JP6775479B2 - Skin cosmetics - Google Patents

Description

The present invention relates to skin cosmetics, particularly skin cosmetics containing powder.

Deodorant cosmetics are used as cosmetics to suppress the stickiness and odor of sebum and sweat and to give a refreshing feeling. Such deodorant cosmetics contain antiperspirant and bactericidal ingredients. As the antiperspirant component, various aluminum compounds having an astringent action, zinc paraphenol sulfonate and the like are used. Examples of cosmetics containing such antiperspirant components include powder solid cosmetics (Patent Document 1) in which powder is blended in addition to antiperspirant components and bactericidal components, silicone gel, and polyhydric alcohol fatty acid ester powder. , A deodorant stick containing a solidifying agent and a deodorant component (Patent Document 2), an antiperspirant deodorant composition containing an aluminum compound, a phenolic bactericide, an aldehyde fragrance, a chelating agent and water (Patent Document 3), etc. have been reported. Has been done.

JP-A-2010-77094 Japanese Unexamined Patent Publication No. 2015-3891 Japanese Unexamined Patent Publication No. 2016-11347

However, there is a problem that the conventional antiperspirant component cannot obtain a sufficient effect when a large amount of sweat is applied. For example, an antiperspirant component having an astringent action cannot suppress the generation of sweat during commuting or sports. In addition, the absorption of sweat by the water-absorbent powder cannot cope with a large amount of sweat during commuting.
Therefore, an object of the present invention is to provide a skin cosmetic that can cope with the generation of a large amount of sweat.

Therefore, as a result of various studies on skin cosmetics using water-absorbent powder, the present inventor has a specific surface area of 150 m ² / g or more and 1000 m ² / g or less, and has self-adhesive ability with water-absorbent powder. When used in combination with the crosslinked resin powder, the sweat absorbed in the water-absorbent powder quickly evaporates to quickly evaporate a large amount of sweat, and even when a large amount of sweat is generated, the water-absorbent powder becomes the skin. The present invention was completed by finding that it stays on the skin and does not disappear from the skin even by friction.

That is, the present invention contains the following component (A) and component (B), and the mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and 2.5 or less. It provides skin cosmetics.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbent powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less.

The present invention also provides a method for evaporating sweat, which comprises the step of applying the skin cosmetic to the skin.
The present invention also provides a method for forming a coating film in which the component (A) and the component (B) are combined on the surface of the skin including the step of applying the skin cosmetic to the skin.
Further, the present invention contains the following component (A) and component (B), and the mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and 2.5 or less. It provides an transpiration accelerator for water composed of substances.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbent powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less.

When the skin cosmetic of the present invention is applied to the skin, a coating film in which the component (A) and the component (B) are compounded is formed on the skin, and the specific surface area of the component (B) is 150 m ² / g or more and 1000 m. ^The sweat absorbed by the water-absorbent powder of ² / g or less quickly evaporates, and a large amount of sweat is rapidly evaporated, and even when a large amount of sweat is generated, the water-absorbent powder which is the component (B) becomes the skin. It stays on top and does not disappear from the skin due to rubbing. Therefore, the skin cosmetic of the present invention quickly absorbs and dries sweat even when a large amount of sweat is generated, and exhibits a sweat evaporating function for a long time without disappearing from the skin due to sweat or friction.

The component (A) used in the skin cosmetics of the present invention is a crosslinked resin powder having a self-adhesive ability. Due to the self-adhesive ability of the component (A), when applied to the skin at the same time as the component (B), a composite coating film of the component (A) and the component (B) is formed on the skin surface. The formed composite coating film absorbs sweat due to the excellent water absorption of the component (B), exhibits quick-drying sweat, and also exhibits excellent abrasion resistance.
The crosslinked resin powder having the self-adhesive ability of the component (A) includes a crosslinked (meth) acrylic acid ester resin powder and a silicone elastomer spherical shape from the viewpoint of water diffusivity, abrasion resistance, and water resistance of the coating film. One or more selected from powder and urethane resin powder is preferable, and crosslinked (meth) acrylic acid ester-based resin powder is more preferable. As used herein, the term "(meth) acrylic" is a concept that includes both acrylic and methacrylic.

The crosslinked (meth) acrylic acid ester-based resin powder is a crosslinked resin powder having at least a repeating unit derived from the (meth) acrylic acid ester monomer. Examples of such crosslinked (meth) acrylic acid ester-based resin powder include the resin powder described in JP-A-2006-2253311. Examples of the monomer other than the (meth) acrylic acid ester monomer include polymerizable vinyl group-containing monomers such as (meth) acrylic acid, styrene, and divinylbenzene.

As the (meth) acrylic acid ester monomer, a (meth) acrylic acid alkyl ester having an alkyl group having 1 to 18 carbon atoms is preferable from the viewpoint of self-adhesiveness. Specifically, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate. , (Meta) stearyl acrylate and the like. Among these, from the viewpoint of self-adhesiveness, alkyl (meth) acrylate having 4 to 18 carbon atoms of alkyl groups such as butyl (meth) acrylate, lauryl (meth) acrylate, and stearyl (meth) acrylate is used. Especially preferable. These may be used in combination of a plurality of types. The ratio of the (meth) acrylic acid ester monomer in all the monomer components (including the crosslinkable monomer described later; the same applies hereinafter) is 30 to 98% by mass from the viewpoint of the uniformity of the composite coating film. Preferably, 50 to 85% by mass is more preferable.

Examples of the monomer having a carboxyl group include (meth) acrylic acid, maleic acid, fumaric acid, crotonic acid, and itaconic acid. These may be used in combination of a plurality of types. The proportion of the monomer having a carboxyl group in all the monomer components is preferably 0.1 to 30% by mass, more preferably 1 to 10% by mass, from the viewpoint of water diffusivity of the coating film.

A part of the carboxyl groups contained in the crosslinked (meth) acrylic acid ester resin powder may be neutralized. The base for neutralization is preferably an inorganic base such as sodium hydroxide, potassium hydroxide or ammonia, but organic bases such as amines, alkanolamines and basic amino acids can also be used. The degree of neutralization is preferably 1 to 30%, particularly preferably 1 to 20%, from the viewpoint of water diffusivity of the coating film. Here, the degree of neutralization is the ratio of the number of moles of the added base to the number of moles of the carboxyl group of the monomer having a carboxyl group expressed as a percentage.

The monomer component preferably contains a crosslinkable monomer having two or more vinyl groups as a crosslinking agent. Examples of such crosslinkable monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, decaethylene glycol di (meth) acrylate, and pentadecaethylene glycol di (). Meta) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycerindi (meth) acrylate, (meth) Allyl acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, diethylene glycol di (meth) acrylate, caprolactone-modified dipentaerythritol hexa (meth) acrylate, caprolactone-modified hydroxypivalic acid ester neopentyl glycol (Meta) acrylic acid ester-based crosslinkable monomers such as di (meth) acrylate, polyester (meth) acrylate, urethane (meth) acrylate, and aromatic divinyl-based monomers such as divinylbenzene, divinylnaphthalene and derivatives thereof. Can be mentioned. These may be used alone or in combination of two or more. Among these crosslinkable monomers, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, 1,3-butylene glycol, from the viewpoint of the feel of a free-flowing coating film. (Poly) alkylene glycol di (meth) acrylates such as di (meth) acrylates, 1,4-butanediol di (meth) acrylates, 1,6-hexanediol di (meth) acrylates, caprolactone-modified dipentaerythritol hexa (meth) ) Acrylate, caprolactone-modified hydroxypivalic acid ester neopentyl glycol di (meth) acrylate, polyester (meth) acrylate are more preferable. These crosslinkable monomers are preferably used in an amount of 3 to 50% by mass with respect to all the monomer components.

As the monomer component, in addition to the above (meth) acrylic acid ester monomer, the monomer having a carboxyl group and the crosslinkable monomer, other monomers copolymerizable with these may be copolymerized. Good. Examples of other monomers include styrene, (meth) acrylonitrile, (meth) acrylamide, vinyl acetate, vinylpyrrolidone and the like.

The crosslinked resin powder contains, for example, the above-mentioned (meth) acrylic acid ester monomer, a monomer having a carboxyl group, and a monomer component containing a crosslinkable monomer, using a dispersant, a polymerization initiator, or the like. It can be obtained by polymerization by aqueous suspension polymerization, emulsion polymerization, seed polymerization, dispersion polymerization or the like. Of these, the aqueous suspension polymerization method is preferable from the viewpoint that it is easy to obtain a resin powder having a spherical shape and a uniform particle size.

Examples of the silicone elastomer spherical powder include crosslinked methylpolysiloxane. The crosslinked methylpolysiloxane is obtained by adding a small amount of methyltrimethoxysiloxane to dimethoxydimethylsiloxane and polymerizing it, and has a crosslinked structure with methyltrimethoxysiloxane inside. This product can be produced by emulsion polymerization, and specific examples thereof include the Trefil series (Trefil E506W, Trefil E505C, Trefil E506C, Trefil E505W, etc.) manufactured by Toray Dow Corning Silicone. .. In addition, these may be used alone or in combination, and those dispersed in various solvents and those premixed with other components can be used without any problem. Examples of these include Trefil E507 solution, BY29-129, BY29-122 and the like. In addition, X-52-1139K and X-52-1139G manufactured by Shin-Etsu Chemical Co., Ltd., which are silicone resin / rubber composite powders, can also be mentioned.

Examples of the urethane resin powder include a self-emulsifying type polyurethane dispersion and a core-shell type urethane acrylic dispersion having an acrylic resin as a core and urethane as a shell structure. The polyurethane dispersion is produced from a diisocyanate polymer and a diol monomer, and specific examples thereof include WBR-2101 manufactured by Taisei Fine Chemicals Co., Ltd. On the other hand, examples of the core-shell type urethane acrylic dispersion include WEM-200 manufactured by Taisei Fine Chemical Co., Ltd. and DAITOSOL U9-40 manufactured by Daito Kasei Co., Ltd.

The average particle size of the component (A) is preferably 0.09 μm or more, preferably 0, from the viewpoint of good abrasion resistance, water resistance, and excellent water absorption (water diffusivity) of the coating film formed on the skin. .2 μm or more is more preferable, 0.3 μm or more is further preferable, 20 μm or less is preferable, 10 μm or less is more preferable, 5 μm or less is further preferable, and 2.2 μm or less is further preferable. The specific range of the average particle size is preferably 0.09 to 20 μm, more preferably 0.2 to 10 μm, further preferably 0.3 to 5 μm, and even more preferably 0.3 to 2.2 μm.
In the present invention, the average particle size is the average particle size when the powder is monodispersed, and is the volume average particle size of the particle size measured by the static light scattering method.

The shape of the component (A) may be spherical, substantially spherical, granular or the like, and spherical or substantially spherical is preferable in terms of usability and sweat resistance of the coating film.

As the component (A), a crosslinked resin powder having a glass transition temperature (Tg) of 20 ° C. or lower is preferable from the viewpoint of having self-adhesive ability. The Tg is more preferably 0 ° C. or lower, and even more preferably −5 ° C. or lower. Here, the glass transition temperature is a temperature measured by differential scanning calorimetry (DSC). In the (meth) acrylic acid alkyl ester as the monomer component, the glass transition temperature (Tg) of the homopolymer is preferably 20 ° C. or lower, more preferably 0 ° C. or lower, still more preferably −5 ° C. or lower. Examples of such (meth) acrylic acid alkyl ester include butyl acrylate (Tg: −54 ° C.), SEC butyl acrylate (Tg: -22 ° C.), and 2-ethylhexyl acrylate (Tg: −70 ° C.). , 2-Ethylhexyl methacrylate (-10 ° C), octyl acrylate (Tg: -65 ° C), octyl methacrylate (Tg: -20 ° C), nonyl acrylate (Tg: -58 ° C), dodecyl acrylate (Tg) : -3 ° C), dodecyl methacrylate (Tg: -65 ° C) and the like.

The component (B) used in the skin cosmetics of the present invention is a spherical water-absorbent powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less. In the present invention, the component (B) is water-absorbent and has a specific surface area of 150 m ² / g or more and 1000 m ² / g or less. Therefore, the component (A) and the component (B) formed on the skin by absorbing a large amount of sweat. Water is rapidly diffused into the composite coating film of B) to promote transpiration. It is confirmed by the oil absorption amount by JIS K 5101-13-1 <general test method for measuring the oil absorption amount of pigments and extender pigments> that the water absorption and the specific surface area are 150 m ² / g or more and 1000 m ² / g or less. it can. Powders having an average oil absorption of 90 mL / 100 g or more, further 140 mL / 100 g or more, further 150 mL / 100 g or more, and further 300 mL / 100 g or more are preferable. The upper limit of the oil absorption amount is about 500 mL / 100 g.
The specific surface area is the BET specific surface area measured in accordance with the gas adsorption method (JIS Z 8830: 2001 method for measuring the specific surface area of powder (solid) by gas adsorption).
The specific surface area of the component (B) is preferably 200 m ² / g or more, more preferably 250 m ² / g or more, preferably 900 m ² / g or less, and 800 m ² / g or less from the viewpoint of water diffusion and transpiration. Is more preferable, and 700 m ² / g or less is further preferable.
Further, the shape of the component (B) is preferably spherical in terms of usability and sweat resistance of the coating film.

Examples of the powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less due to the water absorption of the component (B) include porous silica powder, porous calcium carbonate, and porous nylon powder. Porous silica is more preferable from the viewpoint of water diffusivity and evaporability. Here, the porous silica includes hollow porous silica. Examples of commercially available porous silica products include the Sunsphere series (AGC SITEC) and the Godball series (Suzuki Yushi Kogyo Co., Ltd.).

The average particle size of the component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, still more preferably 5 μm or more, from the viewpoint of excellent water absorption (water diffusivity) of the coating film formed on the skin. 10 μm or more is more preferable, and from the viewpoint of abrasion resistance and water resistance of the coating film, 50 μm or less is more preferable, 30 μm or less is more preferable, and 20 μm or less is further preferable. The specific range of the average particle size is preferably 0.5 to 50 μm, more preferably 3 to 30 μm, further preferably 5 to 30 μm, and even more preferably 10 to 20 μm.
In the present invention, the average particle size is the average particle size when the powder is monodispersed, and is the volume average particle size of the particle size measured by the static light scattering method.

In the skin cosmetic of the present invention, the mass ratio of the component (A) to the component (B) from the viewpoint of ensuring water absorption (water diffusivity), abrasion resistance, and water resistance of the coating film formed on the skin. (A / B) is 0.01 or more and 2.5 or less. A / B is preferably 0.01 or more and 2.0 or less, more preferably 0.01 or more and 1.0 or less, still more preferably 0.01 or more and 0.8 or less, and even more preferably 0. It is 0.05 or more and 0.8 or less, and particularly preferably 0.10 or more and 0.4 or less. The water absorption of the coating film can be evaluated as the water diffusivity of the coating film shown in Examples described later.

The component (A) and the component (B) may be contained in the skin cosmetic of the present invention in the above mass ratio, but the content of the component (A) is the water absorption (water) of the coating film formed on the skin. From the viewpoint of ensuring diffusivity), abrasion resistance, and water resistance, 0.01% by mass or more is preferable, 0.02% by mass or more is more preferable, and 0.05% by mass or more is further preferable in the total amount of cosmetics. 1.0% by mass or more is even more preferable, 1.5% by mass or more is even more preferable, and 2.0% by mass or more is even more preferable. Further, 20% by mass or less is preferable, 12% by mass or less is more preferable, 10% by mass or less is further preferable, and 5% by mass or less is even more preferable. The content of the specific component (A) is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.02% by mass or more and 12% by mass or less, and 0.05% by mass or more and 10% by mass. % Or less is further preferable, 1.0% by mass or more and 10% by mass or less is even more preferable, 1.5% by mass or more and 10% by mass or less is even more preferable, 2.0% by mass or more and 10% by mass or less. Even more preferable. From the same viewpoint, the content of the component (B) is preferably 3% by mass or more, more preferably 5% by mass or more, further preferably 6% by mass or more, still more preferably 10% by mass or more in the total amount of the cosmetic. preferable. Further, 30% by mass or less is preferable, 18% by mass or less is more preferable, and 15% by mass or less is further preferable. The content of the specific component (B) is preferably 3% by mass or more and 30% by mass or less, more preferably 5% by mass or more and 18% by mass or less, and further preferably 6% by mass or more and 15% by mass or less. It is even more preferably 9% by mass or more and 15% by mass or less.

When applied to the skin, the skin cosmetic of the present invention forms a coating film composed of a composite of the component (A) and the component (B) on the skin surface, has excellent water absorption (water diffusivity), and is excellent. It is particularly useful as a sweat evaporative cosmetic and a deodorant cosmetic because it exhibits abrasion resistance and water resistance.
Further, a composition containing the component (A) and the component (B) and having a mass ratio (A / B) of the component (A) to the component (B) of 0.01 or more and 2.5 or less is excellent. Since it exhibits water absorption (water diffusivity), excellent abrasion resistance, and water resistance, it is useful as a transpiration accelerator for water containing sweat.

In addition to the above-mentioned components, the skin cosmetic of the present invention includes component (C) bactericide, antiseptic, powder, oils and fats, waxes, silicones, hydrocarbon oil, higher fatty acid, higher alcohol, synthetic ester oil. , Other surfactants, polymer compounds, antioxidants, pigments, emulsion stabilizers, pH regulators, astringents, preservatives, UV absorbers, chelating agents, moisturizers, thickeners, refreshing agents, anti-inflammatory It can contain agents, amino acids, vitamins, various plant extracts and the like.

Examples of the bactericide of the component (C) include isoppilmethylphenol, triclosan, benzalkonium chloride, benzethonium chloride, halocarban, trichlorocarbanilide, chlorhexidine hydrochloride, chlorhexidine gluconate, and β-glycyrrhetinic acid. Of these, isopropylmethylphenol is preferable.
The skin cosmetic of the present invention containing a bactericidal agent is useful as a deodorant cosmetic.

Here, the bactericidal agent of the component (C) preferably contains isopropylmethylphenol, and the content of the component (C) in the total amount of the cosmetic is 0.01 from the viewpoint of bactericidal effect and persistence on the skin. ~ 0.2% by mass is preferable, 0.02 to 0.15% by mass is more preferable, and 0.05 to 0.1% by mass is further preferable.

Further, in the skin cosmetic of the present invention, in addition to the bactericidal agent of the component (C), the component (D) carboxylic acid or a salt thereof, the component (E) 1,3-butylene glycol, and the component (F) HLB 10 to 13 Containing one or more of the nonionic surfactants selected from the above is the deodorant effect due to the excellent bactericidal effect, the residual bactericidal component on the skin (sustainability of bactericidal and deodorant effect), and the feeling of use (sustainability of deodorant effect) It is preferable in terms of (prevention of stickiness) and the like.

The carboxylic acid of the component (D) or a salt thereof is preferably an organic carboxylic acid having 1 to 8 carbon atoms or a salt thereof, and more preferably an organic carboxylic acid having 3 to 8 carbon atoms or a salt thereof.
Specific examples of the carboxylic acid of the component (D) include monocarboxylic acids such as acetic acid, propionic acid and capric acid; dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid and fumaric acid; and glycolic acid. , Lactic acid, hydroxyacrylic acid, glyceric acid, malic acid, tartaric acid, citrate and other hydroxycarboxylic acids; benzoic acid, salicylic acid, phthalic acid and other aromatic carboxylic acids; glutamate, aspartic acid and other acidic amino acids.
Specific examples of the counter ions constituting the salt include alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; and Examples thereof include cations derived from basic amino acids such as arginine and lysine. The salt is preferably an alkali metal salt, more preferably a sodium salt.
The component (D) is preferably one or two selected from the group consisting of dicarboxylic acid, hydroxycarboxylic acid and salts thereof from the viewpoint of bactericidal effect (deodorant effect) and leaving component (C) on the skin. The above is more preferably one or more selected from the group consisting of succinic acid, adipic acid, citric acid and salts thereof.

The content of the component (D) is 0.1 to 3 in the total amount of the cosmetic from the viewpoint of the bactericidal effect (deodorant effect), the viewpoint of leaving the component (C) on the skin, and the long-term stability of the component (C). It is preferably by mass, more preferably 0.2 to 2.8% by mass, still more preferably 0.5 to 2.5% by mass.

The 1,3-butylene glycol of the component (E) has an action of leaving a sufficient amount of the component (C) on the skin, and contributes to the long-term storage stability of the component (C).
The content of the component (E) is 0 in the total amount of the cosmetic from the viewpoint of obtaining a sufficient bactericidal effect, the viewpoint of the persistence of the component (C) on the skin, the long-term storage stability, the feeling of use, and the feeling of coolness. .1 to 10% by mass is preferable, 0.5 to 8% by mass is more preferable, and 1 to 5% by mass is more preferable.

By blending the nonionic surfactants of HLB10 to 13 of the component (F), the persistence of the component (C) on the skin is improved, and the long-term storage stability of the component (C) is improved. The component (F) is more preferably HLB 11 to 13, and further preferably HLB 12 to 13 from the viewpoint of improving the persistence of the component (C) and improving the long-term storage stability.
In the present invention, the HLB value is an index showing the hydrophilic-lipophilic balance (Hydrofil Lipophilic Balance), and in the present invention, the value calculated by the following formula by Oda, Teramura et al. Is used. The HLB value is the value of each nonionic surfactant before compounding.

As the component (F), a polyoxyethylene alkyl ether or a polyoxyethylene alkenyl ether having an alkyl group or an alkenyl group having 10 to 18 carbon atoms (hereinafter, also referred to as a polyoxyethylene alkyl ether in the present invention) is preferable.

The carbon number indicates the carbon number of the alkyl group or the alkenyl group constituting the component (F) polyoxyethylene alkyl ether, and is carbon from the viewpoint of improving the persistence of the component (C) on the skin and the long-term storage stability. The number 10 to 16 is preferable, and the number of carbon atoms 12 to 14 is more preferable.
From the same viewpoint, a polyoxyethylene alkyl ether having an alkyl group is preferable.
Specifically, polyoxyethylene lauryl ether (12 carbon atoms, HLB 10 to 13), polyoxyethylene myristyl ether (14 carbon atoms, HLB 10 to 13), polyoxyethylene cetyl ether (16 carbon atoms, HLB 10 to 13), Examples thereof include polyoxyethylene oleyl ether (18 carbon atoms, HLB 10 to 13), and polyoxyethylene lauryl ether is mentioned as a suitable one.
The number of moles of ethylene oxide added to the component (F) polyoxyethylene alkyl ether is preferably 3 to 9 and more preferably 4 to 8 from the viewpoint of the persistence of the component (C) on the skin and long-term storage stability. 5 to 7 are more preferable.
The content of the component (F) is preferably 0.01 to 1% by mass, more preferably 0.% by mass, based on the total amount of the cosmetic, from the viewpoint of the persistence of the component (C) on the skin and the long-term storage stability. It is 01 to 0.8% by mass, more preferably 0.01 to 0.5% by mass.

The skin cosmetic of the present invention has a component (G) HLB value of 4 to 7 and a glyceryl group liquid at 25 ° C. from the viewpoint of further improving the persistence of the component (C) on the skin and the feeling of coolness. It is preferable to contain a nonionic surfactant having.

The liquid at 25 ° C. means that the viscosity at 25 ° C. is 100,000 mPa · s or less.
The component (G) nonionic surfactant has a branched alkyl group or alkenyl group having 8 to 22 carbon atoms, and is ether-bonded or ester-bonded to a glyceryl group, or bonded via an alkylene oxide group. What is preferable.

Examples of the nonionic surfactant of the component (G) include alkyl glyceryl ether, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene glyceryl ether fatty acid ester, polyoxyethylene hydrogenated castor oil, and polyoxyethylene cured castor oil fatty acid. One or more selected from esters and the like is preferable. Among them, one or more selected from alkyl glyceryl ethers and glycerin fatty acid esters are preferable, and one selected from alkyl glyceryl ethers, from the viewpoint of improving the persistence of the component (A) on the skin and the feeling of coolness. Alternatively, two or more types are preferable.

Examples of such a component (G) include isostearyl glyceryl ether (HLB 5.4), 2-ethylhexyl glyceryl ether (HLB7), glyceryl monoisostearate (HLB6), and monoisostearic acid (degree of polymerization 2) polyglyceryl (HLB5). .5), Polyoxyethylene monoisostearate (5) Hardened castor oil (HLB4), Polyoxyethylene monoisostearate (10) Hardened castor oil (HLB5), Polyoxyethylene monoisostearate (15) Hardened castor oil (HLB7) ), Polyoxyethylene triisostearate (10) Hardened castor oil (HLB4), Polyoxyethylene triisostearate (15) Hardened castor oil (HLB5), Polyoxyethylene triisostearate (20) Hardened castor oil (HLB6), Examples thereof include polyoxyethylene triisostearate (30) hardened castor oil (HLB7).
Of these, isostearyl glyceryl ether, 2-ethylhexyl glyceryl ether, and glyceryl monoisostearate are preferable from the viewpoint of improving the persistence of the component (C) on the skin and a feeling of coolness, and isostearyl glyceryl from the viewpoint of usability. Ether is preferred.

The content of the component (G) is preferably 0.01 to 1% by mass in the total amount of the cosmetic from the viewpoint of obtaining a sufficient bactericidal effect and improving the persistence and coolness of the component (C) on the skin. , More preferably 0.01 to 0.8% by mass, and even more preferably 0.01 to 0.5% by mass.

The dosage form of the skin cosmetic of the present invention is not particularly limited, and examples thereof include cream, roll-on type, mist, lotion, aerosol, spray, stick, etc., but cream form, roll-on type, mist, spray or lotion. Is more preferable from the viewpoint of enhancing antiperspirant action and bactericidal action.

When the skin cosmetic of the present invention is in the form of a cream, in addition to the above-mentioned components, a solid oily component having a melting point of 60 ° C. or higher as the component (H), a polyether-modified silicone as the component (I), and a component (J). ) Is a powder other than the component (A) and the component (B), the component (K) is an antioxidant, and the component (L) is a poly (N-acylalkyleneimine) -bonded silicone polymer. The above can be contained.

The solid oily component having a melting point of 60 ° C. or higher of the component (H) is a solid having a melting point of 60 ° C. or higher and a normal temperature (25 ° C.), and preferably has a melting point of 60 to 110 ° C. By using such a high melting point oily component, the bactericidal action can be improved and a smooth feeling of use can be obtained.
In the present invention, the melting point is a value measured according to the quasi-drug raw material standard I (general test method, 70. melting point measurement method 1st method).

Examples of such oily components include solid oils such as hydrocarbons, waxes, esters, and silicones, which are used for ordinary skin external preparations, and include animal waxes, vegetable waxes, mineral waxes, and synthetic waxes. It is selected from wax, a mixture thereof, and the like. For example, paraffin, selecin, synthetic hydrocarbon wax, fishertroph wax, microcrystalline wax, polyethylene wax, ethylene propylene copolymer, candelilla wax, honey wax, carnauba wax and the like can be used.
Of these, hydrocarbons are preferred, especially ceresin (melting point 72-76 ° C), microcrystalline wax (melting point 60-85 ° C), polyethylene wax (melting point 75-105 ° C), paraffin wax (melting point 70-78 ° C). ) Is preferable in terms of usability.
The content of the component (H) is preferably 0.5 to 10% by mass, more preferably 0.5 to 8% by mass, and 1 to 6% by mass in the total amount of the cosmetic from the viewpoint of bactericidal action and usability. More preferred.

By using the polyether-modified silicone of the component (I), an excellent bactericidal action and a good feeling of use (non-stickiness) can be obtained. The polyether-modified silicone of the component (I) may be a dimethylpolysiloxane having a polyoxyethylene group or a polyoxypropylene group, and examples thereof include those represented by the following formula (1) or formula (2). One of these may be used alone or in combination of two or more.

[In formula (1), R ¹ is − (CH ₂ ) _{3 −} O − (C ₂ H ₄ O) _p − (C ₃ H ₆ O) _q − A (where A is a hydrogen atom or carbon number. 1 to 12 alkyl groups are shown, p and q each independently represent an integer from 0 to 50, and p + q ≧ 1), R ² is an independent methyl group or − (CH). ₂ ) _{3 −} O − (C ₂ H ₄ O) _s − (C ₃ H ₆ O) _{t −} B (where B indicates a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and s and t are Each independently indicates an integer of 0 to 50, and s + t ≧ 1), m indicates an integer of 1 to 2000, and n indicates an integer of 0 to 1000. However, when n is 0, at least one of R ² is − (CH ₂ ) _{3 −} O − (C ₂ H ₄ O) _s − (C ₃ H ₆ O) _{t −} B (however, B, s). And t are synonymous with the above). ]

[In equation (2), r represents an integer of 1 to 20, and x, y, and z each independently represent an integer of 1 to 500. ]

Examples of commercially available products of the component (I) include KF6011, KF6012, KF6013, KF6015, KF6016, KF6017, and KF6028 (all manufactured by Shin-Etsu Chemical Co., Ltd.).

The content of the component (I) is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, and 0.1 to 3% by mass in the total amount of the cosmetic from the viewpoint of bactericidal action and usability. % Is more preferable.

By using a powder other than the component (A) and the component (B) as the component (J), the bactericidal action is improved and a good usability can be obtained. As the component (J), the powder other than the component (A) and the component (B) may be either the component (J-1) organic powder or the component (J-2) inorganic powder, and one kind may be used alone. Alternatively, two or more types may be used in combination. Further, the shape may be spherical, needle-shaped, or plate-shaped. Further, it may be treated with alumina, silica, zinc or the like, or hydrophobically treated with silicone or the like.

Examples of the organic powder of the above component (J-1) include lauroyl lysine, methylpolysiloxane reticulated polymer, polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, polyurethane, benzoguanamine powder, polymethylbenzoguanamine powder, and tetra. Fluoroethylene powder and the like can be mentioned.

The inorganic powder of the above component (J-2) includes titanium oxide, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, mica, and the like. Kaolin, sericite, white mica, synthetic mica, phlogopite, red mica, black mica, lithia mica, aluminum silicate, magnesium silicate, aluminum magnesium silicate, calcium silicate, barium silicate, strontium silicate, tungsten acid Examples include metal salts.

It is more preferable to contain one or more of the components (J) selected from the methylpolysiloxane reticulated polymer. The methylpolysiloxane reticulated polymer is already commercially available as a raw material for cosmetics and can be used without any limitation. Among them, those having a spherical shape and an average particle diameter in the range of 1.0 to 30.0 μm are preferable, and more preferably 4.0 to 15 μm. In the present invention, the average particle size is the average particle size at the time of monodisperse of the powder, and is the volume average particle size of the particle size measured by the static light scattering method.

The methylsiloxane reticulated polymer is a solid product obtained by emulsion polymerization of methyltrimethoxysiloxane in an alkaline aqueous solution, and specific examples thereof include the Tospearl series (Tospearl 145A and the like) manufactured by GE Toshiba Silicone Co., Ltd. Among these, the Tospearl series, which is a methylsiloxane reticulated polymer, is particularly preferable in terms of smoothness.

The content of the powder of the component (J) is preferably 1 to 20% by mass, more preferably 2 to 10% by mass, and 2 to 5% by mass in the total amount of the skin cosmetics from the viewpoint of bactericidal action and usability. Is even more preferable.

As the antioxidant of the component (K), dibutylhydroxytoluene (BHT); vitamin E such as butylhydroxyanisole and δ-tocopherol, and derivatives thereof; thiotaurine, mematsuyoigusa extract, β-carotene, catechin compound, flavonoid compound, polyphenol compound. Etc. can be exemplified. The catechin compound can be used as a green tea extract or the like. Of these, dibutylhydroxytoluene (BHT) or δ-tocopherol is preferable from the viewpoint of improving usability. These antioxidants may be used alone or in combination of two or more.

The content of the component (K) is 0.001% by mass or more, particularly 0.005% by mass or more in the total amount of skin cosmetics from the viewpoint of antioxidant prevention, and 1% by mass from the viewpoint of reducing the sticky feeling after application. Hereinafter, it is particularly preferable to contain 0.5% by mass or less.

The poly (N-acylalkyleneimine) -bonded silicone polymer of the component (L) has the following formula (L) via an alkylene group containing a heteroatom at least one of the silicon atoms at the end or side chain of the organopolysiloxane segment. Examples thereof include silicone-based polymers in which a poly (N-acylalkyleneimine) composed of a repeating unit represented by 3) is bonded.

(In the formula, R ³ represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, a cycloalkyl group, an aralkyl group or an aryl group, and l represents a number of 2 or 3).

Preferred examples of such silicone-based polymers include poly (N-formylethyleneimine) -modified silicone, poly (N-acetylethyleneimine) -modified silicone, poly (N-propionylethyleneimine) -modified silicone, and poly (Nn-octa). Noylethyleneimine-modified silicone, poly (Nn-dodecanoylethyleneimine) -modified silicone, poly (N-formylpropyleneimine) -modified silicone, poly (N-acetylethyleneimine) -modified silicone, poly (N-acetylpropyleneimine) ) Modified silicone, poly (N-propionylpropyleneimine) modified silicone, poly (Nn-octanoylpropyleneimine) modified silicone, poly (Nn-dodecanoylpropyleneimine) modified silicone and the like.

The content of the component (L) is preferably 0.1 to 10% by mass, more preferably 0.2 to 8% by mass, and 0.5 to 6 in the total amount of the skin cosmetics from the viewpoint of a smooth feeling of use. Mass% is more preferred.

The skin cosmetic of the present invention can be a roll-on type cosmetic. Here, the roll-on type is a cosmetic in which a cosmetic composition is filled in a roll-on container, and is applied by applying a roll to an application site. For roll-on type cosmetics, the component (M) is a lower alcohol having 2 to 4 carbon atoms, the component (N) is a water-soluble polymer, and the component (O) is sorbitan monooleate, sorbitan trioleate, or monoisostearic acid. One or more selected from the group consisting of sorbitan, polyoxyethylene oleyl ether and polyoxyethylene glyceryl triisostearate, trimethylsiloxysilicate as component (P), and poly (N-acylalkylene) as component (L). It can contain one or more selected from imine) -linked silicone-based polymers.

Ethanol is preferable as the lower alcohol having 2 to 4 carbon atoms of the component (M). The content of the lower alcohol having 2 to 4 carbon atoms of the component (M) is preferably 20 to 80% by mass, more preferably 40 to 60% by mass, from the viewpoint of usability and coolness.

By containing the water-soluble polymer of the component (N), the persistence of the bactericidal agent of the component (C) on the skin can be improved. As the water-soluble polymer, any of a natural polymer, a semi-synthetic polymer, and a synthetic polymer can be used.
Examples of natural polymers include xanthan gum, carrageenan, alginic acid and the like. Examples of the semi-synthetic polysaccharide polymer include modified polysaccharides such as hydroxycellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, and cationized cellulose. Examples of the synthetic polymer include acrylic polymers such as carbomer (crosslinked polyacrylic acid), polyacrylic acid, sodium polyacrylate, acrylic acid / alkyl methacrylate copolymer; polyvinylpyrrolidone, polyvinyl alcohol, and cationized polyvinylpyrrolidone. Be done. Of these, carbomer, acrylic acid / alkyl methacrylate copolymer, hydroxypropyl cellulose, and sodium carboxymethyl cellulose are preferable.

Commercially available products of carbomer include carbomer 910, carbomer 934, carbomer 940, carbomer 941, carbomer 980, carbomer 981 (all manufactured by Lubrizol Advanced Materials, Inc.) and the like, and acrylic acid / methacryl. Examples of commercially available carbomer 1382, carbomer ETD2020, PEMULEN TR-1, PEMULEN TR-2 (all manufactured by Rubyzol Advanced Materials, Inc.) and the like are commercially available products of hydroxypropyl cellulose. Examples thereof include HPC-M and HPC-H (manufactured by Nippon Soda), and examples of commercially available products of sodium carboxymethyl cellulose include CMC Daicel (manufactured by Daicel Chemical Industry Co., Ltd.).

As the water-soluble polymer of the component (N), one type or two or more types can be used, and the content thereof is in the total amount of the cosmetic from the viewpoint of the persistence of the component (C) on the skin and the feeling of use. In addition, 0.01% by mass or more is preferable, 0.05% by mass or more is more preferable, 5% by mass or less is preferable, and 3% by mass or less is more preferable. The content of the component (N) is preferably 0.01 to 5% by mass, more preferably 0.05 to 3% by mass in the total amount of the cosmetic.

Containing one or more selected from the group consisting of component (O) sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, polyoxyethylene oleyl ether and polyoxyethylene glyceryl triisostearate. As a result, the persistence of the component (C) on the skin and the feeling of use are improved.

The content of the component (O) is preferably 0.01 to 3% by mass, preferably 0.03 to 1% by mass, based on the total amount of the cosmetic, from the viewpoint of the persistence of the component (C) on the skin and the feeling of use. Is more preferable, and 0.05 to 0.5% by mass is further preferable.

The trimethylsiloxysilicic acid of the component (P) is not limited as long as it is usually used in cosmetics, and any one can be used, and it is a compound having a crosslinked structure having a siloxane structure as a main skeleton. ₃ ) ₃ SiO _1/2 ] _X [SiO ₂ ] Those represented by _Y (X is 1 to 3 and Y is 0.5 to 8) are preferable.
Further, the trimethylsiloxysilicic acid of the component (P) preferably has a weight average molecular weight of 1000 to 10000, more preferably 2000 to 9000, from the viewpoint of the persistence of the component (C) on the skin and the feeling of use. It is preferable, and the one of 3000 to 6000 is more preferable. Further, the property may be liquid, gum-like, paste-like, solid-like or the like at 25 ° C., but a solid-like one is preferable. Further, from the viewpoint of compoundability, it is preferable that the solution or dispersion is diluted with a solvent, or the solution or dispersion is obtained by mixing in advance. As the solvent for diluting or dispersing the trimethylsiloxysilicate of the component (P), one or more selected from dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane are preferable, and volatile. More preferably, dimethylpolysiloxane and decamethylcyclopentasiloxane. Volatility means that it has a flash point of 35 to 90 ° C.
As a commercially available product of the component (P), KF-7312T, KF-7312J, KF-7312K (all manufactured by Shin-Etsu Chemical Co., Ltd.) and the like previously dissolved in a solvent can be preferably used.

The content of the component (P) is preferably 0.005 to 2% by mass, preferably 0.008 to 1% by mass, based on the total amount of the cosmetic, from the viewpoint of the persistence of the component (C) on the skin and the feeling of use. Is more preferable, and 0.01 to 0.5% by mass is further preferable.

In the case of the roll-on type, the content of the component (L) poly (N-acylalkyleneimine) -bonded silicone polymer is the total amount of the cosmetic in terms of the persistence of the component (C) bactericide on the skin and the feeling of use. Among them, 0.3 to 5% by mass is preferable, 0.4 to 4% by mass is more preferable, and 0.5 to 3% by mass is further preferable.

When the skin cosmetic of the present invention is in the form of mist, spray or lotion, polyoxyethylene polyoxypropylene decyltetradecyl ether (for example, PPG-6 decyltetradeceth) may be used as a component (Q) in addition to the above components. -30), and one or more selected from the component (I) polyether-modified silicone can be contained.

The content of the component (Q) is preferably 0.05 to 2% by mass, more preferably 0.08 to 1% by mass, and 0.1 to the total amount of the cosmetic, from the viewpoint of coolness and long-term storage stability. ~ 0.5% by mass is more preferable.

In the case of mist, spray or lotion, the content of the component (I) is preferably 0.05 to 2% by mass, preferably 0 to 2% by mass, in the total amount of the cosmetic, from the viewpoint of spreading to the skin, familiarity, and stability over time. .08 to 1.5% by mass is more preferable, and 0.1 to 1% by mass is further preferable.

Since the cosmetic of the present invention is used in various forms as described above, the component (A), the component (B) and other components are added, mixed, and heated as necessary to obtain various types. It can be manufactured by filling a container according to the form.

The content of the antiperspirant in the skin cosmetic of the present invention is preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 1 from the viewpoint of maintaining a refreshing sensation associated with the evaporation of sweat. It is preferably mass% or less and is not substantially contained. Examples of the antiperspirant include chlorohydroxyaluminum, zinc oxide, zinc phenol sulfonate, and baked alum.
Regarding the above-described embodiment, the present invention further discloses the following compositions and methods.

<1> A skin cosmetic containing the following component (A) and component (B), and the mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and 2.5 or less. ..
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbent powder <2> component (A) having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less is preferable. One or more selected from crosslinked (meth) acrylic acid ester-based resin powder, silicone elastomer spherical powder, and urethane resin powder, and more preferably crosslinked (meth) acrylic acid ester-based resin powder <1. > The listed skin cosmetics.
<3> The skin cosmetic according to <2>, wherein the crosslinked (meth) acrylic acid ester-based resin powder is preferably a crosslinked resin powder having a repeating unit derived from at least a (meth) acrylic acid ester monomer.
<4> The average particle size of the component (A) is preferably 0.09 μm or more, more preferably 0.2 μm or more, still more preferably 0.3 μm or more, and preferably 20 μm or less, more preferably 10 μm or less. The skin cosmetic according to any one of <1> to <3>, which is more preferably 5 μm or less, still more preferably 2.2 μm or less.
<5> component (B), preferably the surface area 150 meters ² / g or more 1000 m ² / g or less of the porous silica powder ratio specific surface area of 150 meters ² / g or more 1000 m ² / g or less porous calcium carbonate and a specific surface area One or more selected from porous nylon powders of 150 m ² / g or more and 1000 m ² / g or less, and more preferably a porous silica powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less <1>. ~ The skin cosmetic according to any one of <4>.
<6> The average particle size of the component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, further preferably 5 μm or more, still more preferably 10 μm or more, and preferably 50 μm or less, more preferably 30 μm. Hereinafter, the skin cosmetic according to any one of <1> to <5>, which is more preferably 20 μm or less.
<7> The mass ratio (A / B) of the component (A) to the component (B) is preferably 0.01 or more and 2.0 or less, more preferably 0.01 or more and 1.0 or less, and further. Any of <1> to <6>, preferably 0.01 or more and 0.8 or less, more preferably 0.05 or more and 0.8 or less, and further preferably 0.10 or more and 0.4 or less. The skin cosmetics listed in.
<8> The content of the component (A) is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, still more preferably, in the total amount of the cosmetics. Is 1.0% by mass or more, more preferably 1.5% by mass or more, further preferably 2.0% by mass or more, and preferably 20% by mass or less, more preferably 12% by mass or less. The skin cosmetic according to any one of <1> to <7>, which is more preferably 10% by mass or less, still more preferably 5% by mass or less.
<9> The content of the component (B) is preferably 3% by mass or more, more preferably 5% by mass or more, still more preferably 6% by mass or more, still more preferably 10% by mass or more in the total amount of the cosmetic. The skin cosmetic according to any one of <1> to <8>, which is preferably 30% by mass or less, more preferably 18% by mass or less, and further preferably 15% by mass or less.
<10> Further, the component (C) is selected from a disinfectant, preferably isoppilmethylphenol, triclosan, benzalkonium chloride, benzethonium chloride, halocarban, trichlorocarbanilide, chlorhexidine hydrochloride, chlorhexidine gluconate and β-glycyrrhetinic acid. The skin cosmetic according to any one of <1> to <7>, which contains a disinfectant, more preferably isopropylmethylphenol.
<11> Further, one or two selected from a carboxylic acid or a salt thereof as the component (D), 1,3-butylene glycol as the component (E), and a nonionic surfactant of HLB 10 to 13 as the component (F). The skin cosmetic according to <8>, which contains the above.
<12> The content of the component (C) is preferably 0.01 to 0.2% by mass, more preferably 0.02 to 0.15% by mass, and further preferably 0.05 to 0.1% by mass. A skin cosmetic according to <10> or <11>.
<13> The component (D) carboxylic acid or a salt thereof is one or more selected from monocarboxylic acid, dicarboxylic acid, hydroxycarboxylic acid, aromatic carboxylic acid, acidic amino acid and salts thereof. <11> Or the skin cosmetic according to <12>.
<14> The content of the component (D) is preferably 0.1 to 3% by mass, more preferably 0.2 to 2.8% by mass, and further preferably 0.5 to 2.5 in the total amount of the cosmetic. The skin cosmetic according to any one of <11> to <13>, which is% by mass.
<15> The content of the component (E) is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, still more preferably 1 to 5% by mass in the total amount of the cosmetic. > To the skin cosmetic according to any one of <14>.
<16> The skin cosmetic according to any one of <11> to <15>, wherein the component (F) is a polyoxyethylene alkyl ether or a polyoxyethylene alkenyl ether having an alkyl group or an alkenyl group having 10 to 18 carbon atoms. Fee.
<17> The content of the component (F) is preferably 0.01 to 1% by mass, more preferably 0.01 to 0.8% by mass, still more preferably 0.01 to 0.5 in the total amount of the cosmetics. The skin cosmetic according to any one of <11> to <16>, which is% by mass.
<18> The skin makeup according to any one of <11> to <17>, which further comprises a nonionic surfactant having an HLB value of 4 to 7 as a component (G) and a liquid glyceryl group at 25 ° C. Fee.
<19> The skin cosmetic according to any one of <1> to <18> in the form of cream.
<20> Further, the component (H) is a solid oily component having a melting point of 60 ° C. or higher, the component (I) is a polyether-modified silicone, and the component (J) is a powder other than the component (A) and the component (B). The skin cosmetic according to <19>, which contains one or more selected from an antioxidant as (K) and a poly (N-acylalkyleneimine) -bonded silicone polymer as the component (L).
<21> The skin cosmetic according to any one of <1> to <20>, which is a roll-on type form.
<22> Further, the component (M) is a lower alcohol having 2 to 4 carbon atoms, the component (N) is a water-soluble polymer, and the component (O) is sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, or poly. One or more selected from the group consisting of oxyethylene oleyl ether and polyoxyethylene glyceryl triisostearate, trimethylsiloxysilicate as component (P), and poly (N-acylalkyleneimine) bond as component (L). The skin cosmetic according to <21>, which contains one or more selected from silicone-based polymers.
<23> The skin cosmetic according to any one of <1> to <22>, which is in the form of mist, spray or lotion.
<24> The skin cosmetic according to <23>, further containing one or more selected from polyoxyethylene polyoxypropylene decyltetradecyl ether as the component (Q) and polyether-modified silicone as the component (I). ..
<25> A method for evaporating sweat, which comprises the step of applying the skin cosmetic according to any one of <1> to <24> to the skin.
<26> A coating film in which the component (A) and the component (B) are combined is formed on the surface of the skin, which comprises the step of applying the skin cosmetic according to any one of <1> to <24> to the skin. Method.
<27> From a composition containing the following component (A) and component (B) and having a mass ratio (A / B) of component (A) to component (B) of 0.01 or more and 2.5 or less. Water transpiration accelerator.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbent powder <28> having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less <1> to <24> as a deodorant Use of any of the skin cosmetics listed.

Next, the present invention will be described in more detail with reference to examples. In addition, Examples 17, 18, 23-28, 37 and 38 are reference examples.

Component (A) A method for producing three types of powders (a1, a2, a3) which are crosslinked resin powders having self-adhesive ability will be described. The characteristics of each powder are that it does not become dry while ensuring non-greasyness on the skin, gives a smooth feel and continues, and the average particle size is 0.3 μm for a1 and 2.2 μm for a2, respectively. , A3 is set to be 10 μm. The individual manufacturing methods are shown below.

Production Example 1 (Production of powder (a1))
85 g of lauryl methacrylate, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide were placed in a beaker, mixed and stirred to dissolve them. 0.75 g of sodium N-stearoyl-N-methyltaurine (SMT) was dissolved therein. 400 g of ion-exchanged water was added, and the mixture was dispersed with a homomixer until the average particle size became 0.3 μm.
This dispersion was poured into a four-necked flask, and nitrogen substitution was performed for 30 minutes with stirring. The temperature inside the flask was heated to 80 ° C. by an oil bath, and after reaching 80 ° C., polymerization was carried out for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a1).

Production Example 2 (Production of powder (a2))
82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide were placed in a beaker and dissolved by mixing and stirring. To this, 400 g of ion-exchanged water in which 0.75 g of sodium N-stearoyl-N-methyltaurine (SMT) was dissolved was added, and the mixture was dispersed with a homomixer until the average particle size became 2.2 μm.
This dispersion was poured into a four-necked flask, and nitrogen substitution was performed for 30 minutes with stirring. The temperature inside the flask was heated to 80 ° C. by an oil bath, and after reaching 80 ° C., polymerization was carried out for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a2).

Production Example 3 (Production of powder (a3))
82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide were placed in a beaker and dissolved by mixing and stirring. To this, 400 g of ion-exchanged water in which 0.75 g of sodium dodecyl sulfate (SDS) was dissolved was added, and the mixture was dispersed with a homomixer until the average particle size became 10 μm.
This dispersion was poured into a four-necked flask, and nitrogen substitution was performed for 30 minutes with stirring. The temperature inside the flask was heated to 80 ° C. by an oil bath, and after reaching 80 ° C., polymerization was carried out for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a3).

Examples 1-37 and Comparative Examples 1-11
The samples shown in Tables 1 to 5 were prepared and evaluated for water diffusivity, abrasion resistance and water resistance. The results are shown in Tables 1-5.

(Production method)
The components (A) and (B) were weighed, ion-exchanged water was added, and the mixture was stirred and mixed with a propeller.

(Water diffusivity test)
The sample is applied onto a glass plate in a size of 4 cm × 4 cm (applied amount 0.1 mL / cm ² ) and dried. 0.5 mL of water was dropped on the center of the dry coating film, and the diameter of the concentric circles 1 minute after spreading on the coating film was measured. The larger the value, the better the water diffusivity.

(Abrasion resistance)
(1) Apply the sample to a slide glass plate at 0.1 mL / cm ² and dry. The weight of the dry coating film is measured (weight a).
(2) A load of 20 g is applied to a qualitative filter paper (product name: Whatman 1), and the dry coating film is reciprocated 5 times.
(3) The weight of the dry coating film after friction is measured (weight b).
(4) The friction resistance value (b / a * 100) is calculated from the values obtained in the above (1) and (3). The larger the value, the better the abrasion resistance.

(water resistant)
(1) Apply the sample to a slide glass plate at 0.1 mL / cm ² and dry. Weigh the dry coating (weight a)
(2) Immerse the slide glass plate in a beaker containing ion-exchanged water so that the dry coating film is immersed in water, and let stand for 6 hours.
(3) After taking out the slide glass plate and drying it, the weight of the dried coating film is measured (weight b).
(4) The water resistance value (b / a * 100) is calculated from the values obtained in the above (1) and (3). The larger the value, the better the water resistance.

Next, an example of manufacturing the cosmetic of the present invention is shown.
The obtained skin cosmetics were excellent in sweat evaporability, and were excellent in sweat evaporative function for a long time without disappearing from the skin due to sweat or friction.

Example 38

Example 39

The lotion of Example 39 had a water diffusivity value of 16 mm, a friction resistance value of 76%, and a water resistance value of 72%.

Example 40

The cosmetics of Example 40 had a water diffusivity value of 17 mm, a friction resistance value of 75%, and a water resistance value of 74%.

Example 41

The cosmetic of Example 41 had a water diffusivity value of 13 mm, a friction resistance value of 72%, and a water resistance value of 70%.

Claims (20)

A skin cosmetic containing the following component (A) and component (B), and the mass ratio (A / B) of the component (A) to the component (B) is 0.06 or more and 2.5 or less.
(A) crosslinked (meth) acrylate resin powder, at least one selected from silicone elastomer spherical powder and a urethane resin powder, and an average particle diameter of 4μm or less than 0.09 .mu.m, a self-adhesion ability crosslinked and the resin powder (B) porous silica powder and one or more selected from a porous calcium carbonate, and the specific surface area is less than 150 meters ² / g or more 1000 m ² / g, spherical water-absorbing powder having : 5% by mass or more and 30% by mass or less in the total amount of skin cosmetics Average particle diameter, skin cosmetic of claim 1, wherein at 0.1μm or more 4μm following components (A). The skin cosmetic according to claim 1 or 2 , wherein the average particle size of the component (B) is 0.5 μm or more and 50 μm or less. The skin cosmetic according to any one of claims 1 to 3 , wherein the component (A) is a crosslinked (meth) acrylic acid ester-based resin powder. The skin cosmetic according to any one of claims 1 to 4 , wherein the component (B) is a porous silica powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less. The skin cosmetic according to any one of claims 1 to 5 , wherein the average oil absorption of the component (B) as measured according to JIS K 5101-13-1 is 300 mL / 100 g or more and 500 mL / 100 g or less. The skin cosmetic according to any one of claims 1 to 6 , further comprising a bactericidal agent as the component (C). Fungicide of component (C) is isopropyl methylphenol, triclosan, benzalkonium chloride, benzethonium chloride, halocarban, trichlorocarbanilide, according to claim 7, wherein is at least one selected from chlorhexidine hydrochloride and chlorhexidine gluconate Skin cosmetics. The skin according to claim 7 or 8 , further containing a carboxylic acid or a salt thereof as the component (D), 1,3-butylene glycol as the component (E), and a nonionic surfactant of HLB 10 to 13 as the component (F). Cosmetics. The skin cosmetic according to any one of claims 7 to 9 , further comprising a nonionic surfactant having an HLB of 4 to 7 as the component (G) and having a glyceryl group liquid at 25 ° C. The skin cosmetic according to any one of claims 1 to 10 , which is in the form of a cream. Further, the component (H) is a solid oily component having a melting point of 60 ° C. or higher, the component (I) is a polyether-modified silicone, the component (J) is a powder other than the component (A) and the component (B), and the component (K). The skin cosmetic according to claim 11, which contains one or more selected from an antioxidant and a poly (N-acylalkyleneimine) -bonded silicone polymer as the component (L). The skin cosmetic according to any one of claims 1 to 10 , which is a roll-on type. Further, the component (M) is a lower alcohol having 2 to 4 carbon atoms, the component (N) is a water-soluble polymer, and the component (O) is sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, and polyoxyethylene oleyl. One or more selected from the group consisting of ether and polyoxyethylene glyceryl triisostearate, a poly (N-acylalkyleneimine) -bonded silicone polymer as the component (L), and trimethylsiloxysilicate as the component (P). The skin cosmetic according to claim 13, which contains one or more selected from the above. The skin cosmetic according to any one of claims 1 to 10 , which is in the form of a mist, spray or lotion. The skin cosmetic according to claim 15, further comprising one or more selected from polyoxyethylene polyoxypropylene decyltetradecyl ether as the component (Q) and polyether-modified silicone as the component (I). The skin cosmetic according to any one of claims 1 to 16 , which is for deodorant. A method for evaporating sweat, which comprises the step of applying the skin cosmetic according to any one of claims 1 to 17 to the skin. A method for forming a coating film in which the component (A) and the component (B) are compounded on the surface of the skin, which comprises the step of applying the skin cosmetic according to any one of claims 1 to 17 to the skin. Water containing the following component (A) and component (B) and having a mass ratio (A / B) of component (A) to component (B) of 0.06 or more and 2.5 or less. Transpiration accelerator.
(A) crosslinked (meth) acrylate resin powder, at least one selected from silicone elastomer spherical powder and a urethane resin powder, and an average particle diameter of 4μm or less than 0.09 .mu.m, a self-adhesion ability crosslinked and the resin powder (B) porous silica powder and one or more selected from a porous calcium carbonate, and the specific surface area is less than 150 meters ² / g or more 1000 m ² / g, spherical water-absorbing powder having : 5% by mass or more and 30% by mass or less in the total amount of the composition