Hair cosmetic composition

Abstract

To provide a hair cosmetic composition which has a good feel when applied to the hair, can inhibit hair spreading under high humidity conditions and has high stability.SOLUTION: There is provided a hair cosmetic composition which comprises a component (A): one or more polymers selected from the group consisting of a cationic polymer and an amphoteric polymer, a component (B): one or more anionic polymers selected from the group consisting of a polyacrylic acid, a (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer or salts thereof, and a component (C): one or more modified silicones selected from the group consisting of an amino-modified silicone and an amino polyether-modified silicone, wherein the component (B) has a weight average molecular weight of 3000 or more and 50000 or less, the total content of the component (A) and the component (B) is less than 1.0 mass% and the content of the component (C) is 0.03 mass% or more.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a hair cosmetic composition.

Background Art

[0002] Hair cosmetic compositions containing cationic polymers and anionic polymers are known. For example, Patent Document 1 describes that by using a composition for treating keratin substances, which contains at least one anionic polymer and at least one cationic polymer in a solvent medium, anionic polymers can be fixed to keratin substances including, in particular, hair, skin or nails. Further, as the reason for obtaining the above effects, it is assumed that a complex formed by the interaction between the anionic polymer and the cationic polymer is involved.

[0003] Patent Document 2 describes that a hair cosmetic containing a cationic polymer having a charge density in a predetermined range and an anionic polymer containing 80% by mass or more and 100% by mass or less of a predetermined anionic structural unit and having a weight average molecular weight of 4,000 or more and 80,000 or less can improve the feel and appearance of damaged hair and can sustain these effects even after repeated hair washing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described in Patent Document 1, it is known to use a complex formed from a cationic polymer and an anionic polymer (hereinafter also referred to as "polyion complex") as a composition for treating keratin substances, but there is still room for improvement in terms of performance when used as a hair cosmetic composition. For example, in a hair conditioner, which is a type of hair cosmetic composition, it is required that the feel when applied to the hair is good, and that the treated hair does not spread even under high humidity conditions and has excellent moisture resistance. In particular, with regard to suppressing the spread of hair under high humidity conditions, the prior art according to Patent Documents 1 and 2 has not obtained any particular effect. In addition, as a composition containing a polyion complex, there are those in the form of an oil-in-water or water-in-oil emulsion composition, but in these emulsion compositions, improving stability over time has been an issue. Especially in hair cosmetic compositions, a cationic surfactant, a higher alcohol, etc. may be blended in order to improve the feel of the treated hair. However, there has been a problem that when these components are blended into an emulsion composition containing a polyion complex, the stability tends to decrease.

[0006] An object of the present invention is to provide a hair cosmetic composition that has a good feel when applied to the hair, can suppress the spread of hair under high humidity conditions, and has high stability.

Means for Solving the Problems

[0007] The present inventors have found that a hair cosmetic composition containing one or more polymers selected from the group consisting of a cationic polymer and an amphoteric polymer, a predetermined anionic polymer, and a predetermined modified silicone, and in which the total content of the two types of polymers is less than a predetermined value, can solve the above problems. That is, the present invention is Component (A): One or more polymers selected from the group consisting of a cationic polymer and an amphoteric polymer, Component (B): at least one anionic polymer selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or salts thereof, and Component (C): at least one modified silicone selected from the group consisting of amino-modified silicone and amino polyether-modified silicone, The present invention relates to a hair cosmetic composition containing the above components, wherein the weight average molecular weight of the component (B) is 3,000 or more and 50,000 or less, the total content of the component (A) and the component (B) is less than 1.0% by mass, and the content of the component (C) is 0.03% by mass or more.

Effect of the Invention

[0008] According to the present invention, it is possible to provide a hair cosmetic composition having a good feel when applied to hair, capable of suppressing the spreading of hair under high humidity conditions, and having high stability. [[ID=1']]

Mode for Carrying Out the Invention

[0009] [Hair Cosmetic Composition] The hair cosmetic composition of the present invention (hereinafter, also simply referred to as "the composition of the present invention") is Component (A): at least one polymer selected from the group consisting of cationic polymers and amphoteric polymers, Component (B): at least one anionic polymer selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or salts thereof, and Component (C): at least one modified silicone selected from the group consisting of amino-modified silicone and amino polyether-modified silicone, The composition contains the above components, wherein the weight average molecular weight of the component (B) is 3,000 or more and 50,000 or less, the total content of the component (A) and the component (B) is less than 1.0% by mass, and the content of the component (C) is 0.03% by mass or more. Due to having the above configuration, the hair cosmetic composition of the present invention has a good feel when applied to hair, can suppress the spreading of hair under high humidity conditions, and has high stability. In addition, in this specification, "containing component X" also includes blending component X.

[0010] The reason why the hair cosmetic composition of the present invention exhibits the above effects is not clear, but it is considered as follows. The hair cosmetic composition of the present invention contains a polyion complex formed from component (A) and component (B). The polyion complex is an aggregate formed by the chemical electrostatic interaction between component (A) and component (B). The polyion complex is poorly water-soluble, and a hydrophobic film can be formed by applying the hair cosmetic composition containing the polyion complex to the hair. By forming this hydrophobic film, it is considered that the feel during application to the hair is improved and the moisture resistance is improved. Furthermore, it is considered that the effect of suppressing the spreading of hair under high humidity conditions is further improved by component (C) contained in the hair cosmetic composition coating the hair surface. Also, by setting the total content of component (A) and component (B) in the hair cosmetic composition to less than 1.0% by mass, it is considered that the stability is improved even in the form of an emulsified composition containing a polyion complex.

[0011] The form of the hair cosmetic composition of the present invention is preferably an emulsified composition, and more preferably an oil-in-water type emulsified composition from the viewpoints of the stability of the composition and the improvement of the usability. Examples of the product form of the hair cosmetic composition include hair shampoo, hair rinse, hair conditioner, hair treatment (including the type that is not rinsed off), hair styling agent, etc. Among these, from the viewpoint of the effectiveness of the effects of the present invention, a hair conditioner, a hair treatment, or a hair styling agent is preferred. Hereinafter, each component contained in the hair cosmetic composition will be described.

[0012] (Component (A): One or more polymers selected from the group consisting of cationic polymers and amphoteric polymers) Component (A) is one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, which can form a polyion complex by interacting with component (B). The cationic polymer which is component (A) preferably means a polymer having a cationic group and substantially no anionic group and amphoteric group. "Substantially having no anionic group and amphoteric group" means that the molar amounts of the anionic group and amphoteric group relative to the cationic group are preferably 0.1% or less. The amphoteric polymer which is component (A) is preferably a polymer having a cationic group and an anionic group, and the pH of a 1% aqueous solution of the polymer at 25°C is less than 5.1, and the polymer is positively charged as the total charge of the polymer. The pH can be measured with a pH meter. In the present specification, the cationic group is a cationic group or a group that can be ionized to become a cationic group. Specifically, a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium group are exemplified. The anionic group is an anionic group or a group that can be ionized to become an anionic group. Specifically, one or more selected from the group consisting of acidic groups such as a carboxy group, a sulfonic acid group, and a phosphoric acid group are exemplified. Preferably, one or more selected from a carboxy group and a sulfonic acid group are more preferably a carboxy group. At least a part of the anionic group may be neutralized and in a salt state.

[0013] From the perspective of facilitating the formation of a polyion complex through the interaction with component (B), the cationic charge density of component (A) is preferably 0.1 meq / g or more, more preferably 0.5 meq / g or more, still more preferably 1.0 meq / g or more, and even more preferably 2.0 meq / g or more. From the perspective of the stability of the composition, it is preferably 10 meq / g or less, more preferably 8.0 meq / g or less, still more preferably 7.0 meq / g or less. And the cationic charge density of component (A) is preferably from 0.1 meq / g to 10 meq / g, more preferably from 0.5 meq / g to 8.0 meq / g, still more preferably from 1.0 meq / g to 7.0 meq / g, and even more preferably from 2.0 meq / g to 7.0 meq / g. The cationic charge density of component (A) can be calculated from (the number of moles of cationic groups contained per 1 g of the polymer) × 1000 (meq / g). In the hair cosmetic composition, two or more polymers may be used as component (A). In this case, the cationic charge density of component (A) is determined by calculating the weighted average from the cationic charge density and the blending amount of each polymer.

[0014] From the perspectives of the ease of forming a polyion complex, the stability of the composition, the improvement of the feel during application to the hair, and the suppression of the spreading of the hair under high humidity conditions, the weight average molecular weight (Mw) of component (A) is preferably 5,000 or more, more preferably 8,000 or more, and is preferably 2 million or less, more preferably 1.5 million or less. And the weight average molecular weight (Mw) of component (A) is preferably from 5,000 to 2 million, more preferably from 8,000 to 1.5 million. The weight average molecular weight of component (A) can be measured by gel permeation chromatography (GPC).

[0015] Specific examples of the polymer used as component (A) include cationized guar gum, cationized tara gum, cationized locust bean gum, cationic starch, cationized cellulose, cationized hydroxyalkyl cellulose, cationized polyvinyl alcohol, polyethyleneimine, quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, methacryloylethyltrimethylammonium salt polymer, vinylimidazolium trichloride·vinylpyrrolidone copolymer (polyquaternium-16), vinylpyrrolidone·alkylamino (meth)acrylate copolymer, vinylpyrrolidone·alkylamino (meth)acrylate·vinylcaprolactam copolymer, alkylacrylamide·(meth)acrylate·alkylaminoalkylacrylamide·polyethylene glycol (meth)acrylate copolymer, adipic acid·dimethylaminohydroxypropyl ethylene triamine copolymer, etc. One or more of these can be used.

[0016] Among the above, examples of the cationized hydroxyalkyl cellulose include cationized hydroxyethyl cellulose, cationized hydroxypropyl cellulose, etc. Examples of the cationized hydroxyethyl cellulose include, for example, o-[2-hydroxy-3-(trimethylammonio)propyl] hydroxyethyl cellulose (polyquaternium-10). Examples of the quaternized dialkylaminoalkyl (meth)acrylate polymer include vinylpyrrolidone·N,N-dimethylaminoethyl methacrylate diethyl sulfate copolymer (polyquaternium-11), N,N-dimethylaminoethyl methacrylate diethyl sulfate·N,N-dimethylacrylamide·diethylene glycol dimethacrylate copolymer (polyquaternium-52), etc. Examples of the diallyl quaternary ammonium salt polymer include dimethyldiallylammonium chloride polymer (Polyquaternium-6), dimethyldiallylammonium chloride / acrylic acid copolymer (Polyquaternium-22), diallyldimethylammonium chloride / acrylamide copolymer (Polyquaternium-7), acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer (Polyquaternium-39), and the like.

[0017] Examples of the methacrylamidopropyltrimethylammonium salt polymer include methacrylamidopropyltrimethylammonium chloride polymer, vinylpyrrolidone / methacrylamidopropyltrimethylammonium chloride copolymer, acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer (Polyquaternium-47), acrylic acid / acrylamide / methacrylamidopropyltrimethylammonium chloride copolymer (Polyquaternium-53), and the like. Examples of the methacryloylethyltrimethylammonium salt polymer include methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37), methacryloylethyldimethylbetaine / methacryloylethyltrimethylammonium chloride / methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-49), methacryloylethyldimethylbetaine / methacryloylethyltrimethylammonium chloride / 2-hydroxyethyl methacrylate copolymer (Polyquaternium-48), and the like.

[0018] Component (A) can be used alone or in combination of two or more. Among them, from the viewpoints of ease of forming a polyion complex, stability of the composition, improvement of the feel during application to hair, and suppression of hair spreading under high humidity conditions, component (A) is preferably a polymer having at least a cationic group. Component (A) is more preferably at least one selected from the group consisting of quaternized dialkylaminoalkyl (meth) acrylate polymers, diallyl quaternized ammonium salt polymers, methacrylamide propyltrimethylammonium salt polymers, methacryloyl ethyltrimethylammonium salt polymers, and vinylimidazolium trichloride-vinylpyrrolidone copolymers (polyquaternium-16), even more preferably at least one selected from the group consisting of diallyl quaternized ammonium salt polymers, methacrylamide propyltrimethylammonium salt polymers, and vinylimidazolium trichloride-vinylpyrrolidone copolymers (polyquaternium-16), still more preferably at least one selected from the group consisting of dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium acrylate copolymer (polyquaternium-22), acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer (polyquaternium-39), acrylic acid-methyl acrylate-methacrylamidopropyltrimethylammonium chloride copolymer (polyquaternium-47), and vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16), still more preferably at least one selected from the group consisting of dimethyldiallylammonium chloride polymer (polyquaternium-6), acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer (polyquaternium-39), and vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16).

[0019] Among the above, the preferred ranges of the cationic charge density and weight average molecular weight of the following polymers are preferably as follows from the viewpoints of ease of formation of the polyion complex, stability of the composition, improvement of the feel during application to hair, and suppression of hair spreading under high humidity conditions. The cationic charge density of dimethyldiallylammonium chloride polymer (polyquaternium-6) is more preferably 2.0 meq / g or more, more preferably 2.5 meq / g or more, and more preferably 6.5 meq / g or less. The weight average molecular weight is more preferably 10,000 or more and 200,000 or less. The cationic charge density of dimethyldiallylammonium chloride-acrylic acid copolymer (polyquaternium-22) is more preferably 2.0 meq / g or more, more preferably 3.0 meq / g or more, more preferably 4.0 meq / g or more, and more preferably 6.5 meq / g or less, more preferably 6.0 meq / g or less. The weight average molecular weight is more preferably 20,000 or more, more preferably 50,000 or more, more preferably 100,000 or more, more preferably 200,000 or more, more preferably 300,000 or more, and more preferably 1,000,000 or less, more preferably 600,000 or less, more preferably 500,000 or less. The cationic charge density of acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer (polyquaternium-39) is more preferably 2.0 meq / g or more, more preferably 2.5 meq / g or more, and more preferably 6.5 meq / g or less, more preferably 5.0 meq / g or less, more preferably 4.0 meq / g or less. The weight average molecular weight is more preferably 20,000 or more, more preferably 50,000 or more, more preferably 100,000 or more, and more preferably 1,000,000 or less, more preferably 600,000 or less, more preferably 500,000 or less, more preferably 300,000 or less. The cationic charge density of the copolymer of acrylic acid, methyl acrylate, and methacrylamidopropyltrimethylammonium chloride (polyquaternium-47) is more preferably 2.0 meq / g or more, still more preferably 2.5 meq / g or more, still more preferably 6.5 meq / g or less, still more preferably 5.0 meq / g or less, and still more preferably 4.5 meq / g or less. The weight average molecular weight is more preferably 200,000 or more, still more preferably 500,000 or more, still more preferably 1,000,000 or more, preferably 5,000,000 or less, more preferably 3,000,000 or less, and still more preferably 1,500,000 or less. The cationic charge density of the copolymer of vinylimidazolium trichloride and vinylpyrrolidone (polyquaternium-16) is more preferably 2.0 meq / g or more, still more preferably 6.5 meq / g or less, still more preferably 5.0 meq / g or less, and still more preferably 4.5 meq / g or less. The weight average molecular weight is more preferably 20,000 or more, still more preferably 50,000 or more, and still more preferably 150,000 or less.

[0020] As component (A), commercially available polymers can also be used. Specific examples thereof include "MERQUAT 2001 Polymer" (acrylic acid·methyl acrylate·methacrylamidopropyltrimethylammonium chloride copolymer; polyquaternium-47, cationic charge density: 3.21 meq / g, Mw: 1.3 million), "MERQUAT 100" (dimethyl diallyl ammonium chloride polymer; polyquaternium-6, cationic charge density: 6.18 meq / g, Mw: 150,000), "MERQUAT 106" (dimethyl diallyl ammonium chloride polymer; polyquaternium-6, cationic charge density: 6.18 meq / g, Mw: 15,000), "MERQUAT 3940 POLYMER" (acrylamide·acrylic acid·dimethyl diallyl ammonium chloride copolymer solution; polyquaternium-39, cationic charge density: 2.97 meq / g, Mw: 150,000), "MERQUAT 280" (dimethyl diallyl ammonium chloride·acrylic acid copolymer solution; polyquaternium-22, cationic charge density: 4.99 meq / g, Mw: 450,000), "MERQUAT 295" (dimethyl diallyl ammonium chloride·acrylic acid copolymer solution; polyquaternium-22, cationic charge density: 6.04 meq / g, Mw: 190,000), "MERQUAT 2003PR Polymer" (acrylic acid·acrylamide·methacrylamidopropyltrimethylammonium chloride; polyquaternium-53), "MERQUAT 550" (diallyl dimethyl ammonium chloride·acrylamide copolymer: polyquaternium-7), "MERQUAT 740" (diallyl dimethyl ammonium chloride·acrylamide copolymer: polyquaternium-7, cationic charge density: 2.59 meq / g, Mw: 120,000), "Lubikat FC 550" (vinylimidazolium trichloride·vinylpyrrolidone copolymer; polyquaternium-16, cationic charge density: 3.91 meq / g, Mw: 80,000) manufactured by BASF SE, "Lubikat Excellnce" (vinylimidazolium trichloride·vinylpyrrolidone copolymer; polyquaternium-16, cationic charge density: 6.65 meq / g, Mw: 40,000), "Rubikat FC 370" (vinylimidazolium trichloride·vinylpyrrolidone copolymer; polyquaternium-16, cationic charge density: 2.48 meq / g, Mw: 100,000), "Pois C-60H" manufactured by Kao Corporation (vinylimidazolium trichloride·vinylpyrrolidone copolymer; polyquaternium-16, cationic charge density: 1.5 meq / g, Mw: 600,000), "KP Polymer E" manufactured by Kao Corporation (methacryloyl ethyl trimethyl ammonium chloride polymer (polyquaternium-37), cationic charge density: 4.8 meq / g, Mw: 300,000), "Plus Size L-440" and "Plus Size L-440W" manufactured by Gohsei Chemical Industry Co., Ltd. (methacryloyl ethyl dimethyl betaine·methacryloyl ethyl trimethyl ammonium chloride·methacrylic acid methoxypolyethylene glycol copolymer; polyquaternium-49), "Plus Size L-450" and "Plus Size L-450W" (methacryloyl ethyl dimethyl betaine·methacryloyl ethyl trimethyl ammonium chloride·2-hydroxyethyl methacrylate copolymer; polyquaternium-48), etc. can be mentioned.

[0021] (Component (B): Anionic polymer) Component (B) is one or more anionic polymers selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or salts thereof, and is a polymer capable of forming a polyion complex by interaction with component (A). In component (B), at least a part of the carboxy group which is an anionic group may be neutralized and in a salt state.

[0022] From the viewpoint of facilitating the formation of a polyion complex by the interaction with component (A), the anionic charge density of component (B) is preferably 0.1 meq / g or more, more preferably 0.5 meq / g or more, still more preferably 1.0 meq / g or more, and even more preferably 2.0 meq / g or more. From the viewpoint of the stability of the composition, it is preferably 30 meq / g or less, more preferably 20 meq / g or less, still more preferably 15 meq / g or less. And the anionic charge density of component (B) is preferably 0.1 meq / g or more and 30 meq / g or less, more preferably 0.5 meq / g or more and 30 meq / g or less, still more preferably 1.0 meq / g or more and 20 meq / g or less, and even more preferably 2.0 meq / g or more and 15 meq / g or less. The anionic charge density of component (B) can be calculated from (the number of moles of anionic groups contained per 1 g of the polymer) × 1000 (meq / g). When at least a part of the anionic groups of component (B) is in the form of a neutralized salt, the number of moles of the anionic groups shall include the number of moles of the anionic groups in the salt state. The hair cosmetic composition may use two or more polymers as component (B). In this case, the anionic charge density of component (B) is determined by calculating the weighted average from the anionic charge density and the blending amount of each polymer.

[0023] From the viewpoints of the ease of forming a polyion complex, the stability of the composition, the improvement of the feel during application to hair when used as a hair cosmetic composition, and the suppression of the spreading of hair under high humidity conditions, the weight average molecular weight (Mw) of component (B) is 3,000 or more, preferably 5,000 or more, more preferably 10,000 or more, and is 50,000 or less, preferably 40,000 or less, more preferably 30,000 or less. And the weight average molecular weight (Mw) of component (B) is 3,000 or more and 50,000 or less, preferably 5,000 or more and 40,000 or less, more preferably 10,000 or more and 30,000 or less. The weight average molecular weight of component (B) can be measured by gel permeation chromatography (GPC). In addition, from the viewpoints of the ease of forming a polyion complex, the stability of the composition, the improvement of the feel during application to hair, and the suppression of hair spreading under high humidity conditions, the content of the polymer having a molecular weight of 200,000 or more determined from the molecular weight distribution curve in GPC measurement in component (B) is preferably 2% by mass or less, more preferably 1.5% by mass or less, still more preferably 1.5% by mass or less, and even more preferably substantially 0% by mass.

[0024] Examples of the (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer used as component (B) include copolymers of (meth)acrylic acid and a (meth)acrylic acid alkyl ester having an alkyl group with 1 to 24 carbon atoms, preferably 8 to 22 carbon atoms, such as (acrylic acid / octyl acrylate) copolymer and (acrylic acid / stearyl acrylate) copolymer.

[0025] Component (B) can be used alone or in combination of two or more. Among them, from the viewpoints of the ease of forming a polyion complex, the stability of the composition, the improvement of the feel during application to hair, and the suppression of hair spreading under high humidity conditions, component (B) is preferably at least one selected from the group consisting of polyacrylic acid, (acrylic acid / stearyl acrylate) copolymer, or salts thereof.

[0026] Commercially available polymers can also be used as component (B). Specific examples thereof include "Acusol 445G Polymer" (sodium polyacrylate) manufactured by The Dow Chemical Company, "Softcare SA-37W" ((acrylic acid / stearyl acrylate) copolymer) manufactured by Kao Corporation, "Diafold" ((meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer) manufactured by Mitsubishi Chemical Corporation, and the like.

[0027] (Component (C): at least one modified silicone selected from the group consisting of amino-modified silicone and amino polyether-modified silicone) Component (C) is at least one modified silicone selected from the group consisting of amino-modified silicone (hereinafter also referred to as "component (C1)") and amino polyether-modified silicone (hereinafter also referred to as "component (C2)"). By including component (C) in the hair cosmetic composition, it is considered that the effect of suppressing the spreading of hair under high humidity conditions can be further improved.

[0028] <Component (C1): Amino-modified silicone> In this specification, amino-modified silicone means a silicone having an amino group and no polyether structure. Examples of component (C1) include amino-modified silicones represented by the following general formula (I).

Chemical formula

[0029] In general formula (I), R 21 is preferably a methyl group, and R 22 is preferably a methyl group or R 23 . R 23 is a monovalent group represented by -R 24 -Z 1 , and R 24is preferably a divalent hydrocarbon group having 1 to 20 carbon atoms, more preferably an alkylene group having 1 to 20 carbon atoms, still more preferably a linear or branched alkylene group having 1 to 6 carbon atoms, even more preferably a methylene group, an ethylene group, a trimethylene group, a propylene group, a tetramethylene group, or a hexamethylene group, and even more preferably a trimethylene group or a propylene group. Z 1 is a primary to tertiary amino group-containing group or an ammonium group-containing group, and is preferably an amino group-containing group represented by -N(R 25 )2, -NR 25 (CH2) c N(R 26 )2, or -NR 25 (CH2) c N(R 26 )CO-R 27 . Here, R 25 and R 26 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, preferably a hydrogen atom or a methyl group. R 27 represents an alkyl group having 1 to 3 carbon atoms. c represents a number from 1 to 6, preferably a number from 2 to 4.

[0030] In general formula (I), R 23 is preferably -(CH2)3-NH2, -(CH2)3-N(CH3)2, -(CH2)3-NH-(CH2)2-NH2, or -(CH2)2-NH-(CH2)2-N(CH3)2, and more preferably -(CH2)3-NH2 or -(CH2)3-NH-(CH2)2-NH2.

[0031] Examples of the amino-modified silicone represented by general formula (I) include one or more selected from the group consisting of amodimethicone, aminopropyldimethicone, bis(aminopropyl)dimethicone, and bis(stearyl)amodimethicone. More specifically, they are amino-modified silicones represented by any of the following general formulas (Ia) to (Id).

Chemical formula

[0032] The kinematic viscosity of the component (C1) at 25 °C is preferably 20 mm 2 / s or more, more preferably 100 mm 2 / s or more, still more preferably 500 mm 2 / s or more, and preferably 10,000 mm 2 / s or less, more preferably 5,000 mm 2 / s or less, still more preferably 2,000 mm 2 / s or less. And the kinematic viscosity of the component (C1) at 25 °C is preferably 20 mm 2 / s or more and 10,000 mm 2 / s or less, more preferably 100 mm 2 / s or more and 5,000 mm 2 / s or less, still more preferably 500 mm 2 / s or more and 2,000 mm 2 / s or less. The kinematic viscosity of the component (C1) is a value measured at 25 °C in accordance with the "Method for Measuring Viscosity of Liquids" specified in JIS Z8803:2011 or ASTM D 445-46T, and can be measured, for example, using an Ubbelohde viscometer.

[0033] As the component (C1), commercially available amino-modified silicones can also be used. For example, as the amino-modified silicone (amodimethicone) represented by the general formula (Ia), "Silicone SF 8457 C" manufactured by Dow Corning Toray Co., Ltd. etc. can be mentioned.

[0034] <Component (C2): Amino polyether-modified silicone> In this specification, the amino polyether-modified silicone means a silicone having an amino group and a polyether structure. From the viewpoints of the effect of suppressing the spreading of hair under high humidity conditions and availability, the polyether structure in the component (C2) is preferably a polyoxyalkylene group. From the viewpoint of further improving the effect of suppressing the spreading of hair under high humidity conditions, when the number of moles of silicon atoms in the component (C2) is Si and the average number of moles of added alkylene oxide is AO, Si / AO is preferably 0.05 or more, more preferably 0.1 or more, still more preferably 0.3 or more, even more preferably 0.5 or more, even more preferably 0.7 or more, and is preferably 3.0 or less, more preferably 2.8 or less, still more preferably 2.6 or less, even more preferably 2.4 or less. And the Si / AO of the component (C2) is preferably 0.05 or more and 3.0 or less, more preferably 0.1 or more and 2.8 or less, still more preferably 0.3 or more and 2.8 or less, even more preferably 0.5 or more and 2.6 or less, even more preferably 0.7 or more and 2.4 or less. Si / AO is 1 It can be calculated from the integral values of the hydrogen atoms bonded to silicon and the H of the hydrocarbon group and the integral value of the H of the oxyalkylene group measured by H-NMR measurement, and specifically, it can be measured by the method described in the examples.

[0035] Component (C2) preferably has a nitrogen content of 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, and even more preferably 1.0% by mass or more, from the viewpoint of further improving the effect of suppressing the spreading of hair under high humidity conditions, and preferably 2.5% by mass or less, more preferably 2.0% by mass or less, still more preferably 1.8% by mass or less, and even more preferably 1.5% by mass or less. And the nitrogen content of component (C2) is preferably 0.1% by mass or more and 2.5% by mass or less, more preferably 0.2% by mass or more and 2.0% by mass or less, still more preferably 0.5% by mass or more and 1.8% by mass or less, and even more preferably 1.0% by mass or more and 1.5% by mass or less. The nitrogen content of component (C2) is a value measured in accordance with the potentiometric titration method specified in JIS K0113:2005.

[0036] Component (C2) is preferably an aminopolyether-modified silicone represented by the following general formula (II). [Chemical formula] [In formula (II), R 31 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms. R 32 represents either R 31 or E. E represents a monovalent group represented by -R 33 -Z 2 (R 33 represents a single bond or a divalent hydrocarbon group having 1 to 20 carbon atoms, and Z 2 represents a primary to tertiary amino group-containing group or an ammonium group-containing group.). Y represents an alkylene group having 1 to 6 carbon atoms. d represents a number of 2 or more, e represents a number of 1 or more, f represents a number of 2 or more and 100 or less, g represents a number of 1 or more. m represents a number of 2 or more and 10 or less. The bonding order between the structural units in parentheses is not limited, and the bonding form may be block-like or random. The f C m H 2m O may be the same or different. Also, a plurality of R 31 , R 32 , E and Y may be the same or different. ] In addition, when the component (C2) is an aminopolyether-modified silicone represented by the general formula (II), the Si / AO is represented by (d + e + 1) / f.

[0037] In the general formula (II), R 31 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms, preferably a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group, more preferably a methyl group or an ethyl group, and still more preferably a methyl group.

[0038] In the general formula (II), R 32 represents either R 31 or E. E represents a monovalent group represented by -R 33 -Z 2 (R 33 represents a single bond or a divalent hydrocarbon group having 1 to 20 carbon atoms.) R 33 is preferably a divalent hydrocarbon group having 1 to 20 carbon atoms, more preferably an alkylene group having 1 to 20 carbon atoms, still more preferably a linear or branched alkylene group having 1 to 6 carbon atoms, even more preferably a methylene group, an ethylene group, a trimethylene group, a propylene group, a tetramethylene group, or a hexamethylene group, and even more preferably a trimethylene group or a propylene group.

[0039] Z 2 is a primary to tertiary amino group-containing group or an ammonium group-containing group, and is preferably an amino group-containing group represented by -N(R 34 )2, -NR 34 (CH2) h N(R 34 )2, or -NR 34 (CH2) h N(R 35 )CO-R 36 Here, R 34 and R 35 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, preferably a hydrogen atom or a methyl group. R 36represents an alkyl group having 1 to 3 carbon atoms. h represents a number from 1 to 6, preferably a number from 2 to 4.

[0040] In general formula (II), preferred E groups are -(CH2)3-NH2, -(CH2)3-N(CH3)2, -(CH2)3-NH-(CH2)2-NH2, or -(CH2)2-NH-(CH2)2-N(CH3)2, more preferably -(CH2)3-NH-(CH2)2-NH2.

[0041] In general formula (II), Y is an alkylene group having 1 to 6 carbon atoms, preferably an ethylene group, a propylene group, a trimethylene group, an n-butylene group (tetramethylene group) or an i-butylene group, more preferably an n-butylene group or an i-butylene group. The i-butylene group herein includes -CH(CH3)CH2CH2-, -CH2CH(CH3)CH2-, and -CH2CH2CH(CH3)-.

[0042] In general formula (II), d is a number of 2 or more, e is a number of 1 or more, f is a number from 2 to 100, and g is a number of 1 or more. d is preferably a number from 2 to 1000, more preferably a number from 2 to 100. e is preferably a number from 1 to 50, f is preferably a number from 4 to 50, more preferably a number from 10 to 18, and g is preferably a number from 1 to 100.

[0043] In general formula (II), m represents a number from 2 to 10, preferably a number from 2 to 6, more preferably a number from 2 to 4.

[0044] Component (C2) is more preferably an aminopolyether-modified silicone represented by the following general formula (IIa).

Chemical formula

[0045] The kinematic viscosity of component (C2) at 25°C is preferably 5,000 mm 2 / s or more, more preferably 20,000 mm 2 / s or more, still more preferably 40,000 mm 2 / s or more, and preferably 200,000 mm 2 / s or less, more preferably 150,000 mm 2 / s or less, still more preferably 100,000 mm 2 / s or less. And the kinematic viscosity of component (C2) at 25°C is preferably 5,000 mm 2 / s or more and 200,000 mm 2 / s or less, more preferably 20,000 mm 2 / s or more and 150,000 mm 2 / s or less, still more preferably 40,000 mm 2 / s or more and 100,000 mm 2 / s or less. The kinematic viscosity of component (C2) can be measured in the same manner as component (C1).

[0046] As component (C2), commercially available amino polyether-modified silicones can also be used. For example, as the amino polyether-modified silicone represented by the general formula (IIa), "DOWSIL SS-3588 FLUID" manufactured by Dow Corning Toray Co., Ltd. ((bis-isobutyl PEG-15 / ammodimethicone) copolymer, Si / AO = 2.39, nitrogen content: 1.0% by mass, active ingredient content: 71.5% by mass), "DOWSIL SILSTYLE 104" ((bis-isobutyl PEG-14 / ammodimethicone) copolymer, nitrogen content: 1.2% by mass, Si / AO = 2.46), "DOWSIL SILSTYLE 201" ((bis-isobutyl PEG-14 / ammodimethicone) copolymer, nitrogen content: 1.2% by mass, Si / AO = 0.80), etc. can be mentioned.

[0047] One or more kinds of component (C) can be used. Among these, as the component (C), from the viewpoint of further improving the effect of suppressing the spreading of hair under high humidity conditions, it is preferably at least one selected from the group consisting of the amino-modified silicone represented by the general formula (I) and the amino polyether-modified silicone represented by the general formula (II), and more preferably at least one selected from the group consisting of the amino-modified silicone represented by the general formula (Ia) and the amino polyether-modified silicone represented by the general formula (IIa).

[0048] Optional components other than the components (A) to (C) can also be blended in the hair cosmetic composition. From the viewpoints of facilitating the formation of a polyion complex by dispersing the component (A) and the component (B), and obtaining a stable emulsion composition, the hair cosmetic composition preferably further contains an organic acid and water. Further, when the hair cosmetic composition is a hair rinse, a hair conditioner, a hair treatment, or a hair styling agent, from the viewpoint of further improving the feel during application to the hair and the feel of the hair after treatment, it preferably contains at least one selected from the group consisting of a cationic surfactant, a higher alcohol, a non-aromatic polyol, and an oil agent, and more preferably contains all of these.

[0049] (Organic acid) The organic acid contributes to stably forming a polyion complex in the hair cosmetic composition. Examples of the organic acid include carboxylic acid-based compounds and sulfonic acid-based compounds other than the component (B), and preferably compounds having a molecular weight of 500 or less, more preferably 200 or less.

[0050] Examples of carboxylic acid compounds include aliphatic monocarboxylic acids having 4 or fewer carbon atoms such as acetic acid, propionic acid, and butanoic acid; aromatic monocarboxylic acids such as benzoic acid; aliphatic dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, and fumaric acid; aromatic dicarboxylic acids such as phthalic acid and isophthalic acid; polycarboxylic acids such as polyglutamic acid; hydroxycarboxylic acids such as lactic acid, malic acid, glycolic acid, hydroxyacrylic acid, glyceric acid, tartaric acid, and citric acid; acidic amino acids such as glutamic acid and aspartic acid; etc. One or more of these can be used. Examples of sulfonic acid compounds include aliphatic sulfonic acids such as methanesulfonic acid and ethanesulfonic acid; aromatic sulfonic acids such as p-toluenesulfonic acid and naphthalenesulfonic acid; etc. One or more of these can be used.

[0051] From the viewpoint of stably forming a polyion complex to form a highly stable hair cosmetic composition and from the viewpoint of using it in a hair cosmetic composition, the organic acid is preferably at least one selected from the group consisting of aliphatic dicarboxylic acids, hydroxycarboxylic acids, and aromatic sulfonic acids, more preferably at least one selected from the group consisting of succinic acid, lactic acid, malic acid, glycolic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid, still more preferably at least one selected from the group consisting of succinic acid and lactic acid, and even more preferably lactic acid. Note that when the organic acid is blended, at least a part of it may be in the state of an organic acid salt. As the salt of the organic acid, from the viewpoints of using it in a hair cosmetic composition, etc. and availability, an alkali metal salt or alkaline earth metal salt of the organic acid is preferred, an alkali metal salt is more preferred, at least one selected from the group consisting of sodium salts and potassium salts is still more preferred, and a sodium salt is even more preferred. The proportion of the organic acid salt in the total amount of the organic acid and the organic acid salt is preferably 50% by mass or less, more preferably 20% by mass or less, still more preferably 5% by mass or less, and may be 0% by mass, from the viewpoints of the ease of forming the polyion complex, the stability of the composition, the improvement of the feel upon application to the hair, and the suppression of the spreading of the hair under high humidity conditions. The proportion (% by mass) of the organic acid salt referred to herein means the mass % converted to the organic acid.

[0052] (Water) As the water used in the hair cosmetic composition, deionized water or distilled water is preferred. In addition, tap water, groundwater, etc. sterilized with hypochlorous acid or the like may be used as long as the stability of the composition is not impaired.

[0053] (Component (D): Cationic surfactant) From the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, the hair cosmetic composition preferably further contains a cationic surfactant as component (D). Examples of the cationic surfactant include (i) alkyltrimethylammonium salts, (ii) alkoxyalkyltrimethylammonium salts, (iii) dialkyldimethylammonium salts, (iv) alkylamidoalkyltrimethylammonium salts, (v) alkyldimethylamines and their salts, (vi) alkoxyalkyldimethylamines and their salts, and (vii) alkylamidoalkyldimethylamines and their salts.

[0054] Examples of the (i) alkyltrimethylammonium salt preferably include an alkyltrimethylammonium salt having an alkyl group with 12 to 22 carbon atoms, more preferably 16 to 20 carbon atoms, and specifically include cetyltrimethylammonium chloride (cetrimonium chloride), stearyltrimethylammonium chloride (steartrimonium chloride), behenyltrimethylammonium chloride (behentrimonium chloride), etc. (ii) As the alkoxyalkyltrimethylammonium salt, preferably an alkoxyalkyltrimethylammonium salt having an alkoxy group with 12 to 22 carbon atoms, more preferably 16 to 20 carbon atoms, is mentioned. Specifically, stearoxypropyltrimethylammonium chloride, stearoxyethyltrimethylammonium chloride, stearoxyhydroxypropyltrimethylammonium chloride, etc. are mentioned. (iii) As the dialkyldimethylammonium salt, preferably a dialkyldimethylammonium salt having an alkyl group with 12 to 22 carbon atoms, more preferably 16 to 20 carbon atoms, is mentioned. Specifically, distearyldimethylammonium chloride, etc. are mentioned. (iv) As the alkylamidoalkyltrimethylammonium salt, an alkylamidoalkyltrimethylammonium salt in which the alkyl carbon number of the alkylamide part is preferably 11 to 21, more preferably 13 to 19, is mentioned. Specifically, palmitamidopropyltrimethylammonium chloride (palmitamidopropyltrimonium chloride), etc. are mentioned.

[0055] (v) Alkyl dimethylamine, (vi) alkoxyalkyl dimethylamine, and (vii) alkylamidealkyl dimethylamine react with an acid to form a tertiary amine salt and become a cationic surfactant. (v) The alkyl group in alkyl dimethylamine and its salt, and (vi) the alkoxy group in alkoxyalkyl dimethylamine and its salt are preferably 12 to 22 carbon atoms, more preferably 16 to 20 carbon atoms. (vii) The alkyl carbon number of the alkylamide part in alkylamidealkyl dimethylamine and its salt is preferably 11 to 21, more preferably 15 to 19.

[0056] (v) to (vii) amines may be previously reacted with an acid to form a salt and incorporated into the hair cosmetic composition, or may be incorporated into the hair cosmetic composition as amines as they are, and further an acid may be incorporated into the hair cosmetic composition to form a salt in the composition. Therefore, here, the above amines and their salts are defined as cationic surfactants. Also, the content or blending amount is converted in terms of the mass of the above amines. Examples of the salts of the amines of (v) to (vii) include salts with organic acids or inorganic acids. Examples of organic acids include monocarboxylic acids such as acetic acid and propionic acid; dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, and phthalic acid; polycarboxylic acids such as polyglutamic acid; hydroxycarboxylic acids such as glycolic acid, lactic acid, hydroxyacrylic acid, glyceric acid, malic acid, tartaric acid, and citric acid; acidic amino acids such as glutamic acid and aspartic acid. Examples of inorganic acids include hydrochloric acid, sulfuric acid, phosphoric acid, etc. Among these, organic acids are preferred, and one or more selected from the group consisting of dicarboxylic acids, hydroxycarboxylic acids, and acidic amino acids are more preferred. As the dicarboxylic acid, one or more selected from the group consisting of maleic acid and succinic acid are more preferred. As the hydroxycarboxylic acid, one or more selected from the group consisting of glycolic acid, lactic acid, and malic acid are more preferred. As the acidic amino acid, glutamic acid is more preferred.

[0057] Examples of (v) alkyldimethylamines and their salts include N,N-dimethylbehenylamine, N,N-dimethylstearylamine, and their organic acid salts, and the lactate of N,N-dimethylbehenylamine, the glycolate of N,N-dimethylstearylamine, etc. are preferred.

[0058] (vi) Examples of the alkoxyalkyl dimethylamine and its salts include N,N-dimethyl-3-hexadecyloxypropylamine, N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyl dimethylamine), and their organic acid salts. N,N-dimethyl-3-hexadecyloxypropylamine or its lactate, N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyl dimethylamine) or its lactate is preferred.

[0059] (vii) Examples of the alkylamidoalkyl dimethylamine and its salts include N-[3-(dimethylamino)propyl]docosanamide, N-[3-(dimethylamino)propyl]stearamide, and their organic acid salts. The lactate of N-[3-(dimethylamino)propyl]docosanamide and the glycolate of N-[3-(dimethylamino)propyl]stearamide are preferred.

[0060] Component (D) can be used singly or in combination of two or more. Among these, as the component (D), from the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, preferably (i) an alkyltrimethylammonium salt, (ii) an alkoxyalkyltrimethylammonium salt, (iii) a dialkyldimethylammonium salt, (iv) an alkylamidopropyltrimethylammonium salt, (v) an alkyldimethylamine and its salt, (vi) an alkoxyalkyldimethylamine and its salt, and (vii) an alkylamidopropyldimethylamine and its salt, more preferably one or more selected from the group consisting of (i) an alkyltrimethylammonium salt, (ii) an alkoxyalkyltrimethylammonium and (v) an alkyldimethylamine and its salt, still more preferably one or more selected from the group consisting of behenyltrimethylammonium chloride, stearoxypropyltrimethylammonium chloride, stearoxyethyltrimethylammonium chloride, stearoxyhydroxypropyltrimethylammonium chloride, N,N-dimethyl-3-hexadecyloxypropylamine or its lactate, and N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyldimethylamine) or its lactate, even more preferably one or more selected from the group consisting of N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyldimethylamine) or its lactate.

[0061] (Component (E): Higher alcohol) From the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, the hair cosmetic composition preferably further contains a higher alcohol as the component (E). Examples of the higher alcohol include aliphatic monohydric alcohols having 12 or more carbon atoms, preferably 12 to 22 carbon atoms. Examples of the higher alcohol include one or more selected from the group consisting of lauryl alcohol, cetyl alcohol, myristyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, behenyl alcohol, and cetostearyl alcohol. Among them, from the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, it is preferably at least one selected from the group consisting of cetyl alcohol, myristyl alcohol, stearyl alcohol, and behenyl alcohol, and more preferably stearyl alcohol.

[0062] (Component (F): Non-aromatic polyol) From the viewpoints of further improving the feel upon application to the hair and the feel of the hair after treatment, and improving the moisturizing property, the hair cosmetic composition preferably further contains a non-aromatic polyol as component (F). Examples of the non-aromatic polyol used as component (F) include low-molecular diols and triols having 6 or less carbon atoms, such as 1,3-butylene glycol, glycerin, ethylene glycol, propylene glycol, and dipropylene glycol. One or more of these can be used. Among them, from the viewpoints of further improving the feel upon application to the hair and the feel of the hair after treatment, and improving the moisturizing property, it is preferably at least one selected from the group consisting of 1,3-butylene glycol and dipropylene glycol, and more preferably dipropylene glycol.

[0063] (Component (G): Oil agent) From the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, the hair cosmetic composition preferably further contains, as component (G), an oil agent other than component (C) and component (E). Examples of the oil agent include (a) silicone oil, (b) ester oil, (c) ether oil, (d) hydrocarbon oil, (e) higher fatty acid, (f) waxes, etc. One or more of these can be used.

[0064] As (a) silicone oil, at least one selected from the group consisting of dimethylpolysiloxane (dimethicone), dimethiconol (dimethylpolysiloxane having a hydroxy group at the terminal), methylphenylpolysiloxane, and modified silicone other than component (C) is preferable. Examples of modified silicones other than component (C) include polyether-modified silicone, glyceryl-modified silicone, carboxy-modified silicone, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy-modified silicone, fluorine-modified silicone, alkyl-modified silicone, and the like. Among these, from the viewpoint of further improving the feel upon application to hair and the feel of the hair after treatment, (a) as the silicone oil, at least one selected from the group consisting of dimethylpolysiloxane, dimethiconol, methylphenylpolysiloxane, and modified silicones other than component (C) is preferable, at least one selected from the group consisting of dimethylpolysiloxane, dimethiconol, and polyether-modified silicone is more preferable, and dimethylpolysiloxane is even more preferable.

[0065] (b) Examples of the ester oil include synthetic ester oils and natural fats and oils. For example, esters of monocarboxylic acids and monohydric alcohols, esters of monocarboxylic acids and polyhydric alcohols, and esters of polycarboxylic acids and monohydric alcohols can be mentioned.

[0066] Examples of the ester of a monocarboxylic acid and a monohydric alcohol include esters represented by the following general formula (1). R 1 -COO-R 2 (1) In general formula (1), R 1 may be substituted with a hydroxyl group and represents a linear or branched alkyl group or alkenyl group having 1 to 25 carbon atoms, or an aromatic-containing hydrocarbon group having 6 to 24 carbon atoms, and R 2 represents a linear or branched alkyl group or alkenyl group having 1 to 30 carbon atoms.

[0067] R 1 When R is an alkyl group or an alkenyl group, the number of carbon atoms is preferably 7 or more, and preferably 23 or less, more preferably 21 or less, still more preferably 19 or less, and even more preferably 17 or less. R 1When it is an aromatic hydrocarbon group, the number of carbon atoms is preferably 6 or more, and preferably 22 or less, more preferably 20 or less. R 2 The number of carbon atoms of is preferably 2 or more, and preferably 28 or less, more preferably 24 or less, still more preferably 20 or less. Even more preferably, in the general formula (1), R 1 is a linear or branched alkyl group having 7 to 17 carbon atoms, and R 2 is an ester which is a linear or branched alkyl group having 2 to 24 carbon atoms.

[0068] Specific examples of the ester represented by the general formula (1) include cetyl isooctanoate, stearyl isooctanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isostearyl laurate, butyl myristate, isopropyl myristate, decyl myristate, isotridecyl myristate, isocetyl myristate, isostearyl myristate, 2-octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, isostearyl palmitate, 2-hexyldecyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isopropyl isostearate, 2-hexyldecyl isostearate, ethyl oleate, isodecyl oleate, oleyl oleate, octyldodecyl oleate, ethyl linoleate, isopropyl linoleate, lanolin acetate, methyl castor oil fatty acid (methyl ricinoleate), and alkyl benzoate (alkyl having 12 to 15 carbon atoms). One or more selected from the group consisting of these are mentioned.

[0069] As the ester of a monocarboxylic acid and a monohydric alcohol, an ester represented by the following general formula (2) is also mentioned. R 3 -COO-(AO) n -R 4 (2) In the general formula (2), R 3represents a linear or branched alkyl or alkenyl group having 1 to 25 carbon atoms, which may be substituted with a hydroxyl group, and R 4 represents an aromatic-containing hydrocarbon group having 6 to 24 carbon atoms. AO represents an alkyleneoxy group having 2 to 4 carbon atoms, and n represents an average addition mole number of 1 to 50. R 3 is preferably an alkyl group having 7 or more carbon atoms, and preferably 23 or less, more preferably 21 or less, still more preferably 19 or less carbon atoms. R 4 is preferably an aromatic-containing hydrocarbon group having 6 or more carbon atoms, and preferably 22 or less, more preferably 20 or less, still more preferably 18 or less carbon atoms, and even more preferably a benzyl group. The AO group is preferably a propyleneoxy group, and n is preferably 1 to 10, more preferably 1 to 5. Specific examples of the ester represented by the general formula (2) include an ester of myristic acid and a 3-mole adduct of propylene oxide with benzyl alcohol ("Crodamol STS" manufactured by Croda), an ester of 2-ethylhexanoic acid and a 3-mole adduct of propylene oxide with benzyl alcohol ("Crodamol SFX" manufactured by Croda), and the like.

[0070] Examples of the ester of a monovalent carboxylic acid and a polyhydric alcohol include an ester represented by the following general formula (3). R 5 -(OCOR 6 ) p (3) In the general formula (3), R 5 represents a polyhydric alcohol residue, preferably a hydrocarbon group having 2 to 10 carbon atoms, and R 6 represents a monovalent carboxylic acid residue having 1 to 25 carbon atoms, and p represents an integer of 2 to 10. Note that R 5 may have an ether bond, but is preferably a linear or branched hydrocarbon group having 2 to 10 carbon atoms. Also, p is the same number as the number of hydroxyl groups of the polyhydric alcohol. R 6is preferably an alkyl group having 7 or more carbon atoms, and from the same viewpoint as described above, preferably 23 or less, more preferably 21 or less, and still more preferably 19 or less carbon atoms. Even more preferably, in the general formula (3), R 5 is a glycerin residue or a pentaerythritol residue, and R 6 is an ester which is an alkyl group having 7 or more and 19 or less carbon atoms.

[0071] Specific examples of the ester represented by the general formula (3) include propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol di(2-ethylhexanoate), propane diol di(caprylic acid / capric acid), propane diol diisostearate, ethylene glycol di(2-ethylhexanoate), glyceryl tri(caprylic acid / capric acid), glyceryl tri(2-ethylhexanoate), glyceryl tri(2-heptylundecanoate), trimethylolpropane tri(2-ethylhexanoate), trimethylolpropane triisostearate, pentaerythritol tetra(2-ethylhexanoate), and natural fats and oils. Examples of the natural fats and oils include triglycerides such as avocado oil, olive oil, sesame oil, rice bran oil, safflower oil, soybean oil, corn oil, rapeseed oil, castor oil, cottonseed oil, and mink oil.

[0072] Examples of the ester of a polyvalent carboxylic acid and a monohydric alcohol also include the ester represented by the following general formula (4). R 7 -(COOR 8 ) q (4) In the general formula (4), R 7 is a polyvalent carboxylic acid residue having 2 or more and 10 or less carbon atoms, R 8 represents a monohydric alcohol residue having 1 or more and 24 or less carbon atoms, and q is an integer of 2 or more and less than 10. Also, q is the same number as the carboxy group of the polyvalent carboxylic acid. R 8It is preferably 3 or more carbon atoms, more preferably 6 or more carbon atoms, and from the same viewpoint as above, it is preferably 22 or less, more preferably 20 or less, and even more preferably 18 or less. Even more preferably, in general formula (4), R 7 is a trimellitic acid residue, and R 8 is an ester that is a branched alkyl group having 6 to 18 carbon atoms.

[0073] Specific examples of the ester represented by general formula (4) include diisostearyl malate, di-2-ethylhexyl succinate, diisobutyl adipate, di-2-heptylundecyl adipate, di-2-ethylhexyl sebacate, diisopropyl sebacate, tri-2-ethylhexyl trimellitate, and the like.

[0074] Among these, from the viewpoint of further improving the feel when applied to the hair and the feel of the hair after treatment, it is preferably an ester of a monocarboxylic acid and a monohydric alcohol represented by general formula (1), an ester of a monocarboxylic acid and a polyhydric alcohol represented by general formula (3), or an ester of a polycarboxylic acid and a monohydric alcohol represented by general formula (4). More preferably, in general formula (1), R 1 is a linear or branched alkyl group having 7 to 17 carbon atoms, and R 2 is an ester that is a linear or branched alkyl group having 2 to 24 carbon atoms. In general formula (3), R 5 is a glycerin residue, and R 6 is an ester that is an alkyl group having 7 to 19 carbon atoms. And in general formula (4), R 7 is a trimellitic acid residue, and R 8 is one or more selected from the group consisting of esters that are branched alkyl groups having 6 to 18 carbon atoms.

[0075] (c) Examples of the ether oil include a dialkyl ether compound represented by the following general formula (5) or a polyoxyalkylene alkyl ether compound represented by the following general formula (6). R 9 -O-R10 (5) In general formula (5), R 9 and R 10 each independently represent a linear or branched alkyl or alkenyl group having 6 to 22 carbon atoms, or an aromatic hydrocarbon group having 6 to 24 carbon atoms. R 9 and R 10 are preferably alkyl groups from the viewpoint of further improving the feel upon application to hair and the feel of the hair after treatment. The number of carbon atoms thereof is preferably 8 or more, preferably 18 or less, more preferably 16 or less, and still more preferably 12 or less.

[0076] R 11 -O-(PO)r(EO)s-H (6) In general formula (6), R 11 represents an alkyl or alkenyl group having 6 to 22 carbon atoms, PO represents a propyleneoxy group, and EO represents an ethyleneoxy group. r represents an average addition mole number of 0.1 or more and 15 or less, and s represents an average addition mole number of 0 or more and 10 or less. When s is not 0, the addition form of PO and EO may be random or block. R 11 The number of carbon atoms of is preferably 8 or more, and preferably 20 or less, more preferably 18 or less, and still more preferably 12 or less. From the viewpoint of further improving the feel upon application to hair and the feel of the hair after treatment, the average addition mole number r is preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, and preferably 13 or less, more preferably 10 or less. The average addition mole number s is preferably 5 or less, more preferably 1 or less, and still more preferably 0. As the polyoxyalkylene alkyl ether compound represented by general formula (6), one or more selected from the group consisting of polypropylene glycol, polyoxypropylene octyl ether, polyoxypropylene decyl ether, and polyoxypropylene lauryl ether, in which the average addition mole number r of the propyleneoxy group is 3 or more and 10 or less, are preferable.

[0077] (d) Examples of the hydrocarbon oil include squalene, squalane, liquid paraffin, liquid isoparaffin, isohexadecane, isoeicosane, hydrogenated polyisobutene, light liquid isoparaffin, heavy liquid isoparaffin, α-olefin oligomer, cycloparaffin, and the like.

[0078] (e) Examples of the higher fatty acid include fatty acids having 8 or more carbon atoms, preferably 12 or more carbon atoms, such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, coconut oil fatty acid, lanolin fatty acid, isostearic acid, isopalmitic acid, and the like.

[0079] (f) Examples of the waxes include beeswax, spermaceti, lanolin, carnauba wax, and the like.

[0080] As the oil agent which is component (G), one or more of the above can be used. Among the above, from the viewpoint of further improving the feel when applied to the hair and the feel of the hair after treatment, it is preferably one or more selected from the group consisting of (a) silicone oil, (b) ester oil, (d) hydrocarbon oil, and (e) higher fatty acid, more preferably one or more selected from the group consisting of (a) silicone oil and (e) higher fatty acid, still more preferably one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, methylphenylpolysiloxane, modified silicone other than component (C), and fatty acid having 12 or more carbon atoms, even more preferably one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, polyether-modified silicone, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, coconut oil fatty acid, lanolin fatty acid, isostearic acid, and isopalmitic acid, even more preferably one or more selected from the group consisting of dimethylpolysiloxane and lanolin fatty acid, and even more preferably consisting of dimethylpolysiloxane and lanolin fatty acid.

[0081] (Content) The content or blending amount of each component in the hair cosmetic composition is preferably as follows from the viewpoints of the stability of the composition, the improvement of the feel during application to the hair, and the suppression of the spreading of the hair under high humidity conditions.

[0082] The content of component (A) in the hair cosmetic composition is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and still more preferably 0.03% by mass or more from the viewpoints of the ease of forming a polyion complex, the improvement of the feel during application to the hair, and the suppression of the spreading of the hair under high humidity conditions. Further, from the viewpoint of improving the emulsified state, it is preferably less than 0.50% by mass, more preferably 0.30% by mass or less, and still more preferably 0.20% by mass or less. And the content of component (A) in the hair cosmetic composition is preferably 0.01% by mass or more and less than 0.50% by mass, more preferably 0.02% by mass or more and 0.30% by mass or less, and still more preferably 0.03% by mass or more and 0.20% by mass or less.

[0083] The content of component (B) in the hair cosmetic composition is preferably 0.01% by mass or more, more preferably 0.015% by mass or more from the viewpoints of the ease of forming a polyion complex, the improvement of the feel during application to the hair, and the suppression of the spreading of the hair under high humidity conditions. Further, from the viewpoint of improving the emulsified state, it is preferably less than 0.50% by mass, more preferably 0.30% by mass or less, still more preferably 0.20% by mass or less, and even more preferably 0.10% by mass or less. And the content of component (B) in the hair cosmetic composition is preferably 0.01% by mass or more and less than 0.50% by mass, more preferably 0.01% by mass or more and 0.30% by mass or less, still more preferably 0.01% by mass or more and 0.20% by mass or less, and even more preferably 0.015% by mass or more and 0.10% by mass or less.

[0084] From the perspective of the stability of the composition, the total content of component (A) and component (B) in the hair cosmetic composition is less than 1.0% by mass, preferably 0.9% by mass or less, more preferably 0.5% by mass or less, and still more preferably 0.3% by mass or less. Also, from the perspective of improving the emulsified state and suppressing the spreading of hair under high humidity conditions, it is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and still more preferably 0.05% by mass or more. And the total content of component (A) and component (B) in the hair cosmetic composition is less than 1.0% by mass, preferably 0.01% by mass or more and 0.9% by mass or less, more preferably 0.03% by mass or more and 0.9% by mass or less, still more preferably 0.05% by mass or more and 0.9% by mass or less, even more preferably 0.05% by mass or more and 0.5% by mass or less, and even more preferably 0.05% by mass or more and 0.3% by mass or less.

[0085] From the perspective of improving the emulsified state and the feel during application to the hair, the ratio of the number of moles of the cationic charge of component (A) to the number of moles of the anionic charge of component (B) in the hair cosmetic composition is preferably 5 / 95 to 95 / 5, more preferably 10 / 90 to 90 / 10, still more preferably 20 / 80 to 80 / 20, even more preferably 20 / 80 to 60 / 40, and even more preferably 40 / 60 to 60 / 40.

[0086] From the perspective of improving the feel during application to the hair and suppressing the spreading of hair under high humidity conditions, the content of component (C) in the hair cosmetic composition is 0.03% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more. Also, from the perspective of improving the emulsified state, it is preferably 5.0% by mass or less, more preferably 2.0% by mass or less, still more preferably 1.0% by mass or less, and even more preferably 0.5% by mass or less. And the content of component (C) in the hair cosmetic composition is 0.03% by mass or more, preferably 0.03% by mass or more and 5.0% by mass or less, more preferably 0.05% by mass or more and 5.0% by mass or less, still more preferably 0.05% by mass or more and 2.0% by mass or less, even more preferably 0.1% by mass or more and 1.0% by mass or less, and even more preferably 0.1% by mass or more and 0.5% by mass or less.

[0087] From the viewpoint of improving the feel during application to hair and suppressing the spreading of hair under high humidity conditions, the mass ratio of the total content of components (A) and (B) to the content of component (C) in the hair cosmetic composition [{(A)+(B)} / (C)] is preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.10 or more, and even more preferably 0.20 or more. Also, from the viewpoint of improving the emulsified state, it is preferably 5.0 or less, more preferably 3.0 or less, still more preferably 2.0 or less, and even more preferably 1.5 or less. And the mass ratio of the total content of components (A) and (B) to the content of component (C) in the hair cosmetic composition [{(A)+(B)} / (C)] is preferably 0.01 or more and 5.0 or less, more preferably 0.05 or more and 3.0 or less, still more preferably 0.10 or more and 2.0 or less, and even more preferably 0.20 or more and 1.5 or less.

[0088] When using an organic acid, the content of the organic acid in the hair cosmetic composition is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more, from the viewpoint of facilitating the formation of a polyion complex. Also, from the viewpoints of facilitating the formation of a polyion complex and improving the stability of the composition, it is preferably 5.0% by mass or less, more preferably 3.0% by mass or less, still more preferably 2.0% by mass or less, and even more preferably 1.5% by mass or less. And the content of the organic acid in the hair cosmetic composition is preferably 0.01% by mass or more and 5.0% by mass or less, more preferably 0.02% by mass or more and 3.0% by mass or less, still more preferably 0.03% by mass or more and 3.0% by mass or less, even more preferably 0.05% by mass or more and 3.0% by mass or less, even more preferably 0.1% by mass or more and 2.0% by mass or less, even more preferably 0.1% by mass or more and 1.5% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, and even more preferably 0.3% by mass or more and 1.5% by mass or less. However, when the hair cosmetic composition contains any of (v) alkyldimethylamine and its salts, (vi) alkoxyalkyldimethylamine and its salts, and (vii) alkylamidopropyldimethylamine and its salts as component (D), the content of the organic acid in the hair cosmetic composition may be in an amount exceeding 5.0% by mass. This is because the organic acid exists as a counter anion of the above amines, which is expected to improve the stability of the hair cosmetic composition and the feel during application to the hair.

[0089] When the organic acid is blended in the state of an organic acid salt, the above content is the amount converted to the organic acid.

[0090] From the viewpoints of the ease of forming a polyion complex and improving the emulsified state, the water content in the hair cosmetic composition is preferably 10% by mass or more, more preferably 20% by mass or more, still more preferably 30% by mass or more. Also, from the viewpoints of the stability of the composition and the degree of freedom of formulation, it is preferably 99% by mass or less, more preferably 95% by mass or less, still more preferably 92% by mass or less. Then, the water content in the hair cosmetic composition is preferably 10% by mass or more and 99% by mass or less, more preferably 20% by mass or more and 95% by mass or less, still more preferably 30% by mass or more and 92% by mass or less.

[0091] When using a cationic surfactant as component (D), from the viewpoint of further improving the feel during application to the hair and the feel of the hair after treatment, the content of component (D) in the hair cosmetic composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more. Also, from the viewpoint of the stability of the composition, it is preferably 10% by mass or less, more preferably 5.0% by mass or less, still more preferably 3.5% by mass or less. Then, the content of component (D) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 5.0% by mass or less, still more preferably 0.5% by mass or more and 3.5% by mass or less, even more preferably 1.0% by mass or more and 3.5% by mass or less.

[0092] Component (E): When using a higher alcohol, the content of Component (E) in the hair cosmetic composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, and even more preferably 1.0% by mass or more from the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment. Also, from the viewpoint of the stability of the composition, it is preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 10% by mass or less. And the content of Component (E) in the hair cosmetic composition is preferably 0.1% by mass or more and 15% by mass or less, more preferably 0.2% by mass or more and 12% by mass or less, still more preferably 0.5% by mass or more and 12% by mass or less, and even more preferably 1.0% by mass or more and 10% by mass or less.

[0093] Component (F): When using a non-aromatic polyol, the content of Component (F) in the hair cosmetic composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, and even more preferably 1.0% by mass or more from the viewpoints of further improving the feel upon application to the hair and the feel of the hair after treatment and improving the moisturizing property. Also, from the viewpoint of the stability of the composition, it is preferably 10% by mass or less, more preferably 5.0% by mass or less, still more preferably 3.0% by mass or less. And the content of Component (F) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 10% by mass or less, still more preferably 0.5% by mass or more and 5.0% by mass or less, and even more preferably 1.0% by mass or more and 3.0% by mass or less.

[0094] Component (G): When using an oil agent, from the viewpoint of further improving the feel upon application to the hair and the feel of the hair after treatment, the content of Component (G) in the hair cosmetic composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, and even more preferably 1.0% by mass or more. Also, from the viewpoint of improving the usability of the composition, it is preferably 10% by mass or less, more preferably 5.0% by mass or less, and still more preferably 3.0% by mass or less. And the content of Component (G) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 5.0% by mass or less, still more preferably 0.5% by mass or more and 5.0% by mass or less, and even more preferably 1.0% by mass or more and 3.0% by mass or less.

[0095] In addition, in the hair cosmetic composition, as optional components, anionic surfactants, nonionic surfactants, amphoteric surfactants, aromatic alcohols, antioxidants, anti-dandruff agents, vitamin agents, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizing agents, pearl agents, ceramides, fragrances, plant extracts, ultraviolet absorbers, pH adjusters, etc. can be blended.

[0096] (pH) From the viewpoint of improving the feel when the hair cosmetic composition is applied to the hair, the pH of a 5% aqueous solution of the hair cosmetic composition at 25°C is preferably 2.0 or more, more preferably 3.0 or more, and is preferably 10.0 or less, more preferably 7.0 or less, and still more preferably 5.0 or less. And the pH of a 5% aqueous solution of the hair cosmetic composition at 25°C is preferably 2.0 or more and 10.0 or less, more preferably 3.0 or more and 7.0 or less, and still more preferably 3.0 or more and 5.0 or less. The above pH can be measured using a pH meter at 25°C by adding water to the hair cosmetic composition to make a 5% aqueous solution.

[0097] (Method for producing a hair cosmetic composition) The method for producing the hair cosmetic composition is not particularly limited. However, when the hair cosmetic composition is an emulsion composition, from the viewpoint of having a good feel when applied to the hair, being able to suppress the spreading of the hair under high humidity conditions, and being able to produce a highly stable hair cosmetic composition, it is preferably produced by a method having the following step (1) and either of the following steps (2-1) or (2-2). Step (1): A step of preparing a mixture A containing component (A), component (B), an organic acid, and water Step (2-1): A step of mixing the mixture A and an oil phase component containing an emulsion-forming component to prepare an emulsion (I) Step (2-2): A step of mixing an oil phase component containing an emulsion-forming component and an aqueous phase component other than the mixture A to prepare an emulsion (II), and then mixing the mixture A In the present specification, the "emulsion-forming component" means an oily component for forming an emulsion contained in the emulsion composition. In the present specification, the "aqueous phase component" means a component constituting the aqueous phase in the production process of the emulsion composition, and the "oil phase component" means a component constituting the oil phase in the production process of the emulsion composition.

[0098] Component (C) may be mixed in any step other than step (1). From the viewpoint of preparing a highly stable emulsion composition, component (C) is preferably mixed after step (2-1) or after step (2-2). More preferably, after preparing the emulsion (I) in step (2-1), the emulsion (I) and component (C) are mixed, or in step (2-2), component (C) is mixed after mixing the emulsion (II) and the mixture A.

[0099] <Step (1): Step of preparing mixture A> In step (1), the component (A), component (B), the organic acid, and water are mixed to prepare a mixture A (aqueous phase component) containing component (A), component (B), the organic acid, and water. By performing step (1), a mixture A containing a polyion complex formed from component (A) and component (B) is obtained.

[0100] In the preparation of mixture A, there are no particular restrictions on the mixing order of component (A), component (B), the organic acid, and water. For example, component (A), component (B), and the organic acid may be added to water simultaneously and mixed. From the perspective of the ease of forming the polyion complex and the perspective of forming a more homogeneous polyion complex in water, it is preferable to first add component (A) and the organic acid to water and mix them, and then add component (B) and mix. The temperature during mixing in step (1) is not particularly limited. However, from the perspective of improving the dispersibility of component (A) and component (B) and the ease of forming the polyion complex, it is preferably 40°C or higher, more preferably 45°C or higher, still more preferably 50°C or higher. From the perspective of suppressing the thermal degradation of the compounding components, it is preferably 90°C or lower, more preferably 80°C or lower, still more preferably 70°C or lower, and even more preferably 65°C or lower. And the temperature during mixing in step (1) is preferably 40°C or higher and 90°C or lower, more preferably 45°C or higher and 80°C or lower, still more preferably 50°C or higher and 70°C or lower, and even more preferably 50°C or higher and 65°C or lower.

[0101] The mixing time in step (1) is not particularly limited. However, from the perspective of improving the emulsification state, it is preferably 1 minute or longer, more preferably 3 minutes or longer. From the perspective of productivity, it is preferably 1 hour or shorter.

[0102] The mixing in step (1) can be carried out using a known emulsifier or stirring device such as a high-pressure emulsifier, ultrasonic emulsifier, homomixer, etc.

[0103] The mixture A obtained in step (1) may be a transparent solution, but is preferably in the form of a suspension. In the mixture A in the form of a suspension, it is considered that the polyion complex formed from component (A) and component (B) is not solubilized and precipitates in the solution and is uniformly dispersed. When the mixture A in the form of a suspension is used in step (2-1) or (2-2), a stable polyion complex state is maintained in the resulting emulsion composition, and it is considered that the stability of the emulsion composition, the feel during application to the hair, and the effect of suppressing the spreading of the hair under high humidity conditions are further improved.

[0104] From the viewpoints of the ease of forming the polyion complex, improving the feel during application of the resulting composition to the hair, and suppressing the spreading of the hair under high humidity conditions, the blending amount of component (A) in the mixture A is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, in 100% by mass of the total amount of the mixture A. Further, from the viewpoint of improving the emulsified state, it is preferably less than 10% by mass, more preferably less than 5% by mass, still more preferably less than 1% by mass, and even more preferably less than 0.5% by mass. And the blending amount of component (A) in the mixture A is preferably 0.01% by mass or more and less than 10% by mass, more preferably 0.03% by mass or more and less than 5% by mass, still more preferably 0.03% by mass or more and less than 1% by mass, and even more preferably 0.05% by mass or more and less than 0.5% by mass, in 100% by mass of the total amount of the mixture A.

[0105] From the viewpoints of the ease of forming a polyion complex, the improvement of the feel upon application of the resulting composition to the hair, and the suppression of the spreading of the hair under high humidity conditions, the blending amount of component (B) in mixture A is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, based on 100% by mass of the total amount of mixture A. Further, from the viewpoint of improving the emulsified state, it is preferably less than 5% by mass, more preferably less than 3% by mass, still more preferably less than 1% by mass, and even more preferably less than 0.3% by mass. And the blending amount of component (B) in mixture A is preferably 0.01% by mass or more and less than 5% by mass, more preferably 0.01% by mass or more and less than 3% by mass, still more preferably 0.02% by mass or more and less than 1% by mass, and even more preferably 0.05% by mass or more and less than 0.3% by mass, based on 100% by mass of the total amount of mixture A.

[0106] From the viewpoint of the ease of forming a polyion complex, the blending amount of the organic acid in mixture A is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, based on 100% by mass of the total amount of mixture A. Further, from the viewpoint of facilitating the preparation of the suspension state of mixture A, it is preferably less than 10% by mass, more preferably less than 5% by mass, still more preferably less than 1% by mass, even more preferably less than 0.75% by mass, and even more preferably less than 0.30% by mass. And the blending amount of the organic acid in mixture A is preferably 0.01% by mass or more and less than 10% by mass, more preferably 0.01% by mass or more and less than 5% by mass, still more preferably 0.03% by mass or more and less than 1% by mass, even more preferably 0.05% by mass or more and less than 0.75% by mass, and even more preferably 0.05% by mass or more and less than 0.30% by mass, based on 100% by mass of the total amount of mixture A. Incidentally, the amount of the organic acid used in the preparation of mixture A in step (1) may be a part of the organic acid contained in the resulting composition.

[0107] In mixture A, the mass ratio of the total blending amount of component (A) and component (B) to the blending amount of the organic acid [(A + B) / organic acid] is preferably in the range of 1 / 0.1 to 1 / 20, more preferably 1 / 0.1 to 1 / 15, still more preferably 1 / 0.20 to 1 / 10, even more preferably 1 / 0.20 to 1 / 8, and even more preferably 1 / 0.22 to 1 / 4, from the viewpoints of facilitating the preparation of the suspension-like mixture A, improving the feel during application to the hair, and suppressing the spreading of the hair under high humidity conditions.

[0108] The blending amount of water in mixture A is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, and even more preferably 80% by mass or more, and preferably 99.97% by mass or less, preferably 99.8% by mass or less, in 100% by mass of the total amount of mixture A, from the viewpoints of facilitating the formation of the polyion complex and improving the emulsified state. And the blending amount of water in mixture A is preferably 50% by mass or more and 99.97% by mass or less, more preferably 50% by mass or more and 99.8% by mass or less, still more preferably 60% by mass or more and 99.8% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, and even more preferably 80% by mass or more and 99.8% by mass or less, in 100% by mass of the total amount of mixture A. Note that the amount of water used for the preparation of mixture A in step (1) may be a part of the water contained in the resulting composition.

[0109] Mixture A may contain components other than component (A), component (B), the organic acid, and water. However, from the viewpoints of facilitating the formation of the polyion complex, improving the emulsified state, and the stability of the composition, the total content of component (A), component (B), the organic acid, and water in mixture A is preferably 70% by mass or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, and even more preferably 95% by mass or more, and is 100% by mass or less.

[0110] In step (1), from the viewpoint of more uniformly dispersing the polyion complex in mixture A, the pH of mixture A at 25°C is preferably 1.5 or higher, more preferably 2.0 or higher, and is preferably 4.0 or lower, more preferably 3.2 or lower, still more preferably 3.0 or lower. And the pH of mixture A at 25°C is preferably 1.5 or higher and 4.0 or lower, more preferably 2.0 or higher and 4.0 or lower, still more preferably 2.0 or higher and 3.2 or lower, even more preferably 2.0 or higher and 3.0 or lower. The pH of mixture A at 25°C can be measured using a pH meter.

[0111] <Step (2)> When the hair cosmetic composition is an emulsion composition, the method for producing the hair cosmetic composition preferably has either of the following steps (2-1) or (2-2) after step (1). Thereby, a highly stable emulsion composition containing the polyion complex obtained in step (1) can be produced. Step (2-1): A step of mixing the mixture A and an oil phase component containing an emulsion-forming component to prepare an emulsion (I). Step (2-2): A step of mixing an oil phase component containing an emulsion-forming component and an aqueous phase component other than the mixture A to prepare an emulsion (II), and then mixing the mixture A.

[0112] (Step (2-1)) In step (2-1), first, the mixture A obtained in step (1) and an oil phase component containing an emulsion-forming component are mixed to prepare an emulsion (I). Next, it is preferable to mix an oil phase component containing component (C). Further, an aqueous phase component other than the mixture A can be mixed as needed. The mixing ratio of the mixture A and the oil phase component containing an emulsion-forming component may be adjusted and mixed so that the total blending amount of component (A) and component (B) in the resulting emulsion composition falls within a predetermined range, and is not particularly limited. The "oil phase component containing an emulsion-forming component" preferably contains, as the emulsion-forming component, component (D): a cationic surfactant and component (E): a higher alcohol, and may further contain component (F): a non-aromatic polyol. In the oil phase component containing an emulsion-forming component used in step (2-1), the content of the emulsion-forming component is preferably 30% by mass or more, more preferably 50% by mass or more, still more preferably 70% by mass or more, and 100% by mass or less from the viewpoint of stably forming an emulsion. The "oil phase component containing component (C)" is an oil phase component containing component (C) and not containing an emulsion-forming component, and may further contain component (G): an oil agent in addition to component (C). Examples of the "aqueous phase component other than mixture A" include the balance of the organic acid and water, and component (F) (non-aromatic polyol).

[0113] The temperature at the time of mixing mixture A and the oil phase component containing an emulsion-forming component in step (2-1) is not particularly limited, but from the viewpoint of the stability of the resulting composition, it is preferably 40°C or higher, more preferably 45°C or higher, still more preferably 50°C or higher, and from the viewpoint of suppressing thermal degradation of the compounding components, it is preferably 90°C or lower, more preferably 80°C or lower. And the temperature at the time of mixing mixture A and the oil phase component containing an emulsion-forming component in step (2-1) is preferably 40°C or higher and 90°C or lower, more preferably 45°C or higher and 90°C or lower, still more preferably 50°C or higher and 80°C or lower. The mixing time of mixture A and the oil phase component containing an emulsion-forming component in step (2-1) is not particularly limited, but from the viewpoint of improving the emulsified state, it is preferably 1 minute or more, more preferably 3 minutes or more, and from the viewpoint of productivity, it is preferably 1 hour or less.

[0114] Next, the obtained emulsion (I) is mixed with the above-mentioned oil phase component containing component (C) and, if necessary, the aqueous phase component (other components) other than mixture A. The emulsion (I), the oil phase component containing component (C), and the aqueous phase component other than mixture A may be mixed together, or may be divided into a plurality of times and one may be added to the other and mixed.

[0115] The temperature at the time of mixing the emulsion (I) with the oil phase component containing the component (C) and the aqueous phase component other than the mixture A is not particularly limited. However, from the viewpoint of improving the feel when applying the resulting composition to the hair and from the viewpoint of improving the stability of the emulsion composition, it is preferably 40°C or higher, more preferably 45°C or higher, still more preferably 50°C or higher. From the viewpoint of suppressing thermal degradation of the compounding components, it is preferably 90°C or lower, more preferably 80°C or lower, still more preferably 70°C or lower. When heating is performed during the preparation of the emulsion (I), it is preferable to mix the emulsion (I) and other components while performing a cooling step. The cooling step can be performed by a known method such as air cooling. The mixing time of the emulsion (I) and other components is also not particularly limited, preferably 5 minutes or longer, more preferably 10 minutes or longer. From the viewpoint of productivity, it is preferably 12 hours or shorter, more preferably 5 hours or shorter, still more preferably 1 hour or shorter.

[0116] (Step (2-2)) In step (2-2), first, an oil phase component containing an emulsion-forming component is mixed with an aqueous phase component other than the mixture A to prepare an emulsion (II). Next, the emulsion (II) and the mixture A are mixed. The "oil phase component containing an emulsion-forming component" and the "aqueous phase component other than the mixture A" mentioned here are the same as those in step (2-1). The aqueous phase component other than the mixture A used for the preparation of the emulsion (II) does not need to be the total amount of the aqueous phase component used in step (2-2), and at least a part thereof may be sufficient. The aqueous phase component other than the mixture A used for the preparation of the emulsion (II) is preferably water.

[0117] In step (2-2), the temperature at the time of mixing the oil-phase component containing the emulsion-forming component and the water-phase component other than mixture A is not particularly limited. However, from the viewpoint of improving the feel when the resulting composition is applied to hair and from the viewpoint of improving the stability of the emulsion composition, it is preferably 40°C or higher, more preferably 45°C or higher, still more preferably 50°C or higher, and from the viewpoint of suppressing thermal degradation of the compounding components, it is preferably 90°C or lower, more preferably 80°C or lower. And the temperature at the time of mixing the oil-phase component containing the emulsion-forming component and the water-phase component other than mixture A in step (2-2) is preferably 40°C or higher and 90°C or lower, more preferably 45°C or higher and 90°C or lower, still more preferably 50°C or higher and 80°C or lower. The mixing time is also not particularly limited, but from the viewpoint of preparing the emulsion, it is preferably 1 minute or longer, more preferably 3 minutes or longer, and from the viewpoint of productivity, it is preferably 1 hour or shorter.

[0118] Next, the obtained emulsion (II) and mixture A are mixed. The mixing ratio of mixture A and emulsion (II) may be adjusted and mixed so that the total blending amount of component (A) and component (B) in the resulting emulsion composition falls within a predetermined range, and is not particularly limited. Emulsion (II) and mixture A may be mixed all at once, or divided into a plurality of times and one may be added to the other and mixed. Also, simultaneously with the mixing of emulsion (II) and mixture A, or before or after such mixing (preferably after the mixing of emulsion (II) and mixture A), an oil-phase component containing component (C) is mixed. Further, if necessary, the remaining amount of the water-phase component can be added and mixed.

[0119] The temperature at the time of mixing emulsion (II) and mixture A is not particularly limited. However, from the viewpoint of the stability of the resulting emulsion composition, it is preferably 50°C or lower, more preferably 45°C or lower, and preferably 10°C or higher, more preferably 20°C or higher. And the temperature at the time of mixing emulsion (II) and mixture A is preferably 10°C or higher and 50°C or lower, more preferably 20°C or higher and 45°C or lower. The mixing time of emulsion (II) and mixture A is also not particularly limited, and is preferably 1 minute or longer, more preferably 3 minutes or longer, and from the viewpoint of productivity, it is preferably 1 hour or shorter.

[0120] Each mixing step in step (2-1) and step (2-2) can be carried out using the same apparatus as in step (1). From the viewpoint of making the emulsified state better, the production method of the hair cosmetic composition preferably includes step (1) and step (2-1).

[0121] Regarding the above-described embodiments, the present invention further discloses the following. <1> Component (A): at least one polymer selected from the group consisting of a cationic polymer and an amphoteric polymer Component (B): at least one anionic polymer selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or a salt thereof, and Component (C): at least one modified silicone selected from the group consisting of an amino-modified silicone and an amino polyether-modified silicone containing the weight average molecular weight of the component (B) is 3,000 or more and 50,000 or less, the total content of the component (A) and the component (B) is less than 1.0% by mass, a hair cosmetic composition in which the content of the component (C) is 0.03% by mass or more. <2> Component (A): at least one polymer selected from the group consisting of dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium chloride / acrylic acid copolymer (polyquaternium-22), acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer (polyquaternium-39), and acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer (polyquaternium-47) Component (B): at least one anionic polymer selected from the group consisting of polyacrylic acid, (acrylic acid / stearyl acrylate) copolymer, or a salt thereof Component (C): one or more modified silicones selected from the group consisting of amino-modified silicone and amino polyether-modified silicone, containing The weight average molecular weight of the component (B) is 3,000 or more and 50,000 or less, and the total content of the component (A) and the component (B) is 0.05% by mass or more and 0.3% by mass or less, A hair cosmetic composition in which the content of the component (C) is 0.1% by mass or more and 1.0% by mass or less. <3> The hair cosmetic composition according to <1>, wherein the cationic polymer is a polymer having a cationic group and substantially no anionic group and amphoteric group. <4> The hair cosmetic composition according to <1> or <3>, wherein the cationic polymer has a cationic group, and the molar amount of the anionic group and the amphoteric group relative to the cationic group is preferably 0.1% or less. <5> The hair cosmetic composition according to any one of <1>, <3>, <4>, wherein the amphoteric polymer is preferably a polymer having a cationic group and an anionic group, the pH of a 1% aqueous solution of the polymer at 25 ° C is less than 5.1, and the polymer is positively charged as the total charge of the polymer. <6> The cationic charge density of the component (A) is preferably 0.1 meq / g or more and 10 meq / g or less, more preferably 0.5 meq / g or more and 8.0 meq / g or less, still more preferably 1.0 meq / g or more and 7.0 meq / g or less, and even more preferably 2.0 meq / g or more and 7.0 meq / g or less. The hair cosmetic composition according to any one of <1> to <5>. <7> The weight average molecular weight of the component (A) is preferably 5,000 or more and 2,000,000 or less, more preferably 8,000 or more and 1,500,000 or less. The hair cosmetic composition according to any one of <1> to <6>. <8> The component (A) is preferably at least one selected from the group consisting of cationized guar gum, cationized tara gum, cationized locust bean gum, cationic starch, cationized cellulose, cationized hydroxyalkyl cellulose, cationized polyvinyl alcohol, polyethyleneimine, quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, methacryloyl ethyltrimethylammonium salt polymer, vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16), vinylpyrrolidone-alkylamino (meth)acrylate copolymer, vinylpyrrolidone-alkylamino (meth)acrylate-vinylcaprolactam copolymer, alkylacrylamide-(meth)acrylate-alkylaminoalkylacrylamide-polyethylene glycol (meth)acrylate copolymer, and adipic acid-dimethylaminohydroxypropyl ethylene triamine copolymer; more preferably, at least one selected from the group consisting of quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, methacryloyl ethyltrimethylammonium salt polymer, and vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16); still more preferably, at least one selected from the group consisting of diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, and vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16); even more preferably, at least one selected from the group consisting of dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium chloride-acrylic acid copolymer (polyquaternium-22), acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer (polyquaternium-39), acrylic acid-methyl acrylate-methacrylamide propyltrimethylammonium chloride copolymer (polyquaternium-47), and vinylimidazolium trichloride-vinylpyrrolidone copolymer (polyquaternium-16) of <1>.The hair cosmetic composition according to any one of <3> to <7>. <9> The hair cosmetic composition according to any one of <1> to <8>, wherein the component (A) is more preferably at least one selected from the group consisting of dimethyldiallylammonium chloride polymer (polyquaternium-6), acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer (polyquaternium-39), and vinylimidazolium trichloride / vinylpyrrolidone copolymer (polyquaternium-16). <10> The hair cosmetic composition according to any one of <2>, <8>, and <9>, wherein the cationic charge density of the dimethyldiallylammonium chloride polymer (polyquaternium-6) is more preferably 2.0 meq / g or more, more preferably 2.5 meq / g or more, more preferably 6.5 meq / g or less, and the weight average molecular weight is more preferably 10,000 or more and 200,000 or less.

[0122] <11> The hair cosmetic composition according to <2> or <8>, wherein the cationic charge density of the dimethyldiallylammonium chloride / acrylic acid copolymer (polyquaternium-22) is more preferably 2.0 meq / g or more, more preferably 3.0 meq / g or more, more preferably 4.0 meq / g or more, more preferably 6.5 meq / g or less, more preferably 6.0 meq / g or less, and the weight average molecular weight is more preferably 20,000 or more, more preferably 50,000 or more, more preferably 100,000 or more, more preferably 200,000 or more, more preferably 300,000 or more, more preferably 1,000,000 or less, more preferably 600,000 or less, more preferably 500,000 or less. <12> The cationic charge density of the acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer (polyquaternium-39) is more preferably 2.0 meq / g or more, more preferably 2.5 meq / g or more, more preferably 6.5 meq / g or less, more preferably 5.0 meq / g or less, and more preferably 4.0 meq / g or less. The weight average molecular weight is more preferably 20,000 or more, more preferably 50,000 or more, more preferably 100,000 or more, more preferably 1,000,000 or less, more preferably 600,000 or less, more preferably 500,000 or less, and more preferably 300,000 or less. The hair cosmetic composition according to any one of <2>, <8>, and <9>. <13> The cationic charge density of the acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer (polyquaternium-47) is more preferably 2.0 meq / g or more, more preferably 2.5 meq / g or more, more preferably 6.5 meq / g or less, more preferably 5.0 meq / g or less, and more preferably 4.5 meq / g or less. The weight average molecular weight is more preferably 200,000 or more, more preferably 500,000 or more, more preferably 1,000,000 or more, preferably 5,000,000 or less, more preferably 3,000,000 or less, and more preferably 1,500,000 or less. The hair cosmetic composition according to <2> or <8>. <14> The cationic charge density of the vinylimidazolium trichloride / vinylpyrrolidone copolymer (polyquaternium-16) is more preferably 2.0 meq / g or more, more preferably 6.5 meq / g or less, more preferably 5.0 meq / g or less, and more preferably 4.5 meq / g or less. The weight average molecular weight is more preferably 20,000 or more, more preferably 50,000 or more, and more preferably 150,000 or less. The hair cosmetic composition according to any one of <2>, <8>, and <9>. <15> The anionic charge density of the component (B) is preferably 0.1 meq / g or more and 30 meq / g or less, more preferably 0.5 meq / g or more and 30 meq / g or less, still more preferably 1.0 meq / g or more and 20 meq / g or less, and even more preferably 2.0 meq / g or more and 15 meq / g or less, and the hair cosmetic composition according to any one of <1> to <14>. <16> The weight average molecular weight of the component (B) is preferably 5,000 or more and 40,000 or less, more preferably 10,000 or more and 30,000 or less, and the hair cosmetic composition according to any one of <1> to <15>. <17> The component (B) is preferably at least one selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or salts thereof, and even more preferably at least one selected from the group consisting of polyacrylic acid, (acrylic acid / stearyl acrylate) copolymer, or salts thereof, and the hair cosmetic composition according to any one of <1>, <3> to <16>.

[0123] <18> The amino-modified silicone is an amino-modified silicone represented by the following general formula (I), and the hair cosmetic composition according to any one of <1> to <17>.

Chemical formula

Chem.

[0124] <28> The total content of component (A) and component (B) in the hair cosmetic composition is preferably 0.01% by mass or more and 0.9% by mass or less, more preferably 0.03% by mass or more and 0.9% by mass or less, still more preferably 0.05% by mass or more and 0.9% by mass or less, even more preferably 0.05% by mass or more and 0.5% by mass or less, even more preferably 0.05% by mass or more and 0.3% by mass or less, the hair cosmetic composition according to any one of <1>, <3> to <27>. <29> The ratio of the number of moles of the cationic charge of component (A) to the number of moles of the anionic charge of component (B) in the hair cosmetic composition is preferably 5 / 95 to 95 / 5, more preferably 10 / 90 to 90 / 10, still more preferably 20 / 80 to 80 / 20, even more preferably 20 / 80 to 60 / 40, even more preferably 40 / 60 to 60 / 40, the hair cosmetic composition according to any one of <1> to <28>. <30> The content of component (C) in the hair cosmetic composition is preferably 0.03% by mass or more and 5.0% by mass or less, more preferably 0.05% by mass or more and 5.0% by mass or less, still more preferably 0.05% by mass or more and 2.0% by mass or less, even more preferably 0.1% by mass or more and 1.0% by mass or less, and even more preferably 0.1% by mass or more and 0.5% by mass or less. The hair cosmetic composition according to any one of <1>, <3> to <29>. <31> The mass ratio [{(A)+(B)} / (C)] of the total content of component (A) and component (B) to the content of component (C) in the hair cosmetic composition is preferably 0.01 or more and 5.0 or less, more preferably 0.05 or more and 3.0 or less, still more preferably 0.10 or more and 2.0 or less, and even more preferably 0.20 or more and 1.5 or less. The hair cosmetic composition according to any one of <1> to <30>. <32> The hair cosmetic composition according to any one of <1> to <31>, further containing an organic acid. <33> The hair cosmetic composition according to <32>, wherein the organic acid is at least one selected from the group consisting of carboxylic acid compounds and sulfonic acid compounds other than component (B). <34> The hair cosmetic composition according to <32> or <33>, wherein the organic acid is preferably a compound having a molecular weight of 500 or less, more preferably 200 or less. <35> The organic acid is preferably at least one selected from the group consisting of aliphatic dicarboxylic acids, hydroxycarboxylic acids, and aromatic sulfonic acids, more preferably at least one selected from the group consisting of succinic acid, lactic acid, malic acid, glycolic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid, still more preferably at least one selected from the group consisting of succinic acid and lactic acid, and even more preferably lactic acid. The hair cosmetic composition according to any one of <32> to <34>. <36> The content of the organic acid in the hair cosmetic composition is preferably 0.01% by mass or more and 5.0% by mass or less, more preferably 0.02% by mass or more and 3.0% by mass or less, still more preferably 0.03% by mass or more and 3.0% by mass or less, even more preferably 0.05% by mass or more and 3.0% by mass or less, even more preferably 0.1% by mass or more and 2.0% by mass or less, even more preferably 0.1% by mass or more and 1.5% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably 0.3% by mass or more and 1.5% by mass or less. The hair cosmetic composition according to any one of <32> to <35>. <37> The hair cosmetic composition according to any one of <1> to <36>, further containing water.

[0125] <38> The content of water in the hair cosmetic composition is preferably 10% by mass or more and 99% by mass or less, more preferably 20% by mass or more and 95% by mass or less, still more preferably 30% by mass or more and 92% by mass or less. The hair cosmetic composition according to <37>. <39> The hair cosmetic composition according to any one of <1> to <38>, further containing a cationic surfactant as component (D). <40> Component (D) is preferably at least one selected from the group consisting of (i) alkyltrimethylammonium salts, (ii) alkoxyalkyltrimethylammonium salts, (iii) dialkyldimethylammonium salts, (iv) alkylamidoalkyltrimethylammonium salts, (v) alkyldimethylamines and their salts, (vi) alkoxyalkyldimethylamines and their salts, and (vii) alkylamidoalkyldimethylamines and their salts; more preferably at least one selected from the group consisting of (i) alkyltrimethylammonium salts, (ii) alkoxyalkyltrimethylammonium salts, and (v) alkyldimethylamines and their salts; still more preferably at least one selected from the group consisting of behenyltrimethylammonium chloride, stearoxypropyltrimethylammonium chloride, stearoxyethyltrimethylammonium chloride, stearoxyhydroxypropyltrimethylammonium chloride, N,N-dimethyl-3-hexadecyloxypropylamine or its lactate, and N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyldimethylamine) or its lactate; even more preferably at least one selected from the group consisting of N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyldimethylamine) or its lactate, the hair cosmetic composition according to <39>. <41> The content of component (D) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 5.0% by mass or less, still more preferably 0.5% by mass or more and 3.5% by mass or less, even more preferably 1.0% by mass or more and 3.5% by mass or less, the hair cosmetic composition according to <39> or <40>. <42> The hair cosmetic composition according to any one of <1> to <41> further contains a higher alcohol as component (E). <43> The hair cosmetic composition according to <42>, wherein the component (E) is at least one selected from the group consisting of aliphatic monohydric alcohols having 12 or more carbon atoms, preferably 12 to 22 carbon atoms, more preferably lauryl alcohol, cetyl alcohol, myristyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, behenyl alcohol, and cetostearyl alcohol, still more preferably at least one selected from the group consisting of cetyl alcohol, myristyl alcohol, stearyl alcohol, and behenyl alcohol, and even more preferably stearyl alcohol. <44> The hair cosmetic composition according to <42> or <43>, wherein the content of the component (E) in the hair cosmetic composition is preferably 0.1% by mass or more and 15% by mass or less, more preferably 0.2% by mass or more and 12% by mass or less, still more preferably 0.5% by mass or more and 12% by mass or less, and even more preferably 1.0% by mass or more and 10% by mass or less. <45> The hair cosmetic composition according to any one of <1> to <44>, further containing a non-aromatic polyol as the component (F). <46> The hair cosmetic composition according to <45>, wherein the component (F) is at least one selected from the group consisting of 1,3-butylene glycol, glycerin, ethylene glycol, propylene glycol, and dipropylene glycol, preferably at least one selected from the group consisting of 1,3-butylene glycol and dipropylene glycol, and more preferably dipropylene glycol. <47> The hair cosmetic composition according to <45> or <46>, wherein the content of the component (F) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 10% by mass or less, still more preferably 0.5% by mass or more and 5.0% by mass or less, and even more preferably 1.0% by mass or more and 3.0% by mass or less.

[0126] <48> Furthermore, as component (G), the hair cosmetic composition according to any one of <1> to <47>, which contains an oil agent other than component (C). <49> Said component (G) is one or more selected from the group consisting of (a) silicone oil, (b) ester oil, (c) ether oil, (d) hydrocarbon oil, (e) higher fatty acid, and (f) waxes, preferably one or more selected from the group consisting of (a) silicone oil, (b) ester oil, (d) hydrocarbon oil, and (e) higher fatty acid, more preferably one or more selected from the group consisting of (a) silicone oil and (e) higher fatty acid, still more preferably one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, methylphenylpolysiloxane, modified silicone other than component (C), and fatty acids having 12 or more carbon atoms, even more preferably one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, polyether-modified silicone, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, coconut oil fatty acid, lanolin fatty acid, isostearic acid, and isopalmitic acid, and even more preferably one or more selected from the group consisting of dimethylpolysiloxane and lanolin fatty acid, and even more preferably the hair cosmetic composition according to <48>, which consists of dimethylpolysiloxane and lanolin fatty acid. <50> The content of component (G) in the hair cosmetic composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 5.0% by mass or less, still more preferably 0.5% by mass or more and 5.0% by mass or less, and even more preferably 1.0% by mass or more and 3.0% by mass or less, the hair cosmetic composition according to <48> or <49>. <51> The pH of a 5% aqueous solution of the hair cosmetic composition at 25°C is preferably 2.0 or more and 10.0 or less, more preferably 3.0 or more and 7.0 or less, still more preferably 3.0 or more and 5.0 or less, the hair cosmetic composition according to any one of <1> to <50>. <52> The method for producing the hair cosmetic composition according to any one of <1> to <51>, comprising the following step (1) and either of the following steps (2-1) or (2-2). Step (1): Preparing a mixture A containing component (A), component (B), an organic acid, and water Step (2-1): Mixing the mixture A and an oil phase component containing an emulsion-forming component to prepare an emulsion (I) Step (2-2): Mixing an oil phase component containing an emulsion-forming component and an aqueous phase component other than the mixture A to prepare an emulsion (II), and then mixing the mixture A <53> The production method according to <52>, wherein the emulsion-forming component preferably contains an ionic surfactant and an amphiphilic substance having a hydrophobic group, and more preferably contains component (D): a cationic surfactant and component (E): a higher alcohol. <54> The production method according to <52> or <53>, wherein the component (C) is preferably mixed after step (2-1) or after step (2-2), and more preferably, after preparing the emulsion (I) in step (2-1), the emulsion (I) and component (C) are mixed, or in step (2-2), component (C) is mixed after mixing the emulsion (II) and the mixture A. <55> The production method according to any one of <52> to <54>, wherein the temperature during mixing in step (1) is preferably 40°C or higher and 90°C or lower, more preferably 45°C or higher and 80°C or lower, still more preferably 50°C or higher and 70°C or lower, and even more preferably 50°C or higher and 65°C or lower. <56> The production method according to any one of <52> to <55>, wherein the mixing time in step (1) is preferably 1 minute or longer, more preferably 3 minutes or longer, and preferably 1 hour or shorter. <57> The production method according to any one of <52> to <56>, wherein the mixture A obtained in step (1) is in a suspension state.

[0127] <58> The blending amount of component (A) in the mixture A is preferably 0.01% by mass or more and less than 10% by mass, more preferably 0.03% by mass or more and less than 5% by mass, still more preferably 0.03% by mass or more and less than 1% by mass, and even more preferably 0.05% by mass or more and less than 0.5% by mass, based on 100% by mass of the total amount of the mixture A. The production method according to any one of <52> to <57>. <59> The blending amount of component (B) in the mixture A is preferably 0.01% by mass or more and less than 5% by mass, more preferably 0.01% by mass or more and less than 3% by mass, still more preferably 0.02% by mass or more and less than 1% by mass, and even more preferably 0.05% by mass or more and less than 0.3% by mass, based on 100% by mass of the total amount of the mixture A. The production method according to any one of <52> to <58>. <60> The blending amount of the organic acid in the mixture A is preferably 0.01% by mass or more and less than 10% by mass, more preferably 0.01% by mass or more and less than 5% by mass, still more preferably 0.03% by mass or more and less than 1% by mass, and even more preferably 0.05% by mass or more and less than 0.75% by mass, and even more preferably 0.05% by mass or more and less than 0.30% by mass, based on 100% by mass of the total amount of the mixture A. The production method according to any one of <52> to <59>. <61> In the mixture A, the mass ratio [(A + B) / organic acid] of the total blending amount of component (A) and component (B) to the blending amount of the organic acid is preferably in the range of 1 / 0.1 to 1 / 20, more preferably 1 / 0.1 to 1 / 15, still more preferably 1 / 0.20 to 1 / 10, even more preferably 1 / 0.20 to 1 / 8, and even more preferably 1 / 0.22 to 1 / 4. The production method according to any one of <52> to <60>. <62> The blending amount of water in the mixture A is preferably 50% by mass or more and 99.97% by mass or less, more preferably 50% by mass or more and 99.8% by mass or less, still more preferably 60% by mass or more and 99.8% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, and even more preferably 80% by mass or more and 99.8% by mass or less, based on 100% by mass of the total amount of the mixture A. The production method according to any one of <52> to <61>. <63> The total content of component (A), component (B), the organic acid and water in the mixture A is preferably 70% by mass or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, and even more preferably 95% by mass or more, and 100% by mass or less. The production method according to any one of <52> to <62>. <64> The pH of the mixture A at 25 °C is preferably 1.5 or more and 4.0 or less, more preferably 2.0 or more and 4.0 or less, still more preferably 2.0 or more and 3.2 or less, and even more preferably 2.0 or more and 3.0 or less. The production method according to any one of <52> to <63>. <65> The temperature at the time of mixing the mixture A and the oil phase component containing the emulsion-forming component in the step (2-1) is preferably 40 °C or more and 90 °C or less, more preferably 45 °C or more and 90 °C or less, still more preferably 50 °C or more and 80 °C or less. The production method according to any one of <52> to <64>. <66> The mixing time of the mixture A and the oil phase component containing the emulsion-forming component in the step (2-1) is preferably 1 minute or more, more preferably 3 minutes or more, and preferably 1 hour or less. The production method according to any one of <52> to <65>. <67> The temperature at the time of mixing the oil phase component containing the emulsion-forming component and the aqueous phase component other than the mixture A in the step (2-2) is preferably 40 °C or more and 90 °C or less, more preferably 45 °C or more and 90 °C or less, still more preferably 50 °C or more and 80 °C or less. The production method according to any one of <52> to <66>.

[0128] <68> In the step (2-2), the mixing time of the oil phase component containing the emulsion-forming component and the aqueous phase component other than the mixture A is preferably 1 minute or more, more preferably 3 minutes or more, and preferably 1 hour or less. The production method according to any one of <52> to <67>. <69> In the step (2-2), the temperature during the mixing of the emulsion (II) and the mixture A is preferably 10°C or higher and 50°C or lower, more preferably 24°C or higher and 45°C or lower. The production method according to any one of <52> to <68>. <70> In the step (2-2), the mixing time of the emulsion (II) and the mixture A is preferably 1 minute or more, more preferably 3 minutes or more, and preferably 1 hour or less. The production method according to any one of <52> to <69>. <71> The method for producing the hair cosmetic composition has steps (1) and (2-1). The production method according to any one of <52> to <70>.

Examples

[0129] Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to the scope of the examples. Each measurement and evaluation in the examples was carried out by the following methods.

[0130] (pH measurement) Water was added to the hair cosmetic composition (hair conditioner) of each example to make a 5% aqueous solution, and the pH at 25°C was measured using a pH meter (F-51, manufactured by Horiba, Ltd.). The pH of all of them was 3.4.

[0131] (Measurement of Si / AO in component (C2)) 10 mg of component (C2) (aminopolyether-modified silicone) was weighed into a No. 3 screw vial and dried overnight under a nitrogen atmosphere. 1 ml of deuterated chloroform (manufactured by FUJIFILM Wako Pure Chemical Corporation: chloroform-d, 99.8%) was added to the obtained dried product and dissolved. 1The unit ratio of Si / AO was calculated using the following formula from the integral values of the dimethylsilyl group (6H: -0.3 to 0.3 ppm) bonded to silicon and the integral values of the oxyethylene (EO) chain (4H: 3.3 - 3.9 ppm) by H-NMR (manufactured by BRUKER JAPAN, JH074504 AV400). [Number]

[0132] (Emulsified state) 1 g of each example of the hair conditioner was dropped onto a black plastic backing, and the appearance and feel when traced 10 times with a finger were evaluated according to the following criteria. A: Aggregated particles were not visually observable, and it had a smooth feel when traced with a finger. B: Aggregated particles were not visually observable, but it had a rough feel when traced with a finger. C: Aggregated particles were visually observable, and it had a rough feel when traced with a finger. D: Separated

[0133] (Storage stability) The storage stability of each example of the hair conditioner was evaluated by a cycle test. A cycle test was conducted in which each example of the hair conditioner was stored for 2 weeks in an environment where the temperature changed in the range of 40°C to -28°C. The temperature cycle per day was set so that the cycle with a temperature difference ΔT = 40°C was 4 cycles per day. The presence or absence of separation of the hair conditioner after storage was visually observed, and in the table, those without separation and stable were indicated as "A", and those with separation were indicated as "D".

[0134] (Feel during application) For Japanese hair tresses with a length of 30 cm and a mass of 20 g, a bleaching agent (a mixture of 7 mL of "Kao Foam Hair Bleach L" (single liquid) and 14 mL of "Kao Foam Hair Color d" (two liquids)) was applied, left standing for 20 minutes, and then thoroughly rinsed with warm water at 35 - 40°C. The above treatment was repeated 4 times to prepare Japanese damaged hair tresses for evaluation. 1 mL of the hair conditioner of each example was applied to the above-mentioned evaluation tress and kneaded by hand. Five professional panelists evaluated the texture at that time on a 5-point scale according to the following criteria, and the average value was taken as the evaluation result. 5: Very smooth 4: Smooth 3: Slightly smooth 2: The same smoothness as when using a plain conditioner with the following composition 1: Immediately loses presence and is not smooth

[0135] 〔Plain conditioner composition〕 (Mass%) Stearoxypropyl dimethylamine (*1) 0.9 Stearyl alcohol (*2) 3.0 Dipropylene glycol 0.5 Benzyl alcohol 0.2 Lactic acid (*3) 1.1 Residual amount of purified water Total 100.0 (*1) "Farmin DM-E80" manufactured by Kao Corporation, active ingredient content 90% by mass (*2) "Calcohol 8098" manufactured by Kao Corporation, active ingredient content 100% by mass (*3) "PURAC ULTRAPURE90" manufactured by PURAC Thailand Ltd., active ingredient content 90% by mass

[0136] (Moisture resistance of treated hair) 1 mL of the hair conditioner of each example was applied to the evaluation tress of damaged Japanese hair prepared by the above method, and kneaded for 30 seconds. After leaving it in this state for 1 minute, it was rinsed with running water for 30 seconds and dried with a dryer until completely dry. The dried tres was subjected to 10 straight sets while passing through a comb using a flat iron (「AHI-938」manufactured by Miki Electric Industry Co., Ltd.) set at 160°C, and a photo of the tres immediately after the set was taken. Subsequently, the hair after the straight set was suspended and left standing for 30 minutes in a high-humidity environment of 35°C and 80% RH, and a photo was taken again. In the two photos, the tres width at a point 23.5 cm from the root of the tres was measured, and the change in the tres width between immediately after the straight set and after storage under high humidity was calculated from the following formula. Tres width change value = (tres width after storage under high humidity) / (tres width immediately after the straight set) When the above value exceeds 1.3, it appears to be visually widened, so it was determined that the moisture resistance is low.

[0137] Example 1 (Preparation and Evaluation of Hair Conditioner) Using the components listed in Table 1, a hair conditioner was prepared according to the following procedure. Into a 500 mL beaker, 1.52 g of polyquaternium-6 solution as component (A), 3 g of lactic acid (90% by mass), and 422.7 g of water were added, and heating and stirring were carried out at 80°C using a stirring device (a mechanical stirrer with two propeller blades). After confirming that a homogeneous solution was obtained, 0.37 g of sodium polyacrylate as component (B) was added and mixed to obtain a mixture A which is a homogeneous suspension (step (1)). Next, a hair cosmetic composition (hair conditioner) was prepared according to the following procedure. First, 11.0 g of stearoxypropyl dimethylamine as component (D), 31.9 g of stearyl alcohol as component (E), and 10.0 g of dipropylene glycol listed in Table 1 were mixed in advance and heated and dissolved at 75°C to prepare an oil phase component containing an emulsion-forming component. This was added to the mixture A, and heating and stirring were carried out at 75°C for 10 minutes. After stirring for 10 minutes, heating was terminated and air cooling was started (preparation of emulsion (I)). Next, 1.0 g of amodimethicone as component (C), an oil agent (10.0 g of dimethicone and 5.0 g of lanolin fatty acid), and the remaining 3.5 g (90% by mass) of lactic acid described in Table 1 were added, and the mixture was cooled with stirring until the liquid temperature reached 40°C or lower to obtain 500 mL of a hair conditioner (step (2-1)). Using the obtained hair conditioner, evaluation was performed by the above method. The results are shown in Table 1. The blending amounts described in the table of this example are the blending amounts (mass%) of each component in its original form, and the "effective content" described in the table of this example is the content or blending amount (mass%) of each component converted to the amount of the active ingredient.

[0138] Examples 2 to 10, Comparative Examples 1 to 12 A hair conditioner was produced and evaluated in the same manner as in Example 1, except that the types and amounts of each component used in the preparation of the hair conditioner were changed as described in Table 1. The results are shown in Tables 1 to 2.

[0139]

Table 1

[0140]

Table 2

[0141] The components described in the table are as follows. <Component (A): Cationic polymer or amphoteric polymer> *1 Polyquaternium-6 (dimethyl diallyl ammonium chloride polymer), "MERQUAT 100" manufactured by Lubrizol Advanced Materials, Inc., cationic charge density: 6.18 meq / g, Mw: 150,000, effective ingredient amount: 41.5% by mass *2 Polyquaternium-39 (acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer solution), "MERQUAT 3940 POLYMER" manufactured by Lubrizol Advanced Materials, Inc., cationic charge density: 2.97 meq / g, Mw: 150,000, active ingredient content: 43% by mass *3 Polyquaternium-16 (vinylimidazolium trichloride / vinylpyrrolidone copolymer), "Lubikat FC 550" manufactured by BASF SE, cationic charge density: 3.91 meq / g, Mw: 80,000, active ingredient content: 43% by mass *4 Polyquaternium-22 (dimethyl diallyl ammonium chloride / acrylic acid copolymer solution), "MERQUAT 280" manufactured by Lubrizol Advanced Materials, Inc., cationic charge density: 4.99 meq / g, Mw: 450,000, active ingredient content: 41% by mass *5 Polyquaternium-47 (acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer), "MERQUAT 2001 POLYMER" manufactured by Lubrizol Advanced Materials, Inc., cationic charge density: 3.21 meq / g, Mw: 1,300,000, active ingredient content: 21% by mass

[0142] <Component (B): Anionic polymer> *6 Sodium polyacrylate, "Aqueousol 445G Polymer" manufactured by The Dow Chemical Company, anionic charge density: 10.6 meq / g, Mw: 25,000, active ingredient content: 100% by mass *7 (Acrylic acid / stearyl acrylate) copolymer, "Soft Care SA-37W" manufactured by Kao Corporation, anionic charge density: 9.3 meq / g, Mw: 20,000, active ingredient content: 10% by mass <Component (B'): Anionic polymer other than Component (B)> *8 Acrylates copolymer, "Carbopol Aqua SF-1 Polymer" manufactured by Lubrizol Advanced Materials, Inc., Mw: >500,000, active ingredient content: 30% by mass *9 (Methyl vinyl ether / maleic acid) copolymer, "Gantrez S-97" manufactured by Ashland Speciality Ingredients, active ingredient content: 100% by mass <Component (C): Amino-modified silicone / aminopolyether-modified silicone> *10 Amodimethicone, "Silicone SF 8457 C" manufactured by Dow Corning Toray Co., Ltd., active ingredient content: 100% by mass *11 (Bis-isobutyl PEG-15 / amodimethicone) copolymer, "DOWSIL SS-3588 FLUID" manufactured by Dow Corning Toray Co., Ltd., Si / EO (molar ratio): 2.39, active ingredient content: 71.5% by mass <Component (D): Cationic surfactant> *12 Stearoxypropyl dimethylamine, "Farmin DM-E80" manufactured by Kao Corporation, active ingredient content: 90% by mass, a mixture of 10% by mass of stearyl alcohol <Component (E): Higher alcohol> *13 Stearyl alcohol, "Calcohol 8098" manufactured by Kao Corporation, active ingredient content: 100% by mass <Component (F): Non-aromatic polyol> *14 Dipropylene glycol, "DPG-RF" manufactured by ADEKA Corporation, active ingredient content: 100% by mass <Component (G): Oil agent> *15 Dimethicone, "Silicone KHS-3" manufactured by Shin-Etsu Chemical Co., Ltd., active ingredient content: 100% by mass *16 Lanolin fatty acid, "18MEA-CL1" manufactured by Kao Corporation, active ingredient content: 3.5% by mass <Organic acid> *17 Lactic acid, "PURAC ULTRAPURE90" manufactured by PURAC Thailand Ltd., active ingredient content: 90% by mass

Industrial applicability

[0143] According to the present invention, it is possible to provide a hair cosmetic composition that has a good feel when applied to hair, can suppress the spreading of hair under high humidity conditions, and has high stability.

Claims

1. Component (A): One or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, Component (B): One or more anionic polymers selected from the group consisting of polyacrylic acid, (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer, or salts thereof, and Component (C): One or more modified silicones selected from the group consisting of amino-modified silicone and amino polyether-modified silicone, containing, the weight average molecular weight of the component (B) is 3,000 or more and 50,000 or less, the total content of the component (A) and the component (B) is 0.01% by mass or more and 0.40% by mass or less, a hair cosmetic composition, wherein the content of the component (C) is 0.03% by mass or more.

2. The hair cosmetic composition according to claim 1, wherein the content of the component (C) in the hair cosmetic composition is 0.05% by mass or more and 5.0% by mass or less.

3. The hair cosmetic composition according to claim 1 or 2, further containing a cationic surfactant as component (D).

4. The hair cosmetic composition according to claim 1 or 2, further containing a higher alcohol as component (E).

5. The hair cosmetic composition according to claim 1 or 2, wherein the hair cosmetic composition is an emulsion composition.

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