TW201818916A - Skin cosmetic - Google Patents

Abstract

Provided is a skin cosmetic with which it is possible to cope with generation of a large amount of sweat. Provided is a skin cosmetic that contains a component (A) and a component (B) below, and in which the mass ratio (A/B) of the component (A) relative to the component (B) is 0.01-2.5. (A) A cross-linked resin powder having a self-adhesion ability (B) A spherical water-absorbing powder having a specific surface area of 150-1000 m2/g.

Description

   Skin cosmetics   

The invention relates to a skin cosmetic, in particular to a skin cosmetic containing powder.

As a cosmetic material for suppressing the stickiness or odor of sebum or sweat and providing a refreshing feeling, a deodorant cosmetic material is used. Anti-perspirant or bactericidal ingredients are blended in this deodorant cosmetic. As the antiperspirant component, various aluminum compounds having astringent action, zinc p-phenol sulfonate, and the like are used. As a cosmetic material containing such an antiperspirant component, for example, a powdered solid cosmetic material formulated with powder in addition to an antiperspirant component and a bactericidal component has been reported (Patent Document 1), which contains a silicone gel and a polyhydric alcohol fatty acid ester. Deodorant stick for powders, curing agents and deodorant components (Patent Document 2), an antiperspirant deodorant composition containing an aluminum compound, a phenolic fungicide, an aldehyde fragrance, a chelating agent, and water (Patent Document 3) Wait.

    [Patent Literature]    

[Patent Document 1] Japanese Patent Laid-Open No. 2010-77094

[Patent Document 2] Japanese Patent Laid-Open No. 2015-3891

[Patent Document 3] Japanese Patent Laid-Open No. 2016-113447

The present invention provides a skin cosmetic comprising the following component (A) and component (B), and a 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 with self-adhesive ability

(B) a specific surface area of 150m ² / g or more and 1000m ² / g or less of the water-absorbing spherical powder

In addition, the present invention provides a sweat evaporation method, which includes the step of applying the skin cosmetic material to the skin.

The present invention also provides a method for forming a coating film composed of the component (A) and the component (B) on the surface of the skin. The method includes the step of applying the skin cosmetic material to the skin.

The present invention also provides an evapotranspiration promoter comprising the following components (A) and (B), and the mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and Compositions below 2.5.

(A) Crosslinked resin powder with self-adhesive ability

(B) a specific surface area of 150m ² / g or more and 1000m ² / g or less of the water-absorbing spherical powder

In the case of sweating a lot, the conventional antiperspirant has a problem that a sufficient effect cannot be obtained. For example, the antiperspirant component with astringent effect cannot suppress sweat generated during commuting or exercising. In addition, by absorbing sweat with water-absorbing powder, it is impossible to cope with a large amount of sweat during commuting.

Therefore, the present invention provides a skin cosmetic material that can cope with even a large amount of sweat.

Accordingly, the inventors of the water-absorbent powder cosmetic skin for various studies have found that: when a specific surface area of 150m ² / g or more and 1000m ² / g or less, and having a water-absorbing powder having the self- With the combination of cross-linked resin powders with viscous ability, the sweat absorbed by the water-absorbing powder quickly evaporates and a large amount of sweat quickly evaporates, and even if a large amount of sweat is generated, the water-absorbing powder remains on the skin, and Even if rubbing does not disappear from the skin, the present invention as described above is completed.

If the skin cosmetic of the present invention is applied to the skin, a coating film composed of the component (A) and the component (B) 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-absorbing powder below ² / g quickly evaporates, and a large amount of sweat evaporates quickly, and even if a large amount of sweat is generated, the component (B), that is, the water-absorbing powder remains on the skin, even if rubbed. Disappears from the skin. Therefore, the skin cosmetic of the present invention exerts the evaporative function of sweat for a long time, that is, even when a large amount of sweat is generated, the sweat is quickly absorbed and dried, and does not disappear from the skin due to sweat or friction.

The component (A) used in the skin cosmetic of the present invention is a crosslinked resin powder having a self-adhesive ability. With the self-adhesive ability of the component (A), when the component (A) is applied to the skin at the same time, 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 by utilizing the excellent water absorption property formed by the component (B), exerts the quick-drying property of sweat, and also exhibits excellent friction resistance.

As the component (A), the crosslinked resin powder having a self-adhesive ability is preferably selected from a crosslinked (meth) acrylate from the viewpoint of water diffusion, friction resistance, and water resistance of a coating film. One or two or more of the resin powder, the silicone elastomer spherical powder, and the urethane resin powder, and more preferably a crosslinked (meth) acrylate resin powder. In the present specification, "(meth) acrylic acid" refers to a concept including both acrylic acid and methacrylic acid.

The crosslinked (meth) acrylate resin powder is a crosslinked resin powder having at least a repeating unit derived from a (meth) acrylate monomer. Examples of such a cross-linked (meth) acrylate resin powder include the resin powder described in Japanese Patent Laid-Open No. 2006-225311. Examples of the monomer other than the (meth) acrylic acid ester monomer include polymerizable vinyl-containing monomers such as methacrylic acid, styrene, and divinylbenzene.

As a (meth) acrylic acid ester monomer, the (meth) acrylic acid alkyl ester whose carbon number of an alkyl group is 1-18 is preferable from a viewpoint of self-adhesion. Specific examples include methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, and 2-ethyl (meth) acrylate Hexyl ester, lauryl (meth) acrylate, stearyl (meth) acrylate, and the like. Among these, from the viewpoint of self-adhesion, it is particularly preferred that the number of carbon atoms of alkyl groups such as butyl (meth) acrylate, lauryl (meth) acrylate, and stearyl (meth) acrylate is 4 ~ 18 alkyl (meth) acrylate. These can also be used in combination of plural kinds. The proportion of the (meth) acrylic acid ester monomer in the total monomer component (also including the following crosslinkable monomers. The same applies hereinafter) is preferably 30 to 98 masses from the viewpoint of uniformity of the composite coating film. %, More preferably 50 to 85% by mass.

Examples of the monomer having a carboxyl group include (meth) acrylic acid, maleic acid, fumaric acid, butenoic acid, itaconic acid, and the like. These can also be used in combination of plural kinds. The ratio of the monomer which has a carboxyl group in a total monomer component is 0.1-30 mass%, More preferably, it is 1-10 mass% from a viewpoint of the water-diffusion property of a coating film.

Part of the carboxyl group contained in the cross-linked (meth) acrylate resin powder may be neutralized. The alkali used for neutralization is preferably an inorganic base such as sodium hydroxide, potassium hydroxide, or ammonia, and an organic base such as an amine, an alkanolamine, or a basic amino acid may also be used. From the viewpoint of water diffusivity of the coating film, the degree of neutralization is preferably 1 to 30%, particularly preferably 1 to 20%. Here, the degree of neutralization refers to the ratio of the mole number of the added base to the mole number of the carboxyl group of the monomer having a carboxyl group as a percentage.

The monomer component preferably contains a crosslinkable monomer having two or more vinyl groups as a crosslinking agent. Examples of such a crosslinkable monomer include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and decyl ethyl Diethylene glycol di (meth) acrylate, pentaethylene glycol di (meth) acrylate, 1,3-butanediol di (meth) acrylate, 1,4-butanediol di (meth) Acrylate, 1,6-hexanediol di (meth) acrylate, glycerol di (meth) acrylate, allyl (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol Tetra (meth) acrylate, diethylene glycol phthalate di (meth) acrylate, caprolactone modified dipentaerythritol hexa (meth) acrylate, caprolactone modified hydroxytrimethylacetate new (Meth) acrylate-based crosslinkable monomers such as pentanediol di (meth) acrylate, (meth) acrylate polyester, (meth) acrylate urethane, divinylbenzene, divinyl Aromatic divinyl monomers such as naphthalene and derivatives thereof. These may be used singly or in combination of two or more. Among these crosslinkable monomers, from the viewpoint of the dry touch of the coating film, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, and three Ethylene glycol di (meth) acrylate, 1,3-butanediol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di ( (Poly) alkylene glycol di (meth) acrylates such as (meth) acrylates, caprolactones modified dipentaerythritol hexa (meth) acrylates, caprolactones modified hydroxytrimethylacetate new Pentylene glycol di (meth) acrylate, (meth) acrylic polyester. It is preferred to use such a crosslinkable monomer in an amount of 3 to 50% by mass based on the total monomer component.

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

The crosslinked resin powder can be subjected to aqueous suspension polymerization, for example, by using a monomer component including the (meth) acrylate monomer, a monomer having a carboxyl group, and a crosslinkable monomer, using a dispersant, a polymerization initiator, and the like. , Emulsion polymerization, seed polymerization, dispersion polymerization and the like. Among these, an aqueous suspension polymerization method is preferred from the viewpoint of easily obtaining a spherical resin powder having a uniform particle diameter.

Examples of the silicone elastomer spherical powder include a crosslinked methyl polysiloxane. Cross-linked type methyl polysiloxane is obtained by adding a small amount of methyl trimethoxysiloxane to dimethoxydimethylsiloxane to polymerize, and having cross-linking of methyltrimethoxysiloxane inside structure. This can be produced by emulsion polymerization, and specific examples include Trefil series (Trefil E506W, Trefil E505C, Trefil E506C, Trefil E505W, etc.) manufactured by Toray Dow Corning Silicone. These may be used alone or in combination, and may be dispersed in various solvents or the like without any problem or mixed with other components in advance. Examples of these include Trefil E507 solution, BY29-129 and BY29-122. Examples of the silicone resin / rubber composite powder include X-52-1139K and X-52-1139G manufactured by Shin-Etsu Chemical Industry Co., Ltd.

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

The average particle diameter of the component (A) is preferably 0.09 μm or more from the viewpoint of good friction resistance, water resistance, and excellent water absorption (water diffusion) of a coating film formed on the skin. It is 0.2 μm or more, more preferably 0.3 μm or more, and further preferably 20 μm or less, more preferably 10 μm or less, still more preferably 5 μm or less, and still more preferably 2.2 μm or less. The range of the specific average particle diameter is preferably 0.09 to 20 μm, more preferably 0.2 to 10 μm, still more preferably 0.3 to 5 μm, and even more preferably 0.3 to 2.2 μm.

In the present invention, the average particle diameter is the average particle diameter when the powder is monodispersed, and it is the volume average particle diameter of the obtained particle diameter measured by a static light scattering method.

Examples of the shape of the component (A) include a spherical shape, a substantially spherical shape, and a granular shape. A spherical shape or a substantially spherical shape is preferable in terms of use feeling 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 preferred in terms of its 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 obtained by a differential scanning calorimetry (DSC) measurement. The glass transition temperature (Tg) of the homopolymer of the alkyl (meth) acrylate as a monomer component is preferably 20 ° C or lower, more preferably 0 ° C or lower, and even more preferably -5 ° C or lower. Examples of such (meth) acrylic acid alkyl esters include butyl acrylate (Tg: -54 ° C), second 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 use of the skin cosmetic of the present invention, component (B) based specific surface area of 150m ² / g or more and the water-absorbing powder 1000m ² / g or less of the ball. In the present invention, component (B) due to the water absorption and a specific surface area of 150m ² / g or more 1000m ² / g or less, and therefore absorb a large amount of sweat, water quickly diffused through the skin is formed on the component (A) and The composite coating film of the component (B) promotes evapotranspiration. The water absorption and specific surface area of 150 m ² / g or more and 1000 m ² / g or less can be obtained by using JIS K 5101-13-1 <General test method for measuring oil absorption of pigments and extender pigments> And confirm. The average oil absorption of the powder is preferably 90 mL / 100 g or more, more preferably 140 mL / 100 g or more, still more preferably 150 mL / 100 g or more, and even more preferably 300 mL / 100 g or more. The upper limit of the oil absorption amount is about 500 mL / 100 g.

The specific surface area is a specific surface area of Brunauer (BET, Brunauer-Emmett-Teller) measured by a gas adsorption method (JIS Z 8830: 2001, Specific surface area measurement method for powders (solids) by gas adsorption).

Component (B) in terms of the specific surface area and the diffusion of water in terms of evapotranspiration, preferably 200m ² / g or more, more preferably 250m ² / g or more, and, preferably 900m ² / g or less, more preferably 800m ² / g or less, and further preferably 700m ² / g or less.

Moreover, it is preferable that the shape of a component (B) is a spherical shape from the point of use feeling and sweat resistance of a coating film.

As the component (B) and the water-absorbing specific surface area of 150m ² / g or more and 1000m ² / g or less of a powder, may include: a porous silicon oxide powder, porous calcium carbonate and porous nylon powder and the like, wherein From the viewpoint of water diffusibility and evapotranspiration, porous silica is more preferred. Here, the porous silica includes hollow porous silica. Examples of commercially available products of porous silica include Sunsphere series (AGC Si-Tech) and Goddball series (Suzuki Oil & Fat Industries).

The average particle diameter of the component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, and still more preferably 5 μm or more, from the viewpoint of excellent water absorption (water diffusivity) of the coating film formed on the skin. Furthermore, it is more preferably 10 μm or more, and from the viewpoints of friction resistance and water resistance of the coating film, it is preferably 50 μm or less, more preferably 30 μm or less, and still more preferably 20 μm or less. The range of the specific average particle diameter is preferably 0.5 to 50 μm, more preferably 3 to 30 μm, still more preferably 5 to 30 μm, and even more preferably 10 to 20 μm.

In the present invention, the average particle diameter is the average particle diameter when the powder is monodispersed, and it is the volume average particle diameter of the obtained particle diameter measured by a static light scattering method.

In the skin cosmetic of the present invention, from the viewpoint of ensuring the water absorption (water diffusion), abrasion resistance, and water resistance of the coating film formed on the skin, the quality of the component (A) relative to the component (B) The ratio (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, even more preferably 0.05 or more and 0.8 or less, and even more preferably 0.10 or more and 0.4 or less. The water absorption of the coating film can be evaluated in the form of water diffusivity of the coating film shown in the following examples.

The component (A) and the component (B) need only be contained in the skin cosmetic of the present invention in the above-mentioned mass ratio, and the content of the component (A) ensures the water absorption (water diffusion) and resistance of the coating film formed on the skin. From the viewpoints of friction and water resistance, the total amount of the cosmetic 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 still more preferably 1.0% by mass or more. Furthermore, it is more preferably 1.5% by mass or more, and still more preferably 2.0% by mass or more. Moreover, it is preferably 20% by mass or less, more preferably 12% by mass or less, still more preferably 10% by mass or less, and still more preferably 5% by mass or less. 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, still more preferably 0.05% by mass or more and 10% by mass or less, and more preferably It is preferably 1.0% by mass or more and 10% by mass or less, more preferably 1.5% by mass or more and 10% by mass or less, and even more preferably 2.0% by mass or more and 10% by mass or less. From the same viewpoint, 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, and even more preferably 10% in the total amount of the cosmetic material. Above mass%. The content is preferably 30% by mass or less, more preferably 18% by mass or less, and even more preferably 15% by mass or less. 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, further preferably 6% by mass or more and 15% by mass or less, and further It is preferably 9 mass% or more and 15 mass% or less.

When the skin cosmetic of the present invention is applied to the skin, a coating film containing a composite of the component (A) and the component (B) is formed on the skin surface, which has excellent water absorption (water diffusion) and shows excellent friction resistance. And water resistance, so it can be used as a cosmetic for evapotranspiration and deodorant cosmetics.

In addition, the composition containing the component (A) and the 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 because it exhibits excellent water absorption (water Diffusibility) and exhibits excellent friction resistance and water resistance, so it can be used as an evapotranspiration promoter containing water containing sweat.

The skin cosmetic of the present invention may contain, in addition to the above-mentioned components, the component (C) bactericide, antiperspirant, powder, oils, waxes, silicones, hydrocarbon oil, higher fatty acid, higher alcohol, synthetic ester oil , Other surfactants, polymer compounds, antioxidants, pigments, emulsion stabilizers, pH adjusters, astringents, preservatives, UV absorbers, chelating agents, humectants, tackifiers, cooling agents, anti-inflammatory agents, Amino acids, vitamins, various plant extracts, etc.

Examples of the fungicides of the component (C) include isopropylmethylphenol, triclosan, benzyl ammonium chloride, benzosonine chloride, halocarban, trichlorosymmetric diphenylurea, and chlorohexyl chloride. Chlorhexidine gluconate, beta glycyrrhetic acid. Among them, isopropylmethylphenol is preferred.

The skin cosmetic of the present invention formulated with a bactericide can be used as a deodorant cosmetic.

Here, as the fungicide of the component (C), isopropyl methylphenol is preferably contained, and the content of the component (C) in the total amount of the cosmetic is preferably in terms of the bactericidal effect and the residual property on the skin. It is 0.01 to 0.2% by mass, more preferably 0.02 to 0.15% by mass, and still more preferably 0.05 to 0.1% by mass.

In addition, the skin cosmetic material of the present invention is preferable in terms of deodorizing effect using excellent bactericidal effect, residual property of sterilizing component on the skin (sustainability of sterilizing and deodorizing effect), and feeling of use (anti-stickiness). In addition to the fungicide of the component (C), it is a nonionic surfactant containing a component selected from the component (D) carboxylic acid or a salt thereof, the component (E) 1,3-butanediol, and the component (F) HLB 10 to 13 One or more of them.

The carboxylic acid or a salt thereof as the component (D) is preferably an organic carboxylic acid or a salt thereof with a carbon number of 1 or more and 8 or less, and more preferably an organic carboxylic acid or a salt thereof with a carbon number of 3 or more and 8 or less.

Specific examples of the carboxylic acid of the component (D) include monocarboxylic acids such as acetic acid, propionic acid, and octanoic acid; malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, Dicarboxylic acids such as butenedioic acid; hydroxycarboxylic acids such as glycolic acid, lactic acid, hydroxyacrylic acid, glyceric acid, malic acid, tartaric acid, and citric acid; aromatic carboxylic acids such as benzoic acid, salicylic acid, and phthalic acid; glutamic acid , Aspartic acid and other acidic amino acids.

Specific examples of the counter ion 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 spermine Cations of basic amino acids such as acids and lysines. The salt is preferably an alkali metal salt, and more preferably a sodium salt.

The component (D) is preferably selected from the group consisting of dicarboxylic acid, hydroxycarboxylic acid, and salts thereof from the viewpoint of sterilizing effect (deodorizing effect) and leaving component (C) on the skin. One or two or more species, more preferably one or two or more species selected from the group consisting of succinic acid, adipic acid, citric acid, and salts thereof.

The content of the component (D) is preferably 0.1 in the total amount of the cosmetic material from the viewpoints of a bactericidal effect (deodorant effect), a point that the component (C) remains on the skin, and a point of long-term stability of the component (C). ~ 3 mass%, more preferably 0.2 to 2.8 mass%, and still more preferably 0.5 to 2.5 mass%.

The 1,3-butanediol of the component (E) has the effect 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 ingredient (E) is preferably from the viewpoints of obtaining a sufficient bactericidal effect, the viewpoint of the residualness of the ingredient (C) on the skin, the long-term storage stability, the feeling of use, and the feeling of cooling. The amount is 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, and even more preferably 1 to 5% by mass.

By formulating the nonionic surfactant of HLB10 to 13 of the component (F), the residual property 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 HLB11-13 in terms of improving the residual property of component (C) and improving long-term storage stability, and more preferably HLB12-13.

In the present invention, the HLB value is an index representing a hydrophile-lipophile balance value. In the present invention, a value calculated by Oda, Teramura, etc. using the following formula is used. The HLB value is the value of each non-ionic surfactant before preparation.

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

The above-mentioned carbon number represents the carbon number of the alkyl group or alkenyl group of the component (F) polyoxyethylene alkyl ether, and from the viewpoint of improving the skin residual property and long-term storage stability of the component (C), it is preferably The carbon number is 10-16, and the carbon number is more preferably 12-14.

From the same viewpoint, a polyoxyethylene alkyl ether having an alkyl group is preferred.

Specific examples include polyoxyethylene lauryl ether (carbon number 12, HLB10-13), polyoxyethylene tetradecyl ether (carbon number 14, HLB10-13), and polyoxyethylene cetyl ether (carbon number 16, HLB10 to 13), polyoxyethylene oleyl ether (carbon number 18, HLB10 to 13), and the like, and preferred ones include polyoxyethylene lauryl ether.

Addition Molar Number of Ethylene Oxide of Component (F) Polyoxyethylene Alkyl Ether From the viewpoint of the residual property of component (C) to the skin and long-term storage stability, it is preferably from 3 to 9, more It is preferably 4 to 8, and more preferably 5 to 7.

The content of the component (F) is preferably from 0.01 to 1% by mass, and more preferably from 0.01 to 1% by mass of the total amount of the cosmetic material from the viewpoint of the residual property of the ingredient (C) on the skin and the viewpoint of long-term storage stability. ~ 0.8 mass%, more preferably 0.01 to 0.5 mass%.

From the viewpoint of further improving the residual property and cooling feeling of the component (C) on the skin, the skin cosmetic of the present invention preferably contains the component (G) with an HLB value of 4 to 7, and is liquid at 25 ° C. Non-ionic surfactant with glycerol.

The so-called liquid at 25 ° C means the viscosity at 25 ° C is less than 100,000 mPa · s.

As the component (G) nonionic surfactant, an alkyl or alkenyl group having a branched carbon number of 8 to 22, a glyceryl ether or ester bond, or an epoxy alkyl bond is preferred. Knot.

The nonionic surfactant as the component (G) is preferably, for example, an alkyl glyceryl ether, a glycerin fatty acid ester, a polyglycerol fatty acid ester, a polyoxyethylene glyceryl ether fatty acid ester, or a polyoxyethylene hydrogenated castor oil. Or polyoxyethylene hydrogenated castor oil fatty acid ester, etc., one or two or more selected. Among these, from the viewpoint of improving the residual property of the component (A) on the skin and the cooling sensation, one or two or more selected from alkyl glyceryl ethers and glycerin fatty acid esters are preferred, and self-alkanes are more preferred. Glyceryl ether is selected from one or more types.

Examples of such a component (G) include isostearyl glyceryl ether (HLB5.4), 2-ethylhexyl glyceryl ether (HLB7), glyceryl monoisostearate (HLB6), and monoisostearate. Stearic acid (degree of polymerization 2) polyglyceryl ester (HLB5.5), polyisoethylene stearate (5) hydrogenated castor oil (HLB4), polyoxyethylene monoisostearate (10) hydrogenated castor Sesame oil (HLB5), polyoxyethylene monoisostearate (15) hydrogenated castor oil (HLB7), polyoxyethylene triisostearate (10) hydrogenated castor oil (HLB4), polyoxy triisostearate Vinyl ester (15) hydrogenated castor oil (HLB5), polyisoethylene triisostearate (20) hydrogenated castor oil (HLB6), polyoxyethylene triisostearate (30), hydrogenated castor oil (HLB7), etc. .

Among these, from the viewpoint of improving the skin-resistance and cooling feeling of the component (C), isostearyl glyceryl ether, 2-ethylhexyl glyceryl ether, and glyceryl monoisostearate are preferred. The ester is preferably isostearyl glyceryl ether from the viewpoint of usability.

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

The dosage form of the skin cosmetic material of the present invention is not particularly limited, and examples thereof include creams, balls, mists, lotions, aerosols, sprays, sticks, and the like. The creams, balls, and mists are used. Agents, sprays or lotions are better in terms of improving antiperspirant and bactericidal effects.

When the skin cosmetic of the present invention is in the form of a cream, it may contain, in addition to the above-mentioned components, an oily component composed of a solid (M) having a melting point of 60 ° C. or higher, and a polymer (I). Ether-modified silicone, component (A) as component (J) and powder other than component (B), antioxidant as component (K), and poly (N-fluorenylalkylene) as component (L) One or more amine) -bonded silicone polymers are selected.

The solid oily component of the component (H) having a melting point of 60 ° C or higher is one having a melting point of 60 ° C or higher, and is solid at normal temperature (25 ° C), preferably one having a melting point of 60 to 110 ° C.

By using such a high melting point oily component, the bactericidal effect can be improved and a smooth feeling of use can be obtained.

In the present invention, the melting point is a value obtained by measuring the quasi-drug raw material specification I (general test method, 70. melting point measurement method 1).

Examples of the oily ingredient used in ordinary skin external preparations include solid oils such as hydrocarbons, waxes, esters, and silicones, auto-physical waxes, vegetable waxes, mineral waxes, synthetic waxes, Choose among these mixtures. For example, paraffin wax, ceresin wax, synthetic hydrocarbon wax, Fischer-Tropsch wax, microcrystalline wax, polyethylene wax, ethylene propylene copolymer, candela wax, beeswax, carnauba wax, and the like.

Among these, hydrocarbons are preferred, and in terms of use feeling, particularly preferred are ground wax (melting point 72-76 ° C), microcrystalline wax (melting point 60-85 ° C), polyethylene wax (melting point 75-105). ℃), paraffin wax (melting point 70 ~ 78 ℃).

The content of the component (H) is preferably from 0.5 to 10% by mass, more preferably from 0.5 to 8% by mass, and even more preferably from 1 to 6% by mass in terms of bactericidal action and usability. .

By using the polyether modified silicone of the component (I), excellent bactericidal effect and good use feeling (non-sticky) can be obtained. As the polyether modified silicone as the component (I), any dimethylpolysiloxane having a polyoxyethylene group or a polyoxypropylene group may be used, and examples thereof include the following formula (1) or Among the formula (2), one of them may be used alone, or two or more of them may be used in combination.

[In formula (1), R ¹ is-(CH ₂ ) ₃ -O- (C ₂ H ₄ O) _p- (C ₃ H ₆ O) _q -A (wherein A represents a hydrogen atom or a carbon number of 1 to 12 alkyl groups, p and q each independently represent an integer of 0 to 50, and p + q ≧ 1), and R ^{2 is} independently methyl or-(CH ₂ ) ₃ -O- (C ₂ H ₄ O) _s- (C ₃ H ₆ O) _t -B (where B represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, s and t each independently represent an integer of 0 to 50, and s + t ≧ 1), m represents an integer from 1 to 2000, and n represents an integer from 0 to 1000. Wherein, 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 (wherein B, s and t have the same meanings as above). ]

[Chemical 2]

[In formula (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 components (I) include KF6011, KF6012, KF6013, KF6015, KF6016, KF6017, and KF6028 (all manufactured by Shin-Etsu Chemical Industry Co., Ltd.).

The content of the component (I) is preferably from 0.01 to 10% by mass, more preferably from 0.05 to 5% by mass, and even more preferably from 0.1 to 3% by mass in terms of bactericidal action and usability. .

By using powders other than the component (A) and the component (B) as the component (J), the bactericidal effect can be improved, and a good feeling of use can be obtained. The powder other than the component (A) and the component (B) as the component (J) may be either the component (J-1) organic powder or the component (J-2) inorganic powder, and may be used alone, or Use in combination of 2 or more types. The shape may be any of a spherical shape, a needle shape, and a plate shape. In addition, it may be treated with alumina, silica, zinc, or the like, or treated with silicone, or the like.

Examples of the organic powder of the component (J-1) include lauric acid lysine, methyl polysiloxane network polymer, polyamide powder, polyester powder, polyethylene powder, and polypropylene powder. , Polystyrene powder, polyurethane, benzoguanamine powder, polymethylbenzoguanamine powder, tetrafluoroethylene powder, and the like.

Examples of the inorganic powder of the component (J-2) include titanium oxide, zirconia, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, and talc. , Mica, kaolin, sericite, muscovite, synthetic mica, phlogopite, red mica, biotite, lithium oxymica, aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, silicic acid Strontium, tungstic acid metal salts, etc.

Among the components (J), one or more selected from methyl polysiloxane network polymers are more preferred. The methyl polysiloxane network polymerization system is commercially available as a raw material for cosmetics and can be used without limitation. Among them, a spherical shape and an average particle diameter in a range of 1.0 to 30.0 μm are preferable, and 4.0 to 15 μm is more preferable. Furthermore, in the present invention, the average particle diameter is the average particle diameter when the powder is monodispersed, and it is the volume average particle diameter of the obtained particle diameter measured by a static light scattering method.

The "methylsilane network polymer" refers to a solid obtained by emulsifying and polymerizing methyltrimethoxysiloxane in an alkaline aqueous solution, and specifically, Tospearl manufactured by GE Toshiba Silicone Co., Ltd. Series (Tospearl 145A, etc.). Among these, in terms of smoothness, particularly preferred is the Tospearl series of methylsiloxane network polymer.

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

As the antioxidant of the component (K), dibutylhydroxytoluene (BHT); vitamin E such as butylhydroxymethoxybenzene, delta tocopherol, and derivatives thereof; thiotaurine, evening primrose extract, β-carotene, catechin compounds, flavonoid compounds, polyphenol compounds, etc. Catechin compounds are useful as green tea extracts and the like. Among them, from the viewpoint of improving the usability, dibutylhydroxytoluene (BHT) or δ tocopherol is preferred. These antioxidants may be used alone or in combination of two or more.

The content of the component (K) is preferably 0.001% by mass or more, and more preferably 0.005% by mass or more in the total amount of the skin cosmetic material from the viewpoint of preventing oxidation, from the viewpoint of reducing the stickiness after coating It is preferable that it is 1 mass% or less, and it is more preferable that it is 0.5 mass% or less.

Examples of the poly (N-fluorenylalkyleneimine) -bonded silicone polymer as the component (L) include at least one silicon atom at the end of a polyorganosiloxane segment or a branched silicon atom. A heteroatom-containing alkylene bond is a silicone polymer containing a poly (N-fluorenylalkyleneimine) having a repeating unit represented by the following formula (3).

(Wherein 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 the silicone-based polymer include poly (N-methylethylideneimine) modified silicone, poly (N-ethylmethylideneimine) modified silicone, Poly (N-propanylethylideneimine) modified silicone, Poly (N-n-octylethylideneimine) modified silicone, Poly (N-n-dodecylethylideneimine) Modified silicone, poly (N-methylethylideneimine) modified silicone, poly (N-ethylethylideneimine) modified silicone, poly (N-ethylidenepropylimine) ) Modified Silicone, Poly (N-Propanylpropylimide) Modified Silicone, Poly (N-n-octylpropylideneimine) Modified Silicone, Poly (N-N-dodecylimide) Alkylene imine), modified silicone, and the like.

The content of the component (L) is from 0.1 to 10% by mass, more preferably from 0.2 to 8% by mass, and more preferably from 0.5 to 6% by mass in terms of dry skin feeling. .

The skin cosmetic of the present invention may be a ball-type cosmetic. Here, the "ball type" refers to a cosmetic material obtained by filling a cosmetic composition with a cosmetic composition, and applying the composition by applying a roller to an application site. Ball-type cosmetics can contain lower alcohols with 2 to 4 carbons as component (M), water-soluble polymers as component (N), sorbitan monooleate as component (O), and sorbitol One or two or more selected from the group consisting of anhydride trioleate, sorbitan monoisostearate, polyoxyethylene oleyl ether, and polyisoethylene glyceryl triisostearate. P) One or two or more kinds of trimethylsiloxysilicic acid and poly (N-fluorenylalkyleneimine) -bonded silicone polymer as the component (L).

The lower alcohol having 2 to 4 carbon atoms as the component (M) is preferably ethanol. The content of the lower alcohol having a carbon number of 2 to 4 in the component (M) is from 20 to 80% by mass, and more preferably from 40 to 60% by mass in terms of feeling of use and coldness.

By containing the water-soluble polymer of the component (N), the residual property of the bactericide 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 sansin, carrageenan, and alginic acid. Examples of the semi-synthetic polysaccharide polymer include modified polysaccharides such as hydroxy cellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose, methyl cellulose, hydroxymethyl cellulose, and cationized cellulose. Examples of synthetic polymers include acrylic polymers such as carbomer (crosslinked polyacrylic acid), polyacrylic acid, sodium polyacrylate, and acrylic acid / alkyl methacrylate copolymers; polyvinylpyrrolidone and polyethylene Alcohols, cationized polyvinylpyrrolidone and the like. Among these, carbomer, an acrylic acid / alkyl methacrylate copolymer, hydroxypropyl cellulose, and sodium carboxymethyl cellulose are preferred.

As commercially available products of Carbomer, polyvinyl 910, polyvinyl 934, poly 940, poly 941, poly 980, poly 981 (the above is Lubrizol Advanced Materials, Inc.) (Manufactured), etc., as commercially available products of acrylic acid / alkyl methacrylate copolymers, may include poly (vinyl chloride) 1382, poly (ethylene vinyl chloride) ETD2020, PEMULEN TR-1, PEMULEN TR-2 (the above is Lubrizol Advanced Materials , Inc.) and the like, as commercially available products of hydroxypropyl cellulose, HPC-M, HPC-H (manufactured by Soda, Japan), etc., and as commercially available products of sodium carboxymethyl cellulose, there may be mentioned Out: CMC Daicel (manufactured by Daicel Chemical Industries, Inc.) and the like.

The water-soluble polymer of the component (N) can be used singly or in combination of two or more kinds. The content of the component (C) on the skin and the feeling of use is preferably 0.01 in the total amount of the cosmetic. More than mass%, more preferably 0.05 mass% or more, more preferably 5 mass% or less, and even more preferably 3 mass% or less. The content of the component (N) is preferably 0.01 to 5% by mass, and more preferably 0.05 to 3% by mass in the total amount of the cosmetic.

With sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, polyoxyethylene oleyl ether, and triisostearate polyoxyethylene containing self-component (O) One or two or more selected from the group consisting of glycerides to improve the residual property and use feeling of the component (C) on the skin.

The content of the component (O) is from the viewpoint of the residual property of the component (C) on the skin and the feeling of use, preferably 0.01 to 3% by mass, and more preferably 0.03 to 1% by mass in the total amount of the cosmetic material. It is more preferably 0.05 to 0.5% by mass.

As the component (P), trimethylsiloxysilicic acid is not limited as long as it is usually used in cosmetics. Any one can be used. It is a compound having a crosslinked structure with a siloxane structure as the main skeleton. It is preferably represented by [(CH ₃ ) ₃ SiO _1/2 ] _x [SiO ₂ ] _Y (X is 1 to 3, Y is 0.5 to 8).

The trimethylsiloxysilicic acid of the component (P) is preferably a weight-average molecular weight of 1,000 to 10,000, and more preferably 2000 to 100,000, in terms of the residual property of the component (C) on the skin and the feeling of use. 9000, and further preferably 3000 to 6000. The properties may be any of a liquid state, a gel state, a paste state, and a solid state at 25 ° C, and a solid state is preferred. From the viewpoint of formulation, a solution or dispersion obtained by diluting with a solvent, or a solution or dispersion obtained by mixing in advance is preferable. As the solvent of the trimethylsilyloxysilicic acid for diluting or dispersing the component (P), preferred are dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, One or more kinds of isododecane are selected, and more preferred are volatile dimethylpolysiloxane and decamethylcyclopentasiloxane. In addition, the so-called volatility refers to those having a flash point of 35 to 90 ° C.

As the commercially available product of the component (P), KF-7312T, KF-7312J, KF-7312K (the above are manufactured by Shin-Etsu Chemical Co., Ltd.) and the like which are previously dissolved in a solvent can be preferably used.

The content of the ingredient (P) is preferably 0.005 to 2% by mass, and more preferably 0.008 to 1% by mass in the total amount of the cosmetic in terms of the residual property of the component (C) on the skin and the feeling of use. It is more preferably 0.01 to 0.5% by mass.

In the case of the ball type, in terms of the residual property of the fungicide (C) on the skin and the feeling of use, the component (L) is a poly (N-fluorenylalkyleneimine) bonded silicone polymer. The content is preferably 0.3 to 5% by mass, more preferably 0.4 to 4% by mass, and still more preferably 0.5 to 3% by mass in the total amount of the cosmetic.

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

The content of the component (Q) is preferably from 0.05 to 2% by mass, more preferably from 0.08 to 1% by mass, and more preferably from 0.1 to 0.5 in terms of the feeling of coldness and long-term storage stability. quality%.

In the case of aerosol, spray or lotion, the content of ingredient (I) is preferably from 0.05 to 2% by mass in the total amount of the cosmetic in terms of smoothness, affinity, and stability over time of the skin. It is more preferably 0.08 to 1.5% by mass, and still more preferably 0.1 to 1% by mass.

Since the cosmetic of the present invention is used in various forms as described above, the component (A), the component (B), and other components can be added and mixed, and if necessary, heated and filled into a container suitable for various forms for manufacturing.

The content of the antiperspirant in the skin cosmetic material of the present invention is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 1 mass from the viewpoint of maintaining a cooling sensation with evaporating sweat. % Or less, preferably not substantially contained. Examples of the antiperspirant include aluminum hydroxide chloride, zinc oxide, zinc phenolsulfonate, and alum.

Regarding the embodiment described above, the present invention further discloses the following composition and method.

<1> A skin cosmetic comprising 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 with self-adhesive ability

(B) the water-absorbing specific surface area of 150m ² / g or more and 1000m ² / g or less of the water-absorbing spherical powder

<2> The skin cosmetic according to <1>, wherein the component (A) is preferably a self-crosslinking (meth) acrylate resin powder, a silicone elastomer spherical powder, and a urethane resin. One kind or two or more kinds of powders are selected, and a cross-linked (meth) acrylate resin powder is more preferable.

<3> The skin cosmetic according to <2>, wherein the crosslinked (meth) acrylate resin powder is preferably a crosslinked resin powder having at least a repeating unit derived from a (meth) acrylate monomer. .

<4> The skin cosmetic according to any one of <1> to <3>, wherein the average particle diameter of the component (A) is preferably 0.09 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 At least μm, preferably at most 20 μm, more preferably at most 10 μm, still more preferably at most 5 μm, still more preferably at most 2.2 μm.

<5><1> to any one of <4> described a skin cosmetic product of, wherein the component (B) is preferably a specific surface area from 150m ² / g or more and 1000m ² / g or less of a porous silicon oxide powder body surface area 150m ² / g or more and 1000m ² / g or less and the specific surface area of the porous calcium carbonate 150m ² / g or more and 1000m ² / g or less of the choice of porous nylon powder least one, more preferably a specific surface area 150 m ² / g or more and 1000 m ² / g or less of porous silica powder.

<6> The skin cosmetic according to any one of <1> to <5>, the average particle diameter of the component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, and still more preferably 5 μm or more, The thickness is more preferably 10 μm or more, more preferably 50 μm or less, more preferably 30 μm or less, and still more preferably 20 μm or less.

<7> The skin cosmetic according to any one of <1> to <6>, wherein the mass ratio (A / B) of the component (A) to the component (B) is preferably 0.01 or more and 2.0 or less, It is more preferably 0.01 or more and 1.0 or less, still more preferably 0.01 or more and 0.8 or less, still more preferably 0.05 or more and 0.8 or less, and still more preferably 0.10 or more and 0.4 or less.

<8> The skin cosmetic according to any one of <1> to <7>, wherein the content of the component (A) is preferably 0.01% by mass or more, and more preferably 0.02% by mass in the total amount of the cosmetic. Above, still more preferably 0.05% by mass or more, still more preferably 1.0% by mass or more, still more preferably 1.5% by mass or more, still more preferably 2.0% by mass or more, and still more preferably 20% by mass or less, more preferably It is 12% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less.

<9> The skin cosmetic according to any one of <1> to <8>, wherein the content of the component (B) is preferably 3% by mass or more, and more preferably 5% by mass in the total amount of the cosmetic. The above is more preferably 6% by mass or more, still more preferably 10% by mass or more, still more preferably 30% by mass or less, still more preferably 18% by mass or less, and still more preferably 15% by mass or less.

<10> The skin cosmetic according to any one of <1> to <7>, which further contains a fungicide as the component (C), and preferably contains isopropylmethylphenol, triclosan, and chlorine Benzylammonium chloride, benzosonine chloride, halocarban, trichlorosymmetric diphenylurea, chlorhexidine hydrochloride, chlorhexidine gluconate, and beta glycyrrhetic acid, preferably isopropyl methyl ester Based phenol.

<11> The skin cosmetic according to <8>, further comprising carboxylic acid or a salt thereof as component (D), 1,3-butanediol as component (E), and component (F) One or two or more of the non-ionic surfactants of HLB10 ~ 13.

<12> The skin cosmetic according to <10> or <11>, wherein the content of component (C) is preferably 0.01 to 0.2% by mass, more preferably 0.02 to 0.15% by mass, and still more preferably 0.05 to 0.1 quality%.

<13> The skin cosmetic according to <11> or <12>, wherein the component (D) carboxylic acid or a salt thereof is a monocarboxylic acid, a dicarboxylic acid, a hydroxycarboxylic acid, an aromatic carboxylic acid, or an acidic amine group One or two or more kinds of acids and their salts are selected.

<14> The skin cosmetic according to any one of <11> to <13>, wherein the content of the component (D) is preferably 0.1 to 3% by mass, and more preferably 0.2 to the total amount of the cosmetic. 2.8% by mass, and more preferably 0.5 to 2.5% by mass.

<15> The skin cosmetic according to any one of <11> to <14>, wherein the content of the component (E) is preferably 0.1 to 10% by mass, more preferably 0.5 to the total amount of the cosmetic. 8 mass%, more preferably 1 to 5 mass%.

<16> The skin cosmetic according to any one of <11> to <15>, wherein the component (F) is a polyoxyethylene alkyl ether or polyoxy group having an alkyl or alkenyl group having 10 to 18 carbon atoms Vinyl alkenyl ether.

<17> The skin cosmetic according to any one of <11> to <16>, wherein the content of the component (F) is preferably 0.01 to 1% by mass, and more preferably 0.01 to the total amount of the cosmetic. 0.8% by mass, and more preferably 0.01 to 0.5% by mass.

<18> The skin cosmetic according to any one of <11> to <17>, which further contains a glyceryl nonionic surfactant having a HLB value of 4 to 7 and a liquid state at 25 ° C Ingredient (G).

<19> The skin cosmetic according to any one of <1> to <18>, which is in the form of a cream.

<20> The skin cosmetic according to <19>, which further contains an oily component as a component (H) having a melting point of 60 ° C or higher, a component (I) polyether modified silicone, and as a component (J ) For components (A) and powders other than component (B), antioxidants as component (K), and poly (N-fluorenylalkyleneimine) -bonded silicone polymers as component (L) One or more of them.

<21> The skin cosmetic according to any one of <1> to <20>, which is in the form of a ball.

<22> The skin cosmetic according to <21>, further comprising a lower alcohol having a carbon number of 2 to 4 as the component (M), a water-soluble polymer as the component (N), and a component as the component (O). Group selection of sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, polyoxyethylene oleyl ether, and triisostearate polyoxyethylene glyceride 1 One or two or more kinds selected from trimethylsiloxysilicic acid as component (P) and poly (N-fluorenylalkyleneimine) bonded silicone polymer as component (L) 1 One or two or more.

<23> The skin cosmetic according to any one of <1> to <22>, which is in the form of a mist, a spray, or a lotion.

<24> The skin cosmetic according to <23>, further comprising polyoxyethylene polyoxypropylene decyl tetradecyl ether as component (Q) and polyether modified silicone as component (I). One or more of them.

<25> A sweat evapotranspiration method including the step of applying the skin cosmetic according to any one of <1> to <24> to the skin.

<26> A method for forming a coating film composed of the component (A) and the component (B) on the surface of the skin, comprising: applying a skin cosmetic according to any one of <1> to <24> Steps for applying to the skin.

<27> An evapotranspiration promoter comprising the following component (A) and component (B), and a mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and 2.5 or less Of the composition.

(A) Crosslinked resin powder with self-adhesive ability

(B) a specific surface area of 150m ² / g or more and 1000m ² / g or less of the water-absorbing spherical powder

<28> The use which uses the skin cosmetics as described in any one of <1> to <24> as a deodorant.

    [Example]    

The following examples further illustrate the present invention in detail.

A method for producing three types of powders (a1, a2, a3) of the crosslinked resin powder having a self-adhesive ability as the component (A) will be described. The characteristics of each powder are to ensure that it is non-sticky and not dry to the skin, and to continuously impart a smooth touch. The average particle diameters are respectively set to: a1 is 0.3 μm, a2 is 2.2 μm, and a3 is 10 μm. Each manufacturing method is shown below.

    Manufacturing example 1 (manufacturing of powder (a1))    

Into a beaker, 85 g of lauryl methacrylate, 15 g of ethylene glycol dimethacrylate, and 2 g of lauryl peroxide were mixed and stirred to dissolve. 400 g of ion-exchanged water in which 0.75 g of N-stearyl-N-methyltaurine (SMT) was dissolved was added thereto, and dispersed with an homogenizer to an average particle diameter of 0.3 μm.

This dispersion was poured into a four-necked flask, and nitrogen was substituted for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath, and polymerization was carried out for 5 hours after the temperature reached 80 ° C., followed by cooling to room temperature. The dispersion of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a1).

    Manufacturing example 2 (manufacturing of powder (a2))    

A beaker was charged with 82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauryl peroxide, and the mixture was stirred and dissolved. 400 g of ion-exchanged water in which 0.75 g of N-stearyl-N-methyltaurine (SMT) was dissolved was added thereto, and dispersed with a homogenizer to an average particle diameter of 2.2 μm.

This dispersion was poured into a four-necked flask, and nitrogen was substituted for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C with an oil bath, and polymerization was carried out for 5 hours after the temperature reached 80 ° C, followed by cooling to room temperature. The dispersion of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a2).

    Manufacturing example 3 (manufacturing of powder (a3))    

A beaker was charged with 82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauryl peroxide, and the mixture was stirred and dissolved. 400 g of ion-exchanged water in which 0.75 g of sodium dodecyl sulfate (SDS) was dissolved was added thereto, and dispersed with a homogenizer to an average particle diameter of 10 μm.

This dispersion was poured into a four-necked flask, and nitrogen was substituted for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath, and polymerization was carried out for 5 hours after the temperature reached 80 ° C., followed by cooling to room temperature. The dispersion of the polymerized particles was freeze-dried, and the particles were recovered to obtain a powder (a3).

    [Examples 1 to 37 and Comparative Examples 1 to 11]    

The samples described in Tables 1 to 5 were produced and evaluated for water diffusion, friction resistance, and water resistance. The results are shown in Tables 1 to 5.

    (Production method)    

The component (A) and the component (B) were measured, ion-exchanged water was added, and the mixture was stirred and mixed with a propeller.

    (Water diffusion test)    

The sample was coated on a glass plate in a size of 4 cm × 4 cm (a coating amount of 0.1 mL / cm ² ), and dried. 0.5 mL of water was added dropwise to the center of the dried coating film, and the diameter of concentric circles after 1 minute diffusion on the coating film was measured. The larger the value, the better the water diffusibility.

    (Friction resistance)    

(1) The sample was coated on a glass slide with 0.1 mL / cm ² and dried. The weight of the dry coating film was measured (weight a).

(2) A load of 20 g was applied to the qualitative filter paper (product name: Whatman 1), and the dry coating film was reciprocated 5 times.

(3) The weight of the dry coating film after rubbing is measured (weight b).

(4) Calculate the friction resistance value (b / a * 100) based on the values obtained in (1) and (3) above. The larger the value, the more excellent the abrasion resistance.

    (Water resistance)    

(1) The sample was coated on a glass slide with 0.1 mL / cm ² and dried. Measurement of the weight of the dry coating film (weight a)

(2) The glass slide was immersed in a beaker containing ion-exchanged water with the dry coating film immersed in water, and allowed to stand for 6 hours.

(3) After taking out the glass slide and drying it, the weight of the dried coating film is measured (weight b).

(4) Calculate the water resistance value (b / a * 100) based on the values obtained in (1) and (3) above. The larger the value, the more excellent the water resistance.

Next, examples of manufacturing the cosmetic of the present invention are shown.

The obtained skin cosmetic has excellent evapotranspiration, does not disappear from the skin due to sweat or friction, and has a long-term evapotranspiration function.

    [Example 38]    

    [Example 39]    

The water diffusion value of the lotion of Example 39 was 16 mm, the friction resistance value was 76%, and the water resistance value was 72%.

    [Example 40]    

The water diffusion value of the cosmetic material of Example 40 was 17 mm, the friction resistance value was 75%, and the water resistance value was 74%.

    [Example 41]    

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

Claims (20)

A skin cosmetic comprising the following components (A) and (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) has self-adhesion ability resin powder is crosslinked; (B) a specific surface area of 150m ² / g or more and the water-absorbing powder 1000m ² / g or less of the ball.     The skin cosmetic according to claim 1, wherein the component (A) is one selected from the group consisting of self-crosslinking (meth) acrylate resin powder, silicone elastomer spherical powder, and urethane resin powder. the above.         The skin cosmetic according to claim 1, wherein the component (B) is one or more selected from porous silica powder, porous nylon powder, and porous calcium carbonate.         The skin cosmetic according to claim 1, wherein the average particle diameter of the component (A) is 0.1 µm or more and 20 µm or less.         The skin cosmetic according to claim 1, wherein the average particle diameter of the component (B) is 0.5 µm or more and 50 µm or less.         The skin cosmetic according to claim 1, wherein the component (A) is a cross-linked (meth) acrylic resin powder.     The skin cosmetic of the requested item 1, wherein the component (B) based specific surface area of 150m ² / g or more and 1000m ² / g or less of silicon oxide powder.     The skin cosmetic according to claim 1, further comprising a bactericide as an ingredient (C).         The skin cosmetic according to claim 8, wherein the fungicide of the component (C) is isopropyl methylphenol, triclosan, benzyl ammonium chloride, benzosonine chloride, halocarban, trichlorosymmetry Diphenylurea, chlorhexidine hydrochloride and chlorhexidine gluconate are more than one selected.         The skin cosmetic according to claim 8, further comprising a carboxylic acid or a salt thereof as the component (D), 1,3-butanediol as the component (E), and HLB 10 to 13 as the component (F). Ionic surfactant.         For example, the skin cosmetic of claim 8, further comprising a glycerol-based nonionic surfactant having a HLB of 4 to 7 as a liquid at 25 ° C as a component (G).         The skin cosmetic according to any one of claims 1 to 11, which is in the form of a cream.         The skin cosmetic according to claim 12, further comprising one or two or more selected from the group consisting of a solid oily component having a melting point of 60 ° C or higher as the component (H) and a polyether as the component (I) Modified silicone; powders other than component (A) and component (B) as component (J); antioxidant as component (K) and poly (N-fluorenylalkyleneimine) as component (L) ) Bonding silicone polymer.         The skin cosmetic according to any one of claims 1 to 11, which is a ball type.         The skin cosmetic according to claim 14, further comprising one or two or more selected from the group consisting of a lower alcohol having a carbon number of 2 to 4 as the component (M); and a water-soluble polymer as the component (N). ; As component (O), selected from sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, polyoxyethylene oleyl ether, and triisostearate polyoxyethylene One or more types of groups consisting of glycerides; poly (N-fluorenylalkyleneimine) -bonded silicone polymers as component (L); and trimethylsilane as component (P) Oxysilicic acid.         The skin cosmetic according to any one of claims 1 to 11, which is in the form of a mist, a spray or a lotion.         The skin cosmetic according to claim 16, further comprising one or two or more components selected from the group consisting of polyoxyethylene polyoxypropylene decyl tetradecyl ether as component (Q); and as component (I) Polyether modified silicone.         A sweat evapotranspiration method comprising the step of applying the skin cosmetic of any one of claims 1 to 11 to the skin.         A method for forming a coating film composed of the component (A) and the component (B) on the surface of the skin, comprising the step of applying the skin cosmetic according to any one of claims 1 to 11 to the skin.     An evapotranspiration accelerator comprising a composition containing the following component (A) and component (B), and a mass ratio (A / B) of the component (A) to the component (B) is 0.01 or more and 2.5 or less ; (A) having the ability to self-adhesive resin powder is crosslinked; (B) a specific surface area of 150m ² / g or more and the water-absorbing powder 1000m ² / g or less of the ball.