactose ratios may be greater than about 3:1, and mannose to galactose ratios may be greater than about 4:1. Analysis of mannose to galactose ratios is well known in the art and is typically based on measurements of galactose content.

[0101] The gums used to prepare the non-guar galactomannan polymer derivatives are generally obtained in the form of naturally occurring materials, such as seeds or bean-shaped fruits from plants. Examples of various non-guar galactomannan polymers include, but are not limited to, tara gum (3 parts mannose / 1 part galactose), locust bean gum or carob gum (4 parts mannose / 1 part galactose), and cassia gum (5 parts mannose / 1 part galactose).

[0102] The non-guar galactomannan polymer derivatives may have an M.Wt. of about 1,000 to about 10,000,000, and / or about 5,000 to about 3,000,000.

[0103] The hair care compositions of the present invention may also include a galactomannan polymer derivative having a cationic charge density of from about 0.5 meq / g to about 7 meq / g. The galactomannan polymer derivative may have a cationic charge density of from about 1 meq / g to about 5 meq / g. The degree of substitution of the cationic groups on the galactomannan structure should be sufficient to provide the desired cationic charge density.

[0104] The galactomannan polymer derivative may be a cationic derivative of a non-guar galactomannan polymer obtained by reaction between the hydroxyl groups of the polygalactomannan polymer and a reactive quaternary ammonium compound. Suitable quaternary ammonium compounds for forming cationic galactomannan polymer derivatives include those conforming to Formulas 1 to 5 as defined above.

[0105] The cationic non-guar galactomannan polymer derivative formed by the above reagents is represented by Formula 6:

[0106]

[0107] Wherein R is gum. The cationic galactomannan derivative may be gum hydroxypropyltrimethylammonium chloride, which may be more specifically represented by general formula 7:

[0108]

[0109] Alternatively, the galactomannan polymer derivative may be an amphoteric galactomannan polymer derivative having a net positive charge, when the cationic galactomannan polymer derivative further comprises an anionic group, an amphoteric galactomannan polymer derivative is obtained.

[0110] The cationic non-guar galactomannans may have a mannose to galactose ratio of greater than about 4:1, a molecular weight of about 1,000 g / mol to about 10,000,000 g / mol, and / or about 50,000 g / mol to about 1,000,000 g / mol, and / or about 100,000 g / mol to about 900,000 g / mol, and / or about 150,000 g / mol to about 400,000 g / mol, and a cationic charge density of about 1 meq / g to about 5 meq / g, and / or 2 meq / g to about 4 meq / g, and may be derived from the cinnamon plant.

[0111] The hair care composition may include a water-soluble cationically modified starch polymer. As used herein, the term "cationically modified starch" refers to a starch to which cationic groups are added before the starch is degraded to have a smaller molecular weight, or to which cationic groups are added after the starch is modified to obtain a desired molecular weight. The definition of the term "cationically modified starch" also includes amphoteric modified starches. The term "amphoteric modified starch" refers to a starch hydrolyzate to which cationic groups and anionic groups are added.

[0112] The cationically modified starch polymers disclosed herein have a bound nitrogen percentage of about 0.5% to about 4%.

[0113] Cationic modified starch polymers for use in the hair care compositions can have a molecular weight of from about 850,000 g / mol to about 1,500,000 g / mol and / or from about 900,000 g / mol to about 1,500,000 g / mol.

[0114] The hair care composition may include a cationic modified starch polymer having a charge density of from about 0.2 meq / g to about 5 meq / g, and / or from about 0.2 meq / g to about 2 meq / g. Chemical modifications to obtain such charge density include, but are not limited to, the addition of amino and / or ammonium groups to the starch molecule. Non-limiting examples of these ammonium groups may include substituents such as hydroxypropyltrimethylammonium chloride, trimethylhydroxypropylammonium chloride, dimethylstearylhydroxypropylammonium chloride, and dimethyldodecylhydroxypropylammonium chloride. See Solarek, DB, Cationic Starches in Modified Starches: Properties and Uses (Wurzburg, OB, ed., CRC Press, Inc., Boca Raton, Fla. 1986, pp. 113-125). The cationic groups may be added to the starch before it is degraded to have a smaller molecular weight, or the cationic groups may be added thereto after such modification.

[0115] The cationically modified starch polymers typically have a degree of substitution of cationic groups of from about 0.2 to about 2.5. As used herein, the "degree of substitution" of a cationically modified starch polymer is an average measure of the number of hydroxyl groups on each anhydroglucose unit derived from a substituent. Since each anhydroglucose unit has three hydroxyl groups that can be substituted, the maximum possible degree of substitution is 3. On a molar average, the degree of substitution is expressed as the number of moles of substituents per mole of anhydroglucose unit. The degree of substitution can be determined using proton nuclear magnetic resonance spectroscopy (".sup.1H NMR") methods well known in the art. Suitable .sup.1H NMR techniques include those described in "Observation on NMR Spectra of Starches in Dimethyl Sulfoxide, Iodine-Complexing, and Solvating in Water-Dimethyl Sulfoxide", Qin-Ji Peng and Arthur S. Perlin, Carbohydrate Research, 160 (1987), 57-72; and "An Approach to the Structural Analysis of Oligosaccharides by NMR Spectroscopy", J. Howard Bradbury and J. Grant Collins, Carbohydrate Research, 71, (1979), 15-25.

[0116] The source of starch before chemical modification can be selected from a variety of sources, such as tubers, beans, cereals and grains. Non-limiting examples of starch from such sources can include corn starch, wheat starch, rice starch, waxy corn starch, oat starch, cassava starch, waxy barley starch, waxy rice starch, gluten rice starch, gluten rice starch, amylopectin, potato starch, tapioca starch, oat starch, sago starch, gluten, or mixtures thereof.

[0117] The cationically modified starch polymer may be selected from degraded cationic corn starch, cationic tapioca, cationic potato starch, and mixtures thereof. Alternatively, the cationically modified starch polymer is cationic corn starch and cationic tapioca.

[0118] Before degradation to have a smaller molecular weight or after modification to have a smaller molecular weight, the starch may include one or more additional modifications. For example, these modifications may include cross-linking, stabilization reactions, phosphorylation and hydrolysis. Stability reactions may include alkylation and esterification.

[0119] The cationic modified starch polymer can be incorporated into the composition in the form of hydrolyzed starch (e.g., acid, enzyme or alkaline degradation), oxidized starch (e.g., peroxide, peracid, hypochlorite, alkali or any other oxidizing agent), physically / mechanically degraded starch (e.g., via thermomechanical energy input to processing equipment), or a combination thereof.

[0120] The best form of starch is one that dissolves readily in water and forms a substantially clear (about 80 percent transmittance at 600 nm) solution in water. The transparency of the composition is determined by ultraviolet / visible (UV / VIS) spectrophotometry using a Gretag Macbeth Colorimeter Color i 5 according to the relevant instructions to measure the absorption or transmission of UV / VIS light by the sample. It has been shown that a wavelength of light of 600 nm is sufficient to characterize the transparency of a cosmetic composition.

[0121] Suitable cationically modified starches for use in hair care compositions are available from known starch suppliers. Also suitable for use in hair care compositions are nonionically modified starches which can be further derivatized to form cationically modified starches as known in the art. Other suitable modified starch materials can be quaternized to produce cationically modified starch polymers suitable for use in hair care compositions as known in the art.

[0122] Starch degradation process: A starch slurry can be prepared by mixing granular starch in water. The temperature is raised to about 35°C. An aqueous potassium permanganate solution of about 50 ppm concentration based on starch is then added. The pH is raised to about 11.5 with sodium hydroxide, and the slurry is stirred thoroughly to prevent starch sedimentation. A solution of about 30% hydrogen peroxide diluted in water is then added to a level of about 1% peroxide based on starch. The pH is then restored to about 11.5 by adding additional sodium hydroxide. The reaction is completed over a period of about 1 to about 20 hours. The mixture is then neutralized with dilute hydrochloric acid. The degraded starch is recovered by filtration followed by washing and drying.

[0123] The hair care composition may comprise a cationic copolymer of an acrylamide monomer and a cationic monomer, wherein the copolymer has a charge density of from about 1.0 meq / g to about 3.0 meq / g. The cationic copolymer may be a synthetic cationic copolymer of an acrylamide monomer and a cationic monomer.

[0124] Cationic copolymers may contain:

[0125] (i) an acrylamide monomer having the following formula AM:

[0126]

[0127] Where R 9 H or C 1-4 alkyl; and R 10 and R 11 Independently selected from H, C 1-4 Alkyl, CH2OCH3, CH2OCH2CH(CH3)2 and phenyl, or together with C 3-6 Cycloalkyl; and

[0128] (ii) a cationic monomer conforming to formula CM:

[0129]

[0130] wherein k=1, each of v, v' and v" is independently an integer from 1 to 6, w is zero or an integer from 1 to 10, and X - It is an anion.

[0131] The cationic monomer may conform to the formula CM, and wherein k=1, v=3, and w=0, z=1, and X - Cl - , to form the following structure:

[0132]

[0133] The above structure may be referred to as a diquaternary ammonium salt. Alternatively, the cationic monomer may conform to the formula CM, and wherein v and v" are each 3, v' = 1, w = 1, y = 1, and X - Cl - , such as:

[0134]

[0135] The above structure can be called a triquaternary ammonium salt.

[0136] Suitable acrylamide monomers include, but are not limited to, acrylamide or methacrylamide.

[0137] The cationic copolymer (b) may be AM:TRIQUAT, which is a copolymer of acrylamide and N-[2-[[[dimethyl[3-[(2-methyl-1-oxo-2-propenyl)amino]propyl]ammonio]acetyl]amino]ethyl]2-hydroxy-N,N,N',N',N'-pentamethyl-1,3-propanediammonium trichloride. AM:TRIQUAT is also known as polyquaternium 76 (PQ76). AM:TRIQUAT may have a charge density of 1.6 meq / g and a molecular weight of 1,100,000 g / mol.

[0138] In addition, the cationic copolymer may have an acrylamide monomer and a cationic monomer, wherein the cationic monomer is selected from: dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, di-tert-butylaminoethyl (meth)acrylate, dimethylaminomethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide; ethyleneimine, vinylamine, 2-vinylpyridine, 4-vinylpyridine; trimethylammonium ethyl chloride (meth)acrylate, trimethylammonium ethyl methylsulfate (meth)acrylate, dimethylbenzylammonium ethyl chloride (meth)acrylate, 4-benzoylbenzyldimethylammonium ethyl chloride acrylate, trimethylammonium chloride ethyl (meth)acrylamide, trimethylammonium chloride propyl (meth)acrylamide, vinylbenzyltrimethylammonium chloride, diallyldimethylammonium chloride, and mixtures thereof.

[0139] The cationic copolymer may contain a cationic monomer selected from the group consisting of: cationic monomers including trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl methyl (meth)acrylate sulfate, dimethylbenzylammonium ethyl (meth)acrylate chloride, 4-benzoylbenzyldimethylammonium ethyl chloride acrylate, trimethylammonium chloride ethyl (meth)acrylamide, trimethylammonium chloride propyl (meth)acrylamide, vinylbenzyltrimethylammonium chloride, and mixtures thereof.

[0140] The cationic copolymer may be water soluble. The cationic copolymer is formed from (1) a copolymer of (meth)acrylamide and a cationic monomer based on (meth)acrylamide and / or a hydrolytically stable cationic monomer, (2) a terpolymer of (meth)acrylamide, a cationic (meth)acrylate-based monomer, and a (meth)acrylamide-based monomer, and / or a hydrolytically stable cationic monomer. The cationic (meth)acrylate-based monomer may be a cationized ester of (meth)acrylic acid containing a quaternized N atom. The cationized ester of (meth)acrylic acid containing a quaternized N atom may be a quaternized dialkylaminoalkyl (meth)acrylate having C1 to C3 in the alkyl and alkylene groups. Suitable cationized esters of (meth)acrylic acid containing quaternized N atoms may be selected from: ammonium salts of dimethylaminomethyl (meth)acrylate quaternized with methyl chloride, ammonium salts of dimethylaminoethyl (meth)acrylate, ammonium salts of dimethylaminopropyl (meth)acrylate, ammonium salts of diethylaminomethyl (meth)acrylate, ammonium salts of diethylaminoethyl (meth)acrylate; and ammonium salts of diethylaminopropyl (meth)acrylate. The cationized ester of (meth)acrylic acid containing quaternized N atoms may be dimethylaminoethyl acrylate (ADAME-Quat) quaternized with alkyl halides, or with methyl chloride, or benzyl chloride, or dimethyl sulfate. When based on (meth)acrylamide, the cationic monomer may be a quaternized dialkylaminoalkyl (meth)acrylamide having C1 to C3 in the alkyl and alkylene groups, or dimethylaminopropyl acrylamide quaternized with alkyl halides, or methyl chloride, or benzyl chloride, or dimethyl sulfate.

[0141] Suitable cationic (meth)acrylamide-based monomers include quaternized dialkylaminoalkyl (meth)acrylamides having C1 to C3 in the alkyl and alkylene groups. The cationic (meth)acrylamide-based monomer may be dimethylaminopropylacrylamide, quaternized with an alkyl halide (especially methyl chloride) or benzyl chloride or dimethyl sulfate.

[0142] The cationic monomer may be a hydrolytically stable cationic monomer. In addition to dialkylaminoalkyl (meth) acrylamide, the hydrolytically stable cationic monomer may also be all monomers that can be considered stable by the OECD hydrolysis test. The cationic monomer may be hydrolytically stable, and the hydrolytically stable cationic monomer may be selected from: diallyldimethylammonium chloride and water-soluble cationic styrene derivatives.

[0143] The cationic copolymer may be a terpolymer of acrylamide, 2-dimethylammoniumethyl (meth)acrylate quaternized with methyl chloride (ADAME-Q), and 3-dimethylammoniumpropyl (meth)acrylamide (DIMAPA-Q) quaternized with methyl chloride. The cationic copolymer may be formed from acrylamide and acrylamidopropyltrimethylammonium chloride, wherein the acrylamidopropyltrimethylammonium chloride has a charge density of about 1.0 meq / g to about 3.0 meq / g.

[0144] The cationic copolymer may have a charge density of about 1.1 meq / g to about 2.5 meq / g, or about 1.1 meq / g to about 2.3 meq / g, or about 1.2 meq / g to about 2.2 meq / g, or about 1.2 meq / g to about 2.1 meq / g, or about 1.3 meq / g to about 2.0 meq / g, or about 1.3 meq / g to about 1.9 meq / g.

[0145] The cationic copolymer can have a molecular weight of about 100,000 g / mol to about 1,500,000 g / mol, or about 300,000 g / mol to about 1,500,000 g / mol, or about 500,000 g / mol to about 1,500,000 g / mol, or about 700,000 g / mol to about 1,000,000 g / mol, or about 900,000 g / mol to about 1,200,000 g / mol.

[0146] The cationic copolymer may be trimethylammoniumpropylmethacrylamide chloride-N-acrylamide copolymer, also referred to as AM:MAPTAC. AM:MAPTAC may have a charge density of about 1.3 meq / g and a molecular weight of about 1,100,000 g / mol. The cationic copolymer may be AM:ATPAC. AM:ATPAC may have a charge density of about 1.8 meq / g and a molecular weight of about 1,100,000 g / mol.

[0147] (a) Cationic synthetic polymers

[0148] The hair care composition may comprise a cationic synthetic polymer which may be formed from

[0149] i) one or more cationic monomer units, and optionally

[0150] ii) one or more negatively charged monomer units, and / or

[0151] iii) nonionic monomers,

[0152] The subsequent charge of the copolymer is positive. The ratios of the three types of monomers are given as "m", "p" and "q", where "m" is the number of cationic monomers, "p" is the number of monomers with a negative charge, and "q" is the number of nonionic monomers.

[0153] The cationic polymer may be a water-soluble or water-dispersible non-crosslinked and synthetic cationic polymer having the following structure:

[0154]

[0155] Wherein A can be one or more of the following cationic moieties:

[0156]

[0157] Wherein @ = amide, alkylamide, ester, ether, alkyl, or alkylaryl;

[0158] Wherein Y = C1-C22 alkyl, alkoxy, alkylidene, alkyl, or aryloxy;

[0159] Wherein ψ=C1-C22 alkyl, alkoxy, alkylaryl, or alkylaryloxy;.

[0160] Wherein Z=C1-C22 alkyl, alkoxy, aryl, or aryloxy;

[0161] Wherein R1=H, C1-C4 straight chain or branched alkyl;

[0162] Where s = 0 or 1, n = 0 or ≥ 1;

[0163] wherein T and R7 = C1-C22 alkyl; and

[0164] wherein X-=halogen, hydroxide, alkanolate, sulfate or alkylsulfate.

[0165] The negatively charged monomer is defined as follows: R2'=H, C1-C4 straight or branched chain alkyl, and R3 is:

[0166]

[0167] Where D=O, N, or S;

[0168] Where Q = NH2 or O;

[0169] Where u = 1 to 6;

[0170] wherein t = 0 to 1; and

[0171] Wherein J = an oxidized functional group containing the following elements P, S, C.

[0172] The nonionic monomer is defined as follows: R2" = H, C1-C4 straight or branched alkyl, R6 = straight or branched alkyl, alkylaryl, aryloxy, alkoxy, alkylaryloxy, and β is defined as

[0173] and wherein G′ and G″ are independently O, S or NH, and L=0 or 1.

[0174] Examples of cationic monomers include aminoalkyl (meth)acrylates, (meth)aminoalkyl (meth)acrylamides; monomers containing at least one secondary, tertiary or quaternary ammonium functional group, or a heterocyclic group containing a nitrogen atom, vinylamine or ethyleneimine; diallyldialkylammonium salts; mixtures thereof, their salts and macromonomers derived therefrom.

[0175] Additional examples of cationic monomers include dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, di-tert-butylaminoethyl (meth)acrylate, dimethylaminomethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide, ethyleneimine, vinylamine, 2-vinylpyridine, 4-vinylpyridine, trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methylsulfate, dimethylbenzylammonium ethyl (meth)acrylate chloride, 4-benzoylbenzyldimethylammonium ethyl chloride acrylate, trimethylammonium chloride ethyl (meth)acrylamide, trimethylammonium chloride propyl (meth)acrylamide, vinylbenzyltrimethylammonium chloride, and diallyldimethylammonium chloride.

[0176] Suitable cationic monomers include those comprising the formula -NR3 + Those of quaternary ammonium groups, wherein R is the same or different, represents a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, or a benzyl group, optionally with a hydroxyl group, and includes an anion (counter ion). Examples of anions are halides (such as chloride, bromide), sulfate, hydrogen sulfate, alkyl sulfate (e.g., containing 1 to 6 carbon atoms), phosphate, citrate, formate and acetate.

[0177] Suitable cationic monomers include trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methylsulfate, dimethylbenzylammonium ethyl (meth)acrylate chloride, 4-benzoylbenzyldimethylammonium ethyl chloride acrylate, trimethylammonium chloride ethyl (meth)acrylamide, trimethylammonium chloride propyl (meth)acrylamide, vinylbenzyltrimethylammonium chloride.

[0178] Additional suitable cationic monomers include trimethylammonium chloride propyl (meth)acrylamide.

[0179] Examples of monomers having a negative charge include α-ethylenically unsaturated monomers containing a phosphate or phosphonate group, α-ethylenically unsaturated monocarboxylic acids, monoalkyl esters of α-ethylenically unsaturated dicarboxylic acids, monoalkyl amides of α-ethylenically unsaturated dicarboxylic acids, α-ethylenically unsaturated compounds containing a sulfonic acid group, and salts of α-ethylenically unsaturated compounds containing a sulfonic acid group.

[0180] Suitable monomers having a negative charge include acrylic acid, methacrylic acid, vinyl sulfonic acid, salts of vinyl sulfonic acid, vinylbenzenesulfonic acid, salts of vinylbenzenesulfonic acid, α-acrylamidomethylpropanesulfonic acid, salts of α-acrylamidomethylpropanesulfonic acid, 2-sulfoethyl methacrylate, salts of 2-sulfoethyl methacrylate, acrylamido-2-methylpropanesulfonic acid (AMPS), salts of acrylamido-2-methylpropanesulfonic acid, and styrene sulfonate (SS).

[0181] Examples of nonionic monomers include vinyl acetate, amides of α-ethylenically unsaturated carboxylic acids, esters of α-ethylenically unsaturated monocarboxylic acids with hydrogenated or fluorinated alcohols, polyethylene oxide (meth)acrylates (i.e., polyethoxylated (meth)acrylic acids), monoalkyl esters of α-ethylenically unsaturated dicarboxylic acids, monoalkyl amides of α-ethylenically unsaturated dicarboxylic acids, vinyl nitriles, vinylamine amides, vinyl alcohol, vinyl pyrrolidone, and vinyl aromatic compounds.

[0182] Suitable nonionic monomers include styrene, acrylamide, methacrylamide, acrylonitrile, methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, n-butyl methacrylate, 2-ethyl-hexyl acrylate, 2-ethyl-hexyl methacrylate, 2-hydroxyethyl acrylate and 2-hydroxyethyl methacrylate.

[0183] The anionic counterion (X-) associated with the synthetic cationic polymer can be any known counterion, so long as the polymer remains soluble or dispersible in water, in the hair care composition, or in a coacervate phase in the hair care composition, and so long as the counterion is physically and chemically compatible with the essential components of the hair care composition, or does not otherwise unduly impair product performance, stability, or aesthetics. Non-limiting examples of such counterions include halides (e.g., chloride, fluoride, bromide, iodide), sulfate, and methylsulfate.

[0184] The cationic polymers described herein can help provide a replacement hydrophobic F-layer to damaged hair, especially chemically treated hair. The extremely thin F-layer helps seal in moisture and prevent further damage while providing natural weather resistance. Chemical treatments damage the hair cuticle and strip its protective F-layer. As the F-layer is stripped, the hair becomes increasingly hydrophilic. It has been found that when lyotropic liquid crystals are applied to chemically treated hair, the hair becomes more hydrophobic and more natural in both appearance and feel. Without being bound by any theory, it is believed that the lyotropic liquid crystal complex forms a hydrophobic layer or film that covers the hair fiber and protects the hair, just as the natural F-layer protects the hair. The hydrophobic layer restores the hair to a generally untreated, healthier state. The lyotropic liquid crystals are formed by mixing the synthetic cationic polymers described herein with the anionic detersive surfactant component of the aforementioned hair care composition. The synthetic cationic polymers have a relatively high charge density. It should be noted that some synthetic polymers with relatively high cationic charge density do not form lyotropic liquid crystals, which is mainly due to their abnormal linear charge density. Such synthetic cationic polymers are described in WO 94 / 06403 to Reich et al. The synthetic polymers described herein can be formulated into stable hair care compositions that provide improved conditioning properties for damaged hair.

[0185] The cationic synthetic polymer that can form lyotropic liquid crystals can have a cationic charge density of about 2 meq / gm to about 7 meq / gm, and / or about 3 meq / gm to about 7 meq / gm, and / or about 4 meq / gm to about 7 meq / gm. The cationic charge density can be about 6.2 meq / gm. The polymer also has an M.Wt. of about 1,000 to about 5,000,000, and / or about 10,000 to about 1,500,000, and / or about 100,000 to about 1,500,000.

[0186] Cationic synthetic polymers that provide enhanced conditioning and benefit agent deposition without forming lyotropic liquid crystals may have a cationic charge density of from about 0.7 meq / gm to about 7 meq / gm, and / or from about 0.8 meq / gm to about 5 meq / gm, and / or from about 1.0 meq / gm to about 3 meq / gm. The polymers also have an M.Wt. of from about 1,000 to about 1,500,000, from about 10,000 to about 1,500,000, and from about 100,000 to about 1,500,000.

[0187] Suitable cationic cellulose polymers are salts of hydroxyethylcellulose reacted with trimethylammonium substituted epoxides, known in the industry (CTFA) as polyquaternium 10, and available from Dow / Amerchol Corp. (Edison, NJ, USA) as their Polymer LR, JR and KG polymer series. Non-limiting examples include: JR-400, JR-125, JR-30M, KG-30M, JP, LR-400, and mixtures thereof. Other suitable types of cationic cellulose include polymeric quaternary ammonium salts of hydroxyethylcellulose reacted with lauryl dimethyl ammonium substituted epoxides, known in the industry (CTFA) as polyquaternium 24. These materials are available from Dow / Amerchol Corp. under the trade name Polymer LM-200. Other suitable types of cationic cellulose include polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium substituted epoxides and trimethyl ammonium substituted epoxides, known in the industry (CTFA) as Polyquaternium 67. These materials are available from Dow / Amerchol Corp. under the trade names SoftCAT Polymer SL-5, SoftCAT Polymer SL-30, Polymer SL-60, Polymer SL-100, Polymer SK-L, Polymer SK-M, Polymer SK-MH, and Polymer SK-H.

[0188] Suitable cationic cellulose polymers can have a cationic charge density of about 0.5 meq / gm to about 2.5 meq / gm, and / or about 0.6 meq / gm to about 2.2 meq / gm, and / or about 0.6 meq / gm to about 2.0 meq / gm. In addition, the cationic charge density can be about 1.9 meq / gm. The polymer also has an M.Wt. of about 200,000 to about 3,000,000, and / or about 300,000 to about 2,200,000, and / or about 1,000,000 to about 2,200,000, and / or about 300,000 to about 1,500,000. Cationic cellulose polymers can have a cationic charge density of about 1.7 to about 2.1 meq / gm and a molecular weight of about 1,000,000 to about 2,000,000.

[0189] Concentrations of the cationic polymer range from about 0.01% to about 5%, from about 0.08% to about 3%, from about 0.1% to about 2.5%, and / or from about 0.2% to about 2% by weight of the hair care composition.

[0190] Thickening polymer

[0191] The hair care composition may include a thickening polymer to increase the viscosity of the composition. Suitable thickening polymers may be used. The hair care composition may include from about 0.01% to about 5%, from about 0.08% to about 3.5%, from about 0.1% to about 3%, from about 0.25% to about 3% of a thickening polymer. The thickening polymer modifier may be a polyacrylate, polyacrylamide thickener. The thickening polymer may be an anionic thickening polymer.

[0192] The hair care composition may comprise a thickening polymer based on homopolymers of acrylic acid, methacrylic acid or other related derivatives, non-limiting examples of which include polyacrylates, polymethacrylates, polyethylacrylates and polyacrylamides.

[0193] The thickening polymer may be an alkali-swellable and hydrophobically modified alkali-swellable acrylic copolymer or methacrylate copolymer, non-limiting examples of which include acrylic acid / acrylonitrile copolymer, acrylates / stearyl polyoxyethylene ethoxylate-20 itaconate copolymer, acrylates / cetyl polyoxyethylene ethoxylate-20 itaconate copolymer, acrylates / aminoacrylate / C10-30 alkyl PEG-20 itaconate copolymer, acrylates / aminoacrylate copolymer, acrylates / stearyl polyoxyethylene ethoxylate-20 methacrylate copolymer, acrylic acid Acrylates / Beheneth-25 Methacrylate Copolymer, Acrylates / Steareth-20 Methacrylate Crosspolymer, Acrylates / Beheneth-25 Methacrylate / HEMA Crosspolymer, Acrylates / Vinyl Neodecanoate Crosspolymer, Acrylates / Vinyl Isodecanoate Crosspolymer, Acrylates / Ceteth-25 Acrylate Copolymer, Acrylic Acid / Acrylamidomethylpropane Sulfonic Acid Copolymer, and Acrylates / C10-C30 Alkyl Acrylate Crosspolymer.

[0194] The thickening polymer may be a soluble cross-linked acrylic polymer, non-limiting examples of which include carbomers.

[0195] The thickening polymer may be an associative polymer thickener, non-limiting examples of which include: hydrophobically modified alkali swellable emulsions, non-limiting examples of which include hydrophobically modified polyacrylates; hydrophobically modified polyacrylic acids and hydrophobically modified polyacrylamides; hydrophobically modified polyethers, wherein these materials may have a hydrophobe selected from cetyl, stearyl, oleyl, and combinations thereof.

[0196] Thickening polymers can be used in combination with polyvinyl pyrrolidone, cross-linked polyvinyl pyrrolidone and derivatives. Thickening polymers can be combined with polyvinyl alcohol and derivatives. Thickening polymers can be combined with polyethylene imine and derivatives.

[0197] Thickening polymers may be combined with alginic acid based materials, non-limiting examples of which include sodium alginate and propylene glycol alginate.

[0198] Thickening polymers may be used in combination with polyurethane polymers, non-limiting examples of which include: hydrophobically modified alkoxylated urethane polymers, non-limiting examples of which include PEG-150 / decyl alcohol / SMDI copolymer, PEG-150 / stearyl alcohol / SMDI copolymer, polyurethane-39.

[0199] Thickening polymers can be combined with associative polymer thickeners, non-limiting examples of which include: hydrophobically modified cellulose derivatives; and hydrophilic moieties having ethylene oxide repeating groups from about 10 to about 300, from about 30 to about 200, from about 40 to about 150 repeating units. Non-limiting examples of this type include PEG-120-methyl glucose dioleate, PEG-(40 or 60) sorbitan tetraoleate, PEG-150 pentaerythritol tetrastearate, PEG-55 propylene glycol oleate, PEG-150 distearate.

[0200] Thickening polymers may be combined with cellulose and derivatives, non-limiting examples include microcrystalline cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, ethyl cellulose; nitrocellulose; cellulose sulfate; cellulose powder; hydrophobically modified cellulose.

[0201] Thickening polymers may be combined with guar gum and guar gum derivatives, non-limiting examples of which include hydroxypropyl guar and hydroxypropyl guar hydroxypropyltrimonium chloride.

[0202] Thickening polymers may be polyethylene oxide; polypropylene oxide; and POE-PPO copolymers.

[0203] The thickening polymer may be combined with a polyalkylene glycol characterized by the following general formula:

[0204]

[0205] Wherein R is hydrogen, methyl, or a mixture thereof, and further is hydrogen, and n is an integer having an average number of 2,000-180,000, or 7,000-90,000, or 7,000-45,000. Non-limiting examples of this type include PEG-7M, PEG-14M, PEG-23M, PEG-25M, PEG-45M, PEG-90M, or PEG-100M.

[0206] The thickening polymer may be combined with silica, non-limiting examples of which include fumed silica, precipitated silica, and silicone surface-treated silica.

[0207] Thickening polymers may be combined with water swellable clays, non-limiting examples of which include laponite, bentonite, montmorillonite, smectite, and hectorite.

[0208] Thickening polymers may be combined with gums, non-limiting examples of which include xanthan gum, guar gum, hydroxypropyl guar gum, gum arabic, gum tragacanth, galactan, carob gum, karaya gum, and locust bean gum.

[0209] Thickening polymers can be combined with dibenzylidene sorbitol, carrageenan, pectin, agar, quince seeds (quince), starch (from rice, corn, potato, wheat, etc.), starch derivatives (e.g., carboxymethyl starch, methylhydroxypropyl starch), algae extracts, dextran, succinoglucan, and pulleran.

[0210] Non-limiting examples of thickening polymers include acrylamide / ammonium acrylate copolymer (and) polyisobutylene (and) polysorbate 20; acrylamide / sodium acryloyldimethyl taurate copolymer / isohexadecane / polysorbate 80, ammonium acryloyldimethyl taurate / VP copolymer, sodium acrylate / sodium acryloyldimethyl taurate copolymer, acrylates copolymer, acrylates crosspolymer-4, acrylates crosspolymer-3, acrylates / beheneth-25 methacrylate copolymer, acrylates / C10-C30 alkyl acrylate crosspolymer, acrylates / stearyl polyoxyethylene ethoxylate-20 itaconate copolymer, poly Ammonium acrylate / isohexadecane / PEG-40 castor oil; Carbomer, sodium carbomer, cross-linked polyvinyl pyrrolidone (PVP), polyacrylamide / C13-14 isoparaffin / laureth-7, polyacrylate 13 / polyisobutylene / polysorbate 20, polyacrylate crosspolymer-6, polyamide-3, polyquaternium-37 (and) hydrogenated polydecene (and) trideceth-6, acrylamide / sodium acryloyldimethyl taurate / acrylic acid copolymer, sodium acrylate / acryloyldimethyl taurate / dimethylacrylamide, crosspolymer (and) isohexadecane (and) polysorbate 60, sodium polyacrylate. Exemplary commercially available thickening polymers include: ACULYN TM 28. ACULYN TM 33. ACULYN TM 88. ACULYN TM 22. ACULYN TM Excel, Aqua SF-1, ETD 2020, Ultrez 20, Ultrez 21, Ultrez 10, Ultrez 30, 1342, Aqua SF-2 polymer, Sepigel TM 305,Simulgel TM 600、SepimaxZen、 SMART 1000, TTA, SC-Plus, PLUS, AVC, Stabylen 30, and their combinations.

[0211] Gel Network

[0212] In the present invention, a gel network may be present. The gel network component of the present invention comprises at least one fatty amphiphile. As used herein, "aliphatic amphiphile" refers to a compound having a hydrophobic tail group and a hydrophilic head group, wherein the hydrophobic tail group is defined as C 12 -C 70 Length alkyl, alkenyl (containing up to 3 double bonds), alkyl aromatic or branched alkyl group, the hydrophilic head group renders the compound insoluble in water, wherein the compound also has a net neutrality at the pH of the shampoo composition.

[0213] The shampoo compositions of the present invention comprise the fatty amphiphile as part of a preformed dispersed gel network phase in amounts of from about 0.05% to about 14%, from about 0.5% to about 10%, and from about 1% to about 8%, by weight of the shampoo composition.

[0214] According to the present invention, suitable fatty amphiphiles or suitable mixtures of two or more fatty amphiphiles have a melting point of at least about 27°C. As used herein, melting point can be determined by, for example, US Pharmacopeia, USP-NF General Chapter <741> The melting point of a mixture of two or more materials is determined by mixing the two or more materials at a temperature above their respective melting points and then cooling the mixture. If the resulting composite material is a homogeneous solid below about 27°C, the mixture has a melting point suitable for use in the present invention. A mixture of two or more fatty amphiphiles is also suitable for use in the present invention, provided that the composite melting point of the mixture is at least about 27°C, wherein the mixture contains at least one fatty amphiphile having an individual melting point less than about 27°C.

[0215] Suitable fatty amphiphiles of the present invention include fatty alcohols, alkoxylated fatty alcohols, fatty phenols, alkoxylated fatty phenols, fatty amides, alkoxylated fatty amides, fatty amines, fatty alkylamidoalkylamines, fatty alkoxylated amines, fatty carbamates, fatty amine oxides, fatty acids, alkoxylated fatty acids, fatty diesters, fatty sorbitan esters, fatty sugar esters, methyl glucoside esters, fatty glycol esters, mono-, di- and triglycerides, polyglycerol fatty esters, alkyl glyceryl ethers, propylene glycol fatty acid esters, cholesterol, ceramides, fatty silicone waxes, fatty glucamides and phospholipids, and mixtures thereof.

[0216] Shampoo compositions may include fatty alcohol gel networks. These gel networks are formed by mixing fatty alcohols with surfactants in a ratio of about 1:1 to about 40:1, about 2:1 to about 20:1, and / or about 3:1 to about 10:1. The formation of the gel network involves heating a dispersion of fatty alcohols in water with the surfactant to a temperature above the melting point of the fatty alcohols. During the mixing process, the fatty alcohols melt, thereby allowing the surfactant to separate into fatty alcohol droplets. The surfactant carries water with it into the fatty alcohols. This turns the isotropic fatty alcohol drops into liquid crystal phase drops. When the mixture is cooled to below the chain melting temperature, the liquid crystal phase transitions to a solid crystalline gel network. The gel network provides a stabilizing benefit to cosmetic creams and hair conditioners. In addition, they also deliver the conditioning feel benefit of hair conditioners.

[0217] The fatty alcohol may be included in the fatty alcohol gel network at a content of about 0.05 wt % to about 14 wt %. For example, the fatty alcohol content may be in the range of about 1 wt % to about 10 wt %, and / or about 6 wt % to about 8 wt %.

[0218] Fatty alcohols useful herein include those having from about 10 to about 40 carbon atoms, from about 12 to about 22 carbon atoms, from about 16 to about 22 carbon atoms, or from about 16 to about 18 carbon atoms. These fatty alcohols may be straight chain alcohols or branched chain alcohols, and may be saturated or unsaturated. Non-limiting examples of fatty alcohols include cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof. A mixture of cetyl alcohol and stearyl alcohol in a ratio of about 20:80 to about 80:20 is suitable.

[0219] Gel Network Preparation: Water is charged to a container and heated to about 74°C. Cetyl alcohol, stearyl alcohol, and SLES surfactant are added to the heated water. After incorporation, the resulting mixture is passed through a heat exchanger where the mixture is cooled to about 35°C. Upon cooling, the fatty alcohol and surfactant crystallize to form a crystalline gel network. Table 1 provides the components of an exemplary gel network composition and their corresponding amounts.

[0220] Table 1

[0221] Gel network components

[0222]

[0223] Water miscible solvents

[0224] Carriers useful for hair care compositions may include aqueous solutions of water and lower alkyl alcohols, polyols, ketones having 3 to 4 carbon atoms, C1-C6 esters of C1-C6 alcohols, sulfoxides, amides, carbonates, ethoxylated and propoxylated C1-C10 alcohols, lactones, pyrrolidones, and mixtures thereof. Non-limiting lower alkyl alcohols are monohydric alcohols having 1 to 6 carbons, such as ethanol and isopropanol. Non-limiting examples of polyols useful herein include propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol, glycerol, propylene glycol, and mixtures thereof.

[0225] The hair care composition may contain a hydrotrope / viscosity modifier which is an alkali metal or ammonium salt of a lower alkylbenzene sulfonate, such as sodium xylene sulfonate, sodium cumene sulfonate or sodium toluene sulfonate.

[0226] The hair care composition may include silicone / PEG-8 silicone / PEG-9 silicone / PEG-n silicone / silicone ether (n may be another integer), non-limiting examples of which include PEG8-dimethicone A208) MW 855, PEG 8 dimethicone D208 MW 2706.

[0227] Soluble anti-dandruff agent

[0228] The anti-dandruff agent may be one material or a mixture selected from the following: azoles, such as climbazole, ketoconazole, itraconazole, econazole and conazole; hydroxypyridones, such as oxymetholone (piroctone olamine), ciclopirox, rilopirox and MEA-hydroxyoctoxypyridone; keratolytics, such as salicylic acid and other hydroxy acids; strobilurins, such as azoxystrobin; and metal chelators, such as 1,10-phenanthroline.

[0229] In the present invention, the azoles antimicrobial can be an imidazole, which is selected from: benzimidazole, benzothiazole, bifonazole, butoconazole nitrate, climbazole, clotrimazole, kruconazole, iberconazole, econazole, new conazole, fenticonazole, fluconazole, flutriazole, isoconazole, ketoconazole, ranoconazole, metronidazole, miconazole, neticonazole, omoconazole, oxiconazole nitrate, sertaconazole, sulconazole nitrate, tioconazole, thiazole and their mixture, or the azoles antimicrobial is a triazole, which is selected from: terconazole, itraconazole and their mixture. The azoles antimicrobial can be ketoconazole. In addition, unique antimicrobial can be ketoconazole.

[0230] The soluble anti-dandruff agent may be present in an amount of about 0.01% to 10%, about 0.1% to about 9%, about 0.2% to 8%, about 0.25% to 6%, about 0.02% to about 8%, about 0.05% to 5%. The soluble anti-dandruff agent may be surfactant soluble, and thus may be a surfactant soluble anti-dandruff agent.

[0231] Scalp Health Supplement

[0232] In the present invention, in addition to the antifungal / anti-dandruff efficacy provided by the surfactant soluble anti-dandruff agent, one or more scalp health agents may be added to provide scalp benefits. This group of materials is varied and provides a wide range of benefits, including moisturizing, barrier improvement, antifungal, antimicrobial and antioxidant agents, anti-itch agents and sensory agents, and additional anti-dandruff agents such as polyvalent metal salts of pyrithione, non-limiting examples include zinc pyrithione (ZPT) and copper pyrithione, sulfur or selenium sulfide. Such scalp health agents include, but are not limited to: vitamins E and F, niacinamide, caffeine, panthenol, zinc oxide, zinc carbonate, basic zinc carbonate, glycols, glycolic acid, PCA, PEG, erythritol, glycerin, triclosan, lactate, hyaluronate, allantoin and other ureas, betaine, sorbitol, glutamate, xylitol, menthol, menthyl lactate, isocyclic ketones, benzyl alcohol, compounds containing the following structure:

[0233]

[0234] R1 is selected from H, alkyl, aminoalkyl, alkoxy;

[0235] Q=H2, O, -OR1, -N(R1)2, -OPO(OR1) x 、-PO(OR1) x 、-P(OR1) x ,in

[0236] x=1-2;

[0237] V=NR1、O、-OPO(OR1) x 、-PO(OR1) x 、-P(OR1) x , where x = 1-2;

[0238] W=H2、O;

[0239] For n=0, X, Y=are independently selected from H, aryl, naphthyl;

[0240] For n ≥ 1, X, Y = aliphatic CH2 or aromatic CH, and Z is selected from aliphatic CH2, aromatic CH or a heteroatom;

[0241] A = lower alkoxy, lower alkylthio, aryl, substituted aryl or fused aryl; and

[0242] Stereochemistry can be varied at the positions marked *.

[0243] and natural extracts / oils including peppermint, spearmint, argan, jojoba and aloe vera.

[0244] The scalp health agent may be present at about 0.01% to 10%, about 0.05% to 9%, about 0.1% to 9%, about 0.1% to 8%, about 0.25% to 8%, and about 0.25% to 6%.

[0245] Optional Ingredients

[0246] In the present invention, the hair care composition may also include one or more optional ingredients, including benefit agents. Suitable benefit agents include, but are not limited to, conditioning agents, cationic polymer silicone emulsions, anti-dandruff agents, gel networks, chelating agents, and natural oils such as sunflower oil or castor oil. In addition, suitable optional ingredients include, but are not limited to, spices, spice microcapsules, colorants, particles, antimicrobial agents, foam inhibitors, antistatic agents, rheology modifiers and thickeners, suspending materials and structurants, pH adjusters and buffers, preservatives, pearlescent agents, solvents, diluents, antioxidants, vitamins, and combinations thereof. The composition may have from about 0.5% to about 7% spices.

[0247] Such optional ingredients should be physically and chemically compatible with the components of the composition and should not otherwise unduly impair product stability, aesthetics or performance. The CTFA Cosmetic Ingredient Handbook, Tenth Edition (published by the Cosmetic, Toiletry and Fragrance Association, Inc., Washington) (2004) (hereinafter "CTFA") describes a wide variety of non-limiting materials that can be added to the compositions herein.

[0248] 1. Conditioning agent

[0249] The conditioning agent of the hair care composition can be a silicone conditioning agent. The silicone conditioning agent can include volatile silicones, non-volatile silicones, or combinations thereof. The concentration of the silicone conditioning agent is typically in the range of about 0.01% to about 10%, about 0.1% to about 8%, about 0.1% to about 5%, and / or about 0.2% to about 3% by weight of the composition. Non-limiting examples of suitable silicone conditioning agents and optional suspending agents for silicones are described in U.S. Reissue Patent 34,584, U.S. Pat. No. 5,104,646, and U.S. Pat. No. 5,106,609, which are incorporated herein by reference.

[0250] The silicone conditioning agent used in the present compositions can have a viscosity of about 20 to about 2,000,000 centistokes ("csk"), about 1,000 to about 1,800,000 csk, about 10,000 to about 1,500,000 csk, and / or about 20,000 to about 1,500,000 csk as measured at 25C.

[0251] The dispersed silicone conditioning agent particles typically have a volume average particle size in the range of about 0.01 microns to about 60 microns. For small particles applied to the hair, the volume average particle size is typically in the range of about 0.01 microns to about 4 microns, about 0.01 microns to about 2 microns, about 0.01 microns to about 0.5 microns.

[0252] Additional information on silicones, including chapters discussing silicone fluids, silicone gums, and silicone resins, and silicone manufacturing, can be found in Encyclopedia of Polymer Science and Engineering, Vol. 15, 2nd Edition, pp. 204-308, John Wiley & Sons, Inc. (1989), which is incorporated herein by reference.

[0253] Silicone emulsions suitable for use in the present invention include, but are not limited to, insoluble polysiloxane emulsions. These can be prepared via emulsion polymerization, such as described in U.S. Pat. No. 6,316,541 or U.S. Pat. No. 4,476,282 or U.S. Patent Application Publication No. 2007 / 0276087, or they can be emulsified after polymerization is complete via a variety of emulsification methods, such as described in U.S. Pat. No. 9,255,184 B2 or U.S. Pat. No. 7,683,119 or in the book edited by Johan Sjoblom. Emulsions and Emulsion Stability, CRC Press, 2005. These references may be consulted for a non-limiting list of suitable emulsifiers and emulsifier blends, based on the functionality of the silicone used, the emulsification method, and the desired emulsion particle size. Thus, suitable insoluble polysiloxanes include polysiloxanes, such as α,ω-hydroxyl terminated polysiloxanes or α,ω-alkoxy terminated polysiloxanes, having an internal phase viscosity of about 5 csk to about 500,000 csk. For example, the insoluble polysiloxane may have an internal phase viscosity of: less than 400,000 csk; less than 200,000 csk; about 10,000 csk to about 180,000 csk. The insoluble polysiloxane may have an average particle size in the range of about 10 nm to about 10 microns. The average particle size may be in the range of about 15 nm to about 5 microns, about 20 nm to about 1 micron, or about 25 nm to about 550 nm, or about 1 micron to 10 microns. The concentration of the dispersed silicone in the emulsion may be in the range of about 5 to 90%, or 20 to 85%, or 30 to 80% by weight of the emulsion composition.

[0254] The average molecular weight of the insoluble polysiloxane, the viscosity of the internal phase of the insoluble polysiloxane, the viscosity of the silicone emulsion, and the size of the particles containing the insoluble polysiloxane are determined by methods commonly used by those skilled in the art, such as the method disclosed in Smith, AL, The Analytical Chemistry of Silicones, John Wiley & Sons, Inc.: New York, 1991. For example, the viscosity of the silicone emulsion can be measured at 30° C. using a Brookfield viscometer and spindle 6 at 2.5 rpm. The silicone emulsion may also include additional emulsifiers as well as anionic surfactants.

[0255] Other types of silicones suitable for use in the compositions of the present invention include, but are not limited to: i) silicone fluids, including but not limited to silicone oils, which are flowable materials having a viscosity of less than about 1,000,000 csk as measured at 25°C; ii) aminosilicones comprising at least one primary, secondary or tertiary amine; iii) cationic silicones comprising at least one quaternary ammonium functional group; iv) silicone gums; which include materials having a viscosity greater than or equal to 1,000,000 csk as measured at 25°C; v) silicone resins comprising highly crosslinked polymerized siloxane systems; vi) high refractive index silicones having a refractive index of at least 1.46, and vii) mixtures thereof.

[0256] The conditioning agent of the hair care composition of the present invention may also include at least one organic conditioning material such as an oil or wax, alone or in combination with other conditioning agents such as the above-mentioned silicones. The organic material may be non-polymeric, oligomeric or polymeric. It may be in the form of an oil or wax and may be added as a pure formulation or in a pre-emulsified form. Some non-limiting examples of organic conditioning materials include, but are not limited to: i) hydrocarbon oils; ii) polyolefins; iii) fatty esters; iv) fluorinated conditioning compounds; v) fatty alcohols; vi) alkyl glucosides and alkyl glucoside derivatives; vii) quaternary ammonium compounds; viii) polyethylene glycols and polypropylene glycols having a molecular weight of up to about 2,000,000, including those having the CTFA designations PEG-200, PEG-400, PEG-600, PEG-1000, PEG-2M, PEG-7M, PEG-14M, PEG-45M, and mixtures thereof.

[0257] 2. Emulsifier

[0258] A variety of anionic and nonionic emulsifiers can be used in the hair care compositions of the present invention. Anionic and nonionic emulsifiers can be monomeric or polymeric in nature. For example, examples of monomers include, but are not limited to, alkyl ethoxylates, alkyl sulfates, soaps, and fatty acid esters, and their derivatives. By way of illustration and not limitation, examples of polymers include polyacrylates, polyethylene glycols, and block copolymers, and their derivatives. Naturally occurring emulsifiers such as lanolin, lecithin, and lignin, and their derivatives, are also non-limiting examples of useful emulsifiers.

[0259] 3. Chelating agents

[0260] The hair care composition may also contain a chelating agent. Suitable chelating agents include those listed in Critical Stability Constants Vol. 1 by AE Martell & RM Smith (Plenum Press, New York & London (1974)) and Metal Complexes in Aqueous Solution by AE Martell & RD Hancock (Plenum Press, New York & London (1996)), both of which are incorporated herein by reference. When referring to chelating agents, the term "their salts and derivatives" refers to salts and derivatives having the same functional structure (e.g., the same chemical backbone) as the chelating agent to which they refer and having similar or better chelating properties. The term includes alkali metal salts, alkaline earth metal salts, ammonium salts, substituted ammonium (i.e., monoethanolamine, diethanolamine, triethanolammonium) salts, esters, and mixtures thereof of chelating agents having an acidic portion, especially all sodium, potassium or ammonium salts. The term "derivative" also includes "chelating surfactant" compounds such as those exemplified in U.S. Pat. No. 5,284,972, and macromolecules containing one or more chelating groups having the same functional structure as the parent chelating agent such as the polymer EDDS (ethylenediamine disuccinic acid) disclosed in U.S. Pat. No. 5,747,440.

[0261] Chelating agents may be incorporated into the compositions herein in amounts ranging from 0.001% to 10.0%, about 0.01% to 2.0% by weight of the total composition.

[0262] Non-limiting classes of chelating agents include carboxylic acids, aminocarboxylic acids including amino acids, phosphoric acids, phosphonic acids, polyphosphonic acids, polyethyleneimines, polyfunctionally substituted aromatic compounds, their derivatives and salts.

[0263] Non-limiting chelating agents include the following and their salts. Ethylenediaminetetraacetic acid (EDTA), ethylenediaminetriacetic acid, ethylenediamine-N,N'-disuccinic acid (EDDS), ethylenediamine-N,N'-diglutaric acid (EDDG), salicylic acid, aspartic acid, glutamic acid, glycine, malonic acid, histidine, diethylenetriaminepentaacetate (DTPA), N-hydroxyethylethylenediaminetriacetate, nitrilotriacetate, ethylenediaminetetrapropionate, triethylenetetraaminehexaacetate, ethanol diglycine, propylenediaminetetraacetate (PDTA), methylglycine diacetic acid (MODAA), diethylenetriaminepentaacetic acid, methylglycine diacetic acid (MGDA), N-acyl-N,N',N' -ethylenediaminetriacetic acid, nitrilotriacetic acid, ethylenediamine diglutaric acid (EDGA), 2-hydroxypropylenediamine disuccinic acid (HPDS), glycinamide-N,N'-disuccinic acid (GADS), 2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS), N-2-hydroxyethyl-N,N-diacetic acid, glycerol iminodiacetic acid, iminodiacetic acid-N-2-hydroxypropyl sulfonic acid, aspartic acid N-carboxymethyl-N-2-hydroxypropyl-3-sulfonic acid, alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid, aspartic acid N-monoacetic acid, iminodisuccinic acid, diamine-N,N'-dicarboxylic acid, mono Amide-N,N'-dicarboxylic acid, diaminoalkyl di(sulfosuccinic acid) (DDS), ethylenediamine-N-N'-bis(o-hydroxyphenylacetic acid), N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid, ethylenediamine tetrapropionate, triethylenetetraaminehexaacetate, diethylenetriaminepentaacetate, pyridine dicarboxylic acid, ethylenedicysteine ​​(EDC), ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid) (EDDHA), glutamic acid diacetic acid (GLDA), hexaadenylic acid aminocarboxylate (HBED), polyethyleneimine, 1-hydroxydiphosphonate, aminotri(methylenephosphonic acid) (ATMP), Nitrilotrimethylenephosphonate (NTP), ethylenediaminetetramethylenephosphonate, diethylenetriaminepentamethylenephosphonate (DTPMP), ethane-1-hydroxydiphosphonate (HEDP), 2-phosphonobutane-1,2,4-tricarboxylic acid, polyphosphoric acid, sodium tripolyphosphate, tetrasodium diphosphate, hexametaphosphoric acid, sodium metaphosphate, phosphonic acid and its derivatives, aminoalkylene-poly(alkylenephosphonic acid), aminotri(1-ethylphosphonic acid), ethylenediaminetetra(1-ethylphosphonic acid), aminotri(1-propylphosphonic acid), aminotri(isopropylphosphonic acid), ethylenediaminetetra(methylenephosphonic acid) (EDTMP), 1,2-dihydroxy-3,5-disulfonylbenzene.

[0264] Aqueous carrier

[0265] The hair care composition may be in the form of a pourable liquid (under ambient conditions). Such compositions will therefore typically comprise a carrier present at a level of from about 40% to about 85%, alternatively from about 45% to about 80%, or alternatively from about 50% to about 75%, by weight of the hair care composition. The carrier may comprise water, or a miscible mixture of water and an organic solvent, and in one aspect, may comprise water with minimal or insignificant concentrations of organic solvents, except for those otherwise incidentally incorporated into the composition as minor ingredients of other essential or optional components.

[0266] Carriers useful in the hair care compositions of the present invention may include water and aqueous solutions of lower alkyl alcohols and polyols. The lower alkyl alcohols useful herein are monohydric alcohols having 1 to 6 carbons, in one aspect, ethanol and isopropanol. Exemplary polyols useful herein include propylene glycol, hexylene glycol, glycerol and propane diol.

[0267] G. Product form

[0268] The hair care compositions of the present invention may be in the form of typical hair care formulations. They may be in the form of solutions, dispersions, emulsions, powders, talcs, encapsulations, spheres, sponges, solid dosage forms, foams, and other delivery mechanisms. The compositions of the present invention may be hair tonics, leave-in hair products such as treatments, and styling products, rinse-off hair products such as shampoos and personal cleansing products, and treatment products; and any other form that may be applied to the hair.

[0269] H. Application Device

[0270] In the present invention, the hair care composition can be dispensed from an applicator for direct dispensing to the scalp area. Dispensing directly onto the scalp via a targeted delivery applicator enables deposition of undiluted cleansing agent directly where the cleaning need is highest. This also minimizes the risk of eye contact with the cleaning solution.

[0271] The applicator is attached or attachable to a bottle containing a clean hair care composition. The applicator may consist of a base that houses or extends to a single or multiple tines. The tines have openings that may be located at the tip, the base, or any point between the tip and the base. These openings allow the product to be dispensed directly from the bottle onto the hair and / or scalp.

[0272] Alternatively, the applicator may also consist of brush-like bristles attached to or extending from a base. In this case, the product will be dispensed from the base, and the bristles will allow product dispensing via a combing or brushing motion.

[0273] Applicator and tine design and materials may also be optimized to achieve scalp massage. In this case, it may be advantageous to have the tine or bristle geometry at the tip be more rounded, similar to a roller ball applicator for eye cream. Materials that are smoother and softer may also be beneficial; for example, metallic or metallic-like finishes, "rubbery materials".

[0274] Materials and methods

[0275] Antimicrobial effectiveness testing

[0276] The following method is based on the United States Pharmacopoeia <51> A yeast / mold pool consisting of the following was inoculated into the shampoo composition as well as a saline control to deliver 5.0-7.0 log 10 cfu / ml of target bioburden: C. albicans and A. brasiliensis. After 2 and 7 days of incubation at room temperature, the inoculated composition and saline control were diluted in modified lecithin broth (Becton Dickinson, catalog number 263010) + polysorbate 80. The solution was poured into tryptic soy agar (Becton Dickinson, catalog number 255320) containing lecithin and polysorbate 80 in triplicate plates and colony forming units (cfu) were counted.

[0277] Logarithmic reduction calculation

[0278] The pour plate data were averaged and then multiplied by the dilution factor to calculate the average microbial cfu per ml as shown in the sample calculations below. The microbial log reduction was calculated by dividing the cfu per ml of the time matched (2 day or 7 day) saline control by the cfu per ml of the composition and taking the log of the quotient. 10 The resulting number is the log reduction of the composition over the saline control. Based on the fluctuations in the antimicrobial effectiveness testing, a difference of 0.5 log reduction between compositions was considered a significant difference.

[0279] Alternatively, another general method for calculating log reduction in a composition would be to dilute the inoculum at the time of inoculation and count the colonies after appropriate incubation in growth agar. The resulting cfu per ml of inoculum would be used to replace the saline control in the numerator of the formula used to calculate log reduction.

[0280] Calculation of the net change in log reduction

[0281] The net change in microbial log reduction can be calculated by subtracting the log reduction of the unpreserved control from the log reduction of the shampoo composition.

[0282] Sample calculation :

[0283] <![CDATA[ Logarithmic reduction Samples]]> Average CFU Dilution Factor Shampoo composition 10.3 100 brine 149 10,000

[0284] Average cfu / mL = average cfu × dilution factor

[0285] Average cfu / mL of composition = 10.3 x 100

[0286] Average cfu / mL of composition = 1.03×10 3

[0287]

[0288] Log reduction = 3.2

[0289] Net change in log reduction

[0290] sample Logarithmic reduction Shampoo composition 3.2 Unpreserved control -0.2

[0291] Net change in log reduction

[0292] = Log reduction of composition - Log reduction of unpreserved control Net change in log reduction = 3.2 - (-0.2)

[0293] Net change in log reduction = 3.4

[0294] Preparation of shampoo compositions

[0295] The shampoo composition is prepared by adding the remainder of the surfactant, antidandruff agent, perfume, viscosity modifier, cationic polymer, preservative, conditioning agent and water with sufficient stirring to ensure a uniform mixture. The mixture may be heated to 50-75°C to accelerate the dissolution of the soluble agents and the hydration of the cationic polymer, and then cooled.

[0296] The product pH can be adjusted as needed to provide a shampoo composition of the present invention suitable for application to human hair and scalp, and based on the selection of the particular detersive surfactant and / or other components, the product pH can vary from pH about ≤ 6, or from about 4.5 to about 6, or from greater than 4.5 to about 6, or from about 4 to 6, or from about pH 4 to 5.8, or from about pH 4.5 to 5.8, or from greater than 4.5 to 5.8, or from 4.5 to 5.5, or from greater than 4.5 to 5.5.

[0297] Non-limiting examples

[0298] The shampoo compositions illustrated in the following examples can be prepared by conventional formulation and mixing methods. Unless otherwise specified, all exemplified amounts are listed as weight percentages based on active material, and except for minor materials such as diluents, preservatives, color solutions, imaginary ingredients, botanicals, etc. Unless otherwise specified, all percentages are based on weight.

[0299]

[0300]

[0301]

[0302]

[0303] Discussion of the results of Examples 1-6

[0304] As described in the method disclosure, a difference of 0.5 log reduction between compositions was considered a significant difference based on the fluctuations in the antimicrobial effectiveness test.

[0305] Examples 2, 3, 4, and 6 are representative compositions of the invention. When Examples 2 and 3 were compared to their unpreserved control (Example 1), the net change in yeast / mold log reduction for both Examples was 3.9 at the 7 day time point. When Examples 5 and 6 were compared to their unpreserved control (Example 4), the net change in yeast / mold log reduction was 3.6 at the 7 day time point. These net changes in log reduction represent a significant improvement in the antimicrobial properties of the representative compositions over the unpreserved control, and the extremely low levels of benzoate and salicylate present in Examples 2, 3, 5, and 6 (0.02-0.04%) are surprising.

[0306] The present results demonstrate a hair care composition, wherein the composition provides a net change in yeast and / or mold log reduction of 0.5 or greater compared to an unpreserved control. The present results demonstrate a hair care composition, wherein the composition provides a net change in yeast and / or mold log reduction of 0.5 or greater compared to an unpreserved control at a 7 day time point.

[0307] The dimensions and values ​​disclosed herein are not to be understood as being strictly limited to the exact numerical values ​​cited. Instead, unless otherwise indicated, each such dimension is intended to represent the stated value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

[0308] Unless expressly excluded or otherwise limited, each document cited herein, including any cross-referenced or related patent or patent application and any patent application or patent to which this application claims priority or the benefit of, is hereby incorporated by reference in its entirety. The citation of any document is not an admission that it is prior art to any of the present invention disclosed or claimed herein, or an admission that it, by itself or in combination with any one or more of the references, proposes, suggests, or discloses any such invention. In addition, to the extent that any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this invention shall govern.

[0309] Although specific embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the present invention. Therefore, it is intended that all such changes and modifications within the scope of the present invention be encompassed in the appended claims.

Claims

1. A hair care composition comprising: a. 8 to 17% of one or more surfactants; b. 0.01% to 10% of one or more surfactant-soluble anti-dandruff agents, preferably 0.01% to 9%; preferably 0.02% to 8%; preferably 0.05% to 5%; c. 0.01% to 5% of one or more thickening polymers based on polyacrylates or polyacrylamides, preferably 0.08% to 3.5%, preferably 0.1% to 3%, preferably 0.25% to 3%; d. 0.02 to 0.15% salicylate or acid, preferably 0.04 to 0.18%; e. 0.02 to 0.15% of benzoate or acid, preferably 0.04 to 0.18%; wherein there is a weight ratio of said salicylate or acid to said benzoate or acid of 1:1 to 1:0.

08.

2. A hair care composition according to any one of the preceding claims, wherein the salicylic acid salt or acid is sodium salicylate.

3. A hair care composition according to any one of the preceding claims, wherein the benzoate salt or acid is sodium benzoate.

4. A hair care composition according to any one of the preceding claims, wherein there is a weight ratio of the salicylate or acid to the benzoate or acid of 1:1 to 1:0.08, preferably a weight ratio of the salicylate or acid to the benzoate or acid of 1:0.9 to 1:0.08, preferably a weight ratio of the salicylate or acid to the benzoate or acid of 1:0.8 to 1:0.08, preferably a weight ratio of the salicylate or acid to the benzoate or acid of 1:0.75 to 1:0.08, preferably a weight ratio of the salicylate or acid to the benzoate or acid of 1:

0. :0.9 to 1:0.1 weight ratio of the salicylate or acid to the benzoate or acid, preferably 1:0.9 to 1:0.2 weight ratio of the salicylate or acid to the benzoate or acid, preferably 1:0.8 to 1:0.2 weight ratio of the salicylate or acid to the benzoate or acid, preferably 1:0.75 to 1:0.2 weight ratio of the salicylate or acid to the benzoate or acid, preferably 1:0.8 to 1:1 / 3 weight ratio of the salicylate or acid to the benzoate or acid.

5. A hair care composition according to any one of the preceding claims, wherein the composition has a pH less than or equal to 6, preferably wherein the composition has a pH greater than 4.5 and less than 6.

6. A hair care composition according to any preceding claim, wherein the composition provides a net change in yeast and / or mold log reduction of 0.5 or greater compared to its unpreserved control.

7. A hair care composition according to any one of the preceding claims, wherein at the 7 day time point, the composition provides 0.5 or greater yeast and / or or net change in mold log reduction.

8. A hair care composition according to any one of the preceding claims, wherein the one or more surfactant-soluble anti-dandruff agents is a hydroxypyridine, preferably wherein the one or more surfactant-soluble anti-dandruff agents is piroctone olamine.

9. A hair care composition according to any one of the preceding claims, wherein the one or more surfactant soluble anti-dandruff agents is an azole, preferably wherein the azole is climbazole.

10. A hair care composition according to any one of the preceding claims, 8% to 16%, preferably one or more surfactants are present at 8% to 15%, preferably one or more surfactants are present at 8% to 14%, preferably one or more surfactants are present at 8% to 13%, preferably one or more surfactants are present at 8% to 12%, preferably wherein the one or more surfactants are anionic surfactants or a combination of anionic surfactants, preferably wherein the surfactant is an anionic surfactant selected from the group consisting of anionic alkyl sulfates and alkyl ether sulfates having a linear or branched alkyl chain and mixtures thereof, preferably wherein the surfactant is a surfactant or a combination of surfactants selected from the group consisting of sodium lauryl sulfate, wherein n Sodium laureth-n sulfate between 0.5 and 3.5, wherein the alkyl chain may be a linear or branched C10-15 alkyl sodium sulfate, wherein n is between 0.5 and 3.5 and the alkyl chain may be a linear or branched C10-15 alkyl sodium polyoxyethylene ether-n sulfate, sodium decyl sulfate, wherein n is between 0.5 and 3.5 decyl polyoxyethylene ether-n sodium sulfate, sodium undecyl sulfate, wherein n is between 0.5 and 3.5 undecyl polyoxyethylene ether-n sodium sulfate, sodium tridecyl sulfate, wherein n is between 0.5 and 3.5 tridecyl polyoxyethylene ether-n sodium sulfate, anionic surfactants selected from the following: a.R1 O(CH2CHR3O) y SO3M; b.CH3(CH2) z CHR2 CH2 O(CH2 CHR3O) y SO3M; and c. mixtures thereof, Where R1 represents CH3(CH2) 10 , R2 represents H or a hydrocarbon group containing 1 to 4 carbon atoms, such that the sum of the carbon atoms in z and R2 is 8, R3 is H or CH3, y is 0 to 7, when y is not zero (0), the average value of y is 1, and M is a monovalent or divalent positively charged cation.

11. A hair care composition according to any one of the preceding claims, wherein the surfactant or combination of surfactants is substantially free of sulfate-based surfactants, preferably wherein the surfactant is a surfactant or combination of surfactants selected from the group consisting of amino acid-based anionic surfactants, sulfosuccinates, isethionates, sulfonates, sulfoacetates, sulfolaurates, glucose carboxylates, alkyl ether carboxylates, acyl taurates, lactylates, alkenyl lactylates and mixtures thereof.

12. A hair care composition according to any preceding claim further comprising from 0.25% to 15% of one or more amphoteric, nonionic or zwitterionic co-surfactants.

13. A hair care composition according to any one of the preceding claims, further comprising from 0.08% to 3%, preferably from 0.1% to 2%, preferably from 0.2% to 1% of one or more cationic polymers selected from cationic guar polymers, cationic non-guar galactomannan polymers, cationic tapioca polymers, cationic copolymers of acrylamide monomers and cationic monomers, synthetic non-crosslinked cationic polymers that may or may not form lyotropic liquid crystals upon combination with a detersive surfactant, cationic cellulose polymers and mixtures thereof, preferably wherein the one or more cationic polymers are selected from guar hydroxypropyltrimonium chloride, salts of hydroxyethylcellulose reacted with trimethylammonium substituted epoxides, cationic copolymers of acrylamide monomers and cationic monomers, synthetic non-crosslinked cationic polymers that may or may not form lyotropic liquid crystals upon combination with a detersive surfactant.

14. A hair care composition according to any one of the preceding claims, wherein the one or more polyacrylate or polyacrylamide based thickening polymers is a hydrophobically modified alkali swellable acrylic copolymer, preferably wherein the one or more polyacrylate or polyacrylamide based thickening polymers is an acrylate copolymer.

15. A hair care composition according to any one of the preceding claims, further comprising from 0.01% to 10%, preferably from 0.05% to 9%, preferably from 0.1% to 8% of one or more scalp health agents selected from sulphur, menthol, menthyl lactate, polyvalent metal salts of pyrithione and mixtures thereof; preferably wherein the one or more scalp health agents is zinc pyrithione.

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