Aqueous conditioner formulation for thermally styled hair

Abstract

An aqueous conditioner formulation for thermally styled hair is provided, comprising an aqueous carrier and a modified carbohydrate polymer, the modified carbohydrate polymer comprising (i) a cellulose ether-based material functionalized with a trialkylammonium moiety of formula (I), wherein each R is independently a C alkyl group, wherein the modified carbohydrate polymer has an ash- and volatile-corrected Kjeldahl nitrogen content, TKN, of 0.75 to 2.5 wt. %, and (ii) a cellulose ether-based material functionalized with a hydrophobic substituent having 16 carbon atoms, wherein the modified carbohydrate polymer has 0.005 to 1.5 wt. % hydrophobic substituents, based on the weight of the cellulose ether-based material, and the hydrophobic substituents are randomly distributed throughout the backbone of the cellulose ether-based material, the cellulose ether-based material having a weight average molecular weight, M, of >1,000,000 Daltons, and the modified carbohydrate polymer has <0.001 wt. % crosslinking units, based on the weight of the modified carbohydrate polymer.

Description

[Technical Field]

[0001] The present invention relates to an aqueous conditioner formulation for heat-styled hair. In particular, the present invention relates to an aqueous conditioner formulation for heat-styled hair comprising a cosmetically acceptable aqueous carrier and a modified carbohydrate polymer, wherein the modified carbohydrate polymer comprises (i) the trialkylammonium portion of formula (I). [ka] (In the formula, each R 1 C 1~7 (ii) a cellulose ether material functionalized with alkyl groups, wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for 0.75 to 2.5% by weight of ash and volatile substances, and (ii) a cellulose ether material functionalized with hydrophobic substituents having 16 carbon atoms, wherein the modified carbohydrate polymer has 0.005 to 1.5% by weight of hydrophobic substituents based on the weight of the cellulose ether material, wherein the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether material, and the cellulose ether material has a weight-average molecular weight of >1,000,000 Daltons, M W The modified carbohydrate polymer has <0.001% by weight of crosslinking units based on the weight of the modified carbohydrate polymer.

[0002] Traditional rinse-off hair conditioners are popular with consumers for treating hair.

[0003] One hair conditioning composition is described by Salvador et al. in U.S. Patent Publication 2004 / 0115155. Salvador et al. disclose a hair conditioning composition comprising: (a) about 0.001% to about 5% by weight of a cellulose polymer having a molecular weight of about 10,000 to about 10,000,000; (b) about 0.01% to about 10% by weight of a cationic surfactant; (c) about 0.01% to about 15% by weight of a high-melting-point aliphatic compound having a melting point of 25°C or higher; and (d) an aqueous carrier.

[0004] Nevertheless, there remains a need for water-based conditioner formulations for use with heat-styled hair that provide improved hair alignment.

[0005] The present invention provides an aqueous conditioner formulation for thermally styled hair comprising a cosmetically acceptable aqueous carrier and a modified carbohydrate polymer, wherein the modified carbohydrate polymer comprises (i) the trialkylammonium moiety of formula (I). [ka] (In the formula, each R 1 C 1~7 (ii) a cellulose ether material functionalized with a cellulose ether polymer (selected from the group consisting of alkyl groups), wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for 0.75 to 2.5% by weight of ash and volatile substances, and (ii) a cellulose ether material functionalized with a hydrophobic substituent, each having 16 carbon atoms, wherein the modified carbohydrate polymer contains 0.005 to 1.5% by weight of the hydrophobic substituent based on the weight of the cellulose ether material, wherein the hydrophobic substituent is randomly distributed throughout the main chain of the cellulose ether material, and the cellulose ether material has a weight-average molecular weight of >1,000,000 Daltons, M W The modified carbohydrate polymer contains <0.001% by weight of crosslinking units based on the weight of the modified carbohydrate polymer.

[0006] The present invention provides (a) a cosmetically acceptable aqueous carrier and (b) selecting a hair alignment enhancer for improving hair alignment, wherein the hair alignment enhancer is selected to be a modified carbohydrate polymer, and the modified carbohydrate polymer contains (i) a trialkylammonium moiety of formula (I) (where each R 1 is independently selected from the group consisting of C 1~7 alkyl groups), and here the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for 0.75 to 2.5 wt% ash and volatiles, and (ii) contains a cellulose ether-based material functionalized with hydrophobic substituents each having 16 carbon atoms, and here the modified carbohydrate polymer contains 0.005 to 1.5 wt% hydrophobic substituents based on the weight of the cellulose ether-based material, the hydrophobic substituents being randomly distributed throughout the main chain of the cellulose ether-based material, the cellulose ether-based material having a weight average molecular weight, M W greater than 1,000,000 daltons, and the modified carbohydrate polymer contains <0.001 wt% crosslinked units based on the weight of the modified carbohydrate polymer, selecting; (c) providing the selected hair alignment enhancer; and (d) combining the cosmetically acceptable aqueous carrier and the hair alignment enhancer, to provide a method for producing an aqueous conditioner formulation for thermally styled hair, the aqueous conditioner formulation containing 0.1 to 5 wt% hair alignment enhancer based on the weight of the aqueous conditioner formulation.

[0007] The present invention provides a method for maintaining thermally styled hair, comprising providing an aqueous conditioner formulation according to the present invention, applying the aqueous conditioner formulation to mammalian hair, and thermally styling the hair.

DETAILED DESCRIPTION OF THE INVENTION

[0008] The inventors have surprisingly found that hair alignment for thermally styled hair can be significantly improved after treatment with an aqueous conditioner formulation specially selected to contain a modified carbohydrate polymer, the modified carbohydrate polymer comprising (i) a trialkylammonium moiety of formula (I) [Chemical formula] (where each R 1 is independently selected from the group consisting of C 1~7 alkyl groups) and a cellulose ether-based material functionalized thereby, wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for 0.75 to 2.5 wt% ash and volatiles, and (ii) a cellulose ether-based material functionalized with hydrophobic substituents each having 16 carbon atoms, wherein the modified carbohydrate polymer comprises 0.005 to 1.5 wt% hydrophobic substituents based on the weight of the cellulose ether-based material, the hydrophobic substituents being randomly distributed throughout the backbone of the cellulose ether-based material, the cellulose ether-based material having a weight average molecular weight, M W of > 1,000,000 daltons, and the modified carbohydrate polymer comprises < 0.001 wt% cross-linked units based on the weight of the modified carbohydrate polymer, such that the hair treated thereby maintains its shape even after incubation for 1 week in an environment of 25 °C and 50% humidity.

[0009] Unless otherwise indicated, ratios, percentages, parts, etc. are by weight.

[0010] As used herein, unless otherwise indicated, "molecular weight" or M WThe term "refers to the weight average molecular weight measured by conventional methods using conventional standards such as gel permeation chromatography (GPC) and polyethylene glycol standards. The GPC technique is discussed in detail in Modern Size Exclusion Chromatography, W.W. Yau, J.J. Kirkland, D.D. Bly; Wiley-Interscience, 1979, and A Guide to Materials Characterization and Chemical Analysis, J.P. Sibilia; VCH, 1988, pp. 81-84. Molecular weights are reported herein in units of daltons or equivalently g / mol.

[0011] As used herein and in the appended claims, the term "cosmetically acceptable" refers to ingredients typically used in personal care compositions and is intended to emphasize that materials that are toxic when present in amounts typically found in personal care compositions are not contemplated as part of the present invention.

[0012] Preferably, the aqueous conditioning formulation for thermally styled hair of the present invention is selected from the group consisting of shampoos, conditioning shampoos, leave-on hair conditioners, rinse-off hair conditioners, hair colorants, hair styling gels, and hair straighteners. More preferably, the aqueous conditioning formulation for thermally styled hair of the present invention is selected from the group consisting of shampoos, conditioning shampoos, leave-on hair conditioners, and rinse-off hair conditioners. Most preferably, the aqueous conditioning formulation for thermally styled hair of the present invention is a rinse-off conditioner.

[0013] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention comprises a cosmetically acceptable aqueous carrier (preferably, the aqueous conditioner formulation contains 25 to 99% by weight (preferably 50 to 98.5% by weight, more preferably 75 to 98% by weight, most preferably 80 to 97% by weight) of a cosmetically acceptable carrier based on the weight of the aqueous conditioner formulation) and a modified carbohydrate polymer (preferably, the aqueous conditioner formulation contains 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation), wherein the modified carbohydrate polymer comprises (i) the trialkylammonium portion of formula (I). [ka] (In the formula, each R 1 C is independent 1~7 Alkyl alkyl group (preferably C 1~4(ii) A cellulose ether material functionalized with an alkyl group (more preferably selected from the group consisting of a methyl group and an ethyl group, most preferably a methyl group), wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatile substances of 0.75 to 2.5% by weight (preferably 0.8 to 2.2% by weight, more preferably 1.5 to 2.1% by weight, most preferably 1.7 to 1.8% by weight), and (ii) a cellulose ether material functionalized with a hydrophobic substituent, each having 16 carbon atoms, wherein the modified carbohydrate polymer is cellulose Based on the weight of the cellulose ether material, it contains >0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of hydrophobic substituents, the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether material, and the cellulose ether material has a weight-average molecular weight of >1,000,000 daltons (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W The modified carbohydrate polymer contains, based on the weight of the modified carbohydrate polymer, <0.001% by weight (preferably <0.0001% by weight, more preferably <0.00001% by weight, most preferably less than the detectable limit) of crosslinking units.

[0014] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention comprises a cosmetically acceptable aqueous carrier. More preferably, the aqueous conditioner formulation of the present invention comprises 25 to 99% by weight (preferably 50 to 98.5% by weight, more preferably 75 to 98% by weight, most preferably 80 to 97% by weight) of a cosmetically acceptable aqueous carrier based on the weight of the aqueous conditioner formulation. Most preferably, the aqueous conditioner formulation of the present invention comprises 25 to 99% by weight (preferably 50 to 98.5% by weight, more preferably 75 to 98% by weight, most preferably 80 to 97% by weight) of a cosmetically acceptable aqueous carrier based on the weight of the aqueous conditioner formulation, wherein the cosmetically acceptable aqueous carrier comprises water.

[0015] Preferably, the water used in the aqueous conditioner formulation of the present invention is at least one of distilled water and deionized water. More preferably, the water used in the aqueous conditioner formulation of the present invention is distilled and deionized.

[0016] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention comprises a modified carbohydrate polymer. More preferably, the aqueous conditioner formulation of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation. Most preferably, the aqueous conditioner formulation of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (i) the trialkylammonium portion of formula (I). [ka] (In the formula, each R 1 C is independent 1~7 Alkyl alkyl group (preferably C 1~4(ii) A cellulose ether material functionalized with an alkyl group, more preferably a methyl group and an ethyl group, most preferably a methyl group (selected from the group consisting of alkyl groups), wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatile substances of 0.75 to 2.5% by weight (preferably 0.8 to 2.2% by weight, more preferably 1.5 to 2.1% by weight, most preferably 1.7 to 1.8% by weight), and (ii) a cellulose ether material functionalized with a hydrophobic substituent having 16 carbon atoms, wherein the modified carbohydrate polymer is cellulose ether Based on the weight of the cellulose ether material, it contains 0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of hydrophobic substituents, the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether material, and the cellulose ether material has a weight-average molecular weight of >1,000,000 daltons (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W The modified carbohydrate polymer contains, based on the weight of the modified carbohydrate polymer, <0.001% by weight (preferably <0.0001% by weight, more preferably <0.00001% by weight, most preferably less than the detectable limit) of crosslinking units.

[0017] Preferably, the cellulose ether-based material has a weight-average molecular weight of >1,000,000 (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W It has. More preferably, the cellulose ether-based material has a weight-average molecular weight of >1,000,000 (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M WThe cellulose ether material is selected from the group consisting of hydroxyethylcellulose, hydroxypropylcellulose, ethylhydroxyethylcellulose, methylcellulose, hydroxypropylmethylcellulose, hydroxyethylmethylcellulose, and mixtures thereof. More preferably, the cellulose ether material has a weight-average molecular weight of >1,000,000 (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W The cellulose ether material is selected from the group consisting of hydroxyethylcellulose, hydroxypropylcellulose, and mixtures thereof. Most preferably, the cellulose ether material has a weight-average molecular weight of >1,000,000 (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W The cellulose ether-based material is hydroxyethylcellulose.

[0018] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (i) the trialkylammonium moiety of formula (I) (wherein each R 1 C 1~7 Alkyl alkyl group (preferably C 1~4The invention comprises a cellulose ether-based material functionalized with an alkyl group (more preferably a methyl group and an ethyl group, most preferably a methyl group), wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatile substances, of 0.75 to 2.5% by weight (preferably 0.8 to 2.2% by weight, more preferably 1.5 to 2.1% by weight, most preferably 1.7 to 1.8% by weight). More preferably, the aqueous conditioner formulation for thermally styled hair of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (i) a trialkylammonium moiety of formula (I) (wherein each R 1 C 1~7 Alkyl alkyl group (preferably C 1~4 The modified carbohydrate polymer comprises a cellulose ether-based material functionalized with an alkyl group (more preferably a methyl group and an ethyl group, most preferably a methyl group), wherein the modified carbohydrate polymer has a corrected Kjeldahl nitrogen content (TKN) of 0.75 to 2.5% by weight (preferably 0.8 to 2.2% by weight, more preferably 1.5 to 2.1% by weight, most preferably 1.7 to 1.8% by weight) for ash and volatile substances, and the modified carbohydrate polymer contains a trialkylammonium moiety having formula (II) in amounts of <0.1 moles (preferably <0.01 moles, more preferably <0.001 moles, most preferably less than the detection limit) per mole of the cellulose ether-based material. [ka] (In the formula, each R 2 R3 is independently selected from methyl and ethyl groups, and C 8~30 (Selected from alkyl groups).

[0019] Preferably, the aqueous conditioner formulation for thermally styled hair of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (ii) a cellulose ether-based material functionalized with a hydrophobic substituent, where the hydrophobic substituent comprises an alkyl group having 16 carbon atoms, and the modified carbohydrate polymer comprises 0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of a hydrophobic substituent based on the weight of the cellulose ether-based material. More preferably, the aqueous conditioner formulation of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (ii) a cellulose ether-based material functionalized with a hydrophobic substituent, wherein the hydrophobic substituent comprises an alkyl group having 16 carbon atoms bonded to the cellulose ether-based material through at least one of an ether bond (e.g., an ether bond alone, or an ether bond and a 2-hydroxypropyl group) and an ester bond, and the modified carbohydrate polymer comprises 0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of a hydrophobic substituent based on the weight of the cellulose ether-based material.More preferably, the aqueous conditioner formulation of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (ii) a cellulose ether material functionalized with hydrophobic substituents, where the hydrophobic substituent comprises an alkyl group having 16 carbon atoms bonded to the water-soluble cellulose ether material through at least one of ether bonds (e.g., an ether bond alone, or an ether bond and a 2-hydroxypropyl group) and an ester bond, wherein the modified carbohydrate polymer comprises 0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of hydrophobic substituents based on the weight of the cellulose ether material, wherein the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether material. Most preferably, the personal care composition of the present invention comprises 0.1 to 5% by weight (preferably 0.15 to 2% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of a modified carbohydrate polymer based on the weight of the aqueous conditioner formulation, wherein the modified carbohydrate polymer comprises (ii) a cellulose ether-based material functionalized with hydrophobic substituents, where the hydrophobic substituent comprises an alkyl group having 16 carbon atoms bonded to the water-soluble cellulose ether-based material through an ether bond or at least one of an ether bond and a 2-hydroxypropyl group, wherein the modified carbohydrate polymer comprises 0.005 to 1.5% by weight (preferably 0.1 to 1.1% by weight, more preferably 0.3 to <0.5% by weight, most preferably 0.4 to 0.46% by weight) of hydrophobic substituents based on the weight of the cellulose ether-based material, wherein the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether-based material.

[0020] Preferably, the modified carbohydrate polymer is of formula (III), [ka] In the formula, n is the weight-average molecular weight of the cellulose ether material, M W Determined based on R 4 This is an alkyl group having 16 carbon atoms and C 16 Selected from the group consisting of alkylglycidyl ether residues, each R5 independently has C 1~7 Alkyl alkyl group (preferably C 1~4 A cellulose ether-based material is selected from the group consisting of alkyl groups, more preferably methyl and ethyl groups, most preferably methyl groups), and has a weight-average molecular weight of >1,000,000 daltons (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M W The modified carbohydrate polymer contains, based on the weight of the modified carbohydrate polymer, <0.001% by weight (preferably <0.0001% by weight, more preferably <0.00001% by weight, most preferably less than the detectable limit) of crosslinking units.

[0021] Preferably, the aqueous conditioner for heat-styled hair of the present invention optionally contains a cosmetically acceptable cleansing surfactant, a thickener (e.g., polysaccharides, cellulose polymers), soap, a colorant, a pH adjuster, an antioxidant (e.g., butylated hydroxytoluene), and a emollient (polyoxyethylene glycol (C)). 7~20) Fatty acids, glycerol esters (e.g., PEG-7 glyceryl cocoate, PEG-30 glyceryl cocoate, PEG-12 glyceryl laurate, PEG-20 glyceryl oleate), waxes, foaming agents, emulsifiers (e.g., mixture of PEG-100 stearate and glyceryl stearate), colorants, fragrances, chelating agents (e.g., disodium EDTA, tetrasodium EDTA, citric acid, lactic acid), antimicrobial agents / preservatives (e.g., methylchloroisothiazolinone, phenoxyethanol, methylisothiazolinone, esters of parabenzoic acid, diazolidinyl urea and The product further comprises at least one additional ingredient selected from the group consisting of imidazolidinyl urea (imidazolidinyl urea, benzoic acid, sorbic acid), bleaching agents, lubricants, sensory modifiers, sunscreen additives, vitamins, proteins / amino acids, plant extracts, natural ingredients, bioactives, anti-aging agents, pigments, acids, penetrating agents, antistatic agents, anti-friction agents, anti-dandruff agents, hair waving agents / hair straightening agents, hair styling agents, hair oils, absorbents, hard particles, soft particles, conditioning agents (e.g., guar hydroxypropyltrimonium chloride, PQ-10, PQ-7), slip agents, opacifiers, pearlescent agents, and salts. More preferably, the personal care composition of the present invention further optionally comprises at least one additional component selected from the group consisting of emulsifiers (e.g., a mixture of PEG-100 stearate and glyceryl stearate), antimicrobial agents / preservatives (e.g., methylchloroisothiazolinone, phenoxyethanol, methylisothiazolinone, esters of parabenzoic acid, diazolidinyl urea and imidazolidinyl urea, benzoic acid, sorbic acid), thickeners (e.g., polysaccharides, cellulosic polymers), and chelating agents (e.g., disodium EDTA, tetrasodium EDTA, citric acid, lactic acid). Most preferably, the personal care composition of the present invention further optionally comprises at least one additional component selected from the group consisting of an emulsifier mixture of PEG-100 stearate and glyceryl stearate, a hydroxyethyl cellulose polymer thickener, a cetearyl alcohol emollient, an ethylenediaminetetraacetate tetrasodium chelating agent, and a preservative mixture of phenoxyethanol and methylisothiazolinone.

[0022] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further optionally comprises an emulsifier. More preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further comprises 0.01 to 80% by weight (more preferably 0.1 to 5% by weight, even more preferably 0.5 to 2% by weight, most preferably 0.75 to 1.25% by weight) of an emulsifier based on the weight of the aqueous conditioner formulation. Most preferably, the aqueous conditioner formulation of the present invention further comprises 0.01 to 80% by weight (more preferably 0.1 to 5% by weight, even more preferably 0.5 to 2% by weight, most preferably 0.75 to 1.25% by weight) of an emulsifier based on the weight of the aqueous conditioner formulation, the aqueous conditioner formulation is selected from the group consisting of leave-on hair conditioners and rinse-off hair conditioners, and the emulsifier comprises a mixture of PET-100 stearate and glyceryl stearate.

[0023] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further comprises a thickener, optionally further comprising a thickener. More preferably, the aqueous conditioner formulation further comprises a thickener, which is preferably selected to increase the viscosity of the aqueous conditioner formulation without substantially altering other properties of the personal care composition. Preferably, the aqueous conditioner formulation of the present invention further comprises a thickener, which is preferably selected to increase the viscosity of the personal care composition without substantially altering other properties of the personal care composition, and the thickener accounts for 0 to 5.0% by weight (preferably 0.1 to 5.0% by weight, more preferably 0.2 to 2.5% by weight, most preferably 0.5 to 2.0% by weight) based on the weight of the aqueous conditioner formulation. Preferred thickeners include polysaccharides and cellulosic polymers. Preferably, the thickener is a hydroxyether cellulose polymer.

[0024] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further optionally comprises a chelating agent. More preferably, the aqueous conditioner formulation further comprises 0.001 to 0.75% by weight (preferably 0.03 to 0.25% by weight) of a chelating agent based on the weight of the aqueous conditioner formulation, the chelating agent being selected from the group consisting of ethylenediaminetetraacetic acid (EDTA) disodium, EDTA tetrasodium, citric acid, lactic acid, and mixtures thereof. Most preferably, the aqueous conditioner formulation of the present invention further comprises 0.001 to 0.75% by weight (preferably 0.03 to 0.25% by weight) of a chelating agent based on the weight of the aqueous conditioner formulation, the chelating agent being EDTA tetrasodium.

[0025] Preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further optionally comprises an antimicrobial agent / preservative. More preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further optionally comprises 0.05 to 1.25% by weight (preferably 0.1 to 1% by weight, more preferably 0.25 to 0.75% by weight) of an antimicrobial agent / preservative based on the weight of the aqueous conditioner formulation, the antimicrobial agent / preservative being selected from the group consisting of phenoxyethanol, benzoic acid, benzyl alcohol, sodium benzoate, DMDM ​​hydantoin, 2-ethylhexylglyceryl ether, isothiazolinone (e.g., methylchloroisothiazolinone, methylisothiazolinone) and mixtures thereof. Most preferably, the aqueous conditioner formulation for heat-styled hair of the present invention further optionally comprises 0.05 to 1.25% by weight (preferably 0.1 to 1% by weight, more preferably 0.25 to 0.75% by weight) of an antimicrobial agent / preservative based on the weight of the aqueous conditioner formulation, wherein the antimicrobial agent / preservative is a mixture of phenoxyethanol and isoxazolinone (more preferably, the antimicrobial agent / preservative is a mixture of phenoxyethanol and methylisothiazolinone).

[0026] Preferably, a method for producing an aqueous conditioner formulation for heat-styled hair is to (a) provide a cosmetically acceptable aqueous carrier (preferably water), and (b) select a hair alignment enhancer for improving hair alignment, wherein the hair alignment enhancer is selected to be a modified carbohydrate polymer, and the modified carbohydrate polymer is (i) a trialkylammonium moiety of formula (I) (wherein each R 1 C 1~7 Alkyl alkyl group (preferably C 1~4 (ii) A cellulose ether material functionalized with an alkyl group (more preferably selected from the group consisting of a methyl group and an ethyl group, most preferably a methyl group), wherein the modified carbohydrate polymer has a Kjeldahl nitrogen content, TKN, corrected for ash and volatile substances of 0.75 to 2.5% by weight (preferably 0.8 to 2.2% by weight, more preferably 1.5 to 2.1% by weight, most preferably 1.7 to 1.8% by weight), and (ii) a cellulose ether material functionalized with a hydrophobic substituent, each having 16 carbon atoms, wherein the modified carbohydrate polymer is cellulose Based on the weight of the ether-based material, it contains 0.005 to <0.5 wt% (preferably 0.1 to 0.49 wt%, more preferably 0.3 to 0.48 wt%, most preferably 0.4 to 0.46 wt%) of hydrophobic substituents, the hydrophobic substituents are randomly distributed throughout the main chain of the cellulose ether-based material, and the cellulose ether-based material has a weight-average molecular weight of >1,000,000 daltons (preferably 1,100,000 to 4,000,000 daltons, more preferably 1,200,000 to 2,000,000 daltons, most preferably 1,300,000 to 1,800,000 daltons), M WThe invention comprises (c) selecting a modified carbohydrate polymer having <0.001% by weight (preferably <0.0001% by weight, more preferably <0.00001% by weight, most preferably less than the detectable limit) of crosslinking units based on the weight of the modified carbohydrate polymer, and (d) combining a cosmetically acceptable aqueous carrier with the hair alignment enhancer, wherein the aqueous conditioner formulation contains 0.1 to 5% by weight (preferably 0.15 to 3% by weight, more preferably 0.2 to 1% by weight, most preferably 0.25 to 0.5% by weight) of the hair alignment enhancer based on the weight of the aqueous conditioner formulation.

[0027] Preferably, the method for thermally styling hair according to the present invention comprises providing an aqueous conditioner formulation of the present invention, applying the aqueous conditioner formulation to mammalian hair, optionally rinsing the aqueous conditioner formulation off the hair, and thermally styling the hair (preferably thermally styling the hair with at least one of a hot iron and a heated comb).

[0028] Several embodiments of the present invention will be described in detail in the following examples.

[0029] Comparative Example C1: Hydrophobic Modified Cellulose Ether Material A 1,000 mL four-necked round-bottom flask was filled with cellulose ether material (69.83 g, CELLOSIZE® QP-100 MH hydroxyethylcellulose, available from The Dow Chemical Company), isopropyl alcohol (358.34 g), and deionized water (55.6 g). The flask was fitted with a Claisen adapter connected to a Friedrich condenser, which had a nitrogen inlet connected to a 60 mL pressure-equalizing addition funnel, a rubber septum cap, a stirring paddle connected to an electric motor, and a mineral oil foaming outlet. Next, 1-bromododecane (8.01 g) in isopropyl alcohol (20 g) was added to the addition funnel. The stirring paddle was fitted, and the flask's headspace was purged with a slow, steady flow of nitrogen (one bubble per second) for 1 hour to remove all entrained oxygen. Then, 50% sodium hydroxide aqueous solution (8.08 g) was added dropwise to the flask contents over 2 minutes. After adding a 50% sodium hydroxide solution, the contents of the flask were stirred for 1 hour. Then, 1-bromododecane in isopropyl alcohol solution from an addition funnel was added dropwise to the contents of the flask over 3 minutes. After adding 1-bromododecane in isopropyl alcohol, the contents of the flask were stirred for 20 minutes. Then, heat was applied to the contents of the flask using a heating mantle. The contents of the flask were refluxed under nitrogen while being continuously stirred for 4.5 hours. Then, the contents of the flask were cooled by placing the flask in an ice bath while maintaining a positive nitrogen pressure inside the flask. The contents of the flask were then neutralized by adding glacial acetic acid (6.0 g) using a syringe. The contents of the flask were continuously stirred under nitrogen for 10 minutes. Then, the contents of the flask were vacuum filtered through a large frit metal Buchner funnel to recover the hydrophobically modified cellulose ether material. Next, the recovered hydrophobic modified cellulose ether material was washed in a Buchner funnel by stirring it with a specified washing solvent in the funnel for 5 minutes. Subsequently, the washing solution—deionized water (108g) in isopropyl alcohol (492g); deionized water (60g) in isopropyl alcohol (540g); and then the isopropyl alcohol (600g) for drying was removed under vacuum.To impart cold water dispersibility to the final polymer, a 40% aqueous glyoxal solution (1.44 g) and acetic acid (0.44 g) were added to the final drying wash solution. The hydrophobically modified cellulose ether material of the washed product was then air-dried for a short time and then dried overnight in vacuum at 50°C. The dried hydrophobically modified cellulose ether material of the product was then sieved through a #30 mesh US standard sieve to obtain a grayish-white solid with a volatile matter content of 3.11% and an ash content of 5.43% (as sodium acetate). The viscosity of a 1% solution (corrected for ash and volatile matter) was measured at 25.0°C using a TA Instruments DHR-3 rheometer with a 40 mm, 2.0° stainless steel cone and plate sensor for 6.31 seconds. -1 The measurement was performed and determined to be 11,095 mPa·s.

[0030] Comparative Example C2: Modified Carbohydrate Polymer A 1000 mL four-necked round-bottom flask was filled with a hydrophobic modified cellulose ether material (68.76 g), isopropyl alcohol (505.44 g), and deionized water (90.39 g) prepared according to Comparative Example C1. The flask was fitted with a Claisen adapter connected to a Friedrich condenser having a nitrogen inlet connected to a 60 mL pressure-equalizing addition funnel, a rubber septum cap, a stirring paddle connected to an electric motor, and a mineral oil foaming outlet. Next, a 70% aqueous solution of glycidyltrimethylammonium chloride (48.6 g, available from QUAB Chemicals under trade name QUAB® 151) was added to the addition funnel. The apparatus was slowly purged with nitrogen for 1 hour while stirring the contents of the flask to remove any entrained oxygen. After nitrogen purging was complete, a 25% aqueous solution of sodium hydroxide (7.72 g) was added to the contents of the flask over 2 minutes using a plastic syringe through a ceramic cap while stirring under nitrogen. After stirring for 1 hour, the contents of the addition funnel were added dropwise to the contents of the flask over 3 minutes. The contents of the flask were stirred under nitrogen for 20 minutes. Then, the contents of the flask were heated using a J-KEM controller at a set temperature of 55°C. The contents of the flask were refluxed under nitrogen for 1.5 hours while stirring. Then, the contents of the flask were cooled to room temperature while maintaining a positive nitrogen pressure inside the flask. Next, the contents of the flask were neutralized by adding glacial acetic acid (7.5 g) using a syringe. After stirring for 10 minutes, the cationic hydrophobic modified hydroxyethylcellulose polymer (cationic hmHEC polymer) was recovered from the contents of the flask by vacuum filtration through a metal frit-Buchner funnel. Next, the recovered cationic hmHEC polymer was washed once each in a Buchner funnel with a mixture of isopropyl alcohol (492 g) and deionized water (108 g), a mixture of isopropyl alcohol (540 g) and deionized water (60 g), and a mixture of isopropyl alcohol (600 g), 40% glyoxal (1.32 g), and glacial acetic acid (0.46 g). Then, the cationic hmHEC polymer was briefly air-dried and dried overnight in a vacuum at 50°C.Next, the dried cationic hmHEC polymer was manually grouped using a mortar and pestle and screened through a #30 mesh US standard sieve to obtain 89.67 g of the cationic hmHEC polymer product. The cationic hmHEC polymer product had a volatile matter content of 8.89%, an ash content of 2.62% (as sodium chloride), and a Kjeldahl nitrogen content of 1.92%. The viscosity of a 1% solution (corrected for ash and volatile matter) was measured in 6.31 seconds using a TA Instruments DHR-3 rheometer with a 40 mm, 2.0° stainless steel cone and plate sensor at 25.0°C. -1 The temperature was measured and determined to be 3,150 mPa·s.

[0031] Comparative Examples C3-C6 and Examples 1-6: Cationic hmHEC The cationic hydrophobic modified cellulose ether materials produced in Comparative Examples C3-C6 and Examples 1-6 were prepared using the same process as described above for Comparative Examples C1-C2, by appropriately changing the raw material loads to provide the cationic hydrophobic modified cellulose ether material with (i) trimethylammonium moiety having Kjeldahl nitrogen, TKN, and (ii) hydrophobic substituents having the degree of substitution listed in Table 1. [Table 1]

[0032] Comparative Examples CF1-CF9 and Examples F1-F6: Rinse-off Conditioner Rinse-off conditioner formulations were prepared in each of the Comparative Examples CF1-CF9 and Examples F1-F6 using the rinse-off conditioner formulations listed in Table 2. [Table 2]

[0033] The shampoo formulations were prepared in Comparative Examples CF1-CF9 and Examples F1-F6 using the following process: Deionized water was added to a 250 mL beaker and heated to 70°C with constant stirring. Hydroxyethylcellulose thickener was then added to the beaker and stirring and heating continued until homogeneous thickening occurred. Cetearyl alcohol, PEG-stearate and glyceryl stearate, and the polymers listed in Table 3 were then added to the beaker over 3 minutes. Tetrasodium ethylenediaminetetraacetate was then added to the beaker over 3 minutes, after which the heat source was removed and mixing continued until the temperature of the contents of the beaker was below 40°C. PEG-100 stearate and glyceryl stearate, as well as phenoxyethanol and methylisothiazolinone, were then added to the beaker. The final pH of the product shampoo formulation was then adjusted to pH 5.5 using sodium hydroxide or citric acid as needed, and sufficient water was added to adjust the total weight of the formulation to 100 g. [Table 3]

[0034] Hair Treatment Test Unless otherwise specified, the following hair treatment experiments were conducted using 2g strands of heavily bleached hair purchased from International Hair Importers & Products, Inc. Each experiment was performed three times, and average results were provided. Each strand was first rinsed with tap water for 30 seconds, washed with 9% sodium lauryl sulfate (SLS; 0.2g / g hair) for 30 seconds, rinsed with tap water for 1 minute, treated with the rinse-off conditioner (0.4g / g hair) listed in Tables 4-7 for 1 minute, and rinsed with tap water for 30 seconds. The treated strands were then dried overnight at room temperature before analysis.

[0035] Dry / Wet Combing Dry / wet combing performance was measured using Instron Model 4464 and BlueHill 2 software. See STP PC 045. Dry / wet combing performance was performed using two different lots of hair, and the results for the different lots are provided in separate tables. The results are provided in Tables 4-5. [Table 4] [Table 5]

[0036] Damage reduction The reduction in breakage performance was measured using a repeatedly combing device. 10,000 comb strokes; speed: 20 cycles / min (80 comb strokes / hair strand / min). The reduction rate was calculated from the weight difference of treated hair strands before and after combing. The results are shown in Table 6. [Table 6]

[0037] Hair alignment Hair alignment performance was measured using hair of type A curly hair. Treated hair strands were thermally straightened every 10 seconds for a total of 10 passes using a hair straightener applied to each strand at 200°C. Hair alignment and orientation styling were measured using a RUMBA-Bossa Nova, and alignment coefficients were reported for 0, 3, 6, and after 10 passes. Results are provided in Table 7. [Table 7]

Claims

1. 1. An aqueous conditioner formulation for thermally styled hair, comprising: a cosmetically acceptable aqueous carrier; a modified carbohydrate polymer, said modified carbohydrate polymer comprising: (i) a trialkylammonium moiety of formula (I): 【Chemistry 1】 (In the formula, each R １ However, independently C １～７ and (ii) a cellulose ether-based material functionalized with a hydrophobic substituent, each having 16 carbon atoms, wherein the modified carbohydrate polymer comprises 0.005 to 1.5 wt. % of said hydrophobic substituents, based on the weight of the cellulose ether-based material, and wherein the hydrophobic substituents are randomly distributed throughout the backbone of the cellulose ether-based material, and wherein the cellulose ether-based material has a weight average molecular weight, M, of >1,000,000 Daltons. Ｗ wherein the modified carbohydrate polymer comprises <0.001 wt. % crosslinking units based on the weight of the modified carbohydrate polymer.

2. 10. The aqueous conditioner formulation of claim 1 further comprising a thickening agent.

3. 3. The aqueous conditioner formulation of claim 2, wherein the thickening agent is a polysaccharide.

4. 2. The aqueous conditioner formulation of claim 1, wherein the hydrophobic substituent is attached to the cellulose ether-based material through an ether bond or an ether bond and a 2-hydroxypropyl group.

5. 10. The aqueous conditioner formulation of claim 1 further comprising a chelating agent.

6. 10. The aqueous conditioner formulation of claim 1 further comprising a preservative.

7. 10. The aqueous conditioner formulation of claim 1 further comprising an emollient.

8. 10. The aqueous conditioner formulation of claim 1 further comprising a cosmetically acceptable cleansing surfactant.

9. 1. A method for making an aqueous conditioner formulation for thermally styled hair, comprising: (a) providing a cosmetically acceptable aqueous carrier; (b) selecting a hair alignment enhancer for improving hair alignment, wherein the hair alignment enhancer is selected to be a modified carbohydrate polymer, the modified carbohydrate polymer comprising: (i) a trialkylammonium moiety of formula (I) 【Chemistry 2】 (In the formula, each R １ became independent and C １～７ alkyl groups), wherein the modified carbohydrate polymer has an ash and volatile matter corrected Kjeldahl nitrogen content, TKN, of 0.75 to 2.5 wt. %; and (ii) a cellulose ether-based material functionalized with hydrophobic substituents each having 16 carbon atoms, wherein the modified carbohydrate polymer comprises 0.005 to 1.5 wt. % of the hydrophobic substituents, based on the weight of the cellulose ether-based material, and the hydrophobic substituents are randomly distributed throughout the backbone of the cellulose ether-based material; and the cellulose ether-based material has a weight average molecular weight of >1,000,000 Daltons, M Ｗ wherein the modified carbohydrate polymer comprises <0.001 wt. % cross-linking units based on the weight of the modified carbohydrate polymer; (c) providing the selected hair alignment enhancer; (d) combining said cosmetically acceptable aqueous carrier with said hair alignment agent; The method wherein the aqueous conditioner formulation contains 0.1 to 5 wt. % of the hair alignment enhancer, based on the weight of the aqueous conditioner formulation.

10. 1. A method for thermally styling hair, comprising: Providing an aqueous conditioner formulation according to claim 1; applying said aqueous conditioner formulation to mammalian hair; and thermally styling the hair.

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