Aqueous composition for body

Abstract

This aqueous composition for the body contains (A) a cationic polymer having a viscosity of 1,000 mPa.s or more at 30 DEG C in a 1 mass% aqueous solution, (B) an anionic polymer, (C) one or more substances selected from the group consisting of (C1) nonionic polymers and (C2) agar, and water.

Description

Technical Field

[0001] The present invention relates to an aqueous body composition. Background Art

[0002] An aqueous composition for treating keratinous substances containing a cationic polymer and an anionic polymer is known. For example, in Japanese Patent Laid-Open No. 53-139734 (Patent Document 1), it is described as follows: By using a composition for treating keratinous substances, anionic polymers can be fixed to keratinous substances, especially hair, skin or nails, wherein the composition for treating keratinous substances is characterized in that the solvent medium contains at least one anionic polymer and at least one cationic polymer. In addition, as a reason for obtaining the above-mentioned effect, it is assumed that it is related to the complex formed by the interaction between the anionic polymer and the cationic polymer.

[0003] Regarding hair cosmetics containing cationic polymers and anionic polymers, Japanese Patent Laid-Open No. 10-287535 (Patent Document 2) describes the following: A semi-permanent hair dye composition, which is a mixture of one or more polymer compounds selected from aromatic alcohols, cationic compounds, and water-soluble anionic polymer compounds, a direct dye, and an acid, and has a pH value and a viscosity above specified values. The semi-permanent hair dye composition has sufficient dyeing properties and a high conditioning effect, and has a stable viscosity at high temperatures or for a long time.

[0004] Japanese Patent Publication No. 2004-525101 (Patent Document 3) discloses a composition comprising: (i) a first polymer having a weight average molecular weight of less than 100,000, the first polymer comprising a) a polymer backbone having hydrocarbon repeating units containing at least one heteroatom, and optionally b) arbitrarily functionalized side chain fatty chains and / or terminal fatty chains containing 6 to 120 carbon atoms and bonded to these hydrocarbon units; (ii) anionic membrane-forming polymer; and (iii) cationic membrane-forming polymer in a physiologically acceptable medium containing a fat phase. The composition is described as follows: the composition brings about a rapid cosmetic effect on keratinous materials, and is particularly applied as a mascara to a cosmetic method and care for keratinous materials.

[0005] Japanese Patent Laid-Open No. 2006-70030 (Patent Document 4) describes a styling gel comprising a first polymer composed of a hydrocolloid based on a nonionic or anionic polysaccharide, a second polymer composed of an acryloyl- or methacrylamide alkylsulfonic acid or a salt thereof, and a third polymer which is an amphiphilic polymer, wherein the styling gel has a volume-imparting effect on wet hair and has a hairstyle-structuring effect on dry hair.

[0006] In addition, Japanese Patent Application Laid-Open No. 2015-166333 (Patent Document 5) describes a hair cosmetic comprising: a cationic polymer having a charge density within a predetermined range, and an anionic polymer having a weight average molecular weight of 4,000 to 80,000, which contains 80% by mass to 100% by mass of a predetermined anionic structural unit, and which improves the touch and appearance of damaged hair, and maintains these effects even after repeated shampooing. Summary of the invention

[0007] The present invention relates to the following contents.

[0008] [1] A body aqueous composition comprising: (A) a cationic polymer having a viscosity of 1% by mass aqueous solution at 30°C of 1,000 mPa·s or more, (B) an anionic polymer, (C) at least one selected from (C1) a nonionic polymer and (C2) agar, and water.

[0009] [2] A cosmetic composition comprising: the aqueous composition for body described in [1] above.

[0010] [3] A method for treating hair, comprising: applying the cosmetic composition according to [2] above to hair, and then heating the hair to a temperature of 80° C. or higher. DETAILED DESCRIPTION

[0011] As described in Patent Document 1 and the like, it is known that an aqueous composition containing a complex formed of a cationic polymer and an anionic polymer (hereinafter also referred to as a "polyion complex") is used as a composition for treating keratin substances such as hair.

[0012] A polyion complex is an aggregate formed by the ionic interaction of a cationic polymer and an anionic polymer. If a treatment composition containing the polyion complex is applied to a treatment object, a stratum corneum-type highly elastic film can be formed. As a result, the texture of the treatment object is improved. For example, when the above composition is used as a hair cosmetic composition such as a conditioner, the hair care effect is shown, and the improvement of the hair tangle inhibition effect is expected. However, in Patent Documents 1 to 5, there is no particular mention of the improvement of the hair tangle inhibition effect. In addition, there is a case where the hair treatment effect disappears after one shampooing, and it is expected to improve the sustainability (wash resistance) of the treatment effect.

[0013] The present invention relates to an aqueous composition for body treatment, which can improve the texture-enhancing effect of a treated object and the sustainability of the effect, and in particular, can improve the tangle-inhibiting effect of hair and the sustainability of the effect when used for hair treatment.

[0014] The present inventors have found that the above-mentioned problems can be solved by an aqueous composition containing a cationic polymer having a viscosity of a 1 mass % aqueous solution of a predetermined value or more, an anionic polymer, one or more selected from a nonionic polymer and agar, and water.

[0015] According to the present invention, there is provided an aqueous body composition which can enhance the texture-enhancing effect of a treated object and the duration of the effect, and in particular, can enhance the tangle-reducing effect of hair and the duration of the effect when used for hair treatment.

[0016] The aqueous composition can be used as various cosmetic compositions such as skin cosmetic compositions and hair cosmetic compositions. In addition, the aqueous composition can also be used as a premix of various cosmetic compositions. For example, additional components can be added to the aqueous composition to prepare a skin cosmetic composition or a hair cosmetic composition.

[0017] [definition]

[0018] In this specification, "aqueous composition for body use" means an aqueous composition for treating the surface of body surfaces, such as the surface of keratin substances such as skin, hair, eyelashes, eyebrows, and nails. "Aqueous composition" means a composition containing water as a main component, preferably a composition containing 50% by mass or more of water.

[0019] The aqueous body composition of the present invention is preferably an aqueous composition for treating keratin substances, and more preferably an aqueous composition for treating skin or hair.

[0020] In this specification, "containing component X" also includes compounded component X.

[0021] [Water-based composition for body]

[0022] The aqueous composition for body use of the present invention (hereinafter also referred to as "aqueous composition" or "composition of the present invention") contains: (A) a cationic polymer having a viscosity of 1 mass % aqueous solution at 30°C of 1,000 mPa·s or more, (B) an anionic polymer, (C) one or more selected from (C1) a nonionic polymer and (C2) agar, and water.

[0023] The composition of the present invention, by having the above-mentioned structure, can enhance the effect of improving the texture of the treated object and the sustainability of the effect, and can particularly enhance the effect of inhibiting hair tangling and the sustainability of the effect when used for hair treatment.

[0024] The reason why the composition of the present invention exerts the above-mentioned effects is not certain, but is considered to be as follows.

[0025] The composition of the present invention comprises a polyion complex formed by ionic interaction between component (A) and component (B). It is believed that in the polyion complex, a cross-linked structure utilizing ionic interaction is formed between component (A) and component (B), so that the film obtained using the composition of the present invention exhibits a higher elastic modulus.

[0026] Furthermore, the composition of the present invention contains, as component (C), one or more selected from (C1) a nonionic polymer and (C2) agar.

[0027] In the epidermis obtained by using the composition containing (C1) nonionic polymer as component (C), it is believed that the rigid cross-linked structure of the polyion complex formed by component (A) and component (B) is reinforced by the long chain and soft non-cross-linked structure of component (C1). In addition, since there may be a hydrogen bond between component (B) and component (C1), it is believed that component (C1) is retained in the above-mentioned cross-linked structure by component (B) to form a higher strength network in the epidermis. Thus, it is believed that if the composition of the present invention is used, the texture enhancement effect of the object to be treated can be obtained even by 1 treatment, and the treatment effect will not be lost even if it is washed thereafter, and the continuity of the effect can be obtained.

[0028] In the membrane obtained by using a composition containing (C2) agar as component (C), it is believed that the above-mentioned cross-linked structure formed by component (A) and component (B) is reinforced by component (C2) having a double helix structure. Since there may be a hydrogen bond between component (B) and component (C2), component (C2) is retained in the above-mentioned cross-linked structure through component (B). Furthermore, since component (C2) undergoes sol-gel transfer due to heat and becomes a hard gel having a three-dimensional cross-linked structure after cooling, it is believed that a higher-strength network consisting of component (A), component (B) and component (C2) is formed in the membrane.

[0029] In addition, it is believed that when the viscosity of a 1 mass % aqueous solution of the component (A) used in the present invention at 30°C is 1,000 mPa·s or more, the lubricity of the obtained film is improved. It is believed that the texture of the treated object is further improved, and when the composition of the present invention is used for hair treatment, the effect of preventing hair tangling is improved.

[0030] (Component (A): cationic polymer)

[0031] Component (A) is a cationic polymer having a viscosity of 1,000 mPa·s or more in a 1 mass % aqueous solution at 30° C., and is a polymer capable of forming a polyion complex by interaction with component (B).

[0032] The cationic polymer as component (A) is preferably a polymer having a cationic group and having a total positive charge. Component (A) may have an anionic group, a nonionic group, or an amphoteric group such as a betaine group in addition to the cationic group, within the range not hindering the effect of the present invention.

[0033] In the present specification, the cationic group is a cationic group or a group that can become a cationic group by ionization, and specific examples thereof include a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium group.

[0034] The anionic group is an anionic group or a group that can become an anionic group by ionization, and specifically, one or more selected from acidic groups such as carboxyl groups, sulfonic acid groups, and phosphoric acid groups can be mentioned, preferably one or more selected from carboxyl groups and sulfonic acid groups, and more preferably carboxyl groups. At least a part of the anionic group can be neutralized to become a salt state.

[0035] The viscosity of a 1 mass % aqueous solution of component (A) at 30° C. is 1,000 mPa·s or more, preferably 1,300 mPa·s or more, more preferably 1,500 mPa·s or more, further preferably 1,700 mPa·s or more, further more preferably 1,800 mPa·s or more, from the viewpoint of improving the texture of the treated object and the sustainability of the effect, particularly the effect of suppressing hair tangling when used for hair treatment and the sustainability of the effect. The upper limit of the viscosity is not particularly limited, but from the viewpoint of ease of formation of the polyion complex and handleability, it is preferably 100,000 mPa·s or less, more preferably 80,000 mPa·s or less, further preferably 50,000 mPa·s or less, further more preferably 30,000 mPa·s or less, further more preferably 25,000 mPa·s or less. The viscosity of a 1 mass % aqueous solution of component (A) at 30° C. is 1,000 mPa·s or more, preferably 1,000 mPa·s or more and 100,000 mPa·s or less, more preferably 1,300 mPa·s or more and 80,000 mPa·s or less, further preferably 1,500 mPa·s or more and 50,000 mPa·s or less, further more preferably 1,700 mPa·s or more and 30,000 mPa·s or less, further more preferably 1,800 mPa·s or more and 25,000 mPa·s or less.

[0036] The viscosity of a 1 mass % aqueous solution of the component (A) at 30° C. means the viscosity of an aqueous solution containing 1 mass % of the effective ingredient of the cationic polymer at 30° C., and can be specifically measured by the method described in the Examples.

[0037] The cationic charge density of component (A) is preferably 0.1 mmol / g or more, more preferably 0.2 mmol / g or more, further preferably 0.3 mmol / g or more, further preferably 0.5 mmol / g or more, from the viewpoint of easily forming a polyion complex by interaction with component (B), the effect of improving the texture of the object to be treated and the improvement of the sustainability of the effect, especially the effect of suppressing the tangling of hair when used for hair treatment and the improvement of the sustainability of the effect. In addition, from the viewpoint of improving the texture of the object to be treated and the improvement of the sustainability of the effect, especially the effect of suppressing the tangling of hair when used for hair treatment and the improvement of the sustainability of the effect, it is preferably 20 mmol / g or less, more preferably 15 mmol / g or less, further preferably 12 mmol / g or less, further preferably 10 mmol / g or less, further more preferably 7.0 mmol / g or less, further more preferably 5.0 mmol / g or less. Moreover, the cationic charge density of component (A) is preferably from 0.1 mmol / g to 20 mmol / g, more preferably from 0.2 mmol / g to 15 mmol / g, from 0.2 mmol / g to 12 mmol / g, further preferably from 0.3 mmol / g to 10 mmol / g, further more preferably from 0.3 mmol / g to 7.0 mmol / g, further more preferably from 0.5 mmol / g to 5.0 mmol / g.

[0038] The cationic charge density of component (A) is the molar number of cationic groups contained per 1 g of the polymer. When at least a portion of the cationic groups of component (A) are in the form of neutralized salts, the molar number of cationic groups also includes the molar number of cationic groups in the form of salts.

[0039] Furthermore, two or more polymers may be used as the component (A). In this case, the cationic charge density of the component (A) can be determined by calculating a weighted average from the cationic charge densities and blending amounts of the respective polymers.

[0040] As the component (A), any of natural polymers such as cationized polysaccharides or cationized products thereof, and synthetic polymers can be used, but synthetic polymers are preferred from the viewpoint of easy availability.

[0041] Specific examples of the polymer used as component (A) include cationized polyvinyl alcohol, polyethyleneimine, methacryloylethyl trimethyl ammonium salt polymer, quaternized dialkylaminoalkyl (meth) acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyl trimethyl ammonium salt polymer, vinyl imidazolium trichloride·vinyl pyrrolidone copolymer (polyquaternium-16), vinyl pyrrolidone·alkylamino (meth) acrylate copolymer, vinyl pyrrolidone·alkylamino (meth) acrylate·vinyl caprolactam copolymer, alkyl acrylamide·(meth) acrylate·alkylaminoalkyl acrylamide·polyethylene glycol (meth) acrylate copolymer, adipic acid·dimethylaminohydroxypropyl ethylenetriamine copolymer, and the like, and one or more of these can be used. In addition, in the present specification, "(meth) acrylic acid" means acrylic acid or methacrylic acid, and "(meth) acrylate" means acrylic acid or methacrylate.

[0042] Among the above, examples of methacryloylethyltrimethylammonium salt polymers include methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37), methacryloylethyldimethylbetaine·methacryloylethyltrimethylammonium chloride·methacrylic acid methoxypolyethylene glycol copolymer (Polyquaternium-49), methacryloylethyldimethylbetaine·methacryloylethyltrimethylammonium chloride·methacrylic acid 2-hydroxyethyl ester copolymer (Polyquaternium-48), etc.

[0043] Examples of the quaternized dialkylaminoalkyl (meth)acrylate polymer include vinyl pyrrolidone·N,N-dimethylaminoethyl methacrylate diethylsulfate copolymer (Polyquaternium-11), N,N-dimethylaminoethyl methacrylate diethylsulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer (Polyquaternium-52), and the like.

[0044] As diallyl quaternized ammonium salt polymers, there can be mentioned: dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium chloride·acrylic acid copolymer (polyquaternium-22), dimethyldiallylammonium chloride·acrylamide copolymer (polyquaternium-7), acrylamide·acrylic acid·dimethyldiallylammonium chloride copolymer (polyquaternium-39), etc.

[0045] In addition, examples of methacrylamide propyl trimethylammonium salt polymers include methacrylamide propyl trimethylammonium chloride polymers, vinyl pyrrolidone·methacrylamide propyl trimethylammonium chloride copolymers, acrylic acid·methyl acrylate·methacrylamide propyl trimethylammonium chloride copolymers (Polyquaternium-47), acrylic acid·acrylamide·methacrylamide propyl trimethylammonium chloride copolymers (Polyquaternium-53), and the like.

[0046] Component (A) is preferably a polymer containing a structural unit represented by the following general formula (1) from the viewpoint of improving film-forming ability, improving the texture of the treated object and its texture-enhancing effect and the sustainability of the effect, and particularly improving the effect of suppressing hair tangling when used for hair treatment and its sustainability.

[0047]

[0048] In formula (1), R 1 is a hydrogen atom or a methyl group, R 2 ~R 4 Each independently represents an alkyl group having 1 to 4 carbon atoms. X represents -O- or -NH-, and m represents a number of 1 to 4.

[0049] R in the general formula (1) 1 Preferably, methyl, R 2 ~R 4 Each independently is preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group, and still more preferably a methyl group.

[0050] In the general formula (1), X is preferably -O-, and m is preferably 1 or more and 3 or less, and more preferably 2 or more and 3 or less.

[0051] The structural unit represented by the general formula (1) may be one or more selected from the group consisting of a structural unit derived from methacryloylethyltrimethylammonium salt, a structural unit derived from N,N-dimethylaminoethylmethacrylate diethylsulfate, and a structural unit derived from methacrylamidopropyltrimethylammonium salt, and preferably one or more selected from the group consisting of a structural unit derived from methacryloylethyltrimethylammonium salt and a structural unit derived from N,N-dimethylaminoethylmethacrylate diethylsulfate.

[0052] Component (A) may also be a polymer containing other structural units in addition to the structural unit represented by the general formula (1). Examples of such other structural units include structural units derived from vinyl monomers such as vinyl pyrrolidone, amphoteric monomers such as (meth)acryloylethyl dimethyl betaine, alkyl (meth)acrylates, hydroxyalkyl (meth)acrylates such as 2-hydroxyethyl (meth)acrylate, and acrylamides such as N,N-dimethylacrylamide. In addition, component (A) may also be a cross-linked polymer cross-linked by polyethylene glycol di(meth)acrylate or the like.

[0053] In the component (A), the content of the structural unit represented by the general formula (1) is preferably 8.0 mol% or more and 100 mol% or less of all the structural units constituting the component (A), from the viewpoint of improving the film-forming ability, improving the texture of the treated object and the effect of improving the texture and the sustainability of the effect, and particularly improving the effect of suppressing the tangle of hair when used for hair treatment and the sustainability of the effect.

[0054] In addition, component (A) is preferably a polymer having a cross-linked structure. Here, the so-called cross-linked structure means a three-dimensional network structure formed by polymer chains as the main structure being linked within or between polymer chains. The formation method of the cross-linked structure is not particularly limited, and for example, a method of cross-linking while polymerizing such as polycondensation or free radical polymerization, or a method of cross-linking the polymer chains thereafter can be cited.

[0055] Component (A) may be used in combination of one or more. Among the above, from the viewpoint of making it easy to make the viscosity of a 1 mass % aqueous solution at 30° C. to be a predetermined value or more, from the viewpoint of improving the texture of the treated object and the sustainability of the effect, and especially from the viewpoint of improving the tangle suppression effect of hair when used for hair treatment and the sustainability of the effect, component (A) is preferably one or more selected from methacryloylethyltrimethylammonium salt polymers and quaternized dialkylaminoalkyl (meth)acrylate polymers, and more preferably selected from methacryloylethyltrimethylammonium chloride polymers (Polyquaternium-37), methacryloylethyldimethylbetaine·methacryloylethyltrimethylammonium chloride·methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-37), and methacryloylethyldimethylbetaine·methacryloylethyltrimethylammonium chloride·methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-37). ammonium salt-49), methacryloylethyl dimethyl betaine methacryloylethyl trimethyl ammonium chloride methacrylate 2-hydroxyethyl copolymer (polyquaternium-48), and N,N-dimethylaminoethyl methacrylate diethyl sulfate · N,N-dimethylacrylamide · polyethylene glycol dimethacrylate copolymer (polyquaternium-52) One or more, and more preferably one selected from methacryloylethyl trimethyl ammonium chloride polymer (polyquaternium-37) and N,N-dimethylaminoethyl methacrylate diethyl sulfate · N,N-dimethylacrylamide · polyethylene glycol dimethacrylate copolymer (polyquaternium-52) At least one.

[0056] As component (A), commercially available polymers may also be used. Specific examples thereof include: "Cosmedia Ultragel 300" (polyquaternium salt-37, cationic charge density: 4.81 mmol / g) manufactured by BASF Japan (strain), "Sofcare KG-101W-E" (polyquaternium salt-52, cationic charge density: 0.83 mmol / g) manufactured by Kao (strain), "Sofcare KG-301W" (polyquaternium salt-52, cationic charge density: 1.84 mmol / g) and the like. Furthermore, these are all cationic polymers with crosslinked structures.

[0057] (Component (B): anionic polymer)

[0058] Component (B) is a polymer that can form a polyion complex through interaction with component (A). In this specification, "anionic polymer" means a polymer having anionic groups and substantially no cationic groups and amphoteric groups. "Substantially no cationic groups and amphoteric groups" means that the molar amount of cationic groups and amphoteric groups relative to anionic groups is preferably less than 0.1%.

[0059] As the anionic group possessed by component (B), preferably an acidic group such as a carboxyl group, a sulfonic acid group, a phosphoric acid group, etc., from the viewpoint of easily forming a polyion complex through interaction with component (A) and the viewpoint of availability, a carboxyl group is more preferred. Furthermore, in component (B), at least a part of the anionic group can be neutralized to form a salt state.

[0060] <Component (B1): Crosslinked polymer containing a structural unit derived from (meth)acrylic acid, anionic polysaccharide>

[0061] From the viewpoint of the effect of improving the texture of the treated object and the sustained improvement of the effect, particularly the effect of suppressing hair tangling when used for hair treatment and the sustained improvement of the effect, component (B) preferably comprises: (B1) at least one selected from a cross-linked polymer containing a structural unit derived from (meth)acrylic acid and anionic polysaccharides.

[0062] As the cross-linked polymer containing a structural unit derived from (meth) acrylic acid in component (B1), a homopolymer or copolymer of (meth) acrylic acid having a cross-linked structure, or a salt thereof, can be cited. The so-called cross-linked structure here means a three-dimensional network structure formed by polymer chains as the main structure of the polymer being linked within or between polymer chains. The method for forming the cross-linked structure is not particularly limited, and for example, a method of cross-linking while polymerizing, such as polycondensation or free radical polymerization, or a method of cross-linking the polymer chains thereafter can be cited.

[0063] Examples of the homopolymer of (meth)acrylic acid include polyacrylic acid, polymethacrylic acid, and salts thereof.

[0064] Examples of the copolymer of (meth)acrylic acid include (meth)acrylic acid / maleic acid copolymers, (meth)acrylic acid / itaconic acid copolymers, (meth)acrylic acid / fumaric acid copolymers, (meth)acrylic acid / vinyl acetate copolymers, (meth)acrylic acid / alkyl (meth)acrylate copolymers, (meth)acrylic acid / 2-hydroxyethyl methacrylate copolymers, acrylic acid / alkyl acrylate / (N-alkyl)acrylamide copolymers, and salts thereof. One or more of these may be used.

[0065] Among the above, the copolymer of (meth)acrylic acid is preferably (meth)acrylic acid / alkyl (meth)acrylate, and more preferably acrylic acid / alkyl acrylate. As the alkyl (meth)acrylate, there can be mentioned alkyl (meth)acrylates in which the number of carbon atoms in the alkyl group is preferably 1 or more, more preferably 4 or more, and further preferably 8 or more, and preferably 40 or less, more preferably 36 or less, and further preferably 32 or less.

[0066] Specific examples of the cross-linked polymer containing a structural unit derived from (meth)acrylic acid include carboxyvinyl polymer or its salt, (acrylate / alkyl (C10-30) acrylate) cross-linked polymer, (Na acrylic acid / acryloyldimethyl taurine / dimethyl acrylamide) cross-linked polymer, acrylate cross-linked polymer-4, etc.

[0067] Examples of the anionic polysaccharides in component (B1) include polysaccharides having a carboxyl group (hyaluronic acid, alginic acid, pectic acid, carboxymethyl cellulose, xanthan gum, etc.), sulfates of polysaccharides (carrageenan, keratan sulfate, dermatan sulfate, sulfated starch, heparin, heparan sulfate), and salts thereof. One or more of these can be used.

[0068] Among the above, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing hair tangling when used for hair treatment and the continuous improvement of the effect, the anionic polysaccharide is preferably a polysaccharide having a carboxyl group or a salt thereof, more preferably alginic acid, carboxymethyl cellulose, or a salt thereof, and still more preferably alginic acid or a salt thereof.

[0069] When the component (B1) is a salt, examples of the salt include alkali metal salts such as sodium salts and potassium salts, and alkaline earth metal salts. From the viewpoint of availability, alkali metal salts are preferred.

[0070] Among the above, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing hair tangling when used for hair treatment and the continuous improvement of the effect, component (B1) is preferably one or more selected from carboxyvinyl polymers, (acrylate / alkyl (C10-30) acrylate) crosslinked polymers, and anionic polysaccharides, more preferably anionic polysaccharides or salts thereof, and still more preferably alginic acid or salts thereof.

[0071] The anionic charge density of the component (B1) is not particularly limited, but is preferably 1.0 mmol / g or more, more preferably 2.0 mmol / g or more, and further preferably 3.5 mmol / g or more from the viewpoint of easily forming a polyion complex through interaction with the component (A), the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of inhibiting the tangle of hair when used for hair treatment and the continuous improvement thereof. From the viewpoint of improving the texture of the treated object and the continuous improvement thereof, especially the effect of inhibiting the tangle of hair when used for hair treatment and the continuous improvement thereof, it is preferably 25 mmol / g or less, more preferably 20 mmol / g or less, and further preferably 15 mmol / g or less. Furthermore, the anionic charge density of the component (B1) is preferably 1.0 mmol / g or more and 25 mmol / g or less, more preferably 2.0 mmol / g or more and 20 mmol / g or less, and further preferably 3.5 mmol / g or more and 15 mmol / g or less.

[0072] The anionic charge density of component (B1) is the number of moles of anionic groups contained per 1 g of polymer. When at least a portion of the anionic groups of component (B1) are in the form of neutralized salts, the number of moles of anionic groups also includes the number of moles of anionic groups in the form of salts.

[0073] Two or more polymers may be used as the component (B1). In this case, the anionic charge density of the component (B1) can be determined by calculating a weighted average based on the anionic charge density and the blending amount of each polymer.

[0074] When component (B1) is an anionic polysaccharide, from the viewpoint of improving film-forming ability, its weight average molecular weight (Mw) is preferably 2,000 or more, more preferably 10,000 or more, further preferably more than 30,000, further more preferably more than 50,000. In addition, from the viewpoint of easily forming a polyion complex through interaction with component (A), the effect of improving the texture of the treated object and its continuous improvement, especially the effect of inhibiting the tangle of hair when used for hair treatment and its continuous improvement, it is preferably 3.5 million or less, more preferably 3 million or less. Moreover, the weight average molecular weight (Mw) of the anionic polysaccharide as component (B1) is preferably 2,000 or more and 3.5 million or less, more preferably 10,000 or more and 3 million or less, further preferably more than 30,000 and 3 million or less, further more preferably 50,000 or more and 3 million or less.

[0075] The weight average molecular weight of the component (B1) can be measured by gel permeation chromatography (GPC).

[0076] The content of the component (B1) in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, further preferably 70% by mass or more, further preferably 80% by mass or more, and is 100% by mass or less, from the viewpoint of improving the film-forming ability, facilitating the formation of a polyion complex by interaction with the component (A), improving the texture-enhancing effect of the treated object and the sustainability of the effect, and particularly improving the tangle-inhibiting effect of hair when used for hair treatment and the sustainability of the effect.

[0077] <Component (B2): Anionic polymer other than component (B1)>

[0078] Regarding component (B), from the viewpoint of further improving the texture-enhancing effect of the treated object and the sustainability of the effect, especially from the viewpoint of improving the tangle-inhibiting effect of the hair when used for hair treatment and the sustainability of the effect, it is preferred to further contain: (B2) an anionic polymer other than the above-mentioned component (B1). It is believed that component (B2) forms a hydrogen bond with component (C) obtained by complexing with the cross-linked structure in the polyion complex, thereby fixing component (C) in the cross-linked structure of the polyion complex formed by component (A)-component (B). It is believed that due to this effect, even if the object is washed or cleaned after being treated with the composition of the present invention, component (C) will not be washed away and will easily remain in the film, thereby improving the sustainability of the treatment effect.

[0079] The molecular weight of component (B2) is preferably 1,000 or more, more preferably 2,000 or more, further preferably 5,000 or more, further preferably 10,000 or more, and preferably 50,000 or less, more preferably 40,000 or less, further preferably 30,000 or less, from the viewpoint of contributing to the fixation of component (C), further improving the texture-enhancing effect of the treated object and the sustainability of the effect, and particularly improving the tangle-reducing effect of hair when used for hair treatment and the sustainability of the effect. In addition, the molecular weight of component (B2) is preferably 1,000 or more and 50,000 or less, more preferably 1,000 or more and 30,000 or less, further preferably 2,000 or more and 30,000 or less, further preferably 5,000 or more and 30,000 or less, further more preferably 10,000 or more and 30,000 or less.

[0080] The "molecular weight" referred to herein means a weight average molecular weight, which can be measured by gel permeation chromatography (GPC).

[0081] Component (B2) is preferably a polymer having a carboxyl group having a molecular weight of 1,000 to 50,000, more preferably 1,000 to 30,000, and more preferably a non-crosslinked polymer having a molecular weight of 1,000 to 30,000 containing a structural unit derived from (meth)acrylic acid.

[0082] Examples of the non-crosslinked polymer containing a structural unit derived from (meth)acrylic acid which can be suitably used as the component (B2) include, in addition to poly(meth)acrylic acid, (meth)acrylic acid / maleic acid copolymers, (meth)acrylic acid / itaconic acid copolymers, (meth)acrylic acid / fumaric acid copolymers, (meth)acrylic acid / vinyl acetate copolymers, (meth)acrylic acid / alkyl (meth)acrylate copolymers, (meth)acrylic acid / 2-hydroxyethyl methacrylate copolymers, acrylic acid / alkyl acrylate / (N-alkyl)acrylamide copolymers, and salts thereof. One or more of these can be used.

[0083] Examples of the polymer having a carboxyl group other than the above which can be suitably used as the component (B2) include polymaleic acid, maleic acid / diisobutylene copolymers, maleic acid / styrene copolymers, benzoic acid formaldehyde condensates, benzoic acid / phenol / formaldehyde condensates, and salts thereof.

[0084] Among the above, from the viewpoint of further improving the texture-enhancing effect on the treated object and the sustainability of the effect, particularly from the viewpoint of improving the anti-tangling effect of hair when used for hair treatment and the sustainability of the effect, component (B2) is preferably at least one selected from poly(meth)acrylic acid, (meth)acrylic acid / alkyl (meth)acrylate copolymers, and salts thereof.

[0085] Examples of the poly(meth)acrylic acid or a salt thereof include polyacrylic acid, polymethacrylic acid, and salts thereof, and polyacrylic acid or a salt thereof is preferred.

[0086] As the (meth)acrylic acid / (meth)acrylic acid alkyl ester copolymer or its salt, acrylic acid / acrylic acid alkyl ester or its salt is more preferred. As the (meth)acrylic acid alkyl ester, there can be mentioned: an alkyl (meth)acrylic acid ester having an alkyl group with a carbon number of preferably 1 or more, more preferably 4 or more, further preferably 8 or more, further more preferably 12 or more, and preferably 40 or less, more preferably 36 or less, further preferably 32 or less, further more preferably 24 or less.

[0087] The (meth)acrylic acid / (meth)acrylic acid alkyl ester is preferably acrylic acid / alkyl acrylate, more preferably one or more selected from (acrylic acid / octyl acrylate) copolymers and (acrylic acid / stearyl acrylate) copolymers, and still more preferably (acrylic acid / stearyl acrylate) copolymers.

[0088] When the component (B2) is a salt, examples of the salt include alkali metal salts such as sodium salts and potassium salts, and alkaline earth metal salts. From the viewpoint of availability, alkali metal salts are preferred.

[0089] The anionic charge density of the component (B2) is not particularly limited, but is preferably 1.0 mmol / g or more, more preferably 3.0 mmol / g or more, and even more preferably 5.0 mmol / g or more, and is preferably 25 mmol / g or less, more preferably 20 mmol / g or less, and even more preferably 15 mmol / g or less, from the viewpoint of further improving the texture-enhancing effect of the treated object and the sustainability of the effect, especially the effect of inhibiting hair tangling when used for hair treatment and the sustainability of the effect, and is preferably 25 mmol / g or less, more preferably 20 mmol / g or less, and even more preferably 15 mmol / g or less. Furthermore, the anionic charge density of the component (B2) is preferably 1.0 mmol / g or more and 25 mmol / g or less, more preferably 3.0 mmol / g or more and 20 mmol / g or less, and even more preferably 5.0 mmol / g or more and 15 mmol / g or less.

[0090] Two or more polymers may be used as the component (B2). In this case, the anionic charge density of the component (B2) can be determined by calculating a weighted average based on the anionic charge density and the blending amount of each polymer.

[0091] When component (B) contains component (B2), the content of component (B2) in component (B) is preferably 1% by mass or more, more preferably 2% by mass or more, further preferably 3% by mass or more, further preferably 5% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, further preferably 30% by mass or less, further preferably 20% by mass or less, from the viewpoint of further improving the texture-enhancing effect of the treated object and the sustainability of the effect, particularly the effect of inhibiting hair tangling when used for hair treatment and the sustainability of the effect, and is preferably 50% by mass or less, more preferably 40% by mass or less, further preferably 30% by mass or less, further preferably 20% by mass or less. Furthermore, the content of component (B2) in component (B) is preferably 1% by mass or more and 50% by mass or less, more preferably 2% by mass or more and 40% by mass or less, further preferably 3% by mass or more and 30% by mass or less, further preferably 5% by mass or more and 20% by mass or less.

[0092] When component (B) contains component (B1) and component (B2), the mass ratio of component (B2) to the total amount of component (B1) and component (B2) [(B2) / {(B1)+(B2)}] is preferably 0.01 or more, more preferably 0.02 or more, further preferably 0.05 or more, further preferably 0.08 or more, further preferably 0.10 or more, from the viewpoint of improving the texture-enhancing effect of the object to be treated and the sustainability of the effect, particularly improving the tangle-inhibiting effect of hair when used for hair treatment and the sustainability of the effect, and is preferably 1.0 or less, more preferably 0.80 or less, further preferably 0.50 or less, further preferably 0.30 or less, further preferably 0.15 or less, from the viewpoint of easiness of forming a polyion complex with component (A). Moreover, the mass ratio [(B2) / {(B1)+(B2)}] is preferably 0.01 to 1.0, more preferably 0.02 to 0.80, further preferably 0.05 to 0.50, further preferably 0.08 to 0.30, further more preferably 0.10 to 0.15.

[0093] (ingredient (C))

[0094] The composition of the present invention contains one or more selected from (C1) nonionic polymers and (C2) agar as component (C). In the present specification, "nonionic polymer" means a polymer having substantially no cationic group, anionic group or amphoteric group as an ionic group.

[0095] [Component (C1): nonionic polymer]

[0096] Component (C1) includes polyalkylene glycol or derivatives thereof, polymers containing structural units derived from vinylpyrrolidone, polymers containing structural units derived from (meth)acrylate, polyvinyl alcohol, polyacrylamide, polycaprolactam, and the like, and one or more of these may be used.

[0097] Examples of the polyalkylene glycol include homopolymers or copolymers of alkylene glycols having an alkylene group with an alkylene group having carbon atoms of 2 to 6, preferably 2 to 4, and more preferably 2 to 3. Specific examples thereof include polyethylene glycol, polypropylene glycol, polytrimethylene ether glycol, polytetramethylene ether glycol, polyethylene glycol-polypropylene glycol copolymers (polyoxyethylene polyoxypropylene glycol), polyethylene glycol-polytrimethylene ether glycol copolymers, polyethylene glycol-polytetramethylene ether glycol copolymers, and polypropylene glycol-polytetramethylene ether glycol copolymers. Among these, from the viewpoint of the effect of improving the texture of the object to be treated and the improvement of the sustainability of the effect, particularly the effect of suppressing the tangling of hair when used for hair treatment and the improvement of the sustainability of the effect, and the viewpoint of availability, at least one selected from polyethylene glycol, polypropylene glycol, and polyethylene glycol-polypropylene glycol copolymers is preferred, and at least one selected from polyethylene glycol and polyethylene glycol-polypropylene glycol copolymers is more preferred.

[0098] Examples of the polyalkylene glycol derivatives include terminal modified products of the above-mentioned polyalkylene glycols, such as polyalkylene glycol monoalkyl ethers, polyalkylene glycol dialkyl ethers, polyalkylene glycol monoaryl ethers, polyalkylene glycol diaryl ethers, polyalkylene glycol monofatty acid esters, polyalkylene glycol difatty acid esters, polyalkylene glycol diglycidyl ethers, etc. Among these, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing the tangle of hair when used for hair treatment and the continuous improvement of the effect, and the viewpoint of availability, at least one selected from the group consisting of polyalkylene glycol monoalkyl ethers, polyalkylene glycol dialkyl ethers, polyalkylene glycol monofatty acid esters, and polyalkylene glycol difatty acid esters is preferred, and at least one selected from the group consisting of polyalkylene glycol monofatty acid esters and polyalkylene glycol difatty acid esters is more preferred.

[0099] The number of carbon atoms of the alkyl group in the mono- or di-alkyl ether of the polyalkylene glycol and the number of carbon atoms of the fatty acid in the mono- or di-fatty acid ester of the polyalkylene glycol are preferably 1 to 36, more preferably 4 to 32, further preferably 8 to 24, further more preferably 12 to 22. The number of carbon atoms of the aryl group in the mono- or diaryl ether of the polyalkylene glycol is preferably 6 to 36, more preferably 6 to 32, further preferably 6 to 24, further more preferably 6 to 22.

[0100] Specific examples of polyalkylene glycol derivatives include polyethylene glycol monomethyl ether, polyethylene glycol dimethyl ether, polyethylene glycol monobutyl ether, polyethylene glycol dibutyl ether, polyethylene glycol monooctyl ether, polyethylene glycol monodecyl ether, polyethylene glycol monododecyl ether, polyethylene glycol monotridecyl ether, polyethylene glycol-bisphenol A ether, polyethylene glycol dilaurate, polyethylene glycol distearate, distearate, polyethylene glycol distearate), polyethylene glycol diglycidyl ether, polyethylene glycol-polypropylene glycol-monomethyl ether, polyethylene glycol-polypropylene glycol-dimethyl ether, polyethylene glycol-polypropylene glycol-monobutyl ether, polyethylene glycol-polypropylene glycol-dibutyl ether, polyethylene glycol-polypropylene glycol-monooctyl ether, polyethylene glycol-polypropylene glycol-monodecyl ether, polyethylene glycol-polypropylene glycol-monododecyl ether, polyethylene glycol-polypropylene glycol-monotridecyl ether, polyethylene glycol-polypropylene glycol-bisphenol A ether, polyethylene glycol-polypropylene glycol-dilaurate, distearate polyethylene glycol-polypropylene glycol, polyethylene glycol-polypropylene glycol-diglycidyl ether, etc., and one or two or more of these can be used.

[0101] Examples of polymers containing structural units derived from vinyl pyrrolidone include homopolymers of vinyl pyrrolidone and copolymers of vinyl pyrrolidone and nonionic monomers, and specific examples thereof include polyvinyl pyrrolidone, vinyl pyrrolidone / vinyl acetate copolymers, and vinyl pyrrolidone / methacrylamide / vinylimidazole copolymers.

[0102] Examples of the polymer containing a structural unit derived from a (meth)acrylate include homopolymers of (meth)acrylate and copolymers of (meth)acrylate and nonionic monomers such as (meth)acrylamide, dimethylacrylamide, vinyl acetate, and vinyl methyl ether. Examples of the (meth)acrylate include hydroxyalkyl (meth)acrylates and alkyl (meth)acrylate ethers, in addition to the above-mentioned alkyl (meth)acrylates.

[0103] Specific examples of the polymer containing a structural unit derived from a (meth)acrylate include a (dimethylacrylamide / hydroxyethyl acrylate / methoxyethyl acrylate) copolymer and a (hydroxyethyl acrylate / methoxyethyl acrylate) copolymer.

[0104] Among the above, from the viewpoint of the effect of improving the texture of the object to be treated and the improvement of the sustainability of the effect, in particular, the effect of suppressing the tangle of hair when used for hair treatment and the improvement of the sustainability of the effect, and from the viewpoint of availability, as component (C1), preferably at least one selected from polyalkylene glycol or its derivatives, and a polymer containing a structural unit derived from vinyl pyrrolidone, more preferably at least one selected from polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol copolymer, mono- or di-fatty acid esters thereof, and polyvinyl pyrrolidone, further preferably at least one selected from polyethylene glycol, polyethylene glycol-polypropylene glycol copolymer, mono- or di-fatty acid esters thereof, and polyvinyl pyrrolidone, further more preferably at least one selected from polyethylene glycol, polyethylene glycol-polypropylene glycol copolymer, polyethylene glycol distearate, and polyvinyl pyrrolidone.

[0105] The weight average molecular weight (Mw) of the component (C1) is preferably 2,000 or more, more preferably 5,000 or more, and further preferably 10,000 or more, and is preferably 2,000,000 or less, and further preferably 1,500,000 or less, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement of the effect, and the viewpoint of availability. In addition, the weight average molecular weight of the component (C) is preferably 2,000 or more and 2,000,000 or less, more preferably 5,000 or more and 1,500,000 or less, and further preferably 10,000 or more and 1,500,000 or less.

[0106] The weight average molecular weight of the component (C1) can be measured by gel permeation chromatography (GPC).

[0107] [Ingredients (C2): agar]

[0108] (C2) Agar is not particularly limited as long as it is composed of nonionic agarose as a main component and a small amount of anionic agar-sulfuron, and a commercially available item can be used.

[0109] The gel strength of a 1.5% aqueous solution of the component (C2) is preferably 10 g or more, more preferably 50 g or more, further preferably 100 g or more, further more preferably 200 g or more, and preferably 1,500 g or less, more preferably 1,000 g or less, and further preferably 800 g or less, from the viewpoint of the effect of improving the texture of the treated object and the sustainability of the effect, particularly the effect of suppressing the tangling of hair when used for hair treatment and the sustainability of the improvement. Furthermore, the gel strength of a 1.5% aqueous solution of the component (C2) is preferably 10 g or more and 1,500 g or less, more preferably 50 g or more and 1,000 g or less, further preferably 100 g or more and 800 g or less, and further more preferably 200 g or more and 800 g or less.

[0110] The gel strength of component (C2) is the strength of the gel formed by leaving a 1.5% aqueous solution at 20°C for 15 hours to solidify. 2 The maximum weight (in grams) that can be sustained in 20 seconds can be determined by the Nikkansui-type measuring method.

[0111] Commercially available products of component (C2) include, for example, “S-5”, “S-6”, “S-7”, “S-8”, “S-9”, “T-1”, “T-2”, “T-3”, “T-88”, “T-2000”, “ZR”, “Z-10”, “ZL”, “ZH”, “M-7”, “M-8”, “M-9”, “AX-30”, “AX-100”, “AX-200”, “BX-30”, “BX-100”, “BX-200”, “UP-16”, “UP-26”, “UP-37”, “UX-30”, “UX-100”, “UX-200”, “Rou S”, “KARIKORIKAN”, PS series, CS series, etc., all manufactured by Ina Food Industry Co., Ltd.

[0112] (water)

[0113] The composition of the present invention is an aqueous composition and therefore contains water. As water, deionized water or distilled water is preferred. Furthermore, tap water, groundwater, etc. sterilized by hypochlorous acid, etc. can be used within the range that does not impair the stability of the composition.

[0114] (content)

[0115] The content or amount of each component in the aqueous composition is preferably as follows from the viewpoint of the effect of improving the texture of the object to be treated and the improvement of the sustainability of the effect, especially the effect of suppressing hair tangling when used for hair treatment and the improvement of the sustainability of the effect.

[0116] The content of component (A) in the aqueous composition is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.05% by mass or more, further preferably 0.1% by mass or more, further more preferably 0.2% by mass or more, from the viewpoint of the ease of forming the polyion complex, the effect of improving the texture of the treated object and the continuous improvement of the effect, and particularly the effect of inhibiting the tangling of hair when used for hair treatment and the continuous improvement of the effect. In addition, from the viewpoint of the stability of the aqueous composition, it is preferably 3.0% by mass or less, more preferably 2.5% by mass or less, further preferably 2.0% by mass or less, further preferably 1.5% by mass or less, further more preferably 1.0% by mass or less. Moreover, the content of component (A) in the aqueous composition is preferably from 0.01 mass % to 3.0 mass %, more preferably from 0.02 mass % to 2.5 mass %, further preferably from 0.05 mass % to 2.0 mass %, further more preferably from 0.1 mass % to 1.5 mass %, further more preferably from 0.2 mass % to 1.5 mass %, further more preferably from 0.2 mass % to 1.0 mass %.

[0117] The content of component (B) in the aqueous composition is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, further preferably 0.02% by mass or more, further more preferably 0.04% by mass or more, from the viewpoint of the ease of forming the polyion complex, the effect of improving the texture of the treated object and the continuous improvement of the effect, and particularly the effect of inhibiting the tangling of hair when used for hair treatment and the continuous improvement of the effect. In addition, from the viewpoint of the stability of the aqueous composition, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, further preferably 1.5% by mass or less, further preferably 1.0% by mass or less, further more preferably 0.5% by mass or less, further more preferably 0.3% by mass or less, further more preferably 0.2% by mass or less, further more preferably 0.1% by mass or less. Moreover, the content of component (B) in the aqueous composition is preferably from 0.005 mass% to 3.0 mass%, more preferably from 0.01 mass% to 2.0 mass%, still more preferably from 0.02 mass% to 1.5 mass%, still more preferably from 0.02 mass% to 1.0 mass%, still more preferably from 0.02 mass% to 0.5 mass%, still more preferably from 0.02 mass% to 0.3 mass%, still more preferably from 0.02 mass% to 0.3 mass%, still more preferably from 0.02 mass% to 0.2 mass%, still more preferably from 0.02 mass% to 0.1 mass%, still more preferably from 0.04 mass% to 0.1 mass%.

[0118] The total content of component (A) and component (B) in the aqueous composition is preferably 0.02% by mass or more, more preferably 0.04% by mass or more, further preferably 0.05% by mass or more, further preferably 0.1% by mass or more, further preferably 0.2% by mass or more, further more preferably 0.3% by mass or more, from the viewpoint of the texture improvement effect of the treated object and the continuous improvement of the effect, particularly the tangle suppression effect of the hair when used for hair treatment and the continuous improvement thereof. In addition, from the viewpoint of the stability of the aqueous composition, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, further preferably 3.0% by mass or less, further more preferably 2.0% by mass or less. Moreover, the total content of component (A) and component (B) in the aqueous composition is preferably 0.02 mass% to 5.0 mass%, more preferably 0.04 mass% to 4.0 mass%, further preferably 0.05 mass% to 3.0 mass%, further preferably 0.1 mass% to 2.0 mass%, further more preferably 0.2 mass% to 2.0 mass%, further more preferably 0.3 mass% to 2.0 mass%.

[0119] Regarding the content ratio of the component (A) and the component (B) in the aqueous composition, from the viewpoint of the ease of forming the polyion complex, the effect of improving the texture of the treated object and the continuous improvement of the effect, and in particular, the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement of the effect, the mass ratio [(A) / (B)] of the component (A) to the component (B) is preferably 1.0 or more, more preferably 2.0 or more, further preferably 3.0 or more, further preferably 4.0 or more, further more preferably 5.0 or more, and preferably 30 or less, more preferably 20 or less, further preferably 15 or less, further more preferably 12 or less, further more preferably 10 or less. Furthermore, the mass ratio [(A) / (B)] is preferably 1.0 or more and 30 or less, more preferably 2.0 or more and 20 or less, further preferably 3.0 or more and 15 or less, further more preferably 4.0 or more and 12 or less, further more preferably 5.0 or more and 10 or less.

[0120] In the aqueous composition of the present invention, the mass ratio of component (A) to component (B) plays a greater role in the effect of the present invention than the cationic charge / anionic charge ratio of component (A) to component (B).

[0121] The ratio of the number of moles of the cationic charge of the component (A) to the number of moles of the anionic charge of the component (B) in the aqueous composition is preferably 10 / 90 to 95 / 5, more preferably 20 / 80 to 95 / 5, and even more preferably 25 / 75 to 90 / 10, from the viewpoint of the effect of improving the texture of the object to be treated and the sustainability of the effect, particularly the effect of suppressing hair tangling when used for hair treatment and the sustainability of the effect.

[0122] Regarding the content of component (C) in the aqueous composition, from the perspective of the texture improvement effect of the treated object and the persistence of the effect, especially the entanglement suppression effect of the hair when used for hair treatment and its persistence improvement, it is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, and further preferably 0.02% by mass or more. In addition, from the perspective of the stability of the aqueous composition, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and further preferably 3.0% by mass or less, and further more preferably 2.0% by mass or less. Moreover, the content of component (C) in the aqueous composition is preferably 0.005% by mass or more and 5.0% by mass or less, more preferably 0.01% by mass or more and 4.0% by mass or less, and further preferably 0.02% by mass or more and 3.0% by mass or less, and further more preferably 0.02% by mass or more and 2.0% by mass or less.

[0123] When the aqueous composition contains the component (C1), the content of the component (C1) in the aqueous composition is preferably 0.02% by mass or more, more preferably 0.04% by mass or more, further preferably 0.05% by mass or more, further preferably 0.1% by mass or more, further more preferably 0.2% by mass or more, further more preferably 0.3% by mass or more, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, particularly the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement. In addition, from the viewpoint of the stability of the aqueous composition, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, further preferably 3.0% by mass or less, further more preferably 2.0% by mass or less. Moreover, the content of component (C1) in the aqueous composition is preferably from 0.02 mass % to 5.0 mass %, more preferably from 0.04 mass % to 4.0 mass %, further preferably from 0.05 mass % to 3.0 mass %, further preferably from 0.1 mass % to 2.0 mass %, further more preferably from 0.2 mass % to 2.0 mass %, further more preferably from 0.3 mass % to 2.0 mass %.

[0124] When the aqueous composition contains component (C2), the content of component (C2) in the aqueous composition is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, and further preferably 0.02% by mass or more, from the perspective of the texture improvement effect of the treated object and the persistence of the effect, especially the tangle suppression effect of the hair when used for hair treatment and its persistence improvement. In addition, from the perspective of the stability of the aqueous composition, it is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, and further preferably 0.2% by mass or less, and further more preferably 0.1% by mass or less. Moreover, the content of component (C2) in the aqueous composition is preferably 0.005% by mass or more and 1.0% by mass or less, more preferably 0.01% by mass or more and 0.5% by mass or less, and further preferably 0.01% by mass or more and 0.2% by mass or less, and further more preferably 0.02% by mass or more and 0.1% by mass or less.

[0125] The mass ratio of the component (C) to the total amount of the component (A) and the component (B) in the aqueous composition [(C) / {(A)+(B)}] is preferably 0.01 or more, more preferably 0.02 or more, and even more preferably 0.03 or more, and is preferably 20 or less, more preferably 15 or less, even more preferably 10 or less, even more preferably 8.0 or less, even more preferably 5.0 or less, even more preferably 2.0 or less, and even more preferably 1.5 or less, from the viewpoint of the effect of improving the texture of the object to be treated and the sustained improvement of the effect, particularly the effect of suppressing hair tangling when used for hair treatment and the sustained improvement of the effect. Moreover, the mass ratio [(C) / {(A)+(B)}] is preferably 0.01 to 20, more preferably 0.02 to 15, further preferably 0.02 to 10, further preferably 0.02 to 8.0, further preferably 0.02 to 5.0, further preferably 0.02 to 2.0, further preferably 0.03 to 1.5.

[0126] When the aqueous composition contains the component (C1), the mass ratio of the component (C1) to the total amount of the component (A) and the component (B) in the aqueous composition [(C1) / {(A)+(B)}] is preferably 0.2 or more, more preferably 0.3 or more, further preferably 0.4 or more, further preferably 0.5 or more, further preferably 0.6 or more, further preferably 0.8 or more, and is preferably 20 or less, more preferably 15 or less, further preferably 10 or less, further preferably 8.0 or less, further preferably 5.0 or less, further preferably 2.0 or less, further preferably 1.5 or less, from the viewpoint of the effect of improving the texture of the treatment object and the sustained improvement of the effect, particularly the effect of suppressing tangling of hair when used for hair treatment and the sustained improvement of the effect. Moreover, the mass ratio [(C1) / {(A)+(B)}] is preferably 0.2 to 20, more preferably 0.3 to 15, further preferably 0.4 to 10, further preferably 0.5 to 8.0, further preferably 0.6 to 5.0, further preferably 0.8 to 2.0, further preferably 0.8 to 1.5.

[0127] When the aqueous composition contains component (C2), the mass ratio [(C2) / {(A)+(B)}] of component (C2) to the total amount of component (A) and component (B) in the aqueous composition is preferably 0.01 or more, more preferably 0.02 or more, and even more preferably 0.03 or more, and is preferably 1.0 or less, more preferably 0.5 or less, even more preferably 0.3 or less, and even more preferably 0.2 or less, from the viewpoint of the effect of improving the texture of the treated object and the sustainability of the effect, especially the effect of inhibiting the tangling of hair when used for hair treatment and the sustainability of the improvement. Furthermore, the mass ratio [(C2) / {(A)+(B)}] is preferably 0.01 or more and 1.0 or less, more preferably 0.02 or more and 0.5 or less, even more preferably 0.02 or more and 0.3 or less, and even more preferably 0.03 or more and 0.2 or less.

[0128] The water content in the aqueous composition is preferably 50% by mass or more, more preferably 70% by mass or more, further preferably 80% by mass or more, and further preferably 90% by mass or more, from the viewpoint of preparing the aqueous composition and the stability of the composition. The water content in the aqueous composition may be the remainder of components (A) to (C).

[0129] In addition, the composition of the present invention may contain, as optional components, a preservative, a pH adjuster (acid, base, or salt thereof), a salt compound (sodium chloride, etc.), an aqueous medium other than water, and the like.

[0130] (pH value)

[0131] The pH of the aqueous composition is preferably 3.0 or more, more preferably 3.2 or more, from the viewpoint of safety when applied to the body, as the pH of an aqueous solution obtained by diluting the aqueous composition 20 times with water at 25°C. In addition, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement of the effect, and the stability of the aqueous composition, it is preferably 7.5 or less, more preferably 7.0 or less, further preferably 6.0 or less, and further more preferably 5.0 or less.

[0132] The above pH value can be measured using a pH meter by the method described in Examples.

[0133] (Method for producing aqueous composition)

[0134] The method for producing the composition of the present invention is not particularly limited, but the following method is preferred from the viewpoints of the stability of the aqueous composition, the effect of improving the texture of the treated object and the improvement of the sustainability of the effect, especially the effect of suppressing the tangle of hair when used for hair treatment and the improvement of the sustainability of the effect, the stability of the aqueous composition, and the viewpoint of production efficiency.

[0135] When component (C1) is used as component (C), a method comprising the steps of dissolving or dispersing component (B) and component (C1) in water to prepare a mixed solution containing component (B) and component (C1), and then mixing the mixed solution with component (A) or its aqueous solution is preferred. By this method, component (C1) is retained in a cross-linked structure formed by ionic interaction between component (A) and component (B), and a network structure can be efficiently formed.

[0136] When a pH adjuster is added, it is preferred that the pH adjuster is added to the mixed solution containing the components (B) and (C1) to adjust the pH to a desired value, and then mixed with the component (A) or its aqueous solution.

[0137] The mixing conditions when mixing components (A) to (C1) are not particularly limited, and the mixing can usually be carried out at 5 to 60° C. for 0.1 to 12 hours using a known stirring apparatus.

[0138] When component (C2) is used as component (C), it is preferably produced by a method comprising the steps of separately preparing an aqueous solution of component (A), an aqueous solution of component (B), and an aqueous solution of component (C2), and then mixing these aqueous solutions. Furthermore, when components (B1) and (B2) are used in combination as component (B), it is preferably separately preparing an aqueous solution of component (B1) and an aqueous solution of component (B2), and then mixing them with the aqueous solution of component (C2).

[0139] Furthermore, when the aqueous composition does not contain the (C1) nonionic polymer but contains only (C2) agar as the component (C), the method for producing the composition of the present invention preferably includes the steps of mixing the aqueous solution of the component (A) and the aqueous solution of the component (C2) under heating conditions preferably at 50° C. to 100° C., more preferably at 60° C. to 95° C. to prepare a mixed solution, and then mixing the mixed solution with the aqueous solution of the component (B). It is believed that this method can efficiently form a higher strength network composed of the components (A), (B) and (C2).

[0140] When a pH adjuster such as an acid is added, it is preferred that the pH adjuster is added to a mixed solution obtained by mixing an aqueous solution of component (A) and an aqueous solution of component (C2) to adjust the pH to a desired value, and then mixed with an aqueous solution of component (B).

[0141] [Cosmetic composition]

[0142] The present invention further provides a cosmetic composition comprising the aqueous composition for body use. By applying the cosmetic composition of the present invention to a treatment object, the texture-enhancing effect of the treatment object and the sustainability of the effect can be enhanced. In particular, when the cosmetic composition of the present invention is used for hair treatment, the tangle-reducing effect of the hair and the sustainability of the effect can be enhanced.

[0143] Examples of the type of cosmetic composition include skin cosmetic compositions and hair cosmetic compositions. From the viewpoint of enhancing the effect of preventing hair tangles and the duration of the effect, hair cosmetic compositions are preferred.

[0144] The aqueous composition for body use can be used directly as a cosmetic composition. In addition, the aqueous composition for body use can also be used as a premix of a cosmetic composition. For example, various cosmetic compositions can be prepared by adding additional ingredients to the aqueous composition.

[0145] In the aqueous composition, since the components (A) to (C) are stably present in the state of forming the above-mentioned network, the network is not easily destroyed even if additional components are added. Therefore, it is believed that the cosmetic composition containing the aqueous composition can maintain the effect of improving the texture of the treated object and the effect of maintaining the effect of improving the texture of the treated object.

[0146] The content of the aqueous composition for body use in the cosmetic composition is usually 1% by mass to 80% by mass, preferably 10% by mass to 60% by mass. The contents of components (A) to (C) in the cosmetic composition are preferably within the following ranges.

[0147] The content of the component (A) in the cosmetic composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, and further preferably 0.01% by mass or more, and further preferably 0.05% by mass or more, from the perspective of the texture improvement effect of the treated object and the continuous improvement of the effect, especially the tangle suppression effect of the hair when used for hair treatment and the continuous improvement. In addition, from the perspective of the stability of the composition and the perspective of exerting its effect when combined with additional components, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, further preferably 1.5% by mass or less, and further preferably 1.0% by mass or less. Moreover, the content of the component (A) in the cosmetic composition is preferably 0.001% by mass or more and 3.0% by mass or less, more preferably 0.005% by mass or more and 2.0% by mass or less, further preferably 0.01% by mass or more and 1.5% by mass or less, further more preferably 0.05% by mass or more and 1.5% by mass or less, and further more preferably 0.05% by mass or more and 1.0% by mass or less.

[0148] The content of the component (B) in the cosmetic composition is preferably 0.0005% by mass or more, more preferably 0.001% by mass or more, further preferably 0.01% by mass or more, further preferably 0.02% by mass or more, from the viewpoint of the effect of improving the texture of the object to be treated and the continuous improvement of the effect, particularly the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement of the effect. In addition, from the viewpoint of the stability of the composition and the viewpoint of exerting the effect when adding additional components, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, further preferably 1.5% by mass or less, further preferably 1.0% by mass or less, further more preferably 0.5% by mass or less, further more preferably 0.3% by mass or less, further more preferably 0.2% by mass or less, further more preferably 0.1% by mass or less. Furthermore, the content of component (B) in the cosmetic composition is preferably from 0.0005% by mass to 3.0% by mass, more preferably from 0.001% by mass to 2.0% by mass, still more preferably from 0.01% by mass to 1.5% by mass, still more preferably from 0.02% by mass to 1.0% by mass, still more preferably from 0.02% by mass to 0.5% by mass, still more preferably from 0.02% by mass to 0.3% by mass, still more preferably from 0.02% by mass to 0.2% by mass, still more preferably from 0.02% by mass to 0.1% by mass.

[0149] The total content of component (A) and component (B) in the cosmetic composition is preferably 0.0015% by mass or more, more preferably 0.01% by mass or more, further preferably 0.02% by mass or more, further more preferably 0.05% by mass or more, from the viewpoint of the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing the tangling of hair when used for hair treatment and the continuous improvement of the effect. In addition, from the viewpoint of the stability of the composition and the viewpoint of exerting the effect when adding additional ingredients, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, further preferably 2.0% by mass or less, further more preferably 1.5% by mass or less. The total content of component (A) and component (B) in the cosmetic composition is preferably from 0.0015% by mass to 5.0% by mass, more preferably from 0.01% by mass to 4.0% by mass, further preferably from 0.02% by mass to 4.0% by mass, further preferably from 0.05% by mass to 2.0% by mass, further more preferably from 0.05% by mass to 1.5% by mass.

[0150] The content of the component (C) in the cosmetic composition is preferably 0.001% by mass or more, more preferably 0.002% by mass or more, and more preferably 0.005% by mass or more, and more preferably 0.01% by mass or more, from the perspective of the texture improvement effect of the treated object and the continuous improvement of the effect, especially the tangle suppression effect of the hair when used for hair treatment and its continuous improvement. In addition, from the perspective of the stability of the composition and the perspective of exerting its effect when combined with additional components, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and more preferably 2.0% by mass or less, and more preferably 1.5% by mass or less. Moreover, the content of the component (C) in the cosmetic composition is preferably 0.001% by mass or more and 5.0% by mass or less, more preferably 0.002% by mass or more and 4.0% by mass or less, and more preferably 0.005% by mass or more and 4.0% by mass or less, and more preferably 0.005% by mass or more and 2.0% by mass or less, and more preferably 0.01% by mass or more and 1.5% by mass or less.

[0151] Examples of the additional ingredients to be added to the cosmetic composition include ingredients commonly added to skin cosmetic compositions or hair cosmetic compositions, such as surfactants, higher alcohols, oils, organic acids or inorganic acids, aqueous media, pH adjusters, feel-enhancing agents, colorants, antioxidants, antidandruff agents, vitamins, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizers, pearlescent agents, ceramides, fragrances, plant extracts, ultraviolet absorbers, and the like.

[0152] When the cosmetic composition contains an oily component such as a higher alcohol or an oil agent, the cosmetic composition may be in the form of an emulsified composition. From the viewpoint of stability of the composition and improvement of the feeling during use, the emulsified composition is preferably an oil-in-water emulsified composition.

[0153] The method for producing the cosmetic composition in the form of an emulsion composition is not particularly limited. For example, the following methods can be cited: the aqueous composition and the oily phase containing the oily component are mixed, and then the aqueous phase containing the aqueous component other than the aqueous composition and / or other oily components are added and mixed as needed; the oily phase containing the oily component and the aqueous phase containing the aqueous component other than the aqueous composition are mixed, and then the aqueous composition is added and mixed; etc. From the viewpoint of producing an emulsion composition with high stability, the effect of improving the texture of the treated object and the continuous improvement of the effect, especially the effect of suppressing the tangle of hair when used for hair treatment and the continuous improvement of the effect, it is preferred to produce the emulsion composition by mixing the aqueous composition and the oily phase containing the oily component, and then adding the aqueous phase containing the aqueous component other than the aqueous composition and / or other oily components as needed.

[0154] The “aqueous phase” referred to herein means a phase constituting a water phase in the production process of the emulsified composition, and the “oil phase” means a phase constituting an oil phase in the production process of the emulsified composition.

[0155] In addition, as the oily component contained in the oily phase mentioned here, preferably, ionic surfactants and amphiphilic substances having a hydrophobic group can be exemplified. As the ionic surfactant, anionic surfactants, cationic surfactants, and amphoteric surfactants are exemplified, and as the amphiphilic substance having a hydrophobic group, higher alcohols are exemplified. As the "aqueous component other than the aqueous composition", organic acids or inorganic acids, aqueous media, etc. can be exemplified, and as the "other oily components", oil agents can be exemplified. Furthermore, other components exemplified as "additional components" can be appropriately used in the emulsified composition.

[0156] Among cosmetic compositions, examples of product forms of skin cosmetic compositions include body wash, facial cleanser, bath preparation, deodorant preparation, makeup cosmetics, sunscreen, foundation, emulsion, beauty serum, cream, and the like.

[0157] In addition, examples of product forms of the hair cosmetic composition include shampoo, hair rinse, hair conditioner, hair treatment (including leave-in type), styling agent, hair dye, and hair perm. Among these, hair conditioner, hair treatment, or styling agent is preferred from the viewpoint of effectiveness of the effect of the present invention.

[0158] [Hair treatment methods]

[0159] The present invention further provides a hair treatment method comprising the steps of applying the above-mentioned cosmetic composition to hair and then heating the hair to a temperature of 80° C. or higher. According to the hair treatment method of the present invention, by applying the above-mentioned cosmetic composition to hair and then heating the hair, the hydrogen bond between component (B) and component (C) formed in the film on the surface of the hair becomes stronger, and therefore it is considered that the sustainability of the effect of inhibiting hair tangle can be further improved.

[0160] In the hair treatment method of the present invention, the above-mentioned cosmetic composition is first applied to the hair. Examples of the method for applying the cosmetic composition include a method of applying, casting or spraying the cosmetic composition on the hair, a method of immersing the hair in the cosmetic composition, etc., and a method of applying the cosmetic composition to the hair is preferred.

[0161] As a specific example of the method of applying the cosmetic composition to the hair, when the cosmetic composition is shampoo, the steps of applying the shampoo to the hair, foaming the hair, and then rinsing the hair are performed. When the cosmetic composition is a hair conditioner, a hair conditioner, a hair treatment agent, or a hair mask, for example, these are applied to washed hair, blended, and then rinsed off as necessary.

[0162] The hair may be in a dry state or a wet state when the cosmetic composition is applied, but the hair is preferably in a wet state.

[0163] The amount of the cosmetic composition applied to the hair is preferably 0.005 or more, more preferably 0.01 or more, even more preferably 0.05 or more, and is preferably 20 or less, more preferably 15 or less, even more preferably 12 or less in terms of bath ratio relative to the mass of the applied hair (mass of the cosmetic composition / dry mass of the applied hair).

[0164] The hair to which the cosmetic composition is applied may be the entire hair or a part of the hair.

[0165] It is preferred that after applying the cosmetic composition to the hair, before heating the hair, a step of rinsing the cosmetic composition with water is performed. In this case, in order to allow the cosmetic composition to be fully integrated into the hair, a time may be set after applying the cosmetic composition before rinsing with water. The time of leaving is preferably 15 seconds or more, more preferably 30 seconds or more, and even more preferably 1 minute or more, and is preferably 20 minutes or less, and even more preferably 15 minutes or less.

[0166] The time for rinsing the cosmetic composition with water is preferably 5 seconds to 3 minutes. The temperature of the water may be such that it does not cause any burden on the body, and is preferably 15°C to 50°C, and more preferably 25°C to 45°C.

[0167] The hair after application of the cosmetic composition is preferably dried with a towel or a hair dryer, and then heated.

[0168] As a method of heating the hair, a method of using an ion clip is preferred. The heating temperature of the hair is 80° C. or higher, preferably 100° C. or higher, more preferably 120° C. or higher, and further preferably 140° C. or higher from the viewpoint of further improving the sustainability of the effect of suppressing hair tangling. From the viewpoint of suppressing hair damage, the heating temperature is preferably 220° C. or lower, more preferably 200° C. or lower.

[0169] The hair treated by the above method can easily maintain the effect of being less tangled even if the hair is washed repeatedly.

[0170] Regarding the above-mentioned embodiment, the present invention discloses the following.

[0171] <1>

[0172] A body aqueous composition comprising: (A) a cationic polymer having a viscosity of 1% by mass aqueous solution at 30°C of 1,000 mPa·s or more, (B) an anionic polymer, (C) at least one selected from (C1) a nonionic polymer and (C2) agar, and water.

[0173] <2>

[0174] The aqueous body composition as described in <1>, wherein the viscosity of a 1 mass % aqueous solution of the component (A) at 30°C is preferably from 1,000 mPa·s to 100,000 mPa·s, more preferably from 1,300 mPa·s to 80,000 mPa·s, further preferably from 1,500 mPa·s to 50,000 mPa·s, further preferably from 1,700 mPa·s to 30,000 mPa·s, further preferably from 1,800 mPa·s to 25,000 mPa·s.

[0175] <3>

[0176] The aqueous body composition as described in <1> or <2>, wherein the cationic charge density of the component (A) is preferably from 0.1 mmol / g to 20 mmol / g, more preferably from 0.2 mmol / g to 15 mmol / g, from 0.2 mmol / g to 12 mmol / g, still more preferably from 0.3 mmol / g to 10 mmol / g, still more preferably from 0.3 mmol / g to 7.0 mmol / g, still more preferably from 0.5 mmol / g to 5.0 mmol / g.

[0177] <4>

[0178] The aqueous body composition according to any one of <1> to <3>, wherein the component (A) is one or more selected from the group consisting of cationized polyvinyl alcohol, polyethyleneimine, methacryloylethyltrimethylammonium salt polymer, quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamidepropyltrimethylammonium salt polymer, vinylimidazolium trichloride·vinyl pyrrolidone copolymer (polyquaternium-16), vinyl pyrrolidone·alkylamino (meth)acrylate copolymer, vinyl pyrrolidone·alkylamino (meth)acrylate·vinyl caprolactam copolymer, alkylacrylamide·(meth)acrylate·alkylaminoalkylacrylamide·polyethylene glycol (meth)acrylate copolymer, and adipic acid·dimethylaminohydroxypropylethylenetriamine copolymer, wherein the viscosity of the 1% by mass aqueous solution at 30°C is 1,000 mPa·s or more.

[0179] <5>

[0180] The aqueous body composition according to any one of <1> to <4>, wherein the component (A) is a polymer comprising a structural unit represented by the following general formula (1),

[0181]

[0182] In formula (1), R 1 is a hydrogen atom or a methyl group, R 2 ~R 4 Each independently represents an alkyl group having 1 to 4 carbon atoms; X represents -O- or -NH-, and m represents a number of 1 to 4.

[0183] <6>

[0184] The aqueous body composition as described in <5>, wherein the structural unit represented by the general formula (1) is one or more selected from the group consisting of structural units derived from methacryloylethyltrimethylammonium salt, structural units derived from N,N-dimethylaminoethylmethacrylate diethylsulfate, and structural units derived from methacrylamidopropyltrimethylammonium salt, and preferably one or more selected from the group consisting of structural units derived from methacryloylethyltrimethylammonium salt and structural units derived from N,N-dimethylaminoethylmethacrylate diethylsulfate.

[0185] <7>

[0186] The aqueous composition for body use according to <5> or <6>, wherein the content of the structural unit represented by the general formula (1) in the component (A) is 8.0 mol% to 100 mol%.

[0187] <8>

[0188] The aqueous body composition as described in any one of <1> to <7>, wherein the component (A) is preferably at least one selected from methacryloylethyl trimethyl ammonium salt polymers and quaternized dialkylaminoalkyl (meth)acrylate polymers, and more preferably selected from methacryloylethyl trimethyl ammonium chloride polymers (Polyquaternium-37), methacryloylethyl dimethyl betaine·methacryloylethyl trimethyl ammonium chloride·methoxy polyethylene glycol methacrylate copolymer (Polyquaternium-49), methacryloylethyl dimethyl betaine·methacryloylethyl trimethyl ammonium chloride·methoxy polyethylene glycol methacrylate copolymer (Polyquaternium-50), Preferably, the present invention is at least one selected from trimethylammonium chloride·2-hydroxyethyl methacrylate copolymer (Polyquaternium-48), N,N-dimethylaminoethyl methacrylate diethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer (Polyquaternium-52), and more preferably at least one selected from methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37) and N,N-dimethylaminoethyl methacrylate diethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer (Polyquaternium-52).

[0189] <9>

[0190] The aqueous composition for body use according to any one of <1> to <8>, wherein the component (B) comprises: (B1) at least one selected from a cross-linked polymer comprising a structural unit derived from (meth)acrylic acid and anionic polysaccharides.

[0191] <10>

[0192] The aqueous body composition as described in <9>, wherein the cross-linked polymer containing a structural unit derived from (meth)acrylic acid is selected from a homopolymer or copolymer of (meth)acrylic acid having a cross-linked structure, or a salt thereof, and is preferably selected from one or more of a carboxyvinyl polymer or a salt thereof, an (acrylate / alkyl (C10-30) acrylate) cross-linked polymer, a (Na acrylate / acryloyldimethyl taurine / dimethyl acrylamide) cross-linked polymer, and an acrylate cross-linked polymer-4.

[0193] <11>

[0194] The aqueous composition for body use according to <9> or <10>, wherein the anionic polysaccharide is one or more selected from polysaccharides having a carboxyl group, polysaccharide sulfates, and salts thereof.

[0195] <12>

[0196] The aqueous body composition as described in any one of <1> to <11>, wherein the component (B1) is preferably one or more selected from carboxyvinyl polymers, (acrylate / alkyl acrylate (C10-30) ester) crosslinked polymers, and anionic polysaccharides, more preferably anionic polysaccharides or salts thereof, and even more preferably alginic acid or salts thereof.

[0197] <13>

[0198] The aqueous body composition as described in any one of <9> to <12>, wherein the anion charge density of the above-mentioned component (B1) is preferably from 1.0 mmol / g to 25 mmol / g, more preferably from 2.0 mmol / g to 20 mmol / g, and further preferably from 3.5 mmol / g to 15 mmol / g.

[0199] <14>

[0200] The aqueous body composition as described in any one of <9> to <13>, wherein the weight average molecular weight (Mw) of the anionic polysaccharide is preferably from 2,000 to 3,500,000, more preferably from 10,000 to 3,000,000, further preferably from 30,000 to 3,000,000, further preferably from 50,000 to 3,000,000.

[0201] <15>

[0202] The aqueous composition for body use as described in any one of <9> to <14>, wherein the content of the component (B1) in the component (B) is preferably 50 mass % or more, more preferably 60 mass % or more, further preferably 70 mass % or more, further more preferably 80 mass % or more, and is 100 mass % or less.

[0203] <16>

[0204] The aqueous composition for body use according to any one of <9> to <15>, wherein the component (B) further comprises: (B2) an anionic polymer other than the component (B1).

[0205] <17>

[0206] In the aqueous body composition as described in <16>, the molecular weight of the component (B2) is preferably from 1,000 to 50,000, more preferably from 1,000 to 30,000, further preferably from 2,000 to 30,000, further more preferably from 5,000 to 30,000, further more preferably from 10,000 to 30,000.

[0207] <18>

[0208] The aqueous body composition as described in <16> or <17>, wherein the component (B2) is preferably a polymer having a carboxyl group and having a molecular weight of 1,000 to 50,000, more preferably 1,000 to 30,000, and more preferably a non-crosslinked polymer having a molecular weight of 1,000 to 30,000 containing a structural unit derived from (meth)acrylic acid.

[0209] <19>

[0210] The aqueous composition for body use according to any one of <16> to <18>, wherein the component (B2) is at least one selected from poly(meth)acrylic acid, (meth)acrylic acid / alkyl (meth)acrylate copolymers, and salts thereof.

[0211] <20>

[0212] The aqueous body composition as described in any one of <16> to <19>, wherein the anion charge density of the above-mentioned component (B2) is preferably from 1.0 mmol / g to 25 mmol / g, more preferably from 3.0 mmol / g to 20 mmol / g, and further preferably from 5.0 mmol / g to 15 mmol / g.

[0213] <21>

[0214] The aqueous body composition as described in any one of <16> to <20>, wherein the content of the component (B2) in the component (B) is preferably from 1 mass % to 50 mass %, more preferably from 2 mass % to 40 mass %, further preferably from 3 mass % to 30 mass %, further more preferably from 5 mass % to 20 mass %.

[0215] <22>

[0216] The aqueous body composition as described in any one of <16> to <21>, wherein the mass ratio of the above-mentioned component (B2) to the total amount of the above-mentioned component (B1) and the above-mentioned component (B2) [(B2) / {(B1)+(B2)}] is preferably 0.01 to 1.0, more preferably 0.02 to 0.80, further preferably 0.05 to 0.50, further preferably 0.08 to 0.30, further more preferably 0.10 to 0.15.

[0217] <23>

[0218] The aqueous body composition as described in any one of <1> to <22>, wherein the above-mentioned component (C1) is one or more selected from polyalkylene glycol or its derivatives, polymers containing structural units derived from vinyl pyrrolidone, polymers containing structural units derived from (meth)acrylates, polyvinyl alcohol, polyacrylamide and polycaprolactam, preferably one or more selected from polyalkylene glycol or its derivatives and polymers containing structural units derived from vinyl pyrrolidone, more preferably one or more selected from polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol copolymers, mono- or di-fatty acid esters thereof, and polyvinyl pyrrolidone, further preferably one or more selected from polyethylene glycol, polyethylene glycol-polypropylene glycol copolymers, mono- or di-fatty acid esters thereof, and polyvinyl pyrrolidone, and further more preferably one or more selected from polyethylene glycol, polyethylene glycol-polypropylene glycol copolymers, polyethylene glycol distearate (polyethylene glycol distearate) and polyvinyl pyrrolidone.

[0219] <24>

[0220] The aqueous body composition according to any one of <1> to <23>, wherein the weight average molecular weight of the component (C1) is preferably 2,000 to 2,000,000, more preferably 5,000 to 1,500,000, and even more preferably 10,000 to 1,500,000.

[0221] <25>

[0222] The aqueous body composition according to any one of <1> to <24>, wherein the gel strength of a 1.5% aqueous solution of the component (C2) is preferably from 10 g to 1,500 g, more preferably from 50 g to 1,000 g, further preferably from 100 g to 800 g, further more preferably from 200 g to 800 g.

[0223] <26>

[0224] The aqueous body composition as described in any one of <1> to <25>, wherein the content of the above-mentioned component (A) in the above-mentioned aqueous body composition is preferably 0.01 mass% to 3.0 mass%, more preferably 0.02 mass% to 2.5 mass%, further preferably 0.05 mass% to 2.0 mass%, further preferably 0.1 mass% to 1.5 mass%, further more preferably 0.2 mass% to 1.5 mass%, further more preferably 0.2 mass% to 1.0 mass%.

[0225] <27>

[0226] The aqueous body composition as described in any one of <1> to <26>, wherein the content of the above-mentioned component (B) in the above-mentioned aqueous body composition is preferably 0.005 mass% to 3.0 mass%, more preferably 0.01 mass% to 2.0 mass%, further preferably 0.02 mass% to 1.5 mass%, further preferably 0.02 mass% to 1.0 mass%, further preferably 0.02 mass% to 0.5 mass%, further preferably 0.02 mass% to 0.3 mass%, further preferably 0.02 mass% to 0.3 mass%, further preferably 0.02 mass% to 0.2 mass%, further more preferably 0.02 mass% to 0.1 mass%, further more preferably 0.04 mass% to 0.1 mass%.

[0227] <28>

[0228] The aqueous body composition as described in any one of <1> to <27>, wherein the total content of the above-mentioned component (A) and the above-mentioned component (B) in the above-mentioned aqueous body composition is preferably 0.02 mass% to 5.0 mass%, more preferably 0.04 mass% to 4.0 mass%, further preferably 0.05 mass% to 3.0 mass%, further preferably 0.1 mass% to 2.0 mass%, further more preferably 0.2 mass% to 2.0 mass%, further more preferably 0.3 mass% to 2.0 mass%.

[0229] <29>

[0230] The aqueous body composition as described in any one of <1> to <28>, wherein the mass ratio of the above-mentioned component (A) to the above-mentioned component (B) [(A) / (B)] in the above-mentioned aqueous body composition is preferably 1.0 to 30, more preferably 2.0 to 20, further preferably 3.0 to 15, further preferably 4.0 to 12, and further preferably 5.0 to 10.

[0231] <30>

[0232] The aqueous body composition as described in any one of <1> to <29>, wherein the ratio of the molar number of the cationic charge of the above-mentioned component (A) to the molar number of the anionic charge of the above-mentioned component (B) in the above-mentioned aqueous body composition is preferably 10 / 90 to 95 / 5, more preferably 20 / 80 to 95 / 5, and even more preferably 25 / 75 to 90 / 10.

[0233] <31>

[0234] The aqueous body composition as described in any one of <1> to <30>, wherein the content of component (C) in the aqueous body composition is preferably from 0.005 mass % to 5.0 mass %, more preferably from 0.01 mass % to 4.0 mass %, further preferably from 0.02 mass % to 3.0 mass %, further more preferably from 0.02 mass % to 2.0 mass %.

[0235] <32>

[0236] The aqueous body composition as described in any one of <1> to <31>, wherein the content of component (C1) in the above aqueous body composition is preferably 0.02 mass% to 5.0 mass%, more preferably 0.04 mass% to 4.0 mass%, further preferably 0.05 mass% to 3.0 mass%, further preferably 0.1 mass% to 2.0 mass%, further more preferably 0.2 mass% to 2.0 mass%, further more preferably 0.3 mass% to 2.0 mass%.

[0237] <33>

[0238] The aqueous body composition as described in any one of <1> to <32>, wherein the content of component (C2) in the aqueous body composition is preferably 0.005 mass% to 1.0 mass%, more preferably 0.01 mass% to 0.5 mass%, further preferably 0.01 mass% to 0.2 mass%, further more preferably 0.02 mass% to 0.1 mass%.

[0239] <34>

[0240] The aqueous body composition as described in any one of <1> to <33>, wherein the mass ratio of the above-mentioned component (C) to the total amount of the above-mentioned component (A) and the above-mentioned component (B) in the above-mentioned aqueous body composition [(C) / {(A)+(B)}] is preferably 0.01 to 20, more preferably 0.02 to 15, further preferably 0.02 to 10, further preferably 0.02 to 8.0, further preferably 0.02 to 5.0, further preferably 0.02 to 2.0, further preferably 0.03 to 1.5.

[0241] <35>

[0242] The aqueous body composition as described in any one of <1> to <34>, wherein the mass ratio of the above-mentioned component (C1) to the total amount of the above-mentioned component (A) and the above-mentioned component (B) in the above-mentioned aqueous body composition [(C1) / {(A)+(B)}] is preferably 0.2 to 20, more preferably 0.3 to 15, further preferably 0.4 to 10, further preferably 0.5 to 8.0, further preferably 0.6 to 5.0, further preferably 0.8 to 2.0, further preferably 0.8 to 1.5.

[0243] <36>

[0244] The aqueous body composition as described in any one of <1> to <35>, wherein the mass ratio [(C2) / {(A)+(B)}] of the component (C2) to the total amount of the component (A) and the component (B) in the aqueous body composition is preferably 0.01 to 1.0, more preferably 0.02 to 0.5, further preferably 0.02 to 0.3, and further more preferably 0.03 to 0.2.

[0245] <37>

[0246] The aqueous composition for body as described in any one of <1> to <36>, wherein the content of water in the aqueous composition for body is preferably 50 mass % or more, more preferably 70 mass % or more, further preferably 80 mass % or more, further more preferably 90 mass % or more.

[0247] <38>

[0248] The aqueous body composition as described in any one of <1> to <37>, wherein the pH value of an aqueous solution prepared by diluting the aqueous body composition 20 times with water at 25°C is preferably 3.0 or more, more preferably 3.2 or more, preferably 7.5 or less, more preferably 7.0 or less, further preferably 6.0 or less, and further more preferably 5.0 or less.

[0249] <39>

[0250] A method for producing an aqueous body composition as described in any one of <1> to <38>, comprising: dissolving or dispersing the above-mentioned component (B) and the above-mentioned component (C) in water to prepare a mixed solution containing the above-mentioned component (B) and the above-mentioned component (C), and then mixing the mixed solution with the above-mentioned component (A) or its aqueous solution.

[0251] <40>

[0252] A cosmetic composition comprising: the aqueous composition for body according to any one of <1> to <39>.

[0253] <41>

[0254] The cosmetic composition as described in <40>, wherein the content of the aqueous composition for body use in the cosmetic composition is 1 mass % to 80 mass %, preferably 10 mass % to 60 mass %.

[0255] <42>

[0256] The cosmetic composition as described in <40> or <41>, wherein the content of the above-mentioned component (A) in the above-mentioned cosmetic composition is preferably 0.001 mass% to 3.0 mass%, more preferably 0.005 mass% to 2.0 mass%, further preferably 0.01 mass% to 1.5 mass%, further more preferably 0.05 mass% to 1.5 mass%, further more preferably 0.05 mass% to 1.0 mass%.

[0257] <43>

[0258] The cosmetic composition as described in any one of <40> to <42>, wherein the content of the above-mentioned component (B) in the above-mentioned cosmetic composition is preferably 0.0005 mass% to 3.0 mass%, more preferably 0.001 mass% to 2.0 mass%, further preferably 0.01 mass% to 1.5 mass%, further preferably 0.02 mass% to 1.0 mass%, further preferably 0.02 mass% to 0.5 mass%, further preferably 0.02 mass% to 0.3 mass%, further preferably 0.02 mass% to 0.2 mass%, further preferably 0.02 mass% to 0.1 mass%.

[0259] <44>

[0260] The cosmetic composition as described in any one of <40> to <43>, wherein the total content of the above-mentioned component (A) and the above-mentioned component (B) in the above-mentioned cosmetic composition is preferably 0.0015 mass% to 5.0 mass%, more preferably 0.01 mass% to 4.0 mass%, further preferably 0.02 mass% to 4.0 mass%, further more preferably 0.05 mass% to 2.0 mass%, further more preferably 0.05 mass% to 1.5 mass%.

[0261] <45>

[0262] The cosmetic composition as described in any one of <40> to <44>, wherein the content of the above-mentioned component (C) in the above-mentioned cosmetic composition is preferably 0.001 mass% to 5.0 mass%, more preferably 0.002 mass% to 4.0 mass%, further preferably 0.005 mass% to 4.0 mass%, further more preferably 0.005 mass% to 2.0 mass%, further more preferably 0.01 mass% to 1.5 mass%.

[0263] <46>

[0264] A method for treating hair, comprising: applying the cosmetic composition according to any one of <40> to <45> to hair, and then heating the hair to a temperature of 80° C. or higher.

[0265] <47>

[0266] The hair treatment method as described in <46>, wherein the amount of the cosmetic composition applied to the hair is preferably 0.005 or more, more preferably 0.01 or more, even more preferably 0.05 or more, and is preferably 20 or less, more preferably 15 or less, even more preferably 12 or less, in terms of bath ratio relative to the mass of the applied hair (mass of the cosmetic composition / dry mass of the applied hair).

[0267] <48>

[0268] The hair treatment method according to <46> or <47>, wherein after applying the cosmetic composition to the hair, the cosmetic composition is rinsed off with water before heating the hair.

[0269] <49>

[0270] The hair treatment method according to any one of <46> to <48>, wherein the heating temperature of the hair is preferably 100°C or higher, more preferably 120°C or higher, further preferably 140°C or higher, and is preferably 220°C or lower, more preferably 200°C or lower.

[0271] [Example]

[0272] Hereinafter, the present invention will be described using examples, but the present invention is not limited to the scope of the examples. In addition, each measurement and evaluation in the examples were performed by the following methods.

[0273] (Measurement of Viscosity of 1 Mass % Aqueous Solution of Cationic Polymer)

[0274] A 1 mass % aqueous solution of the active ingredient of the cationic polymer (component (A) or component (A')) used in each example was prepared, and the viscosity of the aqueous solution at 30° C. was measured using a B-type viscometer (TVB-10 manufactured by Toki Sangyo Co., Ltd.). In the present example, the cationic polymer other than component (A) is described as "component (A')".

[0275] (pH determination)

[0276] The aqueous composition of each example was diluted 20 times with water, and the pH value at 25° C. was measured using a pH meter (F-51, manufactured by Horiba, Ltd.).

[0277] (Preparation for damaged hair)

[0278] Mix 7 mL of "Kao Bubble Blend L" (Part 1) and 15 mL of "Kao Bubble Hair Color D" (Part 2) manufactured by Kao Corporation and apply to a 20 cm long, 20 g mass Japanese hair tress. After standing for 20 minutes, rinse thoroughly with warm water at 35 to 40°C (bleaching treatment). Thereafter, rinse twice with a normal shampoo of the following composition. Repeat this bleaching treatment 4 times to prepare a damaged hair tress for evaluation.

[0279] (Measurement of Combing Force Immediately After Treatment with Aqueous Composition)

[0280] (1) 20 g of damaged hair bundle was made to contain 10 g±0.5 g of water, 4 mL of the aqueous composition of each example was applied, mixed by hand and left for 30 seconds, and then washed with warm water at 35 to 40° C. for 15 seconds.

[0281] (2) The water content of the washed hair bundle was adjusted to 10 g, and the hair bundle was combed with a brush to completely untangle it. Then, the hair bundle was placed on a combing force measuring device ("KOT-0303" manufactured by Utsunomiya Seiki Co., Ltd.), and a professional comb SL-801 (manufactured by Sanbi Industries Co., Ltd.) was passed through the uppermost part of the hair bundle. The hair bundle was combed manually at a constant speed (60 rpm) to measure the load (g) applied when the hair bundle was combed through to the ends of the hair. The combing was performed 50 times, and the average value of the combing load at a total of 50 points was taken as the value of "combing force immediately after treatment". The smaller the combing force value, the less likely the hair is to be tangled, which is a good result. The combing load of the damaged hair bundle (water content 10 g ± 0.5 g) not treated with the aqueous composition was 1568 g.

[0282] [Ordinary shampoo composition]

[0283]

[0284]

[0285] (*1) 42.0% by mass in the form of Emal E-27C (manufactured by Kao Corporation, active ingredient 27% by mass)

[0286] (*2) AMINON C-11S (manufactured by Kao Corporation)

[0287] (Measurement of combing force after treatment with aqueous composition + 2 shampooing)

[0288] After performing (1) and (2) in the above-mentioned "Measurement of Combing Force Immediately After Treatment", perform (3) two or less times.

[0289] (3) After drying with a towel and a hair dryer, wet the hair again with water, and use 1 mL of the above-mentioned ordinary shampoo to scrub the inside and outside of the hair 20 times each within 30 seconds, and rinse for 15 seconds.

[0290] Thereafter, the operation of (2) was performed to measure the combing force. If the combing force was 850 g or less, the sustainability was judged to be good.

[0291] (Measurement of combing force after treatment with aqueous composition + 4 shampooing)

[0292] After performing (1) to (2) in the above "Measurement of combing force immediately after treatment", perform (3) 4 times and then perform (2) again to measure the combing force. The smaller the combing force value, the better the sustainability. If the combing force is 950 g or less, the sustainability is judged to be even better.

[0293] (Measurement of combing force after treatment with aqueous composition + heat treatment + 4 shampooing)

[0294] After performing (1) to (2) in the above "Measurement of Combing Force Immediately After Treatment", the hair bundle was dried with a towel and a hair dryer. Then, while applying tension with a comb, the hair bundle was straightened 10 times with a flat iron ("VOSS GF (L41)" manufactured by GOLDWELL) set at 180°C (heat treatment). After the heat treatment, (3) was performed 4 times, and then (2) was performed to measure the combing force.

[0295] Examples 1 to 21, Comparative Examples 1 to 14 (Preparation and Evaluation of Aqueous Compositions)

[0296] Using the components described in the table, an aqueous composition was prepared in the following procedure.

[0297] Prepare a 2% by mass aqueous solution of a cationic polymer (component (A) or component (A')), a 2% by mass aqueous solution of an anionic polymer (B1), a 1% by mass aqueous solution of an anionic polymer (B2), and a 5% by mass aqueous solution of a nonionic polymer (C1). Mix these aqueous solutions with the other components listed in the table and the remainder of water in such a manner that each component has the amount listed in the table. Specifically, add water, (B1) anionic polymer aqueous solution, (C1) nonionic polymer aqueous solution, (B2) anionic polymer aqueous solution, and acid (salt in Comparative Examples 12 to 14) in sequence, and stir these using a pen stirrer. While continuing to stir, slowly add the cationic polymer (component (A) or component (A')) aqueous solution to obtain an aqueous composition.

[0298] The obtained aqueous composition was used to perform evaluation according to the above method. The results are shown in Tables 1 to 6.

[0299] [Table 1]

[0300]

[0301] [Table 2]

[0302]

[0303] [Table 3]

[0304]

[0305] [Table 4]

[0306]

[0307] [Table 5]

[0308]

[0309] [Table 6]

[0310]

[0311] Examples 22 to 26, Comparative Examples 15 to 18 (Preparation and Evaluation of Aqueous Compositions)

[0312] Using the components described in the table, an aqueous composition was prepared in the following procedure.

[0313] Prepare a 2% by mass aqueous solution of a cationic polymer (component (A) or component (A')), a 2% by mass aqueous solution of an anionic polymer (B1), and a 1% by mass aqueous solution (gel) of agar (C2). Mix these aqueous solutions with the other components listed in the table and the remainder of water in such a manner that each component has the amount listed in the table. Specifically, add water, an aqueous solution of a cationic polymer (component (A) or component (A')), an aqueous solution of agar (C2), and an acid in sequence, heat in a water bath at 90°C, and stir with a stirring wing until the agar is completely dissolved. After the agar is dissolved, continue heating at 90°C while slowly adding the aqueous solution of anionic polymer (B1). After the addition is completed, stop heating, and cool to room temperature while stirring to obtain an aqueous composition.

[0314] The obtained aqueous composition was used to perform evaluation according to the above method. The results are shown in Tables 7 and 8.

[0315] Examples 27 to 30

[0316] Using the components described in the table, an aqueous composition was prepared in the following procedure.

[0317] A 2 mass % aqueous solution of a cationic polymer (component (A) or component (A')), a 2 mass % aqueous solution of an anionic polymer (B1), a 1 mass % aqueous solution of an anionic polymer (B2), a 1 mass % aqueous solution (gel) of agar (C2), and a 5 mass % aqueous solution of a nonionic polymer (C1) were prepared respectively. These aqueous solutions were mixed with other components and the remaining amount of water in such a manner that each component had the blending amount described in the table. Specifically, water, (B1) anionic polymer aqueous solution, (C1) nonionic polymer aqueous solution, (B2) anionic polymer aqueous solution, acid and (C2) agar aqueous solution were added in sequence, heated in a 90°C water bath while stirring with a stirring wing until (C2) agar was completely dissolved. After (C2) agar was dissolved, heating was continued at 90°C while slowly adding the cationic polymer (component (A) or component (A')) aqueous solution. After the addition was completed, heating was stopped, and the mixture was cooled to room temperature while stirring to obtain an aqueous composition.

[0318] The obtained aqueous composition was used to perform evaluation according to the above method. The results are shown in Table 7.

[0319] Comparative Examples 19 to 21

[0320] Using the components described in the table, an aqueous composition was prepared in the following procedure.

[0321] A 2 mass % aqueous solution of a cationic polymer (component (A')), a 2 mass % aqueous solution of an anionic polymer (B1), and a 1 mass % aqueous solution of an anionic polymer (B2) are prepared respectively. These aqueous solutions are mixed with other components described in the table and the remaining water in such a manner that each component becomes the blending amount described in the table. Specifically, water, (B1) anionic polymer aqueous solution, (B2) anionic polymer aqueous solution, and salt are added in sequence, and these are stirred using a pen-type stirrer. While continuing to stir, the cationic polymer (component (A')) aqueous solution is slowly added to obtain an aqueous composition.

[0322] The obtained aqueous composition was used to perform evaluation according to the above method. The results are shown in Table 8.

[0323] [Table 7]

[0324]

[0325] [Table 8]

[0326]

[0327] The components described in Tables 1 to 8 are as follows. The blending amounts (mass %) described in the tables are effective amounts of the components.

[0328] <Component (A): Cationic polymer>

[0329] *1 Polyquaternium-52 (N,N-dimethylaminoethyl methacrylate diethyl sulfate, N,N-dimethylacrylamide, polyethylene glycol dimethacrylate copolymer), "Sofcare KG-101W-E" manufactured by Kao Corporation, charge density 0.83 mmol / g (active ingredient amount 2.4 mass%)

[0330] *2 Polyquaternium-52 (N,N-dimethylaminoethyl methacrylate diethyl sulfate, N,N-dimethylacrylamide, polyethylene glycol dimethacrylate copolymer), "Sofcare KG-301W" manufactured by Kao Corporation, charge density 1.84 mmol / g (active ingredient amount 4.02 mass %)

[0331] *3 Polyquaternium-37 (methacryloylethyltrimethylammonium chloride polymer), "Cosmedia Ultragel 300" manufactured by BASF Japan Co., Ltd., content of the structural unit represented by the general formula (1): 100 mol%, charge density 4.81 mmol / g (active ingredient amount 96.9 mass%)

[0332] <Component (A'): Cationic polymer other than component (A)>

[0333] *4 Polyquaternium-37 (methacryloylethyltrimethylammonium chloride polymer), "KPPolymer E" manufactured by Kao Corporation, charge density 4.81 mmol / g (active ingredient amount 35 mass %)

[0334] *5 Polyquaternium-6 (dimethyldiallylammonium chloride polymer), "Merquat 100" manufactured by Lubrizol Advanced Materials, Inc., charge density 6.18 mmol / g (active ingredient amount 41.6 mass %)

[0335] *6 Polyquaternium-22 (dimethyldiallylammonium chloride·acrylic acid copolymer liquid), "Merquat 295" manufactured by Lubrizol Advanced Materials, Inc., charge density 6.04 mmol / g (active ingredient amount 37 mass %)

[0336] *7 Polyquaternium-11 (vinyl pyrrolidone·N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gafquat 440" manufactured by Ashland Japan Co., Ltd. (active ingredient content: 30% by mass)

[0337] *8 Polyquaternium-11 (vinyl pyrrolidone·N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gafquat 734" manufactured by Ashland Japan Co., Ltd. (active ingredient content: 50% by mass)

[0338] *9 Polyquaternium-11 (vinyl pyrrolidone·N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gafquat 755N" manufactured by Ashland Japan Co., Ltd. (active ingredient content: 20% by mass)

[0339] <Component (B1): Anionic polymer>

[0340] *10 Sodium alginate, Kimica Algin I-3-150 manufactured by Kimica Co., Ltd., Mw: 1.9 million to 2.3 million, charge density 4.65 mmol / g

[0341] *11 Sodium alginate, "Kimica Algin IL-2" manufactured by Kimica Co., Ltd., Mw: 500,000 to 900,000, charge density 4.65 mmol / g

[0342] *12 Carboxymethyl cellulose, “Cellogen F-5” manufactured by Daiichi Kogyo Seiyaku Co., Ltd., charge density 4.23 mmol / g

[0343] *13 Carboxyvinyl polymer, "Carbopol 980" manufactured by Lubrizol Advanced Materials, Inc., charge density 13.88 mmol / g

[0344] *14 (Acrylates / C10-30 alkyl acrylate) crosspolymer, "Pemulen TR-1" manufactured by Lubrizol Advanced Materials, Inc., charge density 13.67 mmol / g

[0345] <Component (B2): Anionic polymer>

[0346] *15 (Acrylic acid / stearyl acrylate) copolymer, "Sofcare SA-37W" manufactured by Kao Corporation, Mw: 20,000, charge density 8.88 mmol / g (active ingredient amount 10 mass %)

[0347] *16 Polyacrylic acid, "JURYMER AC-10L" manufactured by Toagosei Co., Ltd., Mw: 20,000 to 30,000, charge density 13.88 mmol / g (active ingredient amount 40 mass %)

[0348] <Component (C1): Nonionic polymer>

[0349] *17 Polyethylene glycol, "Blaunon PEG-20000S" manufactured by Aoki Oil & Fats Industries, Mw: 20,000

[0350] *18 Polyethylene glycol, “Wako Polyethylene glycol 6,000” manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., Mw: 6,000

[0351] *19 Polyvinylpyrrolidone, "Luviskol K90" manufactured by BASF Japan, Mw: 1.2 million

[0352] *20 Polyoxyethylene polyoxypropylene glycol (150 E.O.) (35 P.O.), "Pronon #208" manufactured by NOF Corporation

[0353] *21 Polyoxyethylene polyoxypropylene glycol (240 E.O.) (60 P.O.), "Unilube 75DE-2620R" manufactured by NOF Corporation

[0354] *22 Polyethylene glycol distearate, "Emulmin 862" manufactured by Sanyo Chemical Industries, Ltd.

[0355] <Acid>

[0356] *23 90% lactic acid, "PURAC ULTRAPURE90" manufactured by PURAC Thailand Ltd. (active ingredient content 90% by mass)

[0357] <Ingredient (C2): Agar>

[0358] *24 Reagent: WAKO agar, manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd. Gel strength: 400-600 g / cm 2

[0359] As shown in Tables 1 to 8, it can be seen that the hair treated with the aqueous composition of this example is less likely to become tangled, and the treatment effect is maintained even after shampooing. In addition, from the results of Examples 3, 6, and 7, it can be seen that when the step of heating the hair treated with the aqueous composition of this example to a temperature of 80° C. or higher is performed, the combing force after 4 shampooing becomes lower than when no heat treatment is performed, and the effect of suppressing hair tangling is improved.

[0360] [Industrial Applicability]

[0361] According to the present invention, there is provided an aqueous body composition which can enhance the texture-enhancing effect of a treated object and the duration of the effect, and in particular, can enhance the tangle-reducing effect of hair and the duration of the effect when used for hair treatment.

[0362] The aqueous composition can be used as various cosmetic compositions such as skin cosmetic compositions and hair cosmetic compositions. In addition, the aqueous composition can also be used as a premix of various cosmetic compositions. For example, additional ingredients can be added to the aqueous composition to prepare a skin cosmetic composition or a hair cosmetic composition.

Claims

1. An aqueous composition for body use, wherein: The aqueous composition for body use contains: (A) a cationic polymer having a viscosity of 1,000 mPa·s or more in a 1 mass % aqueous solution at 30° C., (B) an anionic polymer, (C) at least one selected from (C1) a nonionic polymer and (C2) agar, and water.

2. The aqueous body composition according to claim 1, wherein The component (A) is a polymer comprising a structural unit represented by the following general formula (1): In formula (1), R 1 is a hydrogen atom or a methyl group, R 2 ~R 4 Each independently represents an alkyl group having 1 to 4 carbon atoms; X represents -O- or -NH-, and m represents a number of 1 to 4.

3. The aqueous body composition according to claim 1 or 2, wherein The mass ratio of the component (A) to the component (B) contained in the aqueous composition for body use is (A) / (B) of 1.0 to 30.

4. The aqueous body composition according to any one of claims 1 to 3, wherein The mass ratio of the component (C1) to the total amount of the component (A) and the component (B) contained in the aqueous composition for body use is (C1) / {(A)+(B)} of 0.2 to 20.

5. The aqueous body composition according to any one of claims 1 to 3, wherein The mass ratio of the component (C2) to the total amount of the component (A) and the component (B) contained in the aqueous composition for body use is (C2) / {(A)+(B)} of 0.01 to 1.

0.

6. The aqueous body composition according to any one of claims 1 to 5, wherein The component (C1) is one or more selected from the group consisting of polyalkylene glycol or a derivative thereof, and a polymer containing a structural unit derived from vinylpyrrolidone.

7. The aqueous body composition according to any one of claims 1 to 6, wherein The component (B) includes: (B1) one or more selected from a cross-linked polymer including a structural unit derived from (meth)acrylic acid and anionic polysaccharides.

8. The aqueous body composition according to claim 7, wherein The component (B1) is alginic acid or a salt thereof.

9. The aqueous body composition according to claim 7 or 8, wherein The component (B) further includes: (B2) an anionic polymer other than the component (B1).

10. The aqueous body composition according to claim 9, wherein The component (B2) is a non-crosslinked polymer having a molecular weight of 1,000 to 30,000 and containing a structural unit derived from (meth)acrylic acid.

11. The aqueous body composition according to any one of claims 1 to 10, wherein The pH value of an aqueous solution prepared by diluting the aqueous body composition 20 times with water at 25° C. is 5.0 or less.

12. The aqueous body composition according to any one of claims 1 to 11, wherein The component (A) is at least one selected from the group consisting of methacryloylethyltrimethylammonium chloride polymer and N,N-dimethylaminoethylmethacrylate diethylsulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer.

13. A cosmetic composition, wherein: The aqueous composition for body according to any one of claims 1 to 12.

14. A method for treating hair, wherein: include: A step of applying the cosmetic composition according to claim 13 to hair, and then heating the hair to a temperature of 80° C. or higher.

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