JP2023063937A - Aqueous composition for body - Google Patents

Abstract

To provide an aqueous composition for body enabling a coating film excellent in self-healing property to be formed, enabling moisture resistance and substantivity thereof to be imparted to a treatment object, and, in particular, enabling suppression of spreading of the hair under high humidity conditions when used for hair treatment.SOLUTION: An aqueous composition for body is provided, which contains: one or more polymers (A) selected from a group consisting of a cationic polymer having a weight average molecular weight of 120000 or less and a cationic charge density of 2.0 meq/g or more and 24 meq/g or less and an amphoteric polymer; and an anionic polymer (B) having a weight average molecular weight of 10000 or less and an anionic charge density of 8.0 meq/g or more, and which has a content of a surfactant (C) of less than 1 mass%.SELECTED DRAWING: None

Description

The present invention relates to aqueous body compositions.

Aqueous compositions for treating keratin materials containing cationic and anionic polymers are known. For example, in US Pat. No. 5,200,000, a composition for the treatment of keratinous substances, which is characterized by containing at least one anionic polymer and at least one cationic polymer in a solvent medium, is used to treat, in particular, hair, skin or nails. It is stated that the anionic polymer can be fixed to the keratinous material that can be included. Moreover, it is assumed that the reason why the above effect is obtained is related to a complex formed by interaction between the anionic polymer and the cationic polymer.

Regarding hair cosmetics containing cationic polymers and anionic polymers, Patent Document 2 describes a cationic polymer with a charge density of 5.0 to 7.0 meq/g and a specific polymer with a weight average molecular weight of 500 to 50,000. A hair cosmetic containing an anionic polymer (polyaspartic acid) having a structure can improve the feel and appearance of damaged hair as if it were healthy hair, especially wet hair and dry hair. It is described that the cohesiveness of the hair can be improved, and these effects can be maintained without being impaired by repeated hair washing.
Further, in Patent Document 3, a cationic polymer having a charge density within a predetermined range and a predetermined anionic structural unit containing 80% by mass or more and 100% by mass or less, and having a weight average molecular weight of 4,000 or more and 80,000 or less It is described 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.

JP-A-53-139734 JP 2015-151374 A JP 2015-166333 A

As described in Patent Document 1 and the like, an aqueous composition containing a complex formed from a cationic polymer and an anionic polymer (hereinafter also referred to as a "polyion complex") is added to a composition for treating keratin substances such as hair. known to use. However, there is room for improvement in improving the performance as a composition for treating keratin substances.

A hydrophobic film can be formed by applying a treatment composition containing a polyion complex to an object to be treated. A polyion complex is an assembly formed by chemical electrostatic interactions between a cationic polymer and an anionic polymer. Bonds formed by such interactions are reversible unlike covalent bonds. Therefore, even if the surface of the film containing the polyion complex is damaged by friction or the like, it can be repaired by its self-repairing action over time.
However, Patent Documents 1 to 3 do not particularly describe the self-healing action of a film containing a polyion complex. In the techniques disclosed in Patent Documents 1 to 3, specific cationic polymers and anionic polymers are used, but any combination of cationic polymers and anionic polymers does not exhibit a self-repairing action, and further self-repairing of the film is possible. It is desired to improve the quality.

By improving the self-healing property of the formed film, it is expected that the performance of the keratin substance as a treatment composition will be improved. For example, when the treatment composition is used as a hair treatment composition such as a hair conditioner, even if the treated hair is subjected to a load in daily life such as friction, the film formed on the hair surface is It is considered that the self-repairing action of the treatment can be sustained. Since a film containing a polyion complex is usually hydrophobic, the formation of a film on the surface of hair imparts moisture resistance, and is expected to have the effect of, for example, suppressing the spread of hair even under high humidity conditions. However, Patent Documents 1 to 3 do not discuss the effect of suppressing the spread of hair, and such prior arts have not been able to achieve any particular effect.

INDUSTRIAL APPLICABILITY The present invention is capable of forming a film having excellent self-repairing properties, and can impart moisture resistance and durability to an object to be treated. The present invention relates to an aqueous composition for the body, capable of suppressing spreading of hair.

The present inventors have found that a polymer having one or more groups selected from the group consisting of a cationic group and an amphoteric group, having a molecular weight and a cationic charge density within a predetermined range, and an anionic polymer, and an interface It has been found that the above problems can be solved by an aqueous composition having an active agent content of less than a predetermined value.
That is, the present invention
(A) one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, having a weight average molecular weight of 120,000 or less and a cationic charge density of 2.0 meq/g or more and 24 meq/g or less; (B) contains an anionic polymer having a weight average molecular weight of 10,000 or less and an anion charge density of 8.0 meq/g or more, and (C) a surfactant content of less than 1% by mass. It relates to an aqueous body composition.

According to the present invention, it is possible to form a film having excellent self-healing properties, and it is possible to impart moisture resistance and durability to an object to be treated. It is possible to provide an aqueous body composition that can suppress the spread of hair under high humidity conditions even after being subjected to friction such as.
The aqueous composition can be used as body compositions such as skin cosmetic compositions and hair cosmetic compositions. It is also possible to use the aqueous composition as a premix for skin cosmetic compositions or hair cosmetic compositions. For example, a skin cosmetic composition or hair cosmetic composition can be prepared by blending additional components into the aqueous composition.

<Definition>
As used herein, the term "aqueous composition for the body" means an aqueous composition used for treating the surface of the body, for example, the surface of keratinous substances such as skin, hair and nails. "Aqueous composition" means a composition containing water as the main component, preferably the water content is 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, and still more Preferably 80% by mass or more, more preferably 90% by mass or more, still more preferably 95% by mass or more, and even more preferably 98% by mass or more.
The aqueous body composition of the present invention is preferably an aqueous composition for treating keratin substances, and more preferably for treating skin or hair, from the viewpoint of exerting the effect resulting from the self-repairing properties of the formed film. It is an aqueous composition.
In the present specification, "containing component X" also includes blending component X.

[Aqueous body composition]
The body aqueous composition of the present invention (hereinafter also simply referred to as "aqueous composition" or "composition of the present invention") is
(A) one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, having a weight average molecular weight of 120,000 or less and a cationic charge density of 2.0 meq/g or more and 24 meq/g or less; (B) contains an anionic polymer having a weight average molecular weight of 10,000 or less and an anionic charge density of 8.0 meq/g or more; and (C) a surfactant content of less than 1% by mass.
By having the above constitution, the composition of the present invention can form a film having excellent self-repairing properties, and can impart moisture resistance and durability to the object to be treated, especially when used for hair treatment. can suppress the spread of hair under high humidity conditions.

Although the reason why the composition of the present invention exhibits the above effects is not clear, it is considered as follows.
The composition of the present invention contains a polyion complex formed from component (A) and component (B). The polyion complex is usually poorly soluble in water and highly adsorbable to a treatment object such as a keratin substance. Therefore, by applying a composition containing the polyion complex to the body surface, a film with high moisture resistance can be formed. it is conceivable that.
The chemical electrostatic interaction acting between component (A) and component (B) in the polyion complex is reversible unlike covalent bonding. After forming a hydrophobic film containing a polyion complex on the hair surface, even if the surface of the film is damaged by friction or the like, water vapor in the air triggers self-repairing action over time. It is believed that the film is repaired. Due to the self-repairing action of the hydrophobic film as described above, when the composition of the present invention is used for hair treatment, it is possible to suppress the spread of hair exposed to high humidity conditions for a long time, and to maintain the effect. expected to improve.
Here, the present inventors have found that the self-repairing performance of the film depends on the molecular weights and charge densities of the components (A) and (B), which are polymer components. It is believed that the formation of a crosslinked structure between component (A) and component (B) allows the formed film to exhibit high elastic modulus and water vapor barrier properties. On the other hand, in the composition of the present invention, the molecular weights of component (A) and component (B) are each a predetermined value or less, and the charge density is within a predetermined range, so that the crosslink density and Since an excessive increase in elastic modulus can be suppressed, it is thought that the self-healing property of the film is improved. In particular, the film formed using the composition of the present invention has a relatively low molecular weight of the components (A) and (B) used, and the crosslink density is not excessively high. However, it tends to swell and soften under high humidity. Due to this property, the self-repairing property of the film under high humidity is further improved, and it is considered that the effect of suppressing the spread of hair when used for hair treatment and the durability thereof are improved.
Furthermore, the composition of the present invention contains less than 1% by mass of surfactant as component (C). When the content of the component (C) is small, the formation of the polyion complex by the component (A) and the component (B) is less likely to be inhibited by the component (C), and the film formed using the composition of the present invention. It is considered that the self-repairing property of hair treatment and the effect of suppressing hair spreading under high humidity conditions when used for hair treatment are improved.

(Component (A): one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers)
Component (A) is at least one polymer selected from the group consisting of cationic polymers and amphoteric polymers, capable of forming a polyion complex through interaction with component (B).
Component (A), a cationic polymer, means a polymer that preferably has cationic groups and is substantially free of anionic and amphoteric groups. "Substantially free of anionic groups and amphoteric groups" means that the molar amount of anionic groups and amphoteric groups to cationic groups is preferably 0.1% or less.
The amphoteric polymer as component (A) is preferably a polymer having a cationic group and an anionic group, a 1% aqueous solution of the polymer having a pH of less than 5.1 at 25°C, and a total charge of the polymer is a positively charged polymer. The pH can be measured with a pH meter.
As used herein, the cationic group is 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, a A quaternary ammonium group is mentioned.
The anionic group is an anionic group, or a group that can be ionized to become an anionic group, and specifically, one or more selected from the group consisting of acidic groups such as a carboxy group, a sulfonic acid group, and a phosphoric acid group. and preferably one or more selected from a carboxy group and a sulfonic acid group, more preferably a carboxy group. At least part of the anionic groups may be neutralized and in a salt state.

The weight-average molecular weight (Mw) of component (A) is determined by the ease of forming a polyion complex, the self-repairing property of the film formed by the aqueous composition, and the properties of the hair under high humidity conditions when used for hair treatment. From the viewpoint of improving the spread suppression effect, it is 120,000 or less, preferably 100,000 or less, more preferably 90,000 or less, still more preferably 80,000 or less, even more preferably 50,000 or less, and even more preferably is 40,000 or less, more preferably 30,000 or less, and even more preferably 20,000 or less. In addition, from the viewpoint of improving the film-forming ability, it is preferably 2,000 or more, more preferably 3,000 or more, still more preferably 4,000 or more, even more preferably 5,000 or more, and even more preferably 8,000 or more. is. The weight average molecular weight (Mw) of component (A) is 120,000 or less, preferably 2,000 or more and 100,000 or less, more preferably 2,000 or more and 90,000 or less, and still more preferably 3,000 or less. 000 or more and 80,000 or less, more preferably 3,000 or more and 50,000 or less, still more preferably 5,000 or more and 40,000 or less, still more preferably 8,000 or more and 30,000 or less, still more preferably 8,000 or more and 20,000 or less.
The weight average molecular weight of component (A) can be measured by gel permeation chromatography (GPC).

The cationic charge density of the component (A) is selected from the viewpoint of facilitating the formation of a polyion complex by interaction with the component (B), the self-repairing property of the film formed by the aqueous composition, and the hair treatment properties. From the viewpoint of improving the effect of suppressing hair spreading under high humidity conditions, it is 2.0 meq/g or more, preferably 2.5 meq/g or more, more preferably 3.0 meq/g or more, and still more preferably 3.5 meq/g. g or more, more preferably 4.0 meq/g or more. In addition, from the viewpoint of the self-repairing property of the film formed by the aqueous composition and the improvement of the effect of suppressing spread of hair under high humidity conditions when used for hair treatment, it is 24 meq/g or less, preferably 20 meq/g. g or less, more preferably 15 meq/g or less, still more preferably 12 meq/g or less, still more preferably 8.0 meq/g or less. The cationic charge density of component (A) is 2.0 meq/g or more and 24 meq/g or less, preferably 2.5 meq/g or more and 20 meq/g or less, more preferably 3.0 meq/g or more and 15 meq/g. Below, more preferably 3.5 meq/g or more and 15 meq/g or less, still more preferably 4.0 meq/g or more and 12 meq/g or less, still more preferably 4.0 meq/g or more and 8.0 meq/g or less.
The cationic charge density of component (A) can be calculated from (number of moles of cationic groups contained per 1 g of polymer)×1000 (meq/g). When at least part of the cationic groups in component (A) are neutralized salts, the number of moles of the cationic groups includes the number of moles of the cationic groups in the salt state. and
Two or more polymers may be used as the component (A), and the cationic charge density of the component (A) in this case is calculated by calculating the weighted average from the cationic charge density and the blending amount of each polymer. Desired.

As the component (A), both natural polymers such as cationic polysaccharides, cationized products thereof, and synthetic polymers can be used, but from the viewpoint of easy availability of low-molecular-weight polymers, synthetic polymers are preferred.
Specific examples of polymers used as component (A) include cationized polyvinyl alcohol, polyethyleneimine, quaternary dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternary ammonium salt polymer, and methacrylamide. Propyltrimethylammonium salt polymer, methacryloylethyltrimethylammonium salt polymer, vinylimidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16), vinylpyrrolidone/alkylamino (meth)acrylate copolymer, vinylpyrrolidone/alkylamino (meth)acrylate/vinylcaprolactam copolymer, alkylacrylamide/(meth)acrylate/alkylaminoalkylacrylamide/polyethylene glycol (meth)acrylate copolymer, adipic acid/dimethylaminohydroxypropylethylenetriamine copolymer, and the like. , one or more of these can be used.

Among the above, the quaternary dialkylaminoalkyl (meth)acrylate polymer includes vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate diethyl sulfate copolymer (polyquaternium-11), N,N- dimethylaminoethyl methacrylate diethyl sulfate/N,N-dimethylacrylamide/polyethylene glycol dimethacrylate copolymer (polyquaternium-52) and the like.
Examples of diallyl quaternary ammonium salt polymers include dimethyldiallylammonium chloride polymer (polyquaternium-6), dimethyldiallylammonium chloride/acrylic acid copolymer (polyquaternium-22), diallyldimethylammonium chloride/acrylamide copolymer ( polyquaternium-7), acrylamide/acrylic acid/dimethyldiallylammonium chloride copolymer (polyquaternium-39), and the like.

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

Component (A) can be used singly or in combination of two or more. Among the above, from the viewpoint of the ease of forming a polyion complex, the self-repairing property of the film formed by the aqueous composition, and the effect of improving the effect of suppressing the spread of hair under high humidity conditions when used for hair treatment, (A) is preferably a polymer having at least cationic groups.
Component (A) is more preferably polyethyleneimine, from the viewpoints of self-repairing properties of the film formed by the aqueous composition and improvement of the effect of suppressing hair spreading under high humidity conditions when used for hair treatment. Quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamidopropyltrimethylammonium salt polymer, methacryloylethyltrimethylammonium salt polymer, and vinylimidazolium trichloride. One or more selected from the group consisting of vinylpyrrolidone copolymer (polyquaternium-16), more preferably polyethyleneimine, diallyl quaternary ammonium salt polymer, methacrylamidopropyltrimethylammonium salt polymer, and vinylimidazolium One or more selected from the group consisting of trichloride-vinylpyrrolidone copolymer (polyquaternium-16), more preferably polyethyleneimine, dimethyldiallylammonium chloride polymer (polyquaternium-6), and vinylimidazolium trichloride-vinyl One or more selected from the group consisting of pyrrolidone copolymers (polyquaternium-16).

Commercially available polymers can also be used as component (A). As a specific example thereof, Lubrizol Advanced Materials, Inc. "Merquat 106" (dimethyldiallylammonium chloride polymer; polyquaternium-6, Mw: 15,000, cationic charge density: 6.2 meq / g), "Merquat 740" (diallyldimethylammonium chloride-acrylamide copolymer: Polyquaternium-7, Mw: 120,000, cationic charge density: 2.59 meq / g), BASF Japan Co., Ltd. "Rubicut FC 550" (Vinylimidazolium trichloride-vinylpyrrolidone copolymer; Polyquaternium-16, Cationic charge density: 3.91 meq/g, Mw: 80,000), "Luviquat Excellnce" (vinylimidazolium trichloride/vinylpyrrolidone copolymer; Polyquaternium-16, Mw: 40,000, cationic charge density: 6. 7 meq/g), "Luviquat FC 370" (vinylimidazolium trichloride/vinylpyrrolidone copolymer; polyquaternium-16, cationic charge density: 2.48 meq/g, Mw: 100,000, and the like.

(Component (B): anionic polymer)
Component (B) is a polymer capable of forming a polyion complex through interaction with component (A). As used herein, the term "anionic polymer" means a polymer having anionic groups and substantially no cationic or amphoteric groups. "Substantially free of cationic groups and amphoteric groups" means that the molar amount of cationic groups and amphoteric groups to anionic groups is preferably 0.1% or less.

The anionic group possessed by the 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 the component (A), and availability. from the viewpoint of, more preferably a carboxy group. In component (B), at least part of the anionic groups may be neutralized to form a salt.

The weight-average molecular weight (Mw) of the component (B) is determined from the viewpoint of the self-repairing property of the film formed by the aqueous composition and the improvement of the effect of suppressing the spread of hair under high humidity conditions when used for hair treatment. It is 10,000 or less, preferably 9,000 or less, more preferably 8,000 or less, still more preferably 6,000 or less. From the viewpoint of improving the film-forming ability, it is preferably 1,000 or more, more preferably 2,000 or more, and still more preferably 3,000 or more. The weight average molecular weight (Mw) of component (B) is 10,000 or less, preferably 1,000 or more and 9,000 or less, more preferably 2,000 or more and 8,000 or less, and still more preferably 3,000 or less. 000 or more and 6,000 or less.
The weight average molecular weight of component (B) can be measured by gel permeation chromatography (GPC).

The anionic charge density of the component (B) is considered to facilitate the formation of a polyion complex through interaction with the component (A), the self-repairing properties of the film formed by the aqueous composition, and the hair treatment properties. It is 8.0 meq/g or more, preferably 9.0 meq/g or more, from the viewpoint of improving the effect of suppressing hair spreading under high humidity conditions, and the self-healing property of the film formed by the aqueous composition, and From the viewpoint of improving the effect of suppressing spread of hair under high humidity conditions when used for hair treatment, it is preferably 24 meq/g or less, more preferably 20 meq/g or less, and still more preferably 15 meq/g or less. The anion charge density of component (B) is 8.0 meq/g or more, preferably 8.0 meq/g or more and 24 meq/g or less, more preferably 9.0 meq/g or more and 20 meq/g or less, and still more preferably is 9.0 meq/g or more and 15 meq/g or less.
The anionic charge density of component (B) can be calculated from (number of moles of anionic groups contained per 1 g of polymer)×1000 (meq/g). When at least part of the anionic groups in component (B) are neutralized salts, the number of moles of the anionic groups includes the number of moles of the anionic groups in the salt state. and
Two or more polymers may be used as the component (B), and the anion charge density of the component (B) in this case is determined by calculating a weighted average from the anion charge density of each polymer and the blending amount. .

As the component (B), both natural polymers such as anionic polysaccharides or anionized products thereof, and synthetic polymers can be used, but from the viewpoint of easy availability of low-molecular-weight polymers, synthetic polymers are preferred.
Examples of polymers having a carboxyl group that are suitably used as component (B) include carboxyvinyl polymers, poly(meth)acrylic acid, (meth)acrylic acid copolymers, polymaleic acid, and maleic acid/diisobutylene copolymers. , maleic acid/styrene copolymers, benzoic acid-formaldehyde condensates, benzoic acid/phenol/formaldehyde condensates, or salts thereof. Here, "(meth)acrylic acid" means acrylic acid or methacrylic acid.

Among the above, (meth)acrylic acid copolymers include (meth)acrylic acid/maleic acid copolymers, (meth)acrylic acid/itaconic acid copolymers, (meth)acrylic acid/fumaric acid copolymers, Coalescence, (meth)acrylic acid/vinyl acetate copolymer, (meth)acrylic acid/2-hydroxyethyl methacrylate copolymer, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, acrylic acid/acrylic acid alkyl ester/(N-alkyl)acrylamide copolymer, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, (acrylic acid/diacetone acrylamide) copolymer AMP, (acrylic acid/acrylic acid alkyl ester / diacetone acrylamide) copolymer AMP, (meth)acrylic acid / acrylic acid alkyl ester / polyvinylpyrrolidone copolymer, 2-ethylhexyl acrylate/methyl acrylate/acrylic acid/glycidyl methacrylate copolymer, or salts thereof mentioned.

Examples of the (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer include (meth)acrylic acid such as (acrylic acid/octyl acrylate) copolymer and (acrylic acid/stearyl acrylate) copolymer. A copolymer of an acid and a (meth)acrylic acid alkyl ester having an alkyl group having 1 to 24 carbon atoms, preferably 8 to 22 carbon atoms, may be mentioned.

Component (B) can be used singly or in combination of two or more.
From the viewpoint of ease of forming a polyion complex, self-healing properties of the film formed by the aqueous composition, and improvement in the effect of suppressing hair spreading under high humidity conditions when used for hair treatment, the component (B) is , preferably a polymer having a carboxy group, more preferably one or more selected from the group consisting of poly(meth)acrylic acid, (meth)acrylic acid copolymer, polymaleic acid, and salts thereof, more preferably is one or more selected from the group consisting of polyacrylic acid, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, polymaleic acid, and salts thereof, more preferably polyacrylic acid, polymaleic acid, and one or more selected from the group consisting of salts thereof.

(Component (C): Surfactant)
The composition of the present invention contains less than 1% by mass of (C) surfactant. Since the content of the component (C) in the composition is small, the formation of the polyion complex by the component (A) and the component (B) is less likely to be inhibited by the component (C), and the film formed by the aqueous composition. It is possible to further improve the self-restoring property of hair treatment and the effect of suppressing hair spreading under high humidity conditions when used for hair treatment.
Examples of the surfactant include ionic surfactants such as cationic surfactants, anionic surfactants and amphoteric surfactants; and nonionic surfactants. When using component (C), one or more of these can be used.
The content of component (C) in the aqueous composition means the total amount of the above surfactants in the aqueous composition.

Cationic surfactants include (i) alkyltrimethylammonium salts, (ii) alkoxyalkyltrimethylammonium salts, (iii) dialkyldimethylammonium salts, (iv) alkylamidoalkyltrimethylammonium salts, (v) alkyldimethylamines and One or more selected from the group consisting of salts thereof, (vi) alkoxyalkyldimethylamines and salts thereof, and (vii) alkylamidoalkyldimethylamines and salts thereof.

Anionic surfactants include alkyl benzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl sulfonates, α-olefin sulfonates, saturated or unsaturated One or more selected from the group consisting of fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acids, phosphoric acid mono- or diesters, and sulfosuccinic acid esters.

Amphoteric surfactants include one or more selected from the group consisting of imidazoline betaine, alkyldimethylaminoacetic acid betaine, fatty acid amidopropyl betaine, and sulfobetaine.

Nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbit fatty acid esters, polyoxyalkylene fatty acid esters, alkyl glucosides, alkyl glyceryl ethers, higher fatty acid One or more selected from the group consisting of sugar esters, polyglycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, alkylsaccharides, alkylamine oxides, and alkylamidoamine oxides.

(water)
Since the composition of the present invention is an aqueous composition, it preferably contains water. As water, deionized water or distilled water is preferred. In addition, tap water, underground 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 the stability of the aqueous composition, the self-healing property of the formed film, and the spread of the hair under high humidity conditions when used for hair treatment. From the viewpoint of improving the inhibitory effect, the following is preferable.

The content of the component (A) in the aqueous composition is determined from the viewpoint of ease of formation of the polyion complex, the self-repairing property of the formed film, and the spread of the hair under high humidity conditions when used for hair treatment. From the viewpoint of improving the suppression effect, it is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and even more preferably is 0.2% by mass or more. Also, from the viewpoint of the stability of the aqueous composition, the It is below. 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, still more preferably 0.05% by mass or more and 2.0% by mass or less, more preferably 0.1% by mass or more and 1.5% by mass or less, and even more preferably 0.2% by mass or more and 1.5% by mass or less.

The content of the component (B) in the aqueous composition is determined from the viewpoint of ease of formation of the polyion complex, the self-healing property of the formed film, and the spread of the hair under high humidity conditions when used for hair treatment. From the viewpoint of improving the inhibitory effect, it is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more. Also, from the viewpoint of the stability of the aqueous composition, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, even more preferably 1.5% by mass or less, and even more preferably 1.0% by mass. 0.8% by mass or less, and more preferably 0.8% by mass or less. The content of component (B) 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 2.0% by mass or less, and still more preferably 0.05% by mass or more and 1.5% by mass or less, more preferably 0.1% by mass or more and 1.0% by mass or less, and even more preferably 0.1% by mass or more and 0.8% by mass or less.

The total content of component (A) and component (B) in the aqueous composition improves the self-repairing property of the formed film and the effect of suppressing hair spreading under high humidity conditions when used for hair treatment. From the viewpoint, it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more. From the viewpoint of the stability of the aqueous composition, the content is preferably 20% by mass or less, more preferably 10% by mass or less, even more preferably 5.0% by mass or less, and even more preferably 2.0% by mass or less. The total content of component (A) and component (B) in the aqueous composition is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.05% by mass or more and 10% by mass or less, and further It is preferably 0.1% by mass or more and 5.0% by mass or less, and more preferably 0.2% 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 depends on the ease of formation of the polyion complex, the self-healing property of the formed film, and the high humidity conditions when used for hair treatment. From the viewpoint of improving the effect of suppressing the spread of hair under the hair, the ratio of the number of moles of cationic charges in component (A) and the number of moles of anionic charges in component (B) is preferably 5/95 to 95/5, and more. It is preferably 10/90 to 90/10, more preferably 20/80 to 80/20, and from the viewpoint of improving the adsorption of the polyion complex to the keratin substance surface, more preferably 40/60 to 70/30, More preferably 40/60 to 60/40, still more preferably 45/55 to 55/45.

In addition, the content ratio of the component (A) and the component (B) in the aqueous composition is determined by the ease of formation of the polyion complex, the self-repairing property of the film formed by the aqueous composition, and the use for hair treatment. From the viewpoint of improving the effect of suppressing hair spreading under high humidity conditions when worn, the mass ratio is preferably 1/0.05 to 1/5, more preferably 1/0.1 to 1/3, and still more preferably. The amount is 1/0.2 to 1/1, more preferably 1/0.2 to 1/0.6, and even more preferably 1/0.4 to 1/0.5.

The content of the component (C) in the aqueous composition is determined by the ease of forming a polyion complex, the self-repairing property of the film formed by the aqueous composition, and the hair under high humidity conditions when used for hair treatment. From the viewpoint of improving the effect of suppressing the spread of the .1% by mass or less, and more preferably 0% by mass.

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 the aqueous composition and the stability of the composition. , and more preferably 90% by mass or more. The water content in the aqueous composition may be the balance of components (A)-(C).

In addition, the composition of the present invention may contain, as optional components, preservatives, pH adjusters (acids, bases, or salts thereof), aqueous media other than water, and the like.

(pH)
In the aqueous composition, in particular, from the viewpoint of facilitating the formation of a polyion complex when using an amphoteric polymer as the component (A), and from the viewpoint of safety when used on the body, the pH of the aqueous composition at 25 ° C. is preferably 3.5 or more, more preferably 4.0 or more, and preferably 7.5 or less.
The pH of the aqueous composition at 25°C can be measured 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 self-repairing property of the formed film, and the effect of suppressing the spread of hair under high humidity conditions when used for hair treatment. and production efficiency, it is preferable to prepare an aqueous solution of component (A) and an aqueous solution of component (B), and then to mix these aqueous solutions. By including the step of mixing the aqueous solution of component (A) and the aqueous solution of component (B), the polyion complex can be efficiently formed without being inhibited by other components.

When a pH adjuster is blended, an aqueous solution of component (A) and an aqueous solution of component (B) are prepared, respectively, and the pH adjuster is added to each aqueous solution to adjust the pH to a desired value. Mixing is preferred.

Further, when using a surfactant as component (C), an aqueous solution of component (A) and an aqueous solution of component (B) are prepared, respectively, and then any one having the same charge as the surfactant It is preferable to mix both aqueous solutions after adding component (C) to the aqueous solution of the polymer.

The mixing conditions for mixing the aqueous solution of component (A) and the aqueous solution of component (B) are not particularly limited, and the mixing is usually carried out at 5 to 60° C. for 0.1 to 5 hours using a known stirring device. can be done.

[Skin cosmetic composition, hair cosmetic composition]
The present invention further provides a skin cosmetic composition containing the aqueous body composition and a hair cosmetic composition containing the aqueous body composition.
The body-use aqueous composition can form a film having excellent self-healing properties, and can impart moisture resistance to the object to be treated. Therefore, by applying a skin cosmetic composition containing the aqueous composition to the skin, for example, the water vapor barrier effect of the skin can be enhanced. In addition, when a hair cosmetic composition containing the aqueous composition is used for hair treatment, it is possible to suppress spreading of the hair under high humidity conditions. According to the skin cosmetic composition or hair cosmetic composition containing the aqueous composition for the body, it is possible to form a film with excellent self-repairing properties on the surface of the object to be treated, so that the load during daily life such as friction was applied. However, the film self-repairs and the treatment effect can be maintained.

The body aqueous composition may be used as a skin cosmetic composition or hair cosmetic composition as it is. It is also possible to use the aqueous composition as a premix for skin cosmetic compositions or hair cosmetic compositions. For example, a skin cosmetic composition or hair cosmetic composition can be prepared by blending additional components into the aqueous composition.
Since the component (A) and the component (B) are stably present in the aqueous composition in a state of forming a polyion complex, the polyion complex is unlikely to be destroyed even when an additional component is blended. Therefore, even when used as a skin cosmetic composition or a hair cosmetic composition, it is believed that the self-repairing properties of the film formed, the effect of imparting moisture resistance, and the durability thereof can be maintained.

In addition, the content of the aqueous body composition in the skin cosmetic composition or in the hair cosmetic composition is the amount of component (A) and component (B) in the skin cosmetic composition or hair cosmetic composition. The content should preferably be within the following range.

The content of component (A) in the skin cosmetic composition or in the hair cosmetic composition is preferably 0.001 from the viewpoint of the self-repairing property of the formed film, the effect of imparting moisture resistance, and the improvement of its sustainability. % 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 the stability of the composition, and from the viewpoint of exhibiting the effect when adding additional components, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and still more preferably. is 1.5% by mass or less. The content of component (A) in the skin cosmetic composition or in the hair 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. 0 mass % or less, more preferably 0.01 mass % or more and 1.5 mass % or less, and even more preferably 0.05 mass % or more and 1.5 mass % or less.

The content of component (B) in the skin cosmetic composition or in the hair cosmetic composition is preferably 0.001 from the viewpoint of the self-repairing property of the formed film, the effect of imparting moisture resistance, and the improvement of its sustainability. % 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 0.02% by mass or more. In addition, from the viewpoint of the stability of the composition, and from the viewpoint of exhibiting the effect when adding additional components, it is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and still more preferably. is 1.0% by mass or less, more preferably 0.7% by mass or less. The content of component (B) in the skin cosmetic composition or in the hair 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. 0 mass % or less, more preferably 0.01 mass % or more and 1.0 mass % or less, and even more preferably 0.02 mass % or more and 0.7 mass % or less.

The total content of component (A) and component (B) in the skin cosmetic composition or in the hair cosmetic composition is determined from the viewpoint of the self-repairing property of the formed film, the effect of imparting moisture resistance, and the improvement of its sustainability. , preferably 0.002% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, and even more preferably 0.05% by mass or more. In addition, from the viewpoint of the stability of the composition, and from the viewpoint of exhibiting the effect when adding additional components, it is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and still 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 skin cosmetic composition or hair cosmetic composition is preferably 0.002% by mass or more and 5.0% by mass or less, more preferably 0% by mass or more. .01% by mass or more and 4.0% by mass or less, more preferably 0.02% by mass or more and 4.0% by mass or less, still more preferably 0.05% by mass or more and 2.0% by mass or less, still more preferably 0 05% by mass or more and 1.5% by mass or less.

Additional components blended in the skin cosmetic composition or hair cosmetic composition include components normally blended in the skin cosmetic composition or hair cosmetic composition, such as surfactants, higher alcohols, oils, Organic or inorganic acid, nonionic polymer, aqueous medium, pH adjuster, texture improver, coloring agent, antioxidant, anti-dandruff agent, vitamin agent, bactericide, anti-inflammatory agent, preservative, chelating agent, moisturizing agent agents, pearl agents, ceramides, fragrances, plant extracts, ultraviolet absorbers, and the like.

A skin cosmetic composition or hair cosmetic composition containing an aqueous composition may be in the form of an emulsion composition. The emulsified composition is preferably an oil-in-water emulsified composition from the viewpoint of stability of the composition and improvement of feel during use.
The method for producing the skin cosmetic composition or hair cosmetic composition in the form of an emulsified composition is not particularly limited. For example, a method of mixing the aqueous composition and an oil phase component containing an emulsion-forming component, and then, if necessary, adding and mixing an aqueous phase component other than the aqueous composition and/or other oil phase components. a method of mixing an oil phase component containing an emulsion-forming component with an aqueous phase component other than the aqueous composition, and then adding and mixing the aqueous composition; From the viewpoint of producing a highly stable emulsified composition, the self-repairing property of the formed film, and the effect of suppressing the spread of hair under high humidity conditions when used for hair treatment and improving its sustainability, A method of mixing the aqueous composition and an oil phase component containing an emulsion-forming component, and then, if necessary, adding and mixing an aqueous phase component other than the aqueous composition and/or other oil phase components, It is preferred to produce emulsion compositions.
As used herein, the term "aqueous phase component" means a component that constitutes the aqueous phase of the emulsion composition, and the term "oil phase component" means a component that constitutes the oil phase of the emulsified composition.
The term "oil phase component containing an emulsion-forming component" as used herein means an oily component for forming an emulsion contained in the emulsion composition, and the emulsion-forming component is preferably an ionic Examples include surfactants and amphiphilic substances having hydrophobic groups. Examples of ionic surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants, and examples of amphiphilic substances having a hydrophobic group include higher alcohols. Examples of the "aqueous phase component other than the aqueous composition" include organic acids or inorganic acids, aqueous media, and the like, and examples of the "oil phase component other than the emulsion-forming component" include oils. Furthermore, other components exemplified as "additional components" can be appropriately used in the emulsified composition.

Examples of product forms of the skin cosmetic composition include body soap, facial cleanser, bath agent, deodorant formulation, makeup cosmetic, sunscreen, makeup base, milky lotion, beauty essence, cream and the like.

The product forms of hair cosmetic compositions include hair shampoos, hair rinses, hair conditioners, hair treatments (including leave-in type), hair styling agents, hair coloring agents, permanent agents, and the like. Among these, hair conditioners, hair treatments, and hair styling agents are preferred from the viewpoint of effectiveness of the effects of the present invention.

The present invention discloses the following with respect to the above-described embodiments.
<1>
(A) one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, having a weight average molecular weight of 120,000 or less and a cationic charge density of 2.0 meq/g or more and 24 meq/g or less; (B) contains an anionic polymer having a weight average molecular weight of 10,000 or less and an anion charge density of 8.0 meq/g or more, and (C) a surfactant content of less than 1% by mass. Aqueous body composition.
<2>
Component (A) preferably has a weight average molecular weight of 2,000 or more and 100,000 or less, more preferably 2,000 or more and 90,000 or less, still more preferably 3,000 or more and 80,000 or less, still more preferably 3 <1> The aqueous body composition according to 1>.
<3>
Cationic charge density of component (A) is preferably 2.5 meq/g or more and 20 meq/g or less, more preferably 3.0 meq/g or more and 15 meq/g or less, still more preferably 3.5 meq/g or more and 15 meq/g or less. , More preferably 4.0 meq / g or more and 12 meq / g or less, still more preferably 4.0 meq / g or more and 8.0 meq / g or less, <1> or <2> The aqueous composition for the body according to .
<4>
Component (A) is cationized polyvinyl alcohol, polyethyleneimine, quaternary dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternary ammonium salt polymer, methacrylamidopropyltrimethylammonium salt polymer, methacryloyl Ethyltrimethylammonium salt polymer, vinylimidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16), vinylpyrrolidone/alkylamino (meth)acrylate copolymer, vinylpyrrolidone/alkylamino (meth)acrylate/vinylcaprolactam copolymer One or more selected from the group consisting of polymers, alkylacrylamide/(meth)acrylate/alkylaminoalkylacrylamide/polyethylene glycol (meth)acrylate copolymers, and adipic acid/dimethylaminohydroxypropylethylenetriamine copolymers, preferably contains polyethyleneimine, quaternized dialkylaminoalkyl (meth)acrylate polymer, diallyl quaternized ammonium salt polymer, methacrylamidopropyltrimethylammonium salt polymer, methacryloylethyltrimethylammonium salt polymer, and vinyl One or more selected from the group consisting of imidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16), more preferably polyethyleneimine, diallyl quaternized ammonium salt polymer, methacrylamidopropyltrimethylammonium salt polymer , and one or more selected from the group consisting of vinylimidazolium trichloride/vinylpyrrolidone copolymer (polyquaternium-16), more preferably polyethyleneimine, dimethyldiallylammonium chloride polymer (polyquaternium-6), and vinylimidazo The aqueous composition for the body according to any one of <1> to <3>, which is at least one selected from the group consisting of lium trichloride/vinylpyrrolidone copolymer (polyquaternium-16).
<5>
The weight average molecular weight of component (B) is preferably 1,000 or more and 9,000 or less, more preferably 2,000 or more and 8,000 or less, and still more preferably 3,000 or more and 6,000 or less. <1> The body aqueous composition according to any one of <4>.
<6>
Anion charge density of component (B) is preferably 8.0 meq/g or more and 24 meq/g or less, more preferably 9.0 meq/g or more and 20 meq/g or less, still more preferably 9.0 meq/g or more and 15 meq/g or less. The body aqueous composition according to any one of <1> to <5>.
<7>
Component (B) is a polymer having a carboxy group, preferably carboxyvinyl polymer, poly(meth)acrylic acid, (meth)acrylic acid-based copolymer, polymaleic acid, maleic acid/diisobutylene copolymer, maleic acid/styrene One or more selected from the group consisting of copolymers, benzoic acid formaldehyde condensates, benzoic acid/phenol/formaldehyde condensates and salts thereof, more preferably poly(meth)acrylic acid, (meth)acrylic acid copolymer One or more selected from the group consisting of coalescence, polymaleic acid, and salts thereof, more preferably polyacrylic acid, (meth)acrylic acid/(meth)acrylic acid alkyl ester copolymer, polymaleic acid, and salts thereof Any one of <1> to <6>, which is one or more selected from the group consisting of, more preferably one or more selected from the group consisting of polyacrylic acid, polymaleic acid, and salts thereof body aqueous composition.
<8>
The content of 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, still more preferably 0.05% by mass or more and 2.0% by mass or less, more preferably 0.1% by mass or more and 1.5% by mass or less, still more preferably 0.2% by mass or more and 1.5% by mass or less, <1> to <7>, the aqueous composition for the body according to any one of items 1> to <7>.
<9>
The content of component (B) 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 2.0% by mass or less, and even more preferably 0.05% by mass or more and 1.5% by mass or less, more preferably 0.1% by mass or more and 1.0% by mass or less, still more preferably 0.1% by mass or more and 0.8% by mass or less, <1> to <8>, the aqueous composition for the body according to any one of items 1> to <8>.
<10>
The total content of component (A) and component (B) in the body aqueous composition is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.05% by mass or more and 10% by mass or less, and further Body use according to any one of <1> to <9>, preferably 0.1% by mass or more and 5.0% by mass or less, more preferably 0.2% by mass or more and 2.0% by mass or less Aqueous composition.

<11>
The ratio of the number of moles of cationic charges of component (A) to the number of moles of anionic charges of component (B) in the aqueous personal composition is preferably 5/95 to 95/5, more preferably 10/90. to 90/10, more preferably 20/80 to 80/20, even more preferably 40/60 to 70/30, even more preferably 40/60 to 60/40, still more preferably 45/55 to 55/ 45, the body aqueous composition according to any one of <1> to <10>.
<12>
The content ratio of component (A) and component (B) in the body aqueous composition is preferably 1/0.05 to 1/5, more preferably 1/0.1 to 1/ as a mass ratio. 3, more preferably 1/0.2 to 1/1, even more preferably 1/0.2 to 1/0.6, still more preferably 1/0.4 to 1/0.5, <1> to <11>, the aqueous composition for the body according to any one of items 1> to <11>.
<13>
The content of component (C) in the body aqueous composition is preferably 0.8% by mass or less, more preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, still more preferably 0 The body aqueous composition according to any one of <1> to <12>, which is 1% by mass or less, and more preferably 0% by mass.
<14>
The water content 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, and even more preferably 90% by mass or more, <1> The body aqueous composition according to any one of <13>.
<15>
Any of <1> to <14>, wherein the pH of the body aqueous composition at 25° C. is preferably 3.5 or higher, more preferably 4.0 or higher, and preferably 7.5 or lower 2. The body aqueous composition according to 1.
<16>
A skin cosmetic composition comprising the body aqueous composition according to any one of <1> to <15>.
<17>
A hair cosmetic composition comprising the body aqueous composition according to any one of <1> to <15>.
<18>
The content of component (A) 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, still more preferably 0.01% by mass or more and 1 The skin cosmetic composition according to <16> or the hair cosmetic composition according to <17>, which is 0.5% by mass or less, more preferably 0.05% by mass or more and 1.5% by mass or less.
<19>
The content of component (B) 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, still more preferably 0.01% by mass or more and 1 The skin cosmetic composition according to <16> or the hair cosmetic composition according to <17>, which is 0.0% by mass or less, more preferably 0.02% by mass or more and 0.7% by mass or less.
<20>
The total content of component (A) and component (B) is preferably 0.002% 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, still more preferably 0 <16 > or the hair cosmetic composition according to <17>.

<21>
The skin cosmetic composition according to <16> or the hair cosmetic composition according to <17>, which is in the form of an emulsion composition, preferably an oil-in-water emulsion composition.
<22>
The skin cosmetic composition according to <16>, which is a body soap, facial cleanser, bath agent, deodorant preparation, makeup cosmetic, sunscreen, makeup base, milky lotion, serum, or cream.
<23>
The hair cosmetic composition according to <17>, which is a hair shampoo, hair rinse, hair conditioner, hair treatment, hair styling agent, hair color or permanent agent, preferably a hair conditioner, hair treatment or hair styling agent.

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to the scope of the examples. In addition, each measurement and evaluation in the examples were performed by the following methods.

(pH measurement)
Using a pH meter (manufactured by Horiba, Ltd., F-51), the pH of the aqueous composition of each example was measured at 25°C.

Example 1 (Preparation and Evaluation of Aqueous Composition)
(Preparation of aqueous composition)
Using the components listed in Table 1, an aqueous composition was prepared by the following procedure.
A 1% by mass aqueous solution of polyethyleneimine (weight average molecular weight: 6,000, cationic charge density: 23.2 meq/g), which is component (A), was prepared and adjusted to pH 7±0.2 using an aqueous hydrochloric acid solution. Separately, a 1% by mass aqueous solution of polyacrylic acid (weight average molecular weight: 5,000, anion charge density: 13.9 meq/g), which is the component (B), was prepared and adjusted to pH 7±0.0 using an aqueous sodium hydroxide solution. adjusted to 2.
An aqueous composition was prepared by mixing each aqueous solution of the component (A) and the component (B) so that the mass ratio of the effective components of the component (A) and the component (B) was the value shown in Table 1. .

(Preparation of polyion complex film)
The above aqueous composition (40 mL in total) was centrifuged at 10000 rpm for 15 minutes using a centrifuge ("CR20GIII" manufactured by HITACHI). After that, the supernatant solution was removed, and the volume was made up to 40 mL with 4 degree hard water. This was applied to a vortex mixer ("TTM-1" manufactured by SHIBATA) to wash the polyion complex consisting of component (A) and component (B). The above washing operation was repeated three times.
After washing, the recovered polyion complex phase was sandwiched between acrylic plates so as to have a thickness of 1 mm, placed in a desiccator and vacuum dried to prepare a polyion complex film.

(Self-healing time of film)
The above polyion complex film was conditioned for 24 hours or more in an environment of 25° C. and 50% RH in a small environmental tester (“SH-262” manufactured by Espec). Next, the film was scratched at three locations with a plastic cutter (“PC-L” manufactured by OLFA), and the state of the initial scratches was observed with a digital microscope (manufactured by Keyence Corporation “VHX-6000”, swing head zoom lens: VH -ZST). This was allowed to stand in an environment of 25° C. and RH 70%, and the state of the scratches was observed with a digital microscope every 30 minutes up to 480 minutes to confirm the time for the scratches to be repaired.
In addition, the criteria for self-healing time in the table are as follows. A shorter self-healing time means a higher self-healing property.
A: 30 minutes or less B: More than 30 minutes and 120 minutes or less C: More than 120 minutes and 180 minutes or less D: More than 180 minutes

(Effect of suppressing spread of hair)
A curling iron at 190° C. was applied to a Japanese curly hair tress with a length of 28 cm and a mass of 4 g for 10 seconds×4 times. As a load during daily life, 100 times of combing and 100 times of towel rubbing were repeated twice. The hair bundle was hung with the base of the hair bundle facing up, and the width of the hair bundle was measured at a point 18 cm from the base of the hair bundle. The hair bundle width (reference width) at this time was 4 cm.
Next, the aqueous composition was applied to the hair tress so that the bath ratio (mass of the aqueous composition/mass of the tress) was 1/1 for 1 minute, followed by rinsing with running water for 30 seconds. dried in a hair dryer for a minute. After applying a hair iron at 190° C. for 10 seconds×4 times, the hair was combed 100 times and rubbed with a towel 100 times each twice as a load during daily life. The treated hair tress was allowed to stand in a desiccator box at 25° C. and RH 85-95% for 30 minutes. The tress was hung with the root of the tress facing up, combed by hand, and then the tress width (x) (unit: cm) was measured at a point 18 cm from the root of the tress.
As a parameter indicating the effect of suppressing hair spreading, the value of hair bundle width (x)/reference width was calculated and shown in Table 1. The smaller this value, the more excellent the effect of suppressing the spread of hair. When a hair tress that was not treated with the aqueous composition was used, the above parameter value (hair tress width (x)/reference width) was 1.625.
In addition, the evaluation criteria for the effect of suppressing spread of hair in the table are as follows.
A: Less than 1.0 B: 1.0 or more and less than 1.2 C: 1.2 or more

Examples 2-11, Comparative Examples 1-5
An aqueous composition was prepared in the same manner as in Example 1, except that the types and amounts of each component used in the preparation of the aqueous composition were changed as shown in Tables 1 and 2, and various evaluations were performed. rice field. The results are shown in Tables 1-2.

Example 12 (Preparation and Evaluation of Aqueous Composition)
(Preparation of aqueous composition)
Using the ingredients listed in Table 1, an aqueous composition for hair treatment was prepared according to the following procedure.
A 1% by mass aqueous solution of component (A) "Merquat 106" (manufactured by Lubrizol Advanced Materials, Inc., weight average molecular weight: 15,000, cationic charge density: 6.2 meq / g) was prepared, and an aqueous hydrochloric acid solution was used. was adjusted to pH 7±0.2. Separately, a 1% by mass aqueous solution of polyacrylic acid (weight average molecular weight: 5,000, anionic charge density: 13.9 meq/g) was prepared as component (B).
Next, "Emal 270J" (manufactured by Kao Corporation, sodium polyoxyethylene (2) alkyl ether sulfate), which is component (C), is added to the aqueous solution of component (B) having the same charge as component (C). After that, the pH was adjusted to 7±0.2 using an aqueous sodium hydroxide solution.
The aqueous solution is mixed so that the ratio of active ingredients of component (A) and component (B) is the value shown in the table, and the total content of component (A) and component (B) is 1% by mass. A composition was prepared.
Various evaluations were performed in the same manner as in Example 1 using the obtained aqueous composition. Table 1 shows the results.

Example 13, Comparative Examples 6-7
An aqueous composition was prepared in the same manner as in Example 12, except that the types and amounts of each component used in the preparation of the aqueous composition were changed as shown in Tables 1 and 2, and various evaluations were performed. rice field. The results are shown in Tables 1-2.

The components listed in the table are as follows. Also, the blending amounts (% by mass) described in the table are effective amounts of each component.
<Component (A): Cationic polymer or amphoteric polymer>
*1 polyethyleneimine, manufactured by Junsei Chemical Co., Ltd., Mw: 6,000, cationic charge density: 23.2 meq/g
*2 Polyquaternium-6 (dimethyldiallylammonium chloride polymer), Lubrizol Advanced Materials, Inc. manufactured by "Merquat 106", Mw: 15,000, cationic charge density: 6.2 meq / g
* 3 Polyquaternium-16 (vinylimidazolium trichloride/vinylpyrrolidone copolymer), BASF Japan Co., Ltd. "Luviquat Excellence", Mw: 40,000, cationic charge density: 6.7 meq / g
* 4 Polyquaternium-16 (vinylimidazolium trichloride/vinylpyrrolidone copolymer), BASF Japan Co., Ltd. “Luviquat FC 550”, Mw: 80,000, cationic charge density: 3.91 meq / g
* 5 Polyquaternium-16 (vinylimidazolium trichloride/vinylpyrrolidone copolymer), BASF Japan Co., Ltd. “Luviquat FC 370”, Mw: 100,000, cationic charge density: 2.48 meq / g

<Component (A'): Cationic polymer or amphoteric polymer other than component (A)>
*6 Polyquaternium-22 (dimethyldiallylammonium chloride/acrylic acid copolymer liquid), Lubrizol Advanced Materials, Inc. "Merquat 295", Mw: 190,000, cationic charge density: 6.04 meq / g
*7 Polyquaternium-6 (dimethyldiallylammonium chloride polymer), Lubrizol Advanced Materials, Inc.; "Merquat 100", Mw: 150,000, cationic charge density: 6.2 meq / g

<Component (B): anionic polymer>
*8 Poly(maleic acid), Polysciences. Inc. made, Mw: 2,500, anion charge density: 17.53 meq/g
*9 Polyacrylic acid, manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd., Mw: 5,000, anion charge density: 13.9 meq/g
*10 Sodium poly(acrylate), manufactured by Sigma-Aldrich, Mw: 8,000, anion charge density: 10.63 meq/g

<Component (B'): Anionic polymer other than component (B)>
*11 Sodium polyaspartate, "AQUADEW SPA-30B" manufactured by Ajinomoto Healthy Supply Co., Ltd., Mw: 4,000, anion charge density: 7.3 meq/g
*12 Polyacrylic acid, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., Mw: 2.5 million, anion charge density: 13.9 meq/g
*13 Sodium poly(vinylsulfonate), manufactured by Alfa Aesar, 25% by mass aqueous solution, Mw: 5,000, anion charge density: 7.69 meq/g

<Component (C): Surfactant>
*14 Anionic surfactant "Emar 270J", manufactured by Kao Corporation, sodium polyoxyethylene (2) alkyl ether sulfate *15 Cationic surfactant "Cortamine 86W", manufactured by Kao Corporation, stearyltrimethylammonium chloride

As shown in Table 1, the film formed using the aqueous composition of this example has a high self-healing property. In addition, it can be seen that when the aqueous composition is applied to the hair, the spread of the hair under high humidity conditions can be suppressed.

According to the present invention, it is possible to form a film having excellent self-healing properties, and it is possible to impart moisture resistance and durability to an object to be treated. It is possible to provide an aqueous body composition that can suppress the spread of hair under high humidity conditions even after being subjected to friction such as.
The aqueous composition can be used as body compositions such as skin cosmetic compositions and hair cosmetic compositions. It is also possible to use the aqueous composition as a premix for skin cosmetic compositions or hair cosmetic compositions. For example, a skin cosmetic composition or hair cosmetic composition can be prepared by blending additional components into the aqueous composition.

Claims (8)

(A) one or more polymers selected from the group consisting of cationic polymers and amphoteric polymers, having a weight average molecular weight of 120,000 or less and a cationic charge density of 2.0 meq/g or more and 24 meq/g or less; (B) contains an anionic polymer having a weight average molecular weight of 10,000 or less and an anion charge density of 8.0 meq/g or more, and (C) a surfactant content of less than 1% by mass. Aqueous body composition. 2. The body aqueous composition according to claim 1, wherein said component (A) has a cationic charge density of 12 meq/g or less. The body aqueous composition according to claim 1 or 2, wherein the component (A) has a weight average molecular weight of 5,000 or more. The body aqueous composition according to any one of claims 1 to 3, wherein component (B) has an anionic charge density of 24 meq/g or less. Any one of claims 1 to 4, wherein the component (B) is one or more selected from the group consisting of poly(meth)acrylic acid, (meth)acrylic acid copolymer, polymaleic acid, and salts thereof. 2. The body aqueous composition according to item 1. A skin cosmetic composition comprising the body aqueous composition according to any one of claims 1 to 5. A hair cosmetic composition comprising the aqueous body composition according to any one of claims 1 to 5. The skin cosmetic composition according to claim 6, or the skin cosmetic composition according to claim 7, wherein the total content of the component (A) and the component (B) is 0.002% by mass or more and 5.0% by mass or less. Hair cosmetic composition.