JP2023175623A - Aqueous composition for body - Google Patents

Abstract

To provide an aqueous composition for body that has an effect of improving the texture of a treatment object and the duration of this effect and, particularly when used in hair treatment, can improve the effect of preventing hair tangling and its duration.SOLUTION: An aqueous composition for body comprises: (A) a cationic polymer with a viscosity of 1,000 mPa s or more in a 1 mass% aqueous solution at 30°C; (B) an anionic polymer; (C) a nonionic polymer; and water.SELECTED DRAWING: None

Description

The present invention relates to aqueous compositions for the body.

Aqueous compositions for treating keratinous materials containing cationic and anionic polymers are known. For example, Patent Document 1 discloses that a composition for treating keratin materials, which is characterized in that it contains at least one anionic polymer and at least one cationic polymer in a solvent medium, can be used in particular to treat hair, skin or nails. It is described that the anionic polymer can be fixed to the keratinous substance that can be included. Furthermore, it is assumed that the reason for the above effect is related to a complex formed by the interaction between the anionic polymer and the cationic polymer.

Regarding hair cosmetics containing cationic polymers and anionic polymers, Patent Document 2 states that one or more hair cosmetics selected from the group consisting of aromatic alcohols, cationic compounds, and water-soluble anionic polymer compounds. A semi-permanent hair dye composition that contains a polymer compound, a direct dye, and an acid, and has a pH and viscosity above a specified value, has sufficient dyeing properties and a high conditioning effect, and also maintains its viscosity at high temperatures and for a long period of time. It is stated that it is stable.
US Pat. No. 5,001,000 describes a method of preparing a polymeric skeleton containing (i) a) a hydrocarbon repeating unit containing at least one heteroatom, and optionally b) a physiologically acceptable medium comprising a fatty phase. A weight average of less than 100,000, containing from 6 to 120 carbon atoms and optionally functionalized pendant and/or terminal fatty chains attached to these hydrocarbon units. Compositions are disclosed that include a first polymer having a molecular mass, (ii) an anionic film-forming polymer, and (iii) a cationic film-forming polymer. The composition is said to provide a rapid make-up effect on keratinous materials and has application in make-up methods and care for keratinous materials, in particular as mascara.
Patent Document 4 describes a first polymer consisting of a hydrocolloid based on a nonionic or anionic polysaccharide, a second polymer consisting of an acrylic- or methacrylamidoalkylsulfonic acid or a salt thereof, and an amphiphilic polymer. It is described that a hair styling gel containing a third polymer combination having a volumizing effect on wet hair and a structuring effect on dry hair.
Further, Patent Document 5 describes a cationic polymer having a charge density within a predetermined range, a predetermined anionic structural unit containing 80% by mass or more and 100% by mass or less, and a weight average molecular weight of 4,000 or more and 80,000 or less. It is stated that a hair cosmetic containing an anionic polymer can improve the feel and appearance of damaged hair, and can maintain these effects even after repeated hair washing.

Japanese Unexamined Patent Publication No. 53-139734 Japanese Patent Application Publication No. 10-287535 Special Publication No. 2004-525101 Japanese Patent Application Publication No. 2006-70030 Japanese Patent Application Publication No. 2015-166333

As described in Patent Document 1, etc., an aqueous composition containing a complex formed from a cationic polymer and an anionic polymer (hereinafter also referred to as "polyion complex") is used as a composition for treating keratin materials such as hair. known to be used.
A polyion complex is an aggregate formed by ionic interaction between a cationic polymer and an anionic polymer. When a treatment composition containing a polyion complex is applied to an object to be treated, a cuticle-like highly elastic film is formed. can do. As a result, the texture of the object to be treated is improved, and for example, when the composition is used as a hair cosmetic composition such as a hair conditioner, a hair care effect is expressed, and the effect of suppressing hair tangles is improved. Be expected. However, Patent Documents 1 to 5 do not specifically mention improving the effect of suppressing hair entanglement. In addition, the hair treatment effect may be lost after one hair washing, so it has been desired to improve the sustainability of the treatment effect (washing resistance).

The present invention provides a body aqueous solution that can improve the effect of improving the texture of the object to be treated and the sustainability of the effect, and in particular can improve the effect of suppressing hair entanglement and the sustainability of the effect when used for hair treatment. Regarding the composition.

The present inventors have discovered that the above problem can be solved by an aqueous composition containing a cationic polymer, an anionic polymer, a nonionic polymer, and water having a 1% by mass aqueous solution viscosity of a predetermined value or more.
That is, the present invention relates to the following.
[1] Body use containing (A) a cationic polymer whose viscosity at 30°C of a 1% by mass aqueous solution is 1,000 mPa·s or more, (B) an anionic polymer, (C) a nonionic polymer, and water Aqueous composition.
[2] A cosmetic composition comprising the body aqueous composition according to [1] above.
[3] A hair treatment method comprising applying the cosmetic composition described in [2] above to hair, and then heating the hair to a temperature of 80° C. or higher.

According to the present invention, the effect of improving the texture of the object to be treated and the sustainability of the effect can be improved, and in particular, when used for hair treatment, the effect of suppressing hair entanglement and the sustainability of the effect can be improved. Aqueous compositions can be provided.
The aqueous composition can be used as various cosmetic compositions such as skin cosmetic compositions and hair cosmetic compositions. It is also possible to use the aqueous composition as a premix for various cosmetic compositions. For example, a skin cosmetic composition or a hair cosmetic composition can be prepared by adding additional ingredients to the aqueous composition.

[Definition]
As used herein, the term "aqueous composition for body use" refers to an aqueous composition used to treat the surface of the body, for example, the surface of keratin materials such as skin, hair, eyelashes, eyebrows, nails, etc. The term "aqueous composition" refers to a composition containing water as a main component, preferably a composition having a water content of 50% by mass or more.
The aqueous body composition of the present invention is preferably an aqueous composition for treating keratinous substances, more preferably an aqueous composition for treating skin or hair.
In this specification, "containing component X" also includes blending component X.

[Aqueous composition for body use]
The aqueous body composition of the present invention (hereinafter also simply referred to as "aqueous composition" or "composition of the present invention") is characterized in that (A) a 1% by mass aqueous solution has a viscosity of 1,000 mPa·s or more at 30°C; Contains a certain cationic polymer, (B) an anionic polymer, (C) a nonionic polymer, and water.
By having the above-mentioned structure, the composition of the present invention can improve the effect of improving the texture of the object to be treated and the sustainability of the effect, and in particular, when used for hair treatment, the effect of suppressing hair entanglement and its sustainability. can be improved.

Although the reason why the composition of the present invention achieves the above effects is not clear, it is thought to be as follows.
The composition of the present invention contains a polyion complex formed by ionic interaction between component (A) and component (B). In the polyion complex, a crosslinked structure is formed between component (A) and component (B) due to ionic interaction, and it is believed that this allows the film obtained using the composition of the present invention to exhibit a high elastic modulus. It will be done.
Furthermore, the composition of the present invention contains a nonionic polymer as component (C). In the film obtained using the composition of the present invention, the rigid crosslinked structure of the polyion complex formed by component (A) and component (B) is replaced by the long chain and flexible non-containing structure of component (C). It is thought that it is reinforced by compositing with a cross-linked structure. Since hydrogen bonding is possible between component (B) and component (C), component (C) is held within the crosslinked structure by component (B), forming a network with higher strength in the film. it seems to do. As a result, when the composition of the present invention is used, the effect of improving the texture of the object to be treated can be obtained even with a single treatment, and the treatment effect is not lost even after subsequent washing, and the effect is sustainable. It is thought that it can be obtained.
Further, it is considered that the viscosity of the 1% by mass aqueous solution of component (A) used in the present invention at 30° C. is 1,000 mPa·s or more, thereby improving the lubricity of the resulting film. It is thought that this further improves the texture of the object to be treated, and when the composition of the present invention is used for hair treatment, the effect of suppressing hair entanglement is improved.

(Component (A): cationic polymer)
Component (A) is a cationic polymer having a viscosity of 1,000 mPa·s or more at 30° C. in a 1% by mass aqueous solution, and is a polymer capable of forming a polyion complex by interaction with component (B).
The cationic polymer that is component (A) preferably has a cationic group and is positively charged as a total charge. Component (A) may have, in addition to the cationic group, an anionic group, a nonionic group, or an amphoteric group such as a betaine group, as long as the effects of the present invention are not impaired.
In this specification, a cationic group refers to a cationic group or a group that can be ionized to become a cationic group, and specifically includes a primary amino group, a secondary amino group, a tertiary amino group, and a cationic group. Examples include quaternary ammonium groups.
The anionic group is an anionic group or a group that can be ionized to become an anionic group, and specifically, one or more types selected from the group consisting of acidic groups such as carboxy groups, sulfonic acid groups, and phosphoric acid groups. Preferably, it is one or more selected from a carboxy group and a sulfonic acid group, and more preferably a carboxy group. At least a portion of the anionic group may be neutralized and in the form of a salt.

The viscosity at 30°C of a 1% by mass aqueous solution of component (A) is determined by the effect of improving the texture of the object to be treated and the sustainability of this effect, especially the effect of suppressing hair entanglement and improvement of its sustainability when used for hair treatment. From the viewpoint of s or more. The upper limit of the viscosity is not particularly limited, but from the viewpoint of ease of forming a polyion complex and ease of handling, it is preferably 100,000 mPa·s or less, more preferably 80,000 mPa·s or less, and even more preferably 50,000 mPa·s.・s or less, more preferably 30,000 mPa·s or less, even more preferably 25,000 mPa·s or less. The viscosity of the 1% by 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. 80,000 mPa・s or more, more preferably 1,500 mPa・s or more and 50,000 mPa・s or less, even more preferably 1,700 mPa・s or more and 30,000 mPa・s or less, even more preferably 1,800 mPa・s It is above 25,000 mPa·s.
The viscosity at 30°C of a 1% by mass aqueous solution of component (A) means the viscosity at 30°C of an aqueous solution containing 1% by mass of the active ingredient of the cationic polymer, and specifically by the method described in the Examples. Can be measured.

The cationic charge density of component (A) is important from the viewpoint of facilitating the formation of a polyion complex through interaction with component (B), improving the texture of the object to be treated, and improving the sustainability of the effect, especially when used for hair treatment. From the viewpoint of the effect of suppressing hair entanglement and improving its sustainability, the amount is preferably 0.1 mmol/g or more, more preferably 0.2 mmol/g or more, still more preferably 0.3 mmol/g or more, even more preferably 0. It is .5 mmol/g or more. In addition, from the viewpoint of improving the texture of the object to be treated and improving the sustainability of this effect, especially the effect of suppressing hair entanglement when used for hair treatment and improving the sustainability thereof, it is preferably 20 mmol/g or less, more preferably It is 15 mmol/g or less, more preferably 12 mmol/g or less, even more preferably 10 mmol/g, even more preferably 7.0 mmol/g, even more preferably 5.0 mmol/g or less. The cationic charge density of component (A) is preferably 0.1 mmol/g or more and 20 mmol/g or less, more preferably 0.2 mmol/g or more and 15 mmol/g or less, and 0.2 mmol/g or more and 12 mmol/g or less, Even more preferably from 0.3 mmol/g to 10 mmol/g, even more preferably from 0.3 mmol/g to 7.0 mmol/g, even more preferably from 0.5 mmol/g to 5.0 mmol/g. .

The cationic charge density of component (A) is the number of moles of cationic groups contained per gram of polymer. In addition, when at least a part of the cationic group of component (A) is in the form of a neutralized salt, the number of moles of the cationic group mentioned above includes the number of moles of the cationic group in the salt state. shall be.
In addition, two or more types of polymers may be used as component (A), and in this case, the cation charge density of component (A) is determined by calculating a weighted average from the cation charge density and blending amount of each polymer. It will be done.

As component (A), any of natural polymers such as cationized polysaccharides or cationized products thereof, as well as synthetic polymers can be used, but from the viewpoint of easy availability, synthetic polymers are preferred.
Specific examples of the polymer used as component (A) include cationized polyvinyl alcohol, polyethyleneimine, methacryloylethyltrimethylammonium salt polymer, and polymers having a viscosity of 1,000 mPa·s or more at 30°C in a 1% by mass aqueous solution. Quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, vinylimidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16) , vinylpyrrolidone/alkylamino(meth)acrylate copolymer, vinylpyrrolidone/alkylamino(meth)acrylate/vinylcaprolactam copolymer, alkylacrylamide/(meth)acrylate/alkylaminoalkylacrylamide/polyethylene glycol (meth)acrylate copolymer Examples include polymers, adipic acid/dimethylaminohydroxypropylethylenetriamine copolymers, and one or more of these can be used. In this specification, "(meth)acrylic acid" means acrylic acid or methacrylic acid, and "(meth)acrylate" means acrylate or methacrylate.

Among the above, examples of the methacryloylethyltrimethylammonium salt polymer include methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37), methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride/methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-49) ), methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride/2-hydroxyethyl methacrylate copolymer (polyquaternium-48), and the like.
Examples of the quaternized dialkylaminoalkyl (meth)acrylate polymer include vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate diethyl sulfate copolymer (polyquaternium-11), N,N-dimethylaminoethyl methacrylate Examples include acid diethyl sulfate/N,N-dimethylacrylamide/polyethylene glycol dimethacrylate copolymer (polyquaternium-52).
Examples of diallyl quaternized ammonium salt polymers include dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium chloride/acrylic acid copolymer (polyquaternium-22), and dimethyldiallylammonium chloride/acrylamide copolymer (polyquaternium-22). Examples include polyquaternium-7), acrylamide/acrylic acid/dimethyldiallylammonium chloride copolymer (polyquaternium-39), and the like.

Examples of methacrylamide propyltrimethylammonium salt polymers include methacrylamide propyltrimethylammonium chloride polymer, vinylpyrrolidone/methacrylamidopropyltrimethylammonium chloride copolymer, and acrylic acid/methyl acrylate/methacrylamidopropyltrimethylammonium chloride copolymer. (Polyquaternium-47), acrylic acid/acrylamide/methacrylamidopropyltrimethylammonium chloride copolymer (Polyquaternium-53), and the like.

Component (A) is effective from the viewpoint of improving film-forming ability, improving the texture of the object to be treated, the effect of improving the texture, and the sustainability of the effect, especially the effect of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment. From this viewpoint, a polymer containing a structural unit represented by the following general formula (1) is preferable.

In formula (1), R ¹ is a hydrogen atom or a methyl group, and R ² to R ⁴ are each independently an alkyl group having 1 to 4 carbon atoms. X is -O- or -NH-, and m is a number from 1 to 4.

R ¹ in general formula (1) is preferably a methyl group, and R ² to R ⁴ are each independently preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group, and Preferably it is a methyl group.
X in general formula (1) is preferably -O-, and m is preferably 1 or more and 3 or less, more preferably 2 or more and 3 or less.

The structural units represented by the general formula (1) include a structural unit derived from methacryloylethyl trimethylammonium salt, a structural unit derived from N,N-dimethylaminoethyl methacrylate diethyl sulfate, and methacrylamide propyltrimethylammonium One or more types selected from the group consisting of structural units derived from salts, preferably structural units derived from methacryloylethyl trimethylammonium salt, and structures derived from N,N-dimethylaminoethyl methacrylate diethyl sulfate. One or more types selected from the group consisting of units.

Component (A) may be a polymer containing other structural units other than the structural unit represented by the general formula (1). Examples of the other structural units include vinyl monomers such as vinylpyrrolidone, amphoteric monomers such as (meth)acryloylethyl dimethyl betaine, hydroxyalkyl (meth)acrylates such as (meth)acrylic acid alkyl esters, and 2-hydroxyethyl (meth)acrylate. ) acrylates, acrylamides such as N,N-dimethylacrylamide, etc., and structural units derived from them. Component (A) may also be a cross-linked polymer crosslinked with polyethylene glycol di(meth)acrylate or the like.

The content of the structural unit represented by the general formula (1) in component (A) is determined from the viewpoint of improving film forming ability, improving the texture of the object to be treated, the effect of improving the texture, and the sustainability of the effect, in particular: From the viewpoint of the hair entanglement suppressing effect and the improvement of its sustainability when used in hair treatment, it is preferably 8.0 mol % or more and 100 mol % or less of all the structural units constituting component (A).

Moreover, it is preferable that component (A) is a polymer having a crosslinked structure. The term "crosslinked structure" as used herein means a three-dimensional network structure in which polymer chains, which are the main structure, are connected within or between polymer chains. The method for forming the crosslinked structure is not particularly limited, and examples thereof include methods of crosslinking simultaneously with polymerization such as polycondensation and radical polymerization, and methods of crosslinking polymer chains later.

Component (A) can be used alone or in combination of two or more. Among the above, the viewpoint of making it easier to increase the viscosity of a 1% by mass aqueous solution at 30°C to a predetermined value or more, improving the texture of the object to be treated and improving the sustainability of the effect, and especially suppressing hair entanglement when used for hair treatment. From the viewpoint of improving the effect and its sustainability, component (A) is preferably one selected from the group consisting of methacryloylethyltrimethylammonium salt polymer and quaternized dialkylaminoalkyl (meth)acrylate polymer. The above, more preferably methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37), methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride/methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-49), methacryloylethyldimethylbetaine/ Methacryloylethyl trimethylammonium chloride/2-hydroxyethyl methacrylate copolymer (polyquaternium-48), and N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/polyethylene glycol dimethacrylate copolymer (Polyquaternium-52), more preferably methacryloylethyltrimethylammonium chloride polymer (Polyquaternium-37) and N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide - One or more types selected from the group consisting of polyethylene glycol dimethacrylate copolymer (polyquaternium-52).

Commercially available polymers can also be used as component (A). Specific examples include "Cosmedia Ultragel 300" (polyquaternium-37, cationic charge density: 4.81 mmol/g) manufactured by BASF Japan, and "Sofcare KG-101W-E" (polyquaternium) manufactured by Kao Corporation. -52, cation charge density: 0.83 mmol/g), "Sofcare KG-301W" (Polyquaternium-52, cation charge density: 1.84 mmol/g), etc. Note that all of these are cationic polymers having a crosslinked structure.

(Component (B): anionic polymer)
Component (B) is a polymer capable of forming a polyion complex by interaction with component (A). As used herein, the term "anionic polymer" refers to a polymer that has anionic groups and is substantially free of cationic groups and amphoteric groups. "Substantially free of cationic groups and amphoteric groups" means that the molar amount of cationic groups and amphoteric groups relative to anionic groups is preferably 0.1% or less.

The anionic group contained in component (B) is preferably an acidic group such as a carboxy group, a sulfonic acid group, or a phosphoric acid group, from the viewpoint of facilitating the formation of a polyion complex by interaction with component (A), and availability. From this viewpoint, a carboxy group is more preferred. Note that in component (B), at least a portion of the anionic group may be neutralized to be in a salt state.

<Component (B1): Crosslinked polymer containing structural unit derived from (meth)acrylic acid, anionic polysaccharide>
Component (B) is (B1) (Meta) from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, especially from the viewpoint of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment. It is preferable to include one or more selected from the group consisting of a crosslinked polymer containing a structural unit derived from acrylic acid and an anionic polysaccharide.

Among component (B1), examples of crosslinked polymers containing structural units derived from (meth)acrylic acid include homopolymers or copolymers of (meth)acrylic acid having a crosslinked structure, or salts thereof. It will be done. The term "crosslinked structure" as used herein refers to a three-dimensional network structure in which polymer chains, which are the main structure of a polymer, are connected within or between polymer chains. The method for forming the crosslinked structure is not particularly limited, and examples thereof include methods of crosslinking simultaneously with polymerization such as polycondensation and radical polymerization, and methods of crosslinking polymer chains later.
Examples of the homopolymer of (meth)acrylic acid include polyacrylic acid, polymethacrylic acid, and salts thereof.
Examples of the (meth)acrylic acid copolymer include (meth)acrylic acid/maleic acid copolymer, (meth)acrylic acid/itaconic acid copolymer, (meth)acrylic acid/fumaric acid copolymer, ( Meth)acrylic acid/vinyl acetate copolymer, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, (meth)acrylic acid/2-hydroxyethyl methacrylate copolymer, acrylic acid/acrylic acid alkyl ester /(N-alkyl)acrylamide copolymer, and salts thereof, and one or more of these may be used.
Among the above, as the copolymer of (meth)acrylic acid, (meth)acrylic acid/(meth)acrylic acid alkyl ester is preferable, and acrylic acid/acrylic acid alkyl ester is more preferable. In the (meth)acrylic acid alkyl ester, the alkyl carbon number is preferably 1 or more, more preferably 4 or more, even more preferably 8 or more, and preferably 40 or less, more preferably 36 or less, and even more preferably 32 or less. Examples include (meth)acrylic acid alkyl esters.

Specific examples of crosslinked polymers containing structural units derived from (meth)acrylic acid include carboxyvinyl polymer or its salt, (acrylates/alkyl acrylate (C10-30)) crosspolymer, (sodium acrylate/acryloyl dimethyl Examples include taurine/dimethylacrylamide) crosspolymer and acrylates crosspolymer-4.

Among component (B1), anionic polysaccharides include polysaccharides having a carboxyl group (hyaluronic acid, alginic acid, pectic acid, carboxymethyl cellulose, xanthan gum, etc.), and sulfates of polysaccharides (carrageenan, keratan sulfate, dermatan sulfate, Examples include sulfated starch, heparin, heparan sulfate), and salts thereof, and one or more of these can be used.
Among the above, the anionic polysaccharide is preferable from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, especially the effect of suppressing hair tangling when used in hair treatment, and improving the sustainability of the effect. is a polysaccharide having a carboxyl group or a salt thereof, more preferably alginic acid, carboxymethyl cellulose, or a salt thereof, still more preferably alginic acid or a salt thereof.

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

Among the above, component (B1) is preferably used from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, especially the effect of suppressing hair entanglement when used in hair treatment, and improving the sustainability of the effect. One or more selected from the group consisting of carboxyvinyl polymer, (acrylates/alkyl acrylate (C10-30)) crosspolymer, and anionic polysaccharide, more preferably anionic polysaccharide or a salt thereof, still more preferably Alginic acid or its salt.

The anion charge density of component (B1) is not particularly limited, but from the viewpoint of facilitating the formation of a polyion complex through interaction with component (A), improving the texture of the object to be treated and improving the sustainability of the effect, especially hair. From the viewpoint of suppressing hair entanglement and improving its sustainability when used for treatment, it is preferably 1.0 mmol/g or more, more preferably 2.0 mmol/g or more, and still more preferably 3.5 mmol/g or more. , preferably 25 mmol/g or less, more preferably 20 mmol/g, from the viewpoint of improving the texture of the object to be treated and improving its sustainability, especially the effect of suppressing hair entanglement when used for hair treatment, and improving its sustainability. The amount is more preferably 15 mmol/g or less. The anion charge density of 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 still more preferably 3.5 mmol/g or more and 15 mmol/g. g or less.
The anionic charge density of component (B1) is the number of moles of anionic groups contained per gram of polymer. In addition, when at least a part of the anionic group of component (B1) is a neutralized salt, the number of moles of the anionic group mentioned above includes the number of moles of the anionic group in the salt state. shall be.
Two or more types of polymers may be used as component (B1), and in this case, the anion charge density of component (B1) is determined by calculating a weighted average from the anion charge density and blending amount of each polymer.

When component (B1) is an anionic polysaccharide, its weight average molecular weight (Mw) is preferably 2,000 or more, more preferably 10,000 or more, still more preferably 30, 000, more preferably 50,000 or more. In addition, from the viewpoint of facilitating the formation of a polyion complex through interaction with component (A), the effect of improving the texture of the object to be treated and its sustainability, especially the effect of suppressing hair entanglement and its sustainability when used for hair treatment. From the viewpoint of improving properties, it is preferably 3,500,000 or less, more preferably 3,000,000 or less. The weight average molecular weight (Mw) of the anionic polysaccharide that is component (B1) is preferably 2,000 or more and 3,500,000 or less, more preferably 10,000 or more and 3,000,000 or less, and even more preferably more than 30,000 and 3,000,000 or less. 1,000,000 or less, and even more preferably 50,000 or more and 3,000,000 or less.
The weight average molecular weight of component (B1) can be measured by gel permeation chromatography (GPC).

The content of component (B1) in component (B) is determined from the viewpoints of improving film-forming ability, facilitating the formation of a polyion complex through interaction with component (A), improving the texture of the object to be treated, and this effect. From the viewpoint of improving the sustainability of hair, especially the effect of suppressing hair entanglement when used for hair treatment, and improving its sustainability, preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more. , and even more preferably 80% by mass or more and 100% by mass or less.

<Component (B2): Anionic polymer other than component (B1)>
Component (B) is used from the viewpoint of further improving the effect of improving the texture of the object to be treated and the sustainability of the effect, particularly from the viewpoint of suppressing the entanglement of hair when used in hair treatment and improving the sustainability thereof. (B2) Preferably, it contains an anionic polymer other than the component (B1). Component (B2) forms a hydrogen bond with the nonionic polymer (C) complexed with the crosslinked structure in the polyion complex, thereby forming a hydrogen bond within the crosslinked structure of the polyion complex formed by component (A) and component (B). It is considered that component (C) can be immobilized on. Due to this effect, even if the object is rinsed or washed after being treated with the composition of the present invention, component (C) is not washed away and tends to remain in the film, which is thought to improve the sustainability of the treatment effect.

The molecular weight of component (B2) contributes to the immobilization of component (C), from the viewpoint of further improving the effect of improving the texture of the treated object and the sustainability of the effect, especially when used for hair treatment. From the viewpoint of the entanglement suppressing effect and improving its sustainability, it is preferably 1,000 or more, more preferably 2,000 or more, even more preferably 5,000 or more, even more preferably 10,000 or more, and also preferably It is 50,000 or less, more preferably 40,000 or less, even more preferably 30,000 or less. 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, still more preferably 2,000 or more and 30,000 or less, even more preferably 5 ,000 or more and 30,000 or less, and even more preferably 10,000 or more and 30,000 or less.
"Molecular weight" here means weight average molecular weight, and can be measured by gel permeation chromatography (GPC).

Component (B2) is a polymer having a carboxy group, preferably having a molecular weight of 1,000 or more and 50,000 or less, more preferably 1,000 or more and 30,000 or less, and more preferably a molecular weight of 1,000 or more and 30,000 or less, It is a non-crosslinked polymer containing 000 or less structural units derived from (meth)acrylic acid.
Examples of non-crosslinked polymers containing structural units derived from (meth)acrylic acid that are preferably used as component (B2) include poly(meth)acrylic acid, (meth)acrylic acid/maleic acid copolymers, (meth)acrylic acid/itaconic acid copolymer, (meth)acrylic acid/fumaric acid copolymer, (meth)acrylic acid/vinyl acetate copolymer, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer Polymers, (meth)acrylic acid/2-hydroxyethyl methacrylate copolymers, acrylic acid/acrylic acid alkyl esters/(N-alkyl)acrylamide copolymers, and salts thereof, and one of these or Two or more types can be used.
Polymers having carboxyl groups other than those mentioned above that are preferably used as component (B2) include polymaleic acid, maleic acid/diisobutylene copolymer, maleic acid/styrene copolymer, benzoic acid/formaldehyde condensate, and benzoic acid/diisobutylene copolymer. Examples include phenol/formaldehyde condensates and salts thereof.

Among the above, from the viewpoint of further improving the effect of improving the texture of the object to be treated and the sustainability of this effect, especially from the viewpoint of suppressing the entanglement of hair when used in hair treatment and improving its sustainability, component (B2) Preferably, it is one or more selected from the group consisting of poly(meth)acrylic acid, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, and salts thereof.

Examples of poly(meth)acrylic acid or a salt thereof include polyacrylic acid, polymethacrylic acid, and salts thereof, and polyacrylic acid or a salt thereof is preferable.
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 preferable. In the (meth)acrylic acid alkyl ester, the alkyl carbon number is preferably 1 or more, more preferably 4 or more, still more preferably 8 or more, even more preferably 12 or more, and preferably 40 or less, more preferably 36 Below, (meth)acrylic acid alkyl esters are more preferably 32 or less, even more preferably 24 or less.
(Meth)acrylic acid/(meth)acrylic acid alkyl ester is preferably acrylic acid/acrylic acid alkyl ester, (acrylic acid/octyl acrylate) copolymer, and (acrylic acid/stearyl acrylate) copolymer. One or more types selected from the group consisting of are more preferable, and (acrylic acid/stearyl acrylate) copolymer is even more preferable.

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

The anion charge density of component (B2) is not particularly limited, but from the viewpoint of further improving the effect of improving the texture of the object to be treated and the sustainability of this effect, especially the effect of suppressing hair entanglement and its sustainability when used in hair treatment. From the viewpoint of improving properties, it is preferably 1.0 mmol/g or more, more preferably 3.0 mmol/g or more, even more preferably 5.0 mmol/g or more, and preferably 25 mmol/g or less, more preferably 20 mmol /g or less, more preferably 15 mmol/g or less. The anion charge density of 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 still more preferably 5.0 mmol/g or more and 15 mmol/g. g or less.
Two or more types of polymers may be used as component (B2), and in this case, the anion charge density of component (B2) is determined by calculating a weighted average from the anion charge density and blending amount of each polymer.

When component (B) contains component (B2), the content of component (B2) in component (B) is determined from the viewpoint of further improving the effect of improving the texture of the treated object and the sustainability of the effect, especially for hair. From the viewpoint of the effect of suppressing hair tangling and improving its sustainability when used for treatment, preferably 1% by mass or more, more preferably 2% by mass or more, still more preferably 3% by mass or more, even more preferably 5% by mass. The content is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, even more preferably 20% by mass or less. 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, even more preferably 3% by mass or more and 30% by mass. The content is more preferably 5% by mass or more and 20% by mass or less.

In addition, when component (B) includes 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 from the viewpoint of the effect of improving the texture of the object to be treated and the sustainability of the effect, especially the effect of suppressing hair tangles when used for hair treatment and the improvement of the sustainability of the effect. The above ratio is more preferably 0.02 or more, still more preferably 0.05 or more, even more preferably 0.08 or more, and from the viewpoint of ease of forming a polyion complex with component (A), preferably 1. It is 0 or less, more preferably 0.80 or less, still more preferably 0.50 or less, even more preferably 0.30 or less. The mass ratio [(B2)/{(B1)+(B2)}] is preferably 0.01 or more and 1.0 or less, more preferably 0.02 or more and 0.80 or less, and even more preferably 0.05. 0.50 or less, more preferably 0.08 or more and 0.30 or less.

(Component (C): nonionic polymer)
The composition of the present invention contains a nonionic polymer as component (C). As used herein, the term "nonionic polymer" refers to a polymer substantially free of ionic groups such as cationic groups, anionic groups, and amphoteric groups.

Component (C) includes polyalkylene glycol or its derivatives, polymers containing constitutional units derived from vinylpyrrolidone, polymers containing constitutional units derived from (meth)acrylic esters, polyvinyl alcohol, polyacrylamide, polycaprolactam, etc. Among them, one or more types can be used.

Examples of the polyalkylene glycol include homopolymers or copolymers of alkylene glycols in which the number of alkylene carbon atoms is 2 or more and 6 or less, preferably 2 or more and 4 or less, more preferably 2 or more and 3 or less. Specific examples include polyethylene glycol, polypropylene glycol, polytrimethylene ether glycol, polytetramethylene ether glycol, polyethylene glycol-polypropylene glycol copolymer (polyoxyethylene polyoxypropylene glycol), polyethylene glycol-polytrimethylene ether glycol Examples include copolymers, polyethylene glycol-polytetramethylene ether glycol copolymers, polypropylene glycol-polytetramethylene ether glycol copolymers, and the like. Among these, from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, especially the effect of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment, and from the viewpoint of availability, it is preferable. One or more types selected from the group consisting of polyethylene glycol, polypropylene glycol, and polyethylene glycol-polypropylene glycol copolymers, more preferably one selected from the group consisting of polyethylene glycol and polyethylene glycol-polypropylene glycol copolymers. More than a species.

Examples of polyalkylene glycol derivatives include terminal-modified products of the polyalkylene glycols mentioned above, such as polyalkylene glycol monoalkyl ether, polyalkylene glycol dialkyl ether, polyalkylene glycol monoaryl ether, polyalkylene glycol diaryl ether, and polyalkylene glycol monofatty acid ester. , polyalkylene glycol difatty acid ester, polyalkylene glycol diglycidyl ether, and the like. Among these, from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, especially the effect of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment, and from the viewpoint of availability, it is preferable. One or more types selected from the group consisting of polyalkylene glycol monoalkyl ether, polyalkylene glycol dialkyl ether, polyalkylene glycol monofatty acid ester, and polyalkylene glycol difatty acid ester, more preferably polyalkylene glycol monofatty acid ester and polyalkylene glycol difatty acid ester. One or more types selected from the group consisting of alkylene glycol difatty acid esters.
The number of carbon atoms in the alkyl group in the mono- or dialkyl ether of polyalkylene glycol and the number of carbon atoms in the fatty acid in the mono- or di-fatty acid ester of polyalkylene glycol are preferably 1 or more and 36 or less, more preferably 4 or more and 32 or less, and even more preferably is 8 or more and 24 or less, more preferably 12 or more and 22 or less. The number of carbon atoms in the aryl group in the mono- or diaryl ether of the polyalkylene glycol is preferably 6 or more and 36 or less, more preferably 6 or more and 32 or less, even more preferably 6 or more and 24 or less, even more preferably 6 or more and 22 or less. be.

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, and polyethylene glycol monodecyl ether. Tridecyl ether, polyethylene glycol-bisphenol A ether, polyethylene glycol dilaurate, polyethylene glycol 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-monoctyl 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, polyethylene glycol distearate-polypropylene glycol, polyethylene glycol-polypropylene glycol-diglycidyl ether, etc. One or more of these can be used.

Examples of the polymer containing a constitutional unit derived from vinylpyrrolidone include a vinylpyrrolidone homopolymer or a copolymer of vinylpyrrolidone and a nonionic monomer. Specific examples include polyvinylpyrrolidone, vinylpyrrolidone/vinyl acetate copolymer, vinylpyrrolidone/methacrylamide/vinylimidazole copolymer, and the like.

Polymers containing structural units derived from (meth)acrylic esters include homopolymers of (meth)acrylic esters, (meth)acrylic esters, (meth)acrylamide, dimethylacrylamide, vinyl acetate, vinyl Examples include copolymers with nonionic monomers such as methyl ether. Examples of the (meth)acrylic ester include, in addition to the above-mentioned (meth)acrylic acid alkyl ester, (meth)acrylic acid hydroxyalkyl ester, (meth)acrylic acid alkyl ether, and the like.
Specific examples of polymers containing structural units derived from (meth)acrylic acid esters include (dimethylacrylamide/hydroxyethyl acrylate/methoxyethyl acrylate) copolymer, (hydroxyethyl acrylate/methoxyethyl acrylate) copolymer, Examples include polymers.

Among the above, ingredients ( C) is preferably one or more selected from the group consisting of polyalkylene glycol or a derivative thereof, and a polymer containing a constitutional unit derived from vinylpyrrolidone, and more preferably polyethylene glycol, polypropylene glycol, and polyethylene glycol. One or more selected from the group consisting of polypropylene glycol copolymers, mono- or di-fatty acid esters thereof, and polyvinylpyrrolidone, more preferably polyethylene glycol, polyethylene glycol-polypropylene glycol copolymers, mono- or di-fatty acid esters thereof, and polyvinylpyrrolidone. One or more types selected from the group consisting of fatty acid esters and polyvinylpyrrolidone.

The weight average molecular weight (Mw) of component (C) is determined from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, particularly from the viewpoint of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment. In addition, from the viewpoint of availability, it is preferably 2,000 or more, more preferably 5,000 or more, even more preferably 10,000 or more, and preferably 2,000,000 or less, more preferably 1,500, 000 or less. The weight average molecular weight of 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, even more preferably 10,000 or more and 1,500, 000 or less.
The weight average molecular weight of component (C) can be measured by gel permeation chromatography (GPC).

(water)
Since the composition of the present invention is an aqueous composition, it contains water. As water, deionized water or distilled water is preferred. Note that tap water, ground water, etc. sterilized with hypochlorous acid or the like may be used as long as the stability of the composition is not impaired.

(Content)
The content or blending amount of each component in the aqueous composition is determined from the viewpoint of improving the texture of the object to be treated and the sustainability of the effect, especially the effect of suppressing hair entanglement and its sustainability when used for hair treatment. From the viewpoint of improvement, the following is preferable.

The content of component (A) in the aqueous composition is determined from the viewpoint of ease of forming a polyion complex, the effect of improving the texture of the object to be treated, and the sustainability of the effect, especially when used for hair treatment. From the viewpoint of the entanglement suppressing effect and improving its sustainability, preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, even more preferably 0.1% by mass. The content is more preferably 0.2% by mass or more. In addition, from the viewpoint of stability of the aqueous composition, preferably 3.0% by mass or less, more preferably 2.5% by mass or less, even more preferably 2.0% by mass or less, even more preferably 1.5% by mass. The content is more preferably 1.0% by mass or less. The content of component (A) in the aqueous composition is preferably 0.01% by mass or more and 3.0% by mass or less, more preferably 0.02% by mass or more and 2.5% by mass or less, and even more preferably 0.05% by mass or more and 2.0% by mass or less, even more preferably 0.1% by mass or more and 1.5% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably is 0.2% by mass or more and 1.0% by mass or less.

The content of component (B) in the aqueous composition is determined from the viewpoint of ease of forming a polyion complex, the effect of improving the texture of the object to be treated, and the sustainability of the effect, especially when used for hair treatment. From the viewpoint of the entanglement suppressing effect and improving its sustainability, preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, even more preferably 0.04% by mass. That's all. In addition, from the viewpoint of stability of the aqueous composition, preferably 3.0% by mass or less, more preferably 2.0% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.0% by mass. The content is further preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, even more preferably 0.2% by mass or less, even more preferably 0.1% by mass or less. The content of component (B) in the aqueous composition is preferably 0.005% by mass or more and 3.0% by mass or less, more preferably 0.01% by mass or more and 2.0% by mass or less, and even more preferably 0.02 mass% or more and 1.5 mass% or less, even more preferably 0.02 mass% or more and 1.0 mass% or less, even more preferably 0.02 mass% or more and 0.5 mass% or less, even more preferably is 0.02 mass% or more and 0.3 mass% or less, even more preferably 0.02 mass% or more and 0.3 mass% or less, even more preferably 0.02 mass% or more and 0.2 mass% or less, even more Preferably it is 0.02 mass% or more and 0.1 mass% or less, and even more preferably 0.04 mass% or more and 0.1 mass% or less.

The total content of component (A) and component (B) in the aqueous composition is determined by the effect of improving the texture of the object to be treated and the sustainability of the effect, especially the effect of suppressing hair tangles when used for hair treatment. From the viewpoint of improving its sustainability, preferably 0.02% by mass or more, more preferably 0.04% by mass or more, still more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and even more Preferably it is 0.2% by mass or more, and even more preferably 0.3% by mass or more. In addition, from the viewpoint of stability of the aqueous composition, preferably 5.0% by mass or less, more preferably 4.0% by mass or less, even more preferably 3.0% by mass or less, even more preferably 2.0% by mass. It is as follows. The total content of component (A) and component (B) in the aqueous composition is preferably 0.02% by mass or more and 5.0% by mass or less, more preferably 0.04% by mass or more and 4.0% by mass. % or less, more preferably 0.05% by mass or more and 3.0% by mass or less, even more preferably 0.1% by mass or more and 2.0% by mass or less, even more preferably 0.2% by mass or more and 2.0% by mass. % or less, more preferably 0.3% by mass or more and 2.0% by mass or less.

The ratio of the content of component (A) and component (B) in the aqueous composition is determined from the viewpoint of ease of forming a polyion complex, the effect of improving the texture of the object to be treated, and the sustainability of the effect, especially for hair treatment. From the viewpoint of the hair entanglement suppressing effect and the improvement of its sustainability when used for hair tangling, the mass ratio of component (A) to component (B) [(A)/(B)] is preferably 1.0 or more, more preferably Preferably 2.0 or more, more preferably 3.0 or more, even more preferably 4.0 or more, even more preferably 5.0 or more, and preferably 30 or less, more preferably 20 or less, even more preferably is 15 or less, more preferably 12 or less, even more preferably 10 or less. 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, still more preferably 3.0 or more and 15 or less, even more preferably 4. The amount is 0 or more and 12 or less, more preferably 5.0 or more and 10 or less.
In addition, in the aqueous composition of the present invention, the effect of the present invention is determined by the mass ratio of component (A) and component (B) more than the cation charge/anion charge ratio of component (A) and component (B). works in an advantageous manner.

The ratio of the number of moles of cationic charge of component (A) to the number of moles of anionic charge of component (B) in the aqueous composition determines the effect of improving the texture of the object to be treated and the sustainability of this effect, especially for hair treatment. From the viewpoint of hair entanglement suppressing effect and improvement of its sustainability when used for hair, preferably 10/90 to 95/5, more preferably 20/80 to 95/5, even more preferably 25/75 to 90/10. This is the amount.

The content of component (C) in the aqueous composition is determined from the viewpoint of the effect of improving the texture of the object to be treated and the sustainability of this effect, especially the effect of suppressing hair entanglement when used for hair treatment and the improvement of its sustainability. , preferably 0.02% by mass or more, more preferably 0.04% by mass or more, even more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass. % or more, more preferably 0.3% by mass or more. In addition, from the viewpoint of stability of the aqueous composition, preferably 5.0% by mass or less, more preferably 4.0% by mass or less, even more preferably 3.0% by mass or less, even more preferably 2.0% by mass. It is as follows. The content of component (C) in the aqueous composition is preferably 0.02% by mass or more and 5.0% by mass or less, more preferably 0.04% by mass or more and 4.0% by mass or less, and even more preferably 0.05% by mass or more and 3.0% by mass or less, even more preferably 0.1% by mass or more and 2.0% by mass or less, even more preferably 0.2% by mass or more and 2.0% by mass or less, even more preferably is 0.3% by mass or more and 2.0% by mass or less.

The mass ratio of component (C) to the total amount of component (A) and component (B) in the aqueous composition [(C)/{(A)+(B)}] is the mass ratio of component (C) to the total amount of component (A) and component (B) in the aqueous composition. From the viewpoint of improving the sustainability of the effect, especially the effect of suppressing hair entanglement when used for hair treatment and improving its sustainability, it is preferably 0.2 or more, more preferably 0.3 or more, and even more preferably 0. 4 or more, even more preferably 0.5 or more, even more preferably 0.6 or more, even more preferably 0.8 or more, and 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, even more preferably 1.5 or less. The mass ratio [(C)/{(A)+(B)}] is preferably 0.2 or more and 20 or less, more preferably 0.3 or more and 15 or less, and even more preferably 0.4 or more and 10 or less. Even more preferably 0.5 or more and 8.0 or less, even more preferably 0.6 or more and 5.0 or less, even more preferably 0.8 or more and 2.0 or less, even more preferably 0.8 or more and 1.5 It is as follows.

The content of water in the aqueous composition is preferably 50% by mass or more, more preferably 70% by mass or more, and still more preferably 80% by mass or more, from the viewpoint of forming an aqueous composition and the stability of the composition. , and even more preferably 90% by mass or more. The water content in the aqueous composition may be the balance of components (A) to (C).

In addition, the composition of the present invention may contain preservatives, pH adjusters (acids, bases, or salts thereof), salt compounds (sodium chloride, etc.), aqueous media other than water, etc. as optional ingredients. can.

(pH)
From the viewpoint of safety when used on the body, the pH of the aqueous composition is preferably 3.0 or higher, more preferably 3.2 or higher as the pH at 25°C of an aqueous solution obtained by diluting the aqueous composition 20 times with water. It is. In addition, from the viewpoint of improving the texture of the object to be treated and improving the sustainability of the effect, in particular, the effect of suppressing hair entanglement and improving the sustainability of the effect when used for hair treatment, and the stability of the aqueous composition, It is preferably 7.5 or less, more preferably 7.0 or less, even more preferably 6.0 or less, even more preferably 5.0 or less.
The above pH can be measured by the method described in Examples using a pH meter.

(Method for producing aqueous composition)
The method for producing the composition of the present invention is not particularly limited, but from the viewpoint of the stability of the aqueous composition, the effect of improving the texture of the object to be treated and the sustainability of the effect, in particular, the tangle of hair when used for hair treatment. From the viewpoint of improving the suppressive effect and its sustainability, the stability of the aqueous composition, and the manufacturing efficiency, component (B) and component (C) are dissolved or dispersed in water to form component (B). This method includes the steps of preparing a liquid mixture containing component (C) and component (C), and then mixing the liquid mixture with component (A) or an aqueous solution thereof. By this method, component (C) is held within a crosslinked structure formed by ionic interaction between component (A) and component (B), and a network structure can be efficiently formed.
When a pH adjuster is added, the pH adjuster is added to the mixture containing component (B) and component (C) to adjust the pH to a desired level, and then the mixture is mixed with component (A) or its aqueous solution. Mixing is preferred.

The mixing conditions for mixing the components (A) to (C) 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 device.

[Cosmetic composition]
The present invention further provides a cosmetic composition comprising the aqueous body composition. By applying the cosmetic composition of the present invention to the object to be treated, the effect of improving the texture of the object to be treated and the sustainability of the effect can be improved. In particular, when the cosmetic composition of the present invention is used for hair treatment, the effect of suppressing hair entanglement and its sustainability can be improved.
Types of cosmetic compositions include skin cosmetic compositions and hair cosmetic compositions, with hair cosmetic compositions being preferred from the viewpoint of improving the effect of suppressing hair entanglement and its sustainability.

The aqueous body composition may be used as it is as a cosmetic composition. It is also possible to use the aqueous body composition as a premix for cosmetic compositions. For example, various cosmetic compositions can be prepared by adding additional ingredients to the aqueous composition.
In the aqueous composition, the components (A) to (C) stably exist in the form of the network described above, so even if additional components are added, the network is not easily destroyed. Therefore, it is thought that the cosmetic composition containing the aqueous composition can maintain the effect of improving the texture of the object to be treated and the effect of improving the sustainability of the effect.

The content of the body aqueous composition in the cosmetic composition is usually 1% by mass or more and 80% by mass or less, preferably 10% by mass or more and 60% by mass or less. Further, the content of components (A) to (C) in the cosmetic composition preferably falls within the following range.

The content of component (A) in the cosmetic composition is determined to have the effect of improving the texture of the object to be treated and the sustainability of this effect, and especially to suppress the entanglement of hair when used in hair treatment and to improve the sustainability of the effect. From this point of view, the content is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, still more preferably 0.01% by mass or more, and even more preferably 0.05% by mass or more. In addition, from the viewpoint of stability of the composition and from the viewpoint of exhibiting the effect when blending additional components, preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and even more preferably is 1.5% by mass or less, more preferably 1.0% by mass or less. The content of 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, and even more preferably is from 0.01% by mass to 1.5% by mass, even more preferably from 0.05% by mass to 1.5% by mass, even more preferably from 0.05% by mass to 1.0% by mass.

The content of component (B) in the cosmetic composition is determined to have the effect of improving the texture of the object to be treated and the sustainability of this effect, and especially to suppress the entanglement of hair when used in hair treatment and to improve the sustainability of the effect. From this point of view, the content is preferably 0.0005% by mass or more, more preferably 0.001% by mass or more, still more preferably 0.01% by mass or more, and even more preferably 0.02% by mass or more. In addition, from the viewpoint of stability of the composition and from the viewpoint of exhibiting the effect when blending additional components, preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and even more preferably is 1.5% by mass or less, even more preferably 1.0% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, even more preferably 0.2% by mass. The content is more preferably 0.1% by mass or less. The content of component (B) in the cosmetic composition is preferably 0.0005% by mass or more and 3.0% by mass or less, more preferably 0.001% by mass or more and 2.0% by mass or less, and even more preferably is 0.01% by mass or more and 1.5% by mass or less, even more preferably 0.02% by mass or more and 1.0% by mass or less, even more preferably 0.02% by mass or more and 0.5% by mass or less, even more Preferably 0.02% by mass or more and 0.3% by mass or less, even more preferably 0.02% by mass or more and 0.2% by mass or less, even more preferably 0.02% by mass or more and 0.1% by mass or less. .

The total content of component (A) and component (B) in the cosmetic composition is determined to have the effect of improving the texture of the object to be treated and the sustainability of the effect, especially the effect of suppressing hair entanglement when used for hair treatment. And from the viewpoint of improving its sustainability, it is preferably 0.0015% by mass or more, more preferably 0.01% by mass or more, even more preferably 0.02% by mass or more, even more preferably 0.05% by mass or more. . In addition, from the viewpoint of stability of the composition and from the viewpoint of exhibiting the effect when blending additional components, preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably is 2.0% by mass or less, more preferably 1.5% by mass or less. The total content of component (A) and component (B) in the cosmetic composition is preferably 0.0015% 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. mass% or less, more preferably 0.02 mass% or more and 4.0 mass% or less, even more preferably 0.05 mass% or more and 2.0 mass% or less, even more preferably 0.05 mass% or more and 1.5 mass% or less mass% or less.

The content of component (C) in the cosmetic composition is determined to have the effect of improving the texture of the object to be treated and the sustainability of this effect, especially the effect of suppressing hair entanglement and improving the sustainability of the effect when used in hair treatment. From this point of view, the content is preferably 0.0015% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, even more preferably 0.05% by mass or more. In addition, from the viewpoint of stability of the composition and from the viewpoint of exhibiting the effect when blending additional components, preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably is 2.0% by mass or less, more preferably 1.5% by mass or less. The content of component (C) in the cosmetic composition is preferably 0.0015% 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 even more preferably is from 0.02% by mass to 4.0% by mass, even more preferably from 0.05% by mass to 2.0% by mass, even more preferably from 0.05% by mass to 1.5% by mass.

Additional ingredients that may be added to the cosmetic composition include those that are normally added to skin cosmetic compositions or hair cosmetic compositions, such as surfactants, higher alcohols, oils, organic or inorganic acids, and non-compounds. Ionic polymer, aqueous medium, pH adjuster, feel improver, colorant, antioxidant, anti-dandruff agent, vitamin agent, bactericide, anti-inflammatory agent, preservative, chelating agent, humectant, pearl agent, ceramides , fragrances, plant extracts, ultraviolet absorbers, etc.

When the cosmetic composition contains an oily component such as a higher alcohol or an oily agent, the cosmetic composition may be in the form of an emulsion composition. From the viewpoint of the stability of the composition and the viewpoint of improving the usability, the emulsion composition is preferably an oil-in-water emulsion composition.
The method for producing the cosmetic composition in the form of an emulsified composition is not particularly limited. For example, a method of mixing the aqueous composition and an oily phase containing an oily component, and then optionally adding and mixing an aqueous phase containing an aqueous component other than the aqueous composition and/or another oily component; Examples include a method of mixing an oily phase containing an oily component and an aqueous phase containing an aqueous component other than the aqueous composition, and then adding and mixing the aqueous composition. From the viewpoint of producing a highly stable emulsion composition, improving the texture of the object to be treated and improving the sustainability of this effect, especially from the viewpoint of suppressing hair entanglement and improving its sustainability when used for hair treatment. , by a method of mixing the aqueous composition and an oily phase containing an oily component, and then optionally adding and mixing an aqueous phase containing an aqueous component other than the aqueous composition and/or another oily component, Preferably, an emulsified composition is produced.
The term "aqueous phase" as used herein means a phase that constitutes the aqueous phase in the manufacturing process of an emulsified composition, and the term "oily phase" herein refers to a phase that constitutes an oil phase in the manufacturing process of an emulsified composition. .
Moreover, as the oily component contained in the oily phase here, preferably an ionic surfactant and an amphipathic substance having a hydrophobic group are mentioned. Examples of ionic surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants, and examples of amphiphilic substances having hydrophobic groups include higher alcohols. Examples of "aqueous components other than the aqueous composition" include organic acids or inorganic acids, aqueous media, etc., and examples of "other oil components" include oil agents. Furthermore, other components exemplified as "additional components" can be used as appropriate in the emulsified composition.

Among cosmetic compositions, product forms of skin cosmetic compositions include body soaps, face washes, bath additives, deodorant preparations, makeup cosmetics, sunscreens, makeup bases, milky lotions, serums, creams, etc. It will be done.
Further, product forms of hair cosmetic compositions include hair shampoos, hair rinses, hair conditioners, hair treatments (including non-rinse types), hair styling agents, hair colors, permanent agents, and the like. Among these, from the viewpoint of effectiveness of the effects of the present invention, hair conditioners, hair treatments, or hair styling agents are preferred.

[Hair processing method]
The present invention further provides a hair treatment method comprising the steps of applying the 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, hydrogen bonds between component (B) and component (C) in the film formed on the hair surface by applying the cosmetic composition to the hair and then heating it. It is thought that the durability of the hair entanglement suppressing effect can be further improved because the hair becomes stronger.

In the hair treatment method of the present invention, first, the cosmetic composition is applied to hair. Examples of methods for applying the cosmetic composition include a method of applying, casting, or spraying the cosmetic composition on the hair, a method of dipping the hair in the cosmetic composition, etc., and preferably a method of applying the cosmetic composition to the hair. be.
As a specific example of a method for applying a cosmetic composition to hair, when the cosmetic composition is a hair shampoo, the hair shampoo is applied to the hair, lathered on the hair, and then rinsed away. . When the cosmetic composition is a hair rinse, hair conditioner, hair treatment, or hair pack, for example, after applying these to washed hair and blending them, a rinsing step is performed as necessary.
The hair to which the cosmetic composition is applied may be in either a dry state or a wet state, but preferably the hair is in a wet state.

The amount of the cosmetic composition applied to the hair is a bath ratio to the mass of the hair to which it is applied (mass of the cosmetic composition/dry mass of the hair to which it is applied), preferably 0.005 or more, more preferably 0.01 or more. , more preferably 0.05 or more, and preferably 20 or less, more preferably 15 or less, still more preferably 12 or less.
The hair to which the cosmetic composition is applied may be all or a part of the hair.

After applying the cosmetic composition to the hair and before heating the hair, it is preferable to perform a step of rinsing off the cosmetic composition with water. In this case, in order to fully blend the cosmetic composition into the hair, a time period may be allowed for the cosmetic composition to be left on the hair after it is applied and before it is washed away with water. The standing time is preferably 15 seconds or more, more preferably 30 seconds or more, even more preferably 1 minute or more, and preferably 20 minutes or less, even more preferably 15 minutes or less.
The time for rinsing off the cosmetic composition with water is preferably 5 seconds or more and 3 minutes or less. The temperature of the water may be at a level that does not put a burden on the body, and is preferably 15°C or more and 50°C or less, more preferably 25°C or more and 45°C or less.
The hair to which the cosmetic composition has been applied is preferably dried with a towel, a hair dryer, etc., and then heated.

Preferable methods for heating hair include a method using a flat iron. The heating temperature of the hair is 80° C. or higher, preferably 100° C. or higher, more preferably 120° C. or higher, and even more preferably 140° C. or higher, from the viewpoint of further improving the sustainability of the hair entanglement suppressing effect. Moreover, from the viewpoint of suppressing hair damage, the temperature is preferably 220°C or lower, more preferably 200°C or lower.
Hair treated by the above method tends to maintain the effect that the hair is less likely to get tangled even if the hair is washed repeatedly.

Regarding the above embodiments, the present invention discloses the following.
<1>
An aqueous body composition containing (A) a cationic polymer whose viscosity at 30° C. of a 1% by mass aqueous solution is 1,000 mPa·s or more, (B) an anionic polymer, (C) a nonionic polymer, and water. .
<2>
The viscosity of the 1% by mass aqueous solution of component (A) at 30° C. is 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, and even more preferably is 1,500 mPa·s or more and 50,000 mPa·s or less, more preferably 1,700 mPa·s or more and 30,000 mPa·s or less, even more preferably 1,800 mPa·s or more and 25,000 mPa·s or less, The aqueous composition for the body according to <1>.
<3>
The cationic charge density of the component (A) is preferably 0.1 mmol/g or more and 20 mmol/g or less, more preferably 0.2 mmol/g or more and 15 mmol/g or less, and more preferably 0.2 mmol/g or more and 12 mmol/g or less. More preferably 0.3 mmol/g or more and 10 mmol/g or less, even more preferably 0.3 mmol/g or more and 7.0 mmol/g, even more preferably 0.5 mmol/g or more and 5.0 mmol/g or less, The aqueous body composition according to <1> or <2>.
<4>
The component (A) is a cationized polyvinyl alcohol, polyethyleneimine, methacryloylethyltrimethylammonium salt polymer, quaternized dialkylaminoalkyl ( meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamide propyltrimethylammonium salt polymer, vinylimidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16), vinylpyrrolidone/alkylamino ( meth)acrylate copolymer, vinylpyrrolidone/alkylamino(meth)acrylate/vinylcaprolactam copolymer, alkylacrylamide/(meth)acrylate/alkylaminoalkylacrylamide/polyethylene glycol (meth)acrylate copolymer, and adipic acid - The body aqueous composition according to any one of <1> to <3>, which is one or more selected from the group consisting of dimethylaminohydroxypropylethylenetriamine copolymers.
<5>
The aqueous body composition according to any one of <1> to <4>, wherein the component (A) is a polymer containing a structural unit represented by the following general formula (1).

In formula (1), R ¹ is a hydrogen atom or a methyl group, and R ² to R ⁴ are each independently an alkyl group having 1 to 4 carbon atoms. X is -O- or -NH-, and m is a number from 1 to 4.
<6>
The structural unit represented by the general formula (1) is a structural unit derived from methacryloylethyl trimethyl ammonium salt, a structural unit derived from N,N-dimethylaminoethyl methacrylate diethyl sulfate, and methacrylamide propyl trimethyl ammonium. Consisting of one or more constituent units selected from the group consisting of constituent units derived from salts, preferably constituent units originating from methacryloylethyltrimethylammonium salt, and constituent units originating from N,N-dimethylaminoethyl methacrylate diethyl sulfate. The body aqueous composition according to <5>, which is one or more selected from the group.
<7>
The body water base 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% or more and 100 mol% or less. Composition.
<8>
The component (A) is preferably one or more selected from the group consisting of methacryloylethyl trimethylammonium salt polymers and quaternized dialkylaminoalkyl (meth)acrylate polymers, more preferably methacryloylethyl chloride. Trimethylammonium polymer (Polyquaternium-37), methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride/methoxypolyethylene glycol methacrylate copolymer (Polyquaternium-49), methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride/methacrylic acid 2- selected from the group consisting of hydroxyethyl copolymer (polyquaternium-48), and N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/dimethacrylate polyethylene glycol copolymer (polyquaternium-52) one or more types, more preferably methacryloylethyltrimethylammonium chloride polymer (polyquaternium-37) and N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/dimethacrylate polyethylene glycol copolymer ( The aqueous body composition according to any one of <1> to <7>, which is one or more selected from the group consisting of polyquaternium-52).
<9>
<1> to <8>, wherein the component (B) contains one or more selected from the group consisting of (B1) a crosslinked polymer containing a structural unit derived from (meth)acrylic acid and an anionic polysaccharide; The aqueous body composition according to any one of the above.

<10>
The crosslinked polymer containing structural units derived from (meth)acrylic acid is a homopolymer or copolymer of (meth)acrylic acid having a crosslinked structure, or a salt thereof, preferably a carboxyvinyl polymer or its salt. one or more selected from the group consisting of salt, (acrylates/alkyl acrylate (C10-30)) crosspolymer, (sodium acrylate/acryloyldimethyltaurine/dimethylacrylamide) crosspolymer, and acrylates crosspolymer-4. , the aqueous body composition according to <9>.
<11>
The body water base according to <9> or <10>, wherein the anionic polysaccharide is one or more selected from the group consisting of a polysaccharide having a carboxyl group, a sulfate of a polysaccharide, and a salt thereof. Composition.
<12>
The component (B1) is preferably one or more selected from the group consisting of carboxyvinyl polymer, (acrylates/alkyl acrylate (C10-30)) crosspolymer, and anionic polysaccharide, and more preferably anionic polysaccharide. The aqueous composition for the body according to any one of <1> to <11>, which is a polysaccharide or a salt thereof, more preferably alginic acid or a salt thereof.
<13>
The anion 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 still more preferably 3.5 mmol/g or more and 15 mmol/g. The aqueous body composition according to any one of <9> to <12> below.
<14>
The weight average molecular weight (Mw) of the anionic polysaccharide is preferably 2,000 or more and 3,500,000 or less, more preferably 10,000 or more and 3,000,000 or less, still more preferably more than 30,000 and 3,000,000 or less, even more preferably The aqueous body composition according to any one of <9> to <13>, which has a molecular weight of 50,000 or more and 3,000,000 or less.
<15>
The content of the component (B1) in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, even more preferably 80% by mass or more. , 100% by mass or less, the aqueous body composition according to any one of <9> to <14>.
<16>
The aqueous body composition according to any one of <9> to <15>, wherein the component (B) further contains (B2) an anionic polymer other than the component (B1).
<17>
The molecular weight of the component (B2) is preferably 1,000 or more and 50,000 or less, more preferably 1,000 or more and 30,000 or less, still more preferably 2,000 or more and 30,000 or less, even more preferably 5, 000 or more and 30,000 or less, more preferably 10,000 or more and 30,000 or less.
<18>
The component (B2) is a polymer having a carboxy group, preferably having a molecular weight of 1,000 or more and 50,000 or less, more preferably 1,000 or more and 30,000 or less, and more preferably a molecular weight of 1,000 or more and 30,000 or more. ,000 or less, the aqueous body composition according to <16> or <17>, which is a non-crosslinked polymer containing a structural unit derived from (meth)acrylic acid.
<19>
<16> The component (B2) is one or more selected from the group consisting of poly(meth)acrylic acid, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, and salts thereof. - The aqueous body composition according to any one of <18>.

<20>
The anion 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 still more preferably 5.0 mmol/g or more and 15 mmol/g. The aqueous body composition according to any one of <16> to <19> below.
<21>
The content of the component (B2) in the 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, even more preferably 3% by mass or more and 30% by mass. The aqueous composition for the body according to any one of <16> to <20>, further preferably 5% by mass or more and 20% by mass or less.
<22>
The mass ratio of the component (B2) to the total amount of the component (B1) and the component (B2) [(B2)/{(B1)+(B2)}] is preferably 0.01 or more and 1.0 Any of <16> to <21> below, more preferably 0.02 or more and 0.80 or less, still more preferably 0.05 or more and 0.50 or less, even more preferably 0.08 or more and 0.30 or less. The aqueous composition for the body according to item 1.
<23>
The component (C) is polyalkylene glycol or a derivative thereof, a polymer containing a constitutional unit derived from vinylpyrrolidone, a polymer containing a constitutional unit derived from a (meth)acrylic acid ester, polyvinyl alcohol, polyacrylamide, and polycaprolactam. one or more selected from the group consisting of, preferably polyalkylene glycol or its derivative, and one or more selected from the group consisting of a polymer containing a constitutional unit derived from vinylpyrrolidone, more preferably polyethylene glycol, polypropylene glycol , polyethylene glycol-polypropylene glycol copolymer, mono- or di-fatty acid ester thereof, and polyvinylpyrrolidone, and more preferably polyethylene glycol, polyethylene glycol-polypropylene glycol copolymer, these The aqueous body composition according to any one of <1> to <22>, which is one or more selected from the group consisting of mono- or di-fatty acid esters, and polyvinylpyrrolidone.
<24>
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 even more preferably 10,000 or more and 1,500,000 or less. The aqueous body composition according to any one of <1> to <23> below.
<25>
The content of the component (A) in the body aqueous composition is preferably 0.01% by mass or more and 3.0% by mass or less, more preferably 0.02% by mass or more and 2.5% by mass or less, and further Preferably from 0.05% by mass to 2.0% by mass, even more preferably from 0.1% by mass to 1.5% by mass, even more preferably from 0.2% by mass to 1.5% by mass, and more. The aqueous body composition according to any one of <1> to <24>, which further preferably has a content of 0.2% by mass or more and 1.0% by mass or less.
<26>
The content of the component (B) in the body aqueous composition is preferably 0.005% by mass or more and 3.0% by mass or less, more preferably 0.01% by mass or more and 2.0% by mass or less, and further Preferably 0.02% by mass or more and 1.5% by mass or less, even more preferably 0.02% by mass or more and 1.0% by mass or less, even more preferably 0.02% by mass or more and 0.5% by mass or less, and more. More preferably 0.02 mass% or more and 0.3 mass% or less, even more preferably 0.02 mass% or more and 0.3 mass% or less, even more preferably 0.02 mass% or more and 0.2 mass% or less, The content according to any one of <1> to <25> is even more preferably 0.02% by mass or more and 0.1% by mass or less, even more preferably 0.04% by mass or more and 0.1% by mass or less. Aqueous composition for the body.
<27>
The total content of the component (A) and the component (B) in the body aqueous composition is preferably 0.02% by mass or more and 5.0% by mass or less, more preferably 0.04% by mass or more4. .0 mass% or less, more preferably 0.05 mass% or more and 3.0 mass% or less, even more preferably 0.1 mass% or more and 2.0 mass% or less, even more preferably 0.2 mass% or more2. The aqueous body composition according to any one of <1> to <26>, which has a content of .0% by mass or less, more preferably 0.3% by mass or more and 2.0% by mass or less.
<28>
The mass ratio [(A)/(B)] of the component (A) to the component (B) in the body aqueous composition is preferably 1.0 or more and 30 or less, more preferably 2.0 or more and 20 or less. Any one of <1> to <27> below, more preferably 3.0 or more and 15 or less, even more preferably 4.0 or more and 12 or less, even more preferably 5.0 or more and 10 or less. The aqueous body composition described in .
<29>
The ratio of the number of moles of cationic charge of the component (A) to the number of moles of anionic charge of the component (B) in the aqueous body composition is preferably 10/90 to 95/5, more preferably The aqueous body composition according to any one of <1> to <28>, which has an amount of 20/80 to 95/5, more preferably 25/75 to 90/10.

<30>
The content of component (C) in the body aqueous composition is preferably 0.02% by mass or more and 5.0% by mass or less, more preferably 0.04% by mass or more and 4.0% by mass or less, and even more preferably is 0.05% by mass or more and 3.0% by mass or less, even more preferably 0.1% by mass or more and 2.0% by mass or less, even more preferably 0.2% by mass or more and 2.0% by mass or less, even more The aqueous body composition according to any one of <1> to <29>, preferably 0.3% by mass or more and 2.0% by mass or less.
<31>
The mass ratio of the component (C) to the total amount of the component (A) and the component (B) in the body aqueous composition [(C)/{(A)+(B)}] is preferably 0.2 or more and 20 or less, more preferably 0.3 or more and 15 or less, still more preferably 0.4 or more and 10 or less, even more preferably 0.5 or more and 8.0 or less, even more preferably 0.6 or more and 5. The aqueous composition for the body according to any one of <1> to <30>, which is 0 or less, more preferably 0.8 or more and 2.0 or less, even more preferably 0.8 or more and 1.5 or less. .
<32>
The content of water in the body aqueous composition is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, even more preferably 90% by mass or more, <1 The aqueous body composition according to any one of >> to <31>.
<33>
The pH at 25° C. of an aqueous solution obtained by diluting the body aqueous composition 20 times with water is preferably 3.0 or more, more preferably 3.2 or more, and preferably 7.5 or less, more preferably 7. The aqueous body composition according to any one of <1> to <32>, which has a molecular weight of 0 or less, more preferably 6.0 or less, even more preferably 5.0 or less.
<34>
A mixed solution containing the component (B) and the component (C) is prepared by dissolving or dispersing the component (B) and the component (C) in water, and then the mixed solution and the component (A) are dissolved or dispersed in water. ) or an aqueous solution thereof, the method for producing an aqueous body composition according to any one of <1> to <33>.
<35>
A cosmetic composition comprising the body aqueous composition according to any one of <1> to <34>.
<36>
The cosmetic composition according to <35>, wherein the content of the body aqueous composition in the cosmetic composition is 1% by mass or more and 80% by mass or less, preferably 10% by mass or more and 60% by mass or less. .
<37>
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, and even more preferably is 0.01 mass% or more and 1.5 mass% or less, even more preferably 0.05 mass% or more and 1.5 mass% or less, even more preferably 0.05 mass% or more and 1.0 mass% or less, The cosmetic composition according to <35> or <36>.
<38>
The content of the component (B) in the cosmetic composition is preferably 0.0005% by mass or more and 3.0% by mass or less, more preferably 0.001% by mass or more and 2.0% by mass or less, and even more preferably is 0.01% by mass or more and 1.5% by mass or less, even more preferably 0.02% by mass or more and 1.0% by mass or less, even more preferably 0.02% by mass or more and 0.5% by mass or less, even more Preferably 0.02% by mass or more and 0.3% by mass or less, even more preferably 0.02% by mass or more and 0.2% by mass or less, even more preferably 0.02% by mass or more and 0.1% by mass or less. , the cosmetic composition according to any one of <35> to <37>.
<39>
The total content of the component (A) and the component (B) in the cosmetic composition is preferably 0.0015% by mass or more and 5.0% by mass or less, more preferably 0.01% by mass or more4. 0% by mass or less, more preferably 0.02% by mass or more and 4.0% by mass or less, even more preferably 0.05% by mass or more and 2.0% by mass or less, even more preferably 0.05% by mass or more1. The cosmetic composition according to any one of <35> to <38>, which has a content of 5% by mass or less.

<40>
The content of the component (C) in the cosmetic composition is preferably 0.0015% 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 even more preferably is 0.02% by mass or more and 4.0% by mass or less, even more preferably 0.05% by mass or more and 2.0% by mass or less, even more preferably 0.05% by mass or more and 1.5% by mass or less. The cosmetic composition according to any one of <35> to <39>.
<41>
A hair treatment method comprising applying the cosmetic composition according to any one of <35> to <40> to hair, and then heating the hair to a temperature of 80° C. or higher.
<42>
The amount of the cosmetic composition applied to the hair is preferably 0.005 or more, more preferably 0.005 or more, as a bath ratio (mass of the cosmetic composition/dry mass of the hair to be applied) to the mass of the hair to which it is applied. 01 or more, more preferably 0.05 or more, preferably 20 or less, more preferably 15 or less, still more preferably 12 or less.
<43>
The method for treating hair according to <41> or <42>, wherein after applying the cosmetic composition to the hair and before heating the hair, a step of rinsing off the cosmetic composition with water is performed.
<44>
The heating temperature of the hair is preferably 100°C or higher, more preferably 120°C or higher, even more preferably 140°C or higher, and preferably 220°C or lower, more preferably 200°C or lower, <41> to <43 ＞The hair treatment method according to any one of ＞.

EXAMPLES Hereinafter, the present invention will be explained with reference to examples, but the present invention is not limited to the scope of the examples. In addition, each measurement and evaluation in an Example was performed by the following method.

(Measurement of viscosity of 1% by mass aqueous solution of cationic polymer)
An aqueous solution containing 1% by mass of the active ingredient of the cationic polymer (component (A) or component (A')) used in each example was prepared, and a B-type viscometer (manufactured by Toki Sangyo Co., Ltd., TVB-10) was measured. The viscosity of an aqueous solution at 30°C was measured using the following method. In this example, cationic polymers other than component (A) were referred to as "component (A')."

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

(Preparation for damage tress)
Mix 7 mL of "Kao Foam Hair Bleach L" (first agent) and 15 mL of "Kao Foam Hair Color d" (second agent) manufactured by Kao Corporation, and apply to a Japanese hair tress with a length of 20 cm and a weight of 20 g. did. After standing for 20 minutes, it was thoroughly rinsed with warm water at 35 to 40°C (bleach treatment). Thereafter, it was washed twice with plain shampoo having the following composition. The bleaching process was repeated four times to produce damage traces for evaluation.

(Measurement of combing force immediately after treatment with aqueous composition)
(1) Add 10 g ± 0.5 g of water to 20 g of Damage Torre, apply 4 mL of the aqueous composition of each example, blend by hand, leave for 30 seconds, and rinse with warm water at 35-40°C for 15 seconds. is.
(2) After rinsing, adjust the water content of the tress to 10g, comb it with a brush to completely untangle it, and then set it in a combing force measuring device (KOT-0303, manufactured by Utsunomiya Seiki Co., Ltd.) and use it for commercial purposes. A hairbrush SL-801 (manufactured by Sunbee Kogyo Co., Ltd.) was passed through the top of the tress, combed manually at a constant speed (60 rpm), and the load (g) applied when the comb was passed through to the tips of the hair was measured. . Combing was performed 50 times, and the average value of the combing loads at 50 points in total was taken as the value of "combing force immediately after treatment." The smaller the combing force value, the less tangled the hair is, indicating a better result. The combing load of DamageTress (10 g±0.5 g water content) which was not treated with the aqueous composition was 1568 g.

[Plain shampoo composition]
(mass%)
Polyoxyethylene (2.0) Sodium lauryl ether sulfate (*1): 15.5
Lauric acid diethanolamide (*2): 2.2
Edetate disodium: 0.15
Sodium benzoate: 0.18
Oxybenzone: 0.03
Phosphoric acid: 0.07
Sodium chloride: 0.8
Fragrance: 0.4
Purified water: remaining amount
Total: 100.00
(*1) 42.0% by mass as Emar E-27C (manufactured by Kao Corporation, active ingredient 27% by mass)
(*2) Aminone C-11S (manufactured by Kao Corporation)

(Measurement of combing force after treatment with aqueous composition + hair washing twice)
After carrying out (1) and (2) in the above-mentioned "Measurement of combing force immediately after treatment", the following (3) was carried out twice.
(3) After towel drying and drying with a dryer, the tresses were wetted again with water, and the front and back of the tresses were rubbed 20 times for 30 seconds with 1 mL of the plain shampoo, and rinsed for 15 seconds.
Thereafter, the operation (2) was performed and the combing force was measured. If the combing force was 850 g or less, it was judged that the durability was good.

(Measurement of combing force after treatment with aqueous composition + hair washing 4 times)
After performing (1) to (2) in the above-mentioned "Measurement of combing force immediately after treatment," (3) was performed four times, and then operation (2) was performed again to measure the combing force. It was determined that the smaller the value of the combing force, the better the durability, and if the combing force was 950 g or less, the durability was better.

(Measurement of combing force after treatment with aqueous composition + heat treatment + hair washing 4 times)
After performing (1) and (2) in the above-mentioned "Measurement of combing force immediately after treatment," the tresses were towel-dried and dried with a dryer. Next, while applying tension with a comb, straight setting was performed 10 times using a flat iron ("VOSS GF (L41)" manufactured by GOLDWELL) set at 180° C. (heat treatment). After the heat treatment, (3) was performed four times, and then (2) was performed to measure the combing force.

Examples 1 to 21, Comparative Examples 1 to 14 (preparation and evaluation of aqueous compositions)
An aqueous composition was prepared using the ingredients listed in the table according to the following procedure.
2% by mass aqueous solution of cationic polymer (component (A) or component (A')), (B1) 2% by mass aqueous solution of anionic polymer, (B2) 1% by mass aqueous solution of anionic polymer, and (C) A 5% by mass aqueous solution of a nonionic polymer was prepared. These aqueous solutions, the other components listed in the table, and the remaining amount of water were mixed so that the amounts of each component were as listed in the table. Specifically, water, (B1) anionic polymer aqueous solution, (C) nonionic polymer aqueous solution, (B2) anionic polymer aqueous solution, and acid (salt in Comparative Examples 12 to 14) were added in this order. Stir with a pencil mixer. While stirring was continued, a cationic polymer (component (A) or component (A')) aqueous solution was gradually added to obtain an aqueous composition.
Using the obtained aqueous composition, evaluation was performed by the method described above. The results are shown in Tables 1-6.

The components listed in the table are as follows. Furthermore, the amounts (% by mass) listed in the table are the effective amounts of each component.
<Component (A): Cationic polymer>
*1 Polyquaternium-52 (N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/polyethylene glycol dimethacrylate copolymer), "Sofcare KG-101W-E" manufactured by Kao Corporation ( Active ingredient amount 2.4% by mass)
*2 Polyquaternium-52 (N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/polyethylene glycol dimethacrylate copolymer), "Sofcare KG-301W" manufactured by Kao Corporation (active ingredient) Amount 4.02% by mass)
*3 Polyquaternium-37 (methacryloylethyltrimethylammonium chloride polymer), "Cosmedia Ultragel 300" manufactured by BASF Japan Ltd., content of the structural unit represented by general formula (1): 100 mol% (active ingredient amount 96 .9% by mass)

<Component (A'): Cationic polymer other than component (A)>
*4 Polyquaternium-37 (methacryloylethyltrimethylammonium chloride polymer), "KP Polymer E" manufactured by Kao Corporation (active ingredient amount 35% by mass)
*5 Polyquaternium-6 (dimethyldiallylammonium chloride polymer), Lubrizol Advanced Materials, Inc. "Marquat 100" (active ingredient amount 41.6% by mass)
*6 Polyquaternium-22 (dimethyldiallylammonium chloride/acrylic acid copolymer liquid), Lubrizol Advanced Materials, Inc. “Marquat 295” (active ingredient amount 37% by mass)
*7 Polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gaffcut 440" manufactured by Ashland Japan Co., Ltd. (active ingredient amount 30% by mass)
*8 Polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gaffcut 734" manufactured by Ashland Japan Co., Ltd. (active ingredient amount 50% by mass)
*9 Polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate), "Gaffcut 755N" manufactured by Ashland Japan Co., Ltd. (active ingredient amount 20% by mass)

<Component (B1): Anionic polymer>
*10 Sodium alginate, "Kimica Algin I-3-150" manufactured by Kimica Co., Ltd., Mw: 1.9 million to 2.3 million *11 Sodium alginate, "Kimica Algin IL-2" manufactured by Kimica Co., Ltd., Mw: 500,000 to 900,000 *12 Carboxymethylcellulose, “Celogen F-5” manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
*13 Carboxyvinyl polymer, Lubrizol Advanced Materials, Inc. Manufactured by "Carbopol 980"
*14 (Acrylates/alkyl acrylate (C10-30)) crosspolymer, Lubrizol Advanced Materials, Inc. "Pemuren TR-1" manufactured by

<Component (B2): Anionic polymer>
*15 (acrylic acid/stearyl acrylate) copolymer, “Sofcare SA-37W” manufactured by Kao Corporation (active ingredient amount 10% by mass)
*16 Polyacrylic acid, “Jurimar AC-10L” manufactured by Toagosei Co., Ltd. (active ingredient amount 40% by mass)

<Component (C): Nonionic polymer>
*17 Polyethylene glycol, "Brownon PEG-20000S" manufactured by Aoki Yushi Kogyo Co., Ltd., Mw: 20,000 *18 Polyethylene glycol, "Wako Polyethylene Glycol 6,000" manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., Mw: 6, 000
*19 Polyvinylpyrrolidone, "Rubiscol K90" manufactured by BASF Japan Co., Ltd., Mw: 1.2 million *20 Polyoxyethylene polyoxypropylene glycol (150E.O.) (35P.O.), manufactured by NOF Corporation " Pronon #208”
*21 Polyoxyethylene polyoxypropylene glycol (240E.O.) (60P.O.), “Unilube 75DE-2620R” manufactured by NOF Corporation
*22 Polyethylene glycol distearate, “Emulmin 862” manufactured by Sanyo Chemical Industries, Ltd.

<acid>
*23 90% lactic acid, PURAC Thailand Ltd. “PURAC ULTRAPURE90” (active ingredient amount 90% by mass)

As shown in the table, it can be seen that the hair treated with the aqueous composition of this example was less likely to get tangled, and the treatment effect was maintained even after hair washing. In addition, from the results of Examples 3, 6, and 7, it was found that when the hair treated with the aqueous composition of this example was heated to a temperature of 80°C or higher, the hair was washed four times compared to when no heat treatment was performed. It can be seen that the combing force is lower and the hair tangle prevention effect is improved.

According to the present invention, the effect of improving the texture of the object to be treated and the sustainability of the effect can be improved, and in particular, when used for hair treatment, the effect of suppressing hair entanglement and the sustainability of the effect can be improved. Aqueous compositions can be provided.
The aqueous composition can be used as various cosmetic compositions such as skin cosmetic compositions and hair cosmetic compositions. It is also possible to use the aqueous composition as a premix for various cosmetic compositions. For example, a skin cosmetic composition or a hair cosmetic composition can be prepared by adding additional ingredients to the aqueous composition.

Claims (13)

An aqueous body composition containing (A) a cationic polymer whose viscosity at 30° C. of a 1% by mass aqueous solution is 1,000 mPa·s or more, (B) an anionic polymer, (C) a nonionic polymer, and water. . The aqueous body composition according to claim 1, wherein the component (A) is a polymer containing a structural unit represented by the following general formula (1).

In formula (1), R ¹ is a hydrogen atom or a methyl group, and R ² to R ⁴ are each independently an alkyl group having 1 to 4 carbon atoms. X is -O- or -NH-, and m is a number from 1 to 4. Claim 1 or 2, wherein the mass ratio [(A)/(B)] of the component (A) to the component (B) contained in the body aqueous composition is 1.0 or more and 30 or less. Aqueous composition for the body. The mass ratio of the component (C) to the total amount of the component (A) and the component (B) contained in the body aqueous composition [(C)/{(A)+(B)}] is 0. The aqueous composition for body use according to any one of claims 1 to 3, which has a molecular weight of .2 or more and 20 or less. According to any one of claims 1 to 4, the component (C) is one or more selected from the group consisting of polyalkylene glycol or a derivative thereof, and a polymer containing a constitutional unit derived from vinylpyrrolidone. Aqueous composition for the body. Any one of claims 1 to 5, wherein the component (B) contains one or more selected from the group consisting of (B1) a crosslinked polymer containing a structural unit derived from (meth)acrylic acid and an anionic polysaccharide. The aqueous composition for the body as described in section. The aqueous body composition according to claim 6, wherein the component (B1) is alginic acid or a salt thereof. The aqueous body composition according to claim 6 or 7, wherein the component (B) further contains (B2) an anionic polymer other than the component (B1). The aqueous composition for the body according to claim 8, wherein the component (B2) is a non-crosslinked polymer having a molecular weight of 1,000 or more and 30,000 or less and containing a (meth)acrylic acid-derived structural unit. The aqueous composition for the body according to any one of claims 1 to 9, wherein the aqueous solution obtained by diluting the aqueous composition for the body 20 times with water has a pH of 5.0 or less at 25°C. The component (A) is selected from the group consisting of methacryloylethyltrimethylammonium chloride polymer and N,N-dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/dimethacrylic acid polyethylene glycol copolymer. The aqueous composition for the body according to any one of claims 1 to 10, which is of at least one species. A cosmetic composition comprising the body aqueous composition according to any one of claims 1 to 11. A hair treatment method comprising applying the cosmetic composition according to claim 12 to hair, and then heating the hair to a temperature of 80° C. or higher.