WO2018074440A1

WO2018074440A1 - Skin cosmetic

Info

Publication number: WO2018074440A1
Application number: PCT/JP2017/037445
Authority: WO
Inventors: 秀隆岩井; 千紘上山
Original assignee: 花王株式会社
Priority date: 2016-10-18
Filing date: 2017-10-17
Publication date: 2018-04-26
Also published as: MY188658A; CN109862877B; TW201818916A; JP2018065800A; TWI744393B; CN109862877A; JP6775479B2

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 present invention relates to a skin cosmetic, particularly a skin cosmetic containing powder.

Deodorant cosmetics are used as cosmetics to suppress the stickiness and smell of sebum and sweat and to give a refreshing feeling. Such a deodorant cosmetic contains an antiperspirant component and a bactericidal component. As an antiperspirant component, various aluminum compounds having astringent action, zinc paraphenolsulfonate, and the like are used. As cosmetics containing such antiperspirant components, for example, powder solid cosmetics (Patent Document 1) containing powder in addition to antiperspirant components and bactericidal components, silicone gel, polyhydric alcohol fatty acid ester powders , A deodorant stick containing a solidifying agent and a deodorant component (Patent Document 2), an antiperspirant deodorant composition containing an aluminum compound, a phenolic fungicide, an aldehyde perfume, a chelating agent and water (Patent Document 3) Has been.

(Patent Document 1) JP 2010-77094 A (Patent Document 2) JP 2015-3891 (Patent Document 3) JP 2016-113447 A

This invention contains the following component (A) and component (B), and the skin cosmetics whose mass ratio (A / B) of the component (A) with respect to a component (B) is 0.01-2.5. A fee is provided.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing 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 transpiration of sweat, including the step of applying the above skin cosmetic composition to the skin.
Moreover, this invention provides the method of forming the coating film which the component (A) and the component (B) combined on the surface of the skin including the step which applies the said skin cosmetics to skin.
Moreover, this invention contains the following component (A) and component (B), and the mass ratio (A / B) of the component (A) with respect to a component (B) is 0.01-2.5. The present invention provides a transpiration accelerator for water.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less

Detailed Description of the Invention

The conventional antiperspirant component has a problem that a sufficient effect cannot be obtained 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. Moreover, the absorption of sweat by the water-absorbing powder cannot cope with a large amount of sweat during commuting.
Therefore, this invention is providing the skin cosmetics which can respond also to generation | occurrence | production of a large amount of sweat.

Therefore, as a result of various studies on skin cosmetics using water-absorbing 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-absorbing powder. When used in combination with a crosslinked resin powder, the sweat absorbed in the water-absorbing powder quickly evaporates and a large amount of sweat is quickly evaporated, and the water-absorbing powder is also caused by the occurrence of a large amount of sweat. The present invention was completed by finding that it stays on and does not disappear from the skin due to friction.

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 combined 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 in the water-absorbing powder of ² / g or less quickly evaporates, and a large amount of sweat is quickly evaporated, and the water-absorbing powder as component (B) is also generated by the generation of a large amount of sweat. It stays on and does not disappear from the skin due to friction. Therefore, even when a large amount of sweat is generated, the skin cosmetic of the present invention absorbs sweat quickly and dries, and exhibits a long-term sweat transpiration function without disappearing 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 self-adhesive ability. Due to the self-adhesive ability of component (A), when applied to the skin simultaneously with component (B), a composite coating of component (A) and component (B) is formed on the skin surface. The formed composite coating film absorbs sweat due to excellent water absorption by the component (B), exhibits quick drying of sweat, and also exhibits excellent friction resistance.
The crosslinked resin powder having self-adhesive ability of component (A) includes crosslinked (meth) acrylate resin powder, silicone elastomer spherical shape from the viewpoint of water diffusibility, friction resistance and water resistance of the coating film. One type or two or more types selected from powder and urethane resin powder are preferable, and crosslinked (meth) acrylic acid ester resin powder is more preferable. In this specification, “(meth) acryl” is a concept including both acrylic and methacrylic.

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 crosslinked (meth) acrylic ester resin powder include resin powders described in JP-A-2006-225311. Examples of monomers other than (meth) acrylic acid ester monomers include polymerizable vinyl group-containing monomers such as (meth) acrylic acid, styrene, and divinylbenzene.

The (meth) acrylic acid ester monomer is preferably a (meth) acrylic acid alkyl ester having an alkyl group having 1 to 18 carbon atoms from the viewpoint of self-adhesion. Specifically, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate , Stearyl (meth) acrylate and the like. Among these, from the viewpoint of self-adhesiveness, alkyl (meth) acrylates having 4 to 18 carbon atoms in the alkyl group such as butyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, and the like are included. Particularly preferred. You may use these in combination of multiple types. The proportion of the (meth) acrylic acid ester monomer in all monomer components (including the crosslinkable monomer described later, the same shall apply 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, itaconic acid and the like. You may use these in combination of multiple types. The proportion of the monomer having a carboxyl group in all monomer components is preferably from 0.1 to 30% by mass, more preferably from 1 to 10% by mass, from the viewpoint of water diffusibility of the coating film.

Some 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 from 1 to 30%, particularly preferably from 1 to 20%, from the viewpoint of water diffusibility of the coating film. Here, the degree of neutralization represents 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. Such crosslinkable monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, decaethylene glycol di (meth) acrylate, pentadecaethylene glycol di ( (Meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycerin di (meth) acrylate, (meth) Allyl acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, diethylene glycol di (meth) acrylate phthalate, caprolactone-modified dipentaerythritol hexa (meth) Acrylate, caprolactone-modified hydroxypivalate ester neopentyl glycol di (meth) acrylate, polyester (meth) acrylate, urethane (meth) acrylate and other (meth) acrylate crosslinkable monomers, divinylbenzene, divinylnaphthalene and these And aromatic divinyl monomers such as derivatives thereof. 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, and 1,3-butylene glycol are used from the viewpoint of the feel of the dry coating film. (Poly) alkylene glycol di (meth) acrylates such as di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, caprolactone-modified dipentaerythritol hexa (meth) ) Acrylate, caprolactone-modified hydroxypivalate ester neopentyl glycol di (meth) acrylate, and polyester (meth) acrylate are more preferred. These crosslinkable monomers are preferably used in an amount of 3 to 50% by mass with respect to the total monomer components.

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

The cross-linked resin powder is obtained by using, for example, a monomer component including the above (meth) acrylic acid ester monomer, a monomer having a carboxyl group, and a cross-linkable 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 preferred from the viewpoint that it is easy to obtain spherical and uniform resin powder.

Examples of the silicone elastomer spherical powder include cross-linked methylpolysiloxane. The crosslinked methylpolysiloxane is obtained by polymerizing dimethoxydimethylsiloxane with a small amount of methyltrimethoxysiloxane, and has a crosslinked structure of methyltrimethoxysiloxane inside. This can be produced by emulsion polymerization, and specific examples include Trefill series manufactured by Toray Dow Corning Silicone (Trefil E506W, Trefil E505C, Trefil E506C, Trefil E505W, etc.). . These may be used alone or in combination, and those dispersed in various solvents and those previously mixed with other components can be used without any problem. These include, for example, Trefil E507 solution, BY29-129 and BY29-122. In addition, X-52-1139K and X-52-1139G manufactured by Shin-Etsu Chemical Co., Ltd., which are silicone resin / rubber composite powders, may 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 in a shell structure. The polyurethane dispersion is produced from a diisocyanate polymer and a diol monomer, and specific examples include WBR-2101 manufactured by Taisei Fine Chemical Co., Ltd. On the other hand, the core shell type urethane acrylic dispersion includes WEM-200 manufactured by Taisei Fine Chemical Co., Ltd. and DAITSOL U9-40 manufactured by Daito Kasei Co., Ltd.

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 diffusibility) of the coating film formed on the skin. 0.2 μm or more is more preferable, 0.3 μm or more is more 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 even more preferable. A specific range of the average particle diameter is preferably 0.09 to 20 μm, more preferably 0.2 to 10 μm, further preferably 0.3 to 5 μm, and still more preferably 0.3 to 2.2 μm.
In the present invention, the average particle diameter is an average particle diameter when the powder is monodispersed, and is a volume average particle diameter of a particle diameter measured by a static light scattering method.

In addition, examples of the shape of the component (A) include a spherical shape, a substantially spherical shape, and a granular shape, but a spherical shape or a substantially spherical shape is preferable from the viewpoint of feeling of use and the 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 self-adhesive ability. The Tg is more preferably 0 ° C. or less, and further preferably −5 ° C. or less. Here, the glass transition temperature is a temperature measured by differential scanning calorimetry (DSC). The (meth) acrylic acid alkyl ester as the monomer component has a homopolymer glass transition temperature (Tg) of preferably 20 ° C. or lower, more preferably 0 ° C. or lower, and further preferably −5 ° C. or lower. As such (meth) acrylic acid alkyl ester, for example, butyl acrylate (Tg: −54 ° C.), SEC butyl acrylate (Tg: −22 ° C.), 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) and dodecyl methacrylate (Tg: -65 ° C).

The component (B) used in the skin cosmetic of the present invention is a spherical water-absorbing 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) has a water absorption property and a specific surface area of 150 m ² / g or more and 1000 m ² / g or less. Therefore, the component (B) absorbs a large amount of sweat and forms the component (A) and the component ( B) Rapidly diffuses water in the composite coating to promote transpiration. It is confirmed by the oil absorption amount according to 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. A powder 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 is preferable. The upper limit of the oil absorption is about 500 mL / 100 g.
The specific surface area is a BET specific surface area measured according to a gas adsorption method (JIS Z 8830: 2001 specific surface area measurement method 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, 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 preferably 700 m ² / g or less.
In addition, the shape of the component (B) is preferably spherical, from the viewpoint of feeling of use and the sweat resistance of the coating film.

Examples of the powder having water absorption of component (B) and having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less include porous silica powder, porous calcium carbonate, porous nylon powder, etc. From the viewpoint of water diffusibility and transpiration, porous silica is more preferable. Here, the porous silica includes hollow porous silica. Examples of commercially available products of porous silica include the Sunsphere series (AGC S-Tech) and the God Ball series (Suzuki Oil & Fat Co., Ltd.).

The average particle size of the component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, and even more preferably 5 μm or more, from the viewpoint of excellent water absorption (water diffusibility) of the coating film formed on the skin. 10 μm or more is more preferable, and from the viewpoint of the friction resistance and water resistance of the coating film, 50 μm or less is preferable, 30 μm or less is more preferable, and 20 μm or less is more preferable. The specific range of the average particle diameter is preferably 0.5 to 50 μm, more preferably 3 to 30 μm, further preferably 5 to 30 μm, and still more preferably 10 to 20 μm.
In the present invention, the average particle diameter is an average particle diameter when the powder is monodispersed, and is a volume average particle diameter of a particle diameter measured by a 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 diffusibility), friction 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. 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 diffusibility of the coating film shown in the examples described later.

The component (A) and the component (B) may be contained in the skin cosmetic of the present invention at 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 diffusibility, friction resistance, and water resistance, 0.01% by mass or more is preferable in the total amount of the cosmetic, 0.02% by mass or more is more preferable, and 0.05% by mass or more is more preferable. 1.0 mass% or more is still more preferable, 1.5 mass% or more is further more preferable, and 2.0 mass% or more is further more preferable. Moreover, 20 mass% or less is preferable, 12 mass% or less is more preferable, 10 mass% or less is further more preferable, and 5 mass% or less is still 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 more is more preferable, 1.0 mass% or more and 10 mass% or less are further more preferable, 1.5 mass% or more and 10 mass% or less are further more preferable, and 2.0 mass% or more and 10 mass% or less are preferable. Even more preferred. 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, and further more preferably 10% by mass or more in the total amount of the cosmetic. preferable. Moreover, 30 mass% or less is preferable, 18 mass% or less is more preferable, and 15 mass% or less is further more 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. 9 mass% or more and 15 mass% or less are still more preferable.

When applied to the skin, the skin cosmetic of the present invention forms a coating film composed of a composite of component (A) and component (B) on the skin surface, has excellent water absorption (water diffusibility), and is excellent It is particularly useful as a cosmetic for transpiration of sweat and a deodorant cosmetic because it exhibits high friction resistance and water resistance.
In addition, the 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 to 2.5 is excellent. Since it exhibits water absorption (water diffusibility) and excellent friction resistance and water resistance, it is useful as a transpiration accelerator for water containing sweat.

The skin cosmetic of the present invention includes the component (C) bactericide, antiperspirant, powder, fats and oils, waxes, silicones, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils in addition to the above components. , Other surfactants, polymer compounds, antioxidants, dyes, emulsion stabilizers, pH adjusters, astringents, preservatives, UV absorbers, chelating agents, moisturizers, thickeners, cooling agents, anti-inflammatory Agents, amino acids, vitamins, various plant extracts, and the like.

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

Here, as the fungicide of component (C), it is preferable to contain isopropylmethylphenol, and the content of component (C) in the total amount of the cosmetic is 0.01 from the viewpoint of bactericidal effect and persistence on the skin. Is preferably 0.2 to 0.2% by mass, more preferably 0.02 to 0.15% by mass, and even more preferably 0.05 to 0.1% by mass.

In addition to the fungicide of component (C), the skin cosmetic of the present invention comprises component (D) carboxylic acid or a salt thereof, component (E) 1,3-butylene glycol, and component (F) HLB 10-13. Contains one or more selected from nonionic surfactants of the above, deodorizing effect due to excellent bactericidal effect, persistence of bactericidal components on the skin (sterilization, persistence of deodorizing effect), usability ( It is preferable in terms of prevention of stickiness).

The carboxylic acid of component (D) or a salt thereof is preferably an organic carboxylic acid having 1 to 8 carbon atoms or a salt thereof, more preferably an organic carboxylic acid having 3 to 8 carbon atoms or a salt thereof.
Specific examples of the carboxylic acid of component (D) include monocarboxylic acids such as acetic acid, propionic acid and caprylic acid; dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid and fumaric acid; glycolic acid And hydroxycarboxylic acids such as 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; and acidic amino acids such as glutamic acid and aspartic acid.
Specific examples of 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 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.
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 (deodorizing effect) and leaving component (C) on the skin. More preferably, it is 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 (deodorizing effect), the component (C) remaining on the skin, and the long-term stability of the component (C). % By mass is preferable, 0.2 to 2.8% by mass is more preferable, and 0.5 to 2.5% by mass is further preferable.

The component (E) 1,3-butylene glycol 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 component (E) is 0 in the total amount of the cosmetic from the viewpoint of obtaining a sufficient bactericidal effect, the persistence of the component (C) on the skin, the long-term storage stability, the feeling of use, and the cool feeling. It is preferably 1 to 10% by mass, more preferably 0.5 to 8% by mass, and still more preferably 1 to 5% by mass.

By incorporating the nonionic surfactant of HLB 10 to 13 of component (F), the persistence of component (C) on the skin is improved and the long-term storage stability of component (C) is improved. Component (F) is more preferably HLB 11 to 13, more preferably HLB 12 to 13, from the viewpoint of improving the persistence of component (C) and improving long-term storage stability.
In the present invention, the HLB value is an index indicating a hydrophilic-lipophilic balance. In the present invention, a value calculated by the following equation by Oda and Teramura et al. Is used. The HLB value is a value of each nonionic surfactant before blending.

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

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

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

The liquid state 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 bonded to the glyceryl group with an ether bond or an ester bond or via an alkylene oxide group. What is doing is preferable.

Examples of the nonionic surfactant of component (G) include alkyl glyceryl ether, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene glyceryl ether fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid. One or more selected from esters and the like are preferred. Among these, from the viewpoint of improving the persistence of the component (A) on the skin and cooling sensation, one or more selected from alkyl glyceryl ethers and glycerin fatty acid esters are preferable, and further one selected from alkyl glyceryl ethers. Or 2 or more types are preferable.

Examples of such component (G) include isostearyl glyceryl ether (HLB5.4), 2-ethylhexyl glyceryl ether (HLB7), glyceryl monoisostearate (HLB6), monoisostearic acid (degree of polymerization 2) polyglyceryl (HLB5). .5), polyoxyethylene monoisostearate (5) hydrogenated castor oil (HLB4), polyoxyethylene monoisostearate (10) hydrogenated castor oil (HLB5), polyoxyethylene monoisostearate (15) hydrogenated castor oil (HLB7) ), Polyoxyethylene triisostearate (10) hydrogenated castor oil (HLB4), polyoxyethylene triisostearate (15) hydrogenated castor oil (HLB5), polyoxyethylene triisostearate (20) hydrogenated castor oil (H B6), triisostearate, polyoxyethylene (30) hydrogenated castor oil (HLB7) and the like.
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 cooling sensation. From the viewpoint of feeling of use, isostearyl glyceryl is preferable. 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, the content is 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 of the present invention is not particularly limited, and examples thereof include creams, roll-on types, mists, lotions, aerosols, sprays, sticks, etc., but cream forms, roll-on types, mists, sprays or lotions. It is more preferable to adopt the form from the viewpoint of enhancing the antiperspirant action and the bactericidal action.

When the skin cosmetic of the present invention is in the form of a cream, in addition to the above components, 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, a component (J ) As a powder other than component (A) and component (B), as component (K) an antioxidant and as component (L) one or two selected from poly (N-acylalkylenimine) -bonded silicone polymers The above can be contained.

The solid oily component having a melting point of component (H) of 60 ° C. or higher is a solid oil component having a melting point of 60 ° C. or higher and a solid at room temperature (25 ° C.), preferably having 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 this invention, melting | fusing point is a thing measured by the quasi-drug raw material specification I (General test method, 70. Melting | fusing point measuring method 1st method).

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

By using the polyether-modified silicone of component (I), an excellent bactericidal action and a good feeling of use (non-stickiness) can be obtained. The polyether-modified silicone of 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). Of these, one kind may be used alone, or two or more kinds may be used in combination.

[In the formula (1), R ¹ represents — (CH ₂ ) ₃ —O— (C ₂ H ₄ O) _p — (C ₃ H ₆ O) _q —A (where A represents a hydrogen atom or a carbon number) Each represents an alkyl group of 1 to 12, p and q each independently represents an integer of 0 to 50, and p + q ≧ 1, and R ² each independently represents a methyl group 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, and s and t are Each independently represents an integer of 0 to 50, and s + t ≧ 1), m represents an integer of 1 to 2000, and n represents 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 (where B, s And t are as defined above. ]

[In the formula (2), r represents an integer of 1 to 20, and x, y and z each independently represents 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 Co., Ltd.).

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

By using powders other than the component (A) and the component (B) as the component (J), the bactericidal action is improved and a good feeling of use is obtained. As a powder other than the component (A) and the component (B) as the component (J), either the component (J-1) organic powder or the component (J-2) inorganic powder may be used. Alternatively, two or more kinds may be used in combination. Further, the shape may be any of a spherical shape, a needle shape, and a plate shape. Further, it may be treated with alumina, silica, zinc or the like, or treated with silicone or the like.

The organic powder of the above component (J-1) includes lauroyl lysine, methylpolysiloxane network polymer, polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, polyurethane, benzoguanamine powder, polymethylbenzoguanamine powder, tetra Examples thereof include fluoroethylene powder.

Examples of the inorganic powder of the component (J-2) include titanium oxide, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, mica, Kaolin, sericite, muscovite, synthetic mica, phlogopite, saucite, biotite, lithia mica, aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, strontium silicate, tungstic acid A metal salt etc. are mentioned.

Among the components (J), it is more preferable to contain one or more selected from methylpolysiloxane network polymers. The methylpolysiloxane network polymer is already commercially available as a cosmetic raw material 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 diameter is an average particle diameter when the powder is monodispersed, and is a volume average particle diameter of the particle diameter measured by a static light scattering method.

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

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

Component (K) antioxidants include dibutylhydroxytoluene (BHT); vitamin E such as butylhydroxyanisole and δtocopherol, and derivatives thereof; thiotaurine, evening primrose extract, β-carotene, catechin compounds, flavonoid compounds, polyphenol compounds Etc. can be illustrated. The catechin compound can be used as a green tea extract or the like. Among these, dibutylhydroxytoluene (BHT) or δtocopherol is preferable from the viewpoint of improving the feeling in use. These antioxidants may be used individually by 1 type, and may combine 2 or more types.

Content of component (K) is 0.001 mass% or more in skin cosmetics whole quantity from an antioxidant viewpoint, especially 0.005 mass% or more, and 1 mass% from a viewpoint of the reduction of the stickiness after application | coating. In the following, it is particularly preferable to contain 0.5% by mass or less.

The poly (N-acylalkylenimine) -bonded silicone-based polymer of component (L) is represented by the following formula (I) via an alkylene group containing a hetero atom at least one of the terminal or side chain silicon atoms of the organopolysiloxane segment. Examples thereof include silicone-based polymers formed by bonding poly (N-acylalkylenimines) composed of repeating units represented by 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 such silicone polymers include poly (N-formylethyleneimine) modified silicone, poly (N-acetylethyleneimine) modified silicone, poly (N-propionylethyleneimine) modified silicone, 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 from 0.1 to 10% by mass, more preferably from 0.2 to 8% by mass, and more preferably from 0.5 to 6% in the total amount of the skin cosmetic from the viewpoint of a smooth use feeling. More preferred is mass%.

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

As the lower alcohol having 2 to 4 carbon atoms of the component (M), ethanol is preferable. 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 viewpoints of feeling of use and cooling.

By including the water-soluble polymer of component (N), the persistence of the disinfectant of component (C) on the skin can be improved. As the water-soluble polymer, any of natural polymers, semi-synthetic polymers, and synthetic polymers can be used.
Examples of natural polymers include xanthan gum, carrageenan, alginic acid and the like. Examples of semi-synthetic polysaccharide polymers include modified polysaccharides such as hydroxycellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, and cationized cellulose. Synthetic polymers include carbomers (cross-linked polyacrylic acid), polyacrylic acid, sodium polyacrylate, acrylic polymers such as acrylic acid / alkyl methacrylate copolymers; polyvinyl pyrrolidone, polyvinyl alcohol, cationized polyvinyl pyrrolidone, and the like. It is done. Of these, carbomer, acrylic acid / alkyl methacrylate copolymer, hydroxypropylcellulose, and sodium carboxymethylcellulose are preferred.

Examples of commercially available carbomers include carbopol 910, carbopol 934, carbopol 940, carbopol 941, carbopol 980, carbopol 981 (and above, manufactured by Lubrizol Advanced Materials, Inc.), etc., and acrylic acid / methacrylic acid. Examples of commercially available acid alkyl copolymers include Carbopol 1382, Carbopol ETD2020, PEMULEN TR-1, and PEMULEN TR-2 (from Lubrizol Advanced Materials, Inc.). HPC-M, HPC-H (manufactured by Nippon Soda Co., Ltd.), etc., and commercially available products of sodium carboxymethylcellulose include CMC Daicel (Daicel Chemical Industries). Company, Ltd.), and the like.

The water-soluble polymer of the component (N) can be used alone or in combination of two or more, 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. Furthermore, 0.01 mass% or more is preferable, 0.05 mass% or more is more preferable, 5 mass% or less is preferable, and 3 mass% or less is more preferable. Further, 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 Thereby, 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 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. Is more preferable, and 0.05 to 0.5% by mass is even more preferable.

The trimethylsiloxysilicic acid of component (P) is not limited as long as it is usually used in cosmetics, and any compound can be used, and is a compound having a crosslinked structure with a siloxane structure as the main skeleton, [(CH _{_{_{_{3) 3 SiO 1/2] X [}}}} SiO 2] represented by the _Y (X is 1 ~ 3, Y is 0.5 to 8) are preferred.
The trimethylsiloxysilicic acid component (P) preferably has a weight average molecular weight of 1000 to 10,000, more preferably 2000 to 9000, from the viewpoint of the persistence of the component (C) on the skin and the feeling of use. Those of 3000 to 6000 are more preferred. Further, the property may be any of liquid, gum, paste, solid, etc. at 25 ° C., but a solid is preferable. Further, from the viewpoint of compoundability, it is preferably a solution or dispersion diluted with a solvent, or a solution or dispersion obtained by mixing in advance. The solvent for diluting or dispersing the trimethylsiloxysilicic acid of component (P) is preferably one or more selected from dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane, and is volatile. More preferred are dimethylpolysiloxane and decamethylcyclopentasiloxane. Volatile means that it has a flash point of 35 to 90 ° C.
As the commercially available component (P), KF-7312T, KF-7312J, KF-7312K (manufactured by Shin-Etsu Chemical Co., Ltd.) or 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, and preferably 0.008 to 1% by mass 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. Is more preferable, and 0.01 to 0.5% by mass is even more preferable.

Component (L) Poly (N-acylalkyleneimine) -bonded silicone polymer content is the total amount of cosmetics, in the case of roll-on type, in view of the persistence of component (C) fungicide 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, in addition to the above components, as component (Q), polyoxyethylene polyoxypropylene decyl tetradecyl ether (eg PPG-6 decyl tetradeces) -30), and one or more selected from component (I) polyether-modified silicones.

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

In the case of mist, spray or lotion, the content of component (I) is preferably 0.05 to 2% by mass in the total amount of the cosmetic from the viewpoint of elongation to the skin, familiarity, and stability over time. 0.08 to 1.5% by mass is more preferable, and 0.1 to 1% by mass is even more 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, heated as necessary, 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, and still more preferably 1 from the viewpoint of maintaining a refreshing feeling accompanying sweat transpiration. It is preferable that it is not more than mass% and does not contain substantially. Examples of the antiperspirant include chlorohydroxyaluminum, zinc oxide, zinc phenolsulfonate, and baked alum.
In relation to the above-described embodiments, the present invention further discloses the following compositions and methods.

<1> A skin cosmetic comprising the following component (A) and component (B), wherein the mass ratio (A / B) of component (A) to component (B) is 0.01 or more and 2.5 or less. .
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing powder <2> component (A) having a water-absorbing specific surface area of 150 m ² / g to 1000 m ² / g is preferably One or more kinds selected from crosslinked (meth) acrylate resin powder, silicone elastomer spherical powder and urethane resin powder, more preferably crosslinked (meth) acrylate resin powder <1 > Skin cosmetics as described.
<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 average particle size of the component (A) is preferably 0.09 μm or more, more preferably 0.2 μm or more, further 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>, more preferably 5 μm or less, and further 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 types selected from 150 m ² / g or more and 1000 m ² / g or less of porous nylon powder, 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>.
The average particle size of <6> component (B) is preferably 0.5 μm or more, more preferably 3 μm or more, further preferably 5 μm or more, further preferably 10 μm or more, and preferably 50 μm or less, more preferably 30 μm. The skin cosmetic according to any one of <1> to <5>, 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. Any one 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. Skin cosmetics according to 1.
The content of <8> component (A) is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.05% by mass or more, and more preferably in the total amount of the cosmetic. 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>, more preferably 10% by mass or less, and further preferably 5% by mass or less.
The content of the <9> component (B) is preferably 3% by mass or more, more preferably 5% by mass or more, further preferably 6% by mass or more, and further 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 still more preferably 15% by mass or less.
<10> Further, the component (C) is a fungicide, preferably selected from isopropylmethylphenol, 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>, further comprising a bactericidal agent, more preferably isopropylmethylphenol.
<11> Further, one or two selected from carboxylic acids or salts thereof as component (D), 1,3-butylene glycol as component (E), and nonionic surfactants of HLB 10 to 13 as component (F) The skin cosmetic according to <8>, containing the above.
The content of <12> 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% by mass. A skin cosmetic according to <10> or <11>.
<13> Component (D) Carboxylic acid or 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 skin cosmetics as described in <12>.
The content of <14> component (D) is preferably 0.1 to 3% by mass, more preferably 0.2 to 2.8% by mass, and still more preferably 0.5 to 2.5% by mass 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, and further preferably 1 to 5% by mass in the total amount of the cosmetic <11 > The skin cosmetic according to any one of <14>.
<16> The skin makeup according to any one of <11> to <15>, wherein the component (F) is a polyoxyethylene alkyl ether or polyoxyethylene alkenyl ether having an alkyl group or alkenyl group having 10 to 18 carbon atoms Fee.
The content of <17> component (F) is preferably 0.01 to 1% by mass, more preferably 0.01 to 0.8% by mass, and still more preferably 0.01 to 0.5% by mass in the total amount of the cosmetic. The skin cosmetic according to any one of <11> to <16>, wherein the skin cosmetic is% by mass.
<18> The skin makeup according to any one of <11> to <17>, further comprising a nonionic surfactant having an HLB value of 4 to 7 as a component (G) and having a liquid glyceryl group at 25 ° C. Fee.
<19> The skin cosmetic according to any one of <1> to <18>, which is in a cream form.
<20> Further, as a component (H), a solid oily component having a melting point of 60 ° C. or higher, a component (I) a polyether-modified silicone, a component (J) as a powder other than the components (A) and (B), and a component <19> The skin cosmetic according to <19>, comprising one or more selected from an antioxidant as (K) and a poly (N-acylalkylenimine) -bonded silicone polymer as component (L).
<21> The skin cosmetic according to any one of <1> to <20>, which is a roll-on type.
<22> Further, the component (M) is a lower alcohol having 2 to 4 carbon atoms, the component (N) is a water-soluble polymer, the component (O) is sorbitan monooleate, sorbitan trioleate, sorbitan monoisostearate, poly One or more selected from the group consisting of oxyethylene oleyl ether and polyoxyethylene glyceryl triisostearate, trimethylsiloxysilicic acid as component (P), and poly (N-acylalkylenimine) bond as component (L) The skin cosmetic according to <21>, containing one or more selected from silicone polymers.
<23> The skin cosmetic according to any one of <1> to <22>, which is in the form of a mist, spray or lotion.
<24> The skin cosmetic according to <23>, further comprising one or more selected from polyoxyethylene polyoxypropylene decyl tetradecyl ether as component (Q) and polyether-modified silicone as component (I) .
<25> A sweat transpiration method comprising the step of applying the skin cosmetic according to any one of <1> to <24> to the skin.
<26> A coating film in which component (A) and component (B) are combined is formed on the surface of the skin, including 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), wherein the mass ratio (A / B) of component (A) to component (B) is 0.01 or more and 2.5 or less. Water transpiration promoter.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing powder having a specific surface area of 150 m ² / g or more and 1000 m ² / g or less <28><1> to <24> as deodorant Use of the skin cosmetic according to any one of the above.

Next, the present invention will be described in more detail with reference to examples.

Component (A) A method for producing three kinds 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 keeps the skin non-sticky and gives a smooth feel, and the average particle size is 0.3 μm for a1 and 2.2 μm for a2 respectively. , A3 is set to 10 μm. The individual production methods are shown below.

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

Production Example 2 (Production 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 lauroyl peroxide, and dissolved by 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 dispersed with a homomixer until the average particle size was 2.2 μm.
The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was lyophilized and the particles were collected to obtain a powder (a2).

Production Example 3 (Production 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 lauroyl peroxide, and dissolved by stirring. To this, 400 g of ion-exchanged water in which 0.75 g of sodium dodecyl sulfate (SDS) was dissolved was added and dispersed with a homomixer until the average particle size became 10 μm.
The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was lyophilized and the particles were collected to obtain a powder (a3).

Examples 1 to 37 and Comparative Examples 1 to 11
Samples listed in Tables 1 to 5 were produced, and water diffusibility, friction resistance and water resistance were evaluated. The results are shown in Tables 1-5.

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

(Water diffusion test)
A sample is apply | coated to the magnitude | size of 4 cm x 4 cm on a glass plate (application quantity 0.1mL / cm < ² >), and it is made to dry. 0.5 mL of water was dropped into the center of the dried 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 diffusibility.

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

(water resistant)
(1) Apply the sample to a slide glass plate at 0.1 mL / cm ² and dry. Measure the weight of the dried coating (weight a)
(2) The slide glass plate is immersed in a beaker containing ion-exchanged water so that the dried coating film is immersed in water, and is left to stand for 6 hours.
(3) The slide glass plate is taken out and dried, and then 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 (1) and (3) above. The greater the value, the better the water resistance.

Next, the manufacture example of this invention cosmetics is shown.
The obtained skin cosmetic was excellent in sweat transpiration and excellent in sweat transpiration 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 diffusibility value of 16 mm, a friction resistance value of 76%, and a water resistance value of 72%.

Example 40

The cosmetic 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 material 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

A skin cosmetic comprising the following component (A) and component (B), wherein the mass ratio (A / B) of component (A) to component (B) is from 0.01 to 2.5.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing 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 claim 1, wherein the component (A) is at least one selected from a crosslinked (meth) acrylic ester resin powder, a silicone elastomer spherical powder and a urethane resin powder.
The skin cosmetic according to claim 1 or 2, wherein the component (B) is at least one selected from porous silica powder, porous nylon powder and porous calcium carbonate.
The skin cosmetic according to any one of claims 1 to 3, wherein the average particle size of the component (A) is from 0.1 µm to 20 µm.
The skin cosmetic according to any one of claims 1 to 4, wherein the component (B) has an average particle size of 0.5 µm or more and 50 µm or less.
The skin cosmetic according to any one of claims 1 to 5, wherein the component (A) is a crosslinked (meth) acrylic acid resin powder.
The skin cosmetic according to any one of claims 1 to 6, wherein the component (B) is a 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 7, further comprising a bactericidal agent as component (C).
9. The fungicide of component (C) is at least one selected from isopropylmethylphenol, triclosan, benzalkonium chloride, benzethonium chloride, halocarban, trichlorocarbanilide, chlorhexidine hydrochloride and chlorhexidine gluconate. Skin cosmetics.
The skin according to claim 8 or 9, further comprising carboxylic acid or a salt thereof as component (D), 1,3-butylene glycol as component (E), and a nonionic surfactant of HLB 10 to 13 as component (F). Cosmetics.
The skin cosmetic according to any one of claims 8 to 10, further comprising a nonionic surfactant having an HLB of 4 to 7 as a component (G) and having a liquid glyceryl group at 25 ° C.
The skin cosmetic according to any one of claims 1 to 11, which is in a cream form.
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 components (A) and (B), and the component (K). The skin cosmetic according to claim 12, comprising one or more selected from an antioxidant and a poly (N-acylalkylenimine) -bonded silicone polymer as component (L).
The skin cosmetic according to any one of claims 1 to 11, which is a roll-on type.
Furthermore, the lower alcohol having 2 to 4 carbon atoms as the component (M), the water-soluble polymer as the component (N), the sorbitan monooleate, the sorbitan trioleate, the sorbitan monoisostearate, the polyoxyethylene oleyl as the component (O) One or more selected from the group consisting of ether and polyoxyethylene glyceryl triisostearate, a poly (N-acylalkylenimine) -bonded silicone-based polymer as component (L), and trimethylsiloxysilicate as component (P) The skin cosmetic according to claim 14, comprising one or more selected from the group consisting of:
The skin cosmetic according to any one of claims 1 to 11, which is in the form of mist, spray or lotion.
The skin cosmetic according to claim 16, further comprising one or more selected from polyoxyethylene polyoxypropylene decyl tetradecyl ether as component (Q) and polyether-modified silicone as component (I).
A sweat transpiration method comprising 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 combined on the surface of the skin, including a step of applying the skin cosmetic according to any one of claims 1 to 17 to the skin.
Water comprising a composition containing the following component (A) and component (B), wherein the mass ratio (A / B) of component (A) to component (B) is from 0.01 to 2.5: Transpiration promoter.
(A) Crosslinked resin powder having self-adhesive ability (B) Spherical water-absorbing powder having a specific surface area of 150 m 2 / g or more and 1000 m 2 / g or less