JP2011020966A - Oil in water type emulsified skin cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil in water type emulsified skin cosmetic excellent in the improving effects of firmness and wrinkles of skin, also having a good spread on the skin and not causing stickiness. <P>SOLUTION: This oil in water type emulsified skin cosmetic includes (a) a homopolymer, copolymer, cross polymer or their mixture containing 1 kind or ≥2 kinds selected from 2-acrylamide-2-methylpropanesulfonic acid, acrylic acid and its derivatives as constituting units, (b) a non-emulsifiable crosslinking type silicone and (c) spherical silicone fine particles. The skin cosmetic preferably further contains a hydrophobic association thickening agent (component (d)) and/or spherical silica (component (e)). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an oil-in-water skin cosmetic for improving skin crevices and wrinkles. More specifically, by combining a specific thickener component with a specific film agent and powder, the skin cosmetics are excellent in skin crease / wrinkle improvement, have good skin spread and do not cause stickiness. About.

  Conventionally, moisturizers and film agents are blended in skin cosmetics for the purpose of improving skin creases and wrinkles. Moisturizers can replenish moisture on the surface and inside of the skin and give it a beam, but in order to obtain a sufficient effect, it must be formulated in a relatively large amount, and the feeling of use will be sticky and heavy. It was one of the causes. On the other hand, the film agent gives an appropriate level of tension and tension to the skin by the contraction force of film formation.

For example, Patent Document 1 discloses a pack cosmetic containing a film-forming polymer combining carboxyvinyl polymer and carrageenan and a moisturizing agent, and a pack cosmetic having excellent moisturizing properties and easy washing is obtained. It is said that
Patent Document 2 discloses a cosmetic comprising a combination of a water-soluble polymer such as hydroxyethyl cellulose and a hydrophobic film-forming polymer dispersed in water with a fine particle spherical silica and a humectant such as glycerin. In addition to providing a feeling of tension and tension on the skin, it is said that the film is difficult to peel off and has good washability.
However, the conventional cosmetics have problems such as poor spread on the skin or stickiness after application, and the effect of improving skin creases and wrinkles has not been sufficient.

JP 2000-143477 A JP 2004-149463 A

  The present invention has been made in view of the above-mentioned drawbacks of the prior art, and the object thereof is an oil-in-water emulsified skin cosmetic that is excellent in skin crease / wrinkle improvement effect, has good skin spread and does not cause stickiness. Is to provide.

  As a result of intensive studies by the present inventor, as a thickener, a polymer containing 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid and / or a derivative thereof is used, and a non-emulsifying property is used as a beam and wrinkle improving component. By blending cross-linked silicone and spherical silicone fine particles, an oil-in-water cosmetic can be obtained that is excellent in skin crease / wrinkle improvement, non-sticky, and has good skin spread. As a result, the present invention has been completed.

That is, the present invention includes the following components (a) to (c):
(A) a homopolymer, copolymer, cross polymer, or a mixture thereof containing one or more selected from 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid and derivatives thereof as a constituent unit;
An oil-in-water emulsified skin cosmetic containing (b) a non-emulsifying cross-linked silicone and (c) spherical silicone fine particles is provided.

In the skin cosmetic of the present invention, the mass ratio of the component (c) spherical silicone particles to the component (b) non-emulsifiable crosslinked silicone (component (c) / component (b)) is 1.2-2. It is preferable to be within the range of 0.0.
In addition to the components (a) to (c), the skin cosmetic of the present invention preferably further contains (d) a hydrophobic associating agent and / or (e) a spherical silica.

  The oil-in-water type skin cosmetic of the present invention is excellent in the effect of improving skin creases and wrinkles, is non-sticky, and has good spread on the skin.

  The component (a) blended in the skin cosmetic of the present invention is one or two selected from 2-acrylamido-2-methylpropanesulfonic acid (hereinafter referred to as “AMPS”), acrylic acid and derivatives thereof. Is a homopolymer, copolymer, cross polymer, or a mixture thereof. Specific examples of the polymer used as component (a) include, for example, vinylpyrrolidone / AMPS copolymer, dimethylacrylamide / AMPS copolymer, acrylic acid amide / AMPS copolymer, and dimethyl cross-linked with methylenebisacrylamide. Acrylamide / AMPS crosspolymer, polyacrylate amide and sodium acrylate mixture, sodium acrylate / AMPS copolymer, hydroxyethyl acrylate / AMPS copolymer, ammonium polyacrylate, polyacrylate amide / acrylic acid Examples thereof include ammonium copolymers and acrylamide / sodium acrylate copolymers, and one or a mixture of two or more thereof can be used.

  A commercial item can also be used as it is as a component (a) in this invention. Specific examples include AMPS homopolymers such as Hostacerin AMPS (manufactured by Clariant), Simulgel 800 (manufactured by SEPIC), vinylpyrrolidone / AMPS copolymers as Aristoflex AVC (manufactured by Clariant), acrylic amide. / AMPS copolymers include SEPIGEL 305 (manufactured by SEPIC), SIMLGEL 600 (manufactured by SEPIC), dimethylacrylamide / AMPS crosspolymers include Supolymer G-1 (manufactured by Toho Chemical Co., Ltd.), polyacrylic As a mixture of acid amide and sodium polyacrylate, SEPIGEL 501 (manufactured by SEPIC), sodium acrylate / AMPS copolymer as SIMULGEL EG (manufactured by SEPIC), hydroxyethyl acrylate / AMPS copolymer as SIMULGEL NS (manufactured by SEPIC), SIMULGEL FL (manufactured by SEPIC), SEPINOV EMT 10 (manufactured by SEPIC), and polyacrylic ammonium, SIMULGEL A (SEP IC Corp.), polyacrylamide / ammonium acrylate copolymer, SEPIPLUS 265 (SEPIC), acrylic amide / sodium acrylate copolymer, Cosmedia ATC (Cognis), etc. .

  It is preferable that the compounding quantity of the component (a) in the skin cosmetics of this invention shall be 0.1-1.0 mass% with respect to cosmetics whole quantity. If it is less than 0.1%, it tends to cause phenomena such as separation, oil floating, emulsion breakage, and aggregation, which is not preferable from the viewpoint of stability. On the other hand, even if it exceeds 1.0% by mass, the effect of the present invention is enhanced. It is not something that you do, but it can contribute to making you feel sticky.

The component (b) blended in the skin cosmetic of the present invention is a non-emulsifying cross-linked silicone. As the non-emulsifying cross-linked silicone used in the present invention (component (b)), a cross polymer obtained by reaction of methyl hydrogen polysiloxane and methyl vinyl polysiloxane (hereinafter referred to as “dimethicone / vinyl dimethicone cross polymer”), Cross-polymer by reaction of partially long-chain alkylated methyl hydrogen polysiloxane and methyl vinyl polysiloxane (hereinafter referred to as “vinyl dimethicone / alkyl dimethicone cross polymer”) and cross-polymer by reaction of methyl hydrogen polysiloxane and alkene ( Hereafter referred to as “dimethicone cross polymer”), a cross polymer obtained by reaction of methyl hydrogen polysiloxane and phenyl vinyl dimethicone (hereinafter referred to as “dimethicone / phenyl vinyl dimethicone cross poly”). Is preferably one or more compounds selected from the group consisting of over "hereinafter).
In the partially long-chain alkylated methylhydrogen polysiloxane that is a raw material of the vinyl dimethicone / alkyl dimethicone crosspolymer, the long-chain alkyl preferably has 10 to 18 carbon atoms.

  Examples of the dimethicone / vinyl dimethicone cross polymer include those referred to as INCI name dimethicone / vinyl dimethicone cross polymer or polysilicone-11. Moreover, what is called INCI name dimethicone cross polymer corresponds to dimethicone cross polymer. In addition, among vinyl dimethicone / alkyl dimethicone crosspolymers, a crosspolymer obtained by the reaction of laurylated methylhydrogenpolysiloxane with methylvinylpolysiloxane (hereinafter referred to as “vinyl dimethicone / lauryl dimethicone crosspolymer”) includes the INCI name vinyl. Applicable are dimethicone / lauryl dimethicone crosspolymers.

  The oil-in-water emulsified skin cosmetic of the present invention preferably contains 0.5 to 5.0% by mass of the non-emulsifiable crosslinked silicone (component (b)) in the total amount of the oil-in-water emulsified skin cosmetic. If the content is less than 0.5% by mass, the effect of the present invention is not sufficiently obtained, and even if it exceeds 5.0% by mass, the effect is not enhanced, and on the contrary, it causes stickiness. Can be.

In preparing the oil-in-water emulsified skin cosmetic of the present invention, it is preferable to blend the non-emulsifying cross-linked silicone (component (b)) as a swollen product (gel composition) swollen with a liquid oil. Thereby, the oil-in-water type emulsified skin cosmetic which has the outstanding effect can be prepared stably.
Examples of the liquid oil in this case include liquid silicone oil, liquid hydrocarbon oil, liquid ester oil, liquid higher fatty acid, and the like, and in particular, liquid oil having a low viscosity at room temperature (25 ° C.), for example, 100 mPa · s or less. Is preferred. A preferred viscosity range is 1 to 100 mPa · s.

  In the non-emulsifiable cross-linking silicone liquid swollen material which is a preferable blending form in the present invention, the mixing ratio of the non-emulsifying cross-linking silicone and liquid oil is preferably 5 to 40:95 to 60 in terms of mass ratio. . Within this range, the swelling product is suitable for the oil-in-water emulsified skin cosmetic of the present invention.

Non-emulsifying cross-linked silicone (component (b)) is commercially available in the form of a liquid oil swell. In the present invention, a commercially available product can be used, and examples of the commercially available product include the following.
As a swelling product of INCI name dimethicone / vinyl dimethicone crosspolymer or poly-silicone-11, KSG-15 ((dimethicone / vinyl dimethicone) crosspolymer, a mixture of cyclopentasiloxane and about 5% cross-linked product), KSG -16 ((dimethicone / vinyl dimethicone) cross-polymer, mixture of dimethicone 6 mPa · s, about 25% crosslinked), KSG-18 ((dimethicone / vinyl dimethicone) cross-polymer, phenyl trimethicone mixture, about 15%) (Shin-Etsu Chemical Co., Ltd.), GRANSIL GCM (polysilicone-11 and octamethylcyclotetrasiloxane is a mixture of about 6% cross-linked product), GRANSIL GCM-5 (polysilicone-11 and decamethyl) Mixing cyclopentasiloxane The cross-linked product is about 6%), GRANSIL IDS (polysilicone-11 and isodecane is about 7% cross-linked product), GRANSIL DMG-6 (polysilicone-11 and dimethicone 6 mPa · s is about cross-linked product) 18%), GRANSIL DMG-20 (a mixture of poly-silicone-11 and dimethicone 20 mPa · s is about 25%), GRANSIL DMG-50 (a mixture of poly-silicone-11 and dimethicone 50 mPa · s is about 26%), GRANSIL PM (polysilicone-11 and phenyltrimethicone mixture is about 20% cross-linked), GRANSIL ININ (polysilicone-11 and isononyl isononanoyl is about 15% cross-linked) (above, GRANT).

  Further, as a swelling product of what is called INCI name vinyl dimethicone / lauryl dimethicone cross polymer, KSG-41 (a mixture of (vinyl dimethicone / lauryl dimethicone) cross polymer and liquid paraffin and about 30% cross-linked product), KSG-42 ((Vinyl dimethicone / lauryl dimethicone) cross polymer, light isoparaffin mixture, crosslinked product is about 25%), KSG-43 ((vinyl dimethicone / lauryl dimethicone) cross polymer, crosslinked product of glyceryl tri-2-ethylhexanoate About 30%), KSG-44 ((vinyl dimethicone / lauryl dimethicone) crosspolymer, a mixture of squalane and about 5% cross-linked product) (Shin-Etsu Chemical Co., Ltd.).

  In addition, as a swelling product of what is called an INCI name alkyl (C30-45) cetearyl dimethicone crosspolymer, VELVESIL 125 (a mixture of alkyl (C30-45) cetearyl dimethicone crosspolymer and cyclopentasiloxane is used as a cross-linked product. .5%), VELVESIL Plus (alkyl (C30-45) cetearyl dimethicone cloth polymer, cyclopentasiloxane, PEG / PPG-20 / 23 dimethicone 5 mPa · s, with a crosslinked product of about 20%), cetearyl dimethicone cloth As a swelling material of what is called a polymer, VELVESIL DM (cetearyl dimethicone cross polymer, a mixture of dimethicone 5 mPa · s and about 17% crosslinked product) (above, manufactured by Momentive Performance Materials Co., Ltd.) and the like can be mentioned.

  Furthermore, as a swelling product of what is called INCI name dimethicone cross polymer, DC9040 (dimethicone cross polymer and decamethylcyclopentasiloxane is a mixture of 12% cross-linked product), DC9041 (dimethicone cross polymer and dimethicone 5 mPa · s mixture) 16%), DC9045 (a mixture of dimethicone crosspolymer and decamethylcyclopentasiloxane and 12.5% crosslinked product) (above, manufactured by Toray Dow Corning Co., Ltd.).

The component (c) blended in the skin cosmetic of the present invention is spherical silicone particles. The spherical silicone particles used in the present invention are preferably (dimethicone / vinyl dimethicone) crosspolymer and / or polymethylsilsesquioxane. These may be oil-containing or coated.
The spherical silicone particles used in the present invention are preferably 5 μm or less.

  As the spherical silicone particles (component (c)) used in the present invention, commercially available ones can be used, and examples of commercially available products are called INCI names (dimethicone / vinyl dimethicone) crosspolymer. Trefil E-506S (particle size 4μm), oil-containing trefil E-508 (particle size 4μm, containing 30% dimethicone 100mPa · s), silica-coated type 9701 Cosmetic Powder (particle size 4μm) EP-9215 Cosmetic Powder (particle size 4 μm), titanium oxide coating type, EP-9261 TI Cosmetic Powder (particle size 4 μm), alumina coating type, EP-9293 AL Cosmetic Powder (particle size 4 μm) (above, Toray Dow Corning Co., Ltd.). In addition, as INCI name polymethylsilsesquioxane, TOSPEARL 120A (particle size 2 μm), TOSPEARL 145A (particle size 4.5 μm) (above, manufactured by Momentive Performance Materials) are listed. It is done.

  The oil-in-water emulsified skin cosmetic of the present invention preferably contains 0.5 to 5.0% by mass of the spherical silicone particles in the total amount of the oil-in-water emulsified skin cosmetic. If the content is less than 0.5% by mass, the effect of the present invention is not sufficiently obtained, and even if it exceeds 5.0% by mass, the effect is not enhanced, and on the contrary, it causes stickiness. Can be.

  In the oil-in-water skin cosmetic of the present invention, the mass ratio (component (c) / component (b)) of the component (b) non-emulsifiable crosslinked silicone to the component (c) spherical silicone particles is 1.2 to A range of 2.0 is preferred. If the ratio is less than 1.2, the wrinkle improving effect cannot be sufficiently exhibited. If the ratio exceeds 2.0, the beam improving effect is not sufficiently felt. .

In addition to the essential components (a) to (c) described above, the oil-in-water skin cosmetic of the present invention further contains a hydrophobic associative thickener (component (d)), thereby improving the wrinkle and beam. Further enhanced.
As the hydrophobic associative thickener (component (d)) used in the present invention, the following general formula (1):
[Wherein R ¹ , R ² and R ⁴ each independently represents a hydrocarbon group, R ³ represents a hydrocarbon group which may have a urethane bond, and R ⁵ represents a linear, branched or secondary chain. Represents a hydrocarbon group, a fluorocarbon group, an alkyl silicone group, or an aromatic hydrocarbon group, m is an integer of 2 or more, h is an integer of 1 or more, and k and n are each independently 0 to 1000. And / or the following (1) to (3):
(1) Acrylic acid or methacrylic acid (2) Alkyl acrylate or alkyl methacrylate (3) An acrylic polymer containing an ester of acrylic acid or methacrylic acid and polyoxyethylene alkyl ether as a constituent monomer is preferred.

The hydrophobically modified polyether urethane used in the present invention is represented by the above general formula (1). In the general formula (1), R ¹ represents a hydrocarbon group, but R ¹ — (OH It is preferably a residue of a polyol represented by _m .
Further, R ^2, R ⁴ in the general formula (1) is each independently represents a hydrocarbon group, preferably an alkylene or phenylethylene group having 2 to 4 carbon atoms.
R ³ in the general formula (1) represents a hydrocarbon group which may have a urethane bond, and is preferably a polyisocyanate residue represented by R ³ — (NCO) _{h + 1.} The polyisocyanate represented by R ³ — (NCO) _{h + 1} is a polyisocyanate having a urethane bond obtained by reacting a 2 to 8 valent polyol with a 2 to 4 valent polyisocyanate. Is preferred.

R ⁵ in the general formula (1) represents a linear, branched or secondary hydrocarbon group, a fluorocarbon group, an alkyl silicone group, or an aromatic hydrocarbon group. In the case of the hydrocarbon group, the carbon number is preferably 8 to 36. In the case of a fluorocarbon group, it is preferably a linear, branched and / or secondary fluorocarbon group having 4 to 24 carbon atoms. In the case of an alkyl silicone group, an alkyl silicone having a molecular weight of 200 or more, more preferably dimethyl silicone having a molecular weight of 500 or more is preferable. Furthermore, in the case of an aromatic carbon group, an aromatic carbon group having 10 or more carbon atoms is preferable, and a group selected from cholesterol, cholestanol, phytosterol, phytostanol and derivatives thereof is more preferable.

The hydrophobically modified polyether urethane of the general formula (1) is, for example, one or more polyether polyols represented by R ¹ -[(O—R ² ) _k —OH] _m , and R ³ — ( (NCO) reacting one or more polyisocyanates represented by _{h + 1} with one or more polymonoalcohols represented by HO— (R ⁴ —O) _n —R ^5. Can be obtained. In this case, R ^{1 to} R ⁵ in the general formula (2) are R ¹ -[(O—R ² ) _k —OH] _m , R ³ — (NCO) _{h + 1} , HO— (R ⁴ — O) is determined by _n -R ^5. The charging ratio of the three members is not particularly limited, but the ratio of the hydroxyl group derived from polyether polyol and polyether monoalcohol to the isocyanate group derived from polyisocyanate is NCO / OH = 0.8: 1 to 1.4: 1. Is preferred.

The polyether polyol compound represented by R ¹ -[(O—R ² ) _k —OH] _m is an m-valent polyol, an alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, styrene oxide, or the like. Can be added by polymerization.
Here, as the m-valent polyol, those having 2 to 8 valences are preferable. For example, dihydric alcohols such as ethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol and neopentyl glycol; glycerin, trioxyisobutane, 1 , 2,3-butanetriol, 1,2,3-pentatriol, 2-methyl-1,2,3-propanetriol, 2-methyl-2,3,4-butanetriol, 2-ethyl-1,2 , 3-butanetriol, 2,3,4-pentanetriol, 2,3,4-hexanetriol, 4-propyl-3,4,5-heptanetriol, 2,4-dimethyl-2,3,4-pentane Triol, pentamethylglycerin, pentaglycerin, 1,2,4-butanetriol, 1,2,4-pe Trivalent alcohols such as tantriol, trimethylolethane, trimethylolpropane; pentaerythritol, 1,2,3,4-pentanetetrol, 2,3,4,5-hexanetetrol, 1,2,4, Tetravalent alcohols such as 5-pentanetetrol, 1,3,4,5-hexanetetrol; pentavalent alcohols such as adnit, arabit and xylit; hexavalent alcohols such as dipentaerythritol, sorbit, mannitol and exit An octahydric alcohol such as sucrose;

In addition, R ² is determined depending on the alkylene oxide, styrene oxide or the like to be added, and is particularly easily available. In order to exhibit excellent effects, alkylene oxide or styrene oxide having 2 to 4 carbon atoms is preferable.
Alkylene oxide, styrene oxide and the like to be added may be homopolymerization, two or more kinds of random polymerization, or block polymerization. The adding method may be a normal method. The degree of polymerization k is 0 to 1,000, preferably 1 to 500, and more preferably 10 to 50. The ratio of ethylene group occupying the R ² is preferably preferably from 50 to 100 wt% of the total R ^2.
The molecular weight of R ¹ -[(O—R ² ) _k —OH] _m is preferably 500 to 100,000, particularly preferably 1,000 to 50,000.

The polyisocyanate represented by R ³ — (NCO) _{h + 1} is not particularly limited as long as it has two or more isocyanate groups in the molecule. For example, aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate, biphenyl diisocyanate, diisocyanate of phenylmethane, triisocyanate, tetraisocyanate and the like can be mentioned.
Examples of the aliphatic diisocyanate include methylene diisocyanate, dimethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, 2,2-dimethylpentane diisocyanate, 3-methoxyhexane diisocyanate, Octamethylene diisocyanate, 2,2,4-trimethylpentane diisocyanate, nonamethylene diisocyanate, decamethylene diisocyanate, 3-butoxyhexane diisocyanate, 1,4-butylene glycol dipropyl ether diisocyanate, thiodihexyl diisocyanate, metaxylylene diisocyanate, paraxylylene Range isocyanine DOO, tetramethylxylylene diisocyanate, and the like.

Examples of the aromatic diisocyanate include metaphenylene diisocyanate, paraphenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, dimethylbenzene diisocyanate, ethylbenzene diisocyanate, isopropylbenzene diisocyanate, tolidine diisocyanate, 1,4- Examples include naphthalene diisocyanate, 1,5-naphthalene diisocyanate, 2,6-naphthalene diisocyanate, and 2,7-naphthalene diisocyanate.
Examples of the alicyclic diisocyanate include hydrogenated xylylene diisocyanate and isophorone diisocyanate. Examples of biphenyl diisocyanate include biphenyl diisocyanate, 3,3′-dimethylbiphenyl diisocyanate, and 3,3′-dimethoxybiphenyl diisocyanate.

  Examples of the diisocyanate of phenylmethane include diphenylmethane-4,4′-diisocyanate, 2,2′-dimethyldiphenylmethane-4,4′-diisocyanate, diphenyldimethylmethane-4,4′-diisocyanate, 2,5,2 ′. , 5′-tetramethyldiphenylmethane-4,4′-diisocyanate, cyclohexylbis (4-isothiontphenyl) methane, 3,3′-dimethoxydiphenylmethane-4,4′-diisocyanate, 4,4′-dimethoxydiphenylmethane 3,3′-diisocyanate, 4,4′-diethoxydiphenylmethane-3,3′-diisocyanate, 2,2′-dimethyl-5,5′-dimethoxydiphenylmethane-4,4′-diisocyanate, 3,3′- Dichlorodiphenyldimethyl Tan-4,4'-diisocyanate, benzophenone-3,3'-diisocyanate, and the like.

  Examples of the triisocyanate include 1-methylbenzene-2,4,6-triisocyanate, 1,3,5-trimethylbenzene-2,4,6-triisocyanate, 1,3,7-naphthalene triisocyanate, and biphenyl. -2,4,4'-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, 3-methyldiphenylmethane-4,6,4'-triisocyanate, triphenylmethane-4,4 ', 4' ' -Triisocyanate, 1,6,11-undecane triisocyanate, 1,8-diisocyanate-4-isocyanate methyloctane, 1,3,6-hexamethylene triisocyanate, bicycloheptane triisocyanate, tris (isocyanatephenyl) thiophosphate, etc. Is mentioned.

Moreover, you may use with the dimer and trimer (isocyanurate coupling | bonding) of these polyisocyanate compounds, and you may make it react with an amine and use it as a biuret. Further, polyisocyanates having urethane bonds obtained by reacting these polyisocyanate compounds with polyols can also be used. As a polyol, the thing of 2-8 valence is preferable, and the above-mentioned polyol is preferable. Incidentally, R ³ - (NCO) if the _{h + 1} using trivalent or more polyisocyanates, polyisocyanate preferably has the urethane bond.

The polyether monoalcohol represented by HO— (R ⁴ —O) _n —R ⁵ ultimately corresponds to at least two hydrophobic groups separated by hydrophilic chain moieties in the hydrophobically modified polyether urethane structure. It is not particularly limited as long as it is a polyhydric alcohol polyether.
Such a compound can be obtained, for example, by addition polymerization of a monohydric alcohol with alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, styrene oxide, or the like.

R ⁵ that is the residue of the monohydric alcohol is not particularly limited as long as it is a group that functions as a hydrophobic group in the final hydrophobically modified polyether urethane structure. For example, an alkyl group, an alkenyl group, an alkylaryl group, Examples thereof include cycloalkyl groups, cycloalkenyl groups, hydrocarbons such as aromatic hydrocarbons, fluorocarbon groups, and alkyl silicone groups.
Examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertiary butyl, pentyl, isopentyl, neopentyl, tertiary pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl. , Tridecyl, isotridecyl, myristyl, palmityl, stearyl, isostearyl, icosyl, docosyl, tetracosyl, triacontyl, 2-octyldodecyl, 2-dodecyldodecyl, 2-dodecylhexadecyl, 2-tetradecyloctadecyl, monomethyl branched-isostearyl, etc. Is mentioned.

Examples of the alkenyl group include vinyl, allyl, propenyl, isopropenyl, butenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, oleyl and the like.
Examples of alkylaryl groups include phenyl, toluyl, xylyl, cumenyl, mesityl, benzyl, phenethyl, styryl, cinnamyl, benzhydryl, trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonyl Examples include phenyl, α-naphthyl, β-naphthyl group and the like.

Examples of the cycloalkyl group and the cycloalkenyl group include a cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl, and methylcycloheptenyl groups. Etc.
Examples of the aromatic hydrocarbon include cholesterol, cholestanol, phytosterol, phytostanol, and derivatives thereof. Aromatic hydrocarbons are suitable as materials for hydrophobically modified polyether urethanes because they have the property of very strongly associating not only with hydrophobic interactions but also with π-π interactions in aqueous solvents.

Examples of the fluorocarbon group include heptadecafluoro-n-decanol.
The alkyl silicone group is an alcohol residue of alkyl siloxane having one hydroxyl group in the structure. A part of the alkyl group may be substituted with a fluorocarbon group. Commercially available products may be used as the hydroxyl group-containing alkylsiloxane. Examples of commercially available products include Silaplane FM0411, FM0421, FM0425 (manufactured by Chisso Corporation), and the like. The hydroxyl group-containing alkyl silicone preferably has a molecular weight of 200 or more, more preferably a molecular weight of 500 or more.
In addition, in the polyether monoalcohol, the alkylene oxide, styrene oxide and the like to be added may be homopolymerization, two or more kinds of random polymerization, or block polymerization. The addition method may be a normal method. The degree of polymerization n is 0 to 1,000, preferably 1 to 200, more preferably 10 to 50. Further, the proportion of the ethylene group in R ⁴ is preferably 50 to 100% by mass, more preferably 65 to 100% by mass of the total R ⁴ , whereby a hydrophobic modified polyether urethane preferable for the purpose of the present invention is obtained. It is done.

  In the production of the hydrophobically modified polyether urethane of the general formula (1), it can be obtained by a reaction of a normal polyether and an isocyanate. Moreover, it can manufacture according to the method of Japanese Patent Publication No. 9-71766. For example, polyether polyol, polyisocyanate, and polymonoalcohol can be obtained by heating at 80 to 90 ° C. for 1 to 3 hours for reaction.

For example, the polyether polyol (a) represented by R ¹ — [(O—R ² ) _k —OH] _m and the polyisocyanate (b) represented by R ³ — (NCO) _{h + 1} ) And the polyether monoalcohol (c) represented by the above-mentioned HO— (R ⁴ —O) _n —R ⁵ , other than the compound having the structure of the general formula (1) as a by-product There are things to do. For example, when diisocyanate is used, the main product is a c-b-a-b-c type compound represented by the general formula (2). Compounds such as b- (ab) _x- abc-type may be by-produced. In this case, the compound of the general formula (1) type can be used in the present invention in the form of a mixture containing the compound of the general formula (1) type without separating only the compound of the general formula (1) type.

Further, urea, ether, ester, amide bond, etc. may be further formed in the polymer in the hydrophobically modified polyether urethane according to the present invention.
Commercially available products can be used for the hydrophobically modified polyether urethane of the present invention. Examples of commercially available products include Adecanol UH140S, UH-420, UH-438, UH-750, and GT-. 700 (above, manufactured by Asahi Denka Kogyo Co., Ltd.), Serad-FX1100, FX1010, 1035 (above, manufactured by HULS), Rheolate 205, 208, 204, 225, 278, 244 (above, manufactured by Rheox) ), DW1206F, 1206J, 1206G (above, manufactured by Rohm & Haas), Dapra-T212 (produced by Akzo), Borchigel-LW44, L75N (above, produced by Borchers), and the like.

An acrylic polymer which is another hydrophobic associative thickener (component (d)) used in the present invention is, for example, an INCI name, acrylate / ceteth-20 methacrylate copolymer, acrylate / steareless-50. Examples include methacrylate copolymers, acrylate / steareth-20 methacrylate copolymers, and acrylate / Beheneth-25 methacrylate copolymers, and are commercially available as aqueous dispersions (polymer emulsions) under trade names such as Aculin 22 and Aculin 28. Yes (made by Rohm & Haas).
Among these acrylic polymers, Aculin 22 (acrylate / steareth-20 methacrylate copolymer) is particularly preferable in terms of non-stickiness.

Acrine 22 is an aqueous dispersion of an ester copolymer of methacrylic acid, ethyl acrylate, methacrylic acid, and polyoxyethylene (20) stearyl ether.
The aqueous dispersion of the acrylic polymer is diluted with water or the like as necessary, and thickened by adding an alkali agent and neutralizing. Therefore, the pH of the oil-in-water skin cosmetic of the present invention is preferably in the range of 6 to 7.5.
The alkali agent for neutralization used finely is not particularly limited, and an inorganic base such as sodium hydroxide or potassium hydroxide, or an organic base such as triethanolamine, isopropanolamine, or basic amino acid may be used. it can.

In the oil-in-water skin cosmetic of the present invention, the amount of the hydrophobic associative thickener is 0.01 to 3.0% by mass. If it is less than 0.01%, the effect of improving the beam / wrinkle is not sufficiently exhibited, and if it exceeds 3.0% by mass, usability such as spreading on the skin may be deteriorated.
The thickening action of the acrylic polymer is considered to be mainly due to the hydrophobic action by the alkyl group at the end of the POE chain branched from the polymer chain and the electrostatic repulsion action by the carboxyl group.

In the oil-in-water skin cosmetic of the present invention, when spherical silica (component (e)) is blended, the wrinkle / beam improvement effect is further enhanced.
As the spherical silica used in the present invention, both porous and nonporous spherical particles are used. The particle diameter is preferably an average particle diameter of 5 μm or less. This is because if the average particle diameter exceeds 5 μm, “swing” occurs in terms of usability. Specific examples of porous materials include SUNSPHERE H-31 (average particle size 3 μm), H-51 (average particle size 5 μm), H-32 (average particle size 3 μm), H-52 (average particle size) 5-μm), H-33 (average particle size 3 μm), H-53 (average particle size 5 μm), L-31 (average particle size 3 μm), L-51 (average particle size 5 μm), etc. Examples thereof include NP-30 (average particle size 3 μm).

  When spherical silica (component (e)) is blended in the oil-in-water skin cosmetic of the present invention, the blending amount is 0.1 to 5.0% by mass, preferably 0.5 to 3.0% by mass. It is. If the amount is less than 0.1% by mass, the effect of improving the beam and wrinkles is not exhibited. If the amount exceeds 5.0% by mass, the whiteness is conspicuous and “swing” occurs during application.

  In the present invention, by adjusting the oil-in-water type emulsified skin cosmetic containing the essential components (a), (b) and (c), it is not sticky during use and has good spread and familiarity with the skin. In this case, a cosmetic is obtained that is not sticky, has a good feel, has a moist and moist feeling, and is excellent in improving skin creases and wrinkles.

In addition to the above essential components (a) to (c) and components (d) and (e), the oil-in-water emulsified skin cosmetic of the present invention is usually a component that can be blended in an external composition such as a cosmetic. As long as the desired effect of the present invention is not impaired.
Examples of the optional blending component include oils other than those described above, powder components, pigments, surfactants other than those described above, moisturizers, polymers other than those described above, thickeners other than those described above, lower alcohols, ultraviolet absorbers, and metals. Examples include sequestering agents, saccharides, various extracts, drugs, amino acids, organic amines, pH adjusters, skin nutrients, vitamins, antioxidants, fragrances, and water.

  Among optional ingredients, examples of the lower alcohol include methanol, ethanol, propanol, and isopropanol. Examples of sterols include cholesterol, sitosterol, phytosterol, lanosterol and the like.

  Examples of powders include talc, muscovite, synthetic mica, phlogopite, saucite, biotite, lithia mica, sericite, permiculite, kaolin, titanium dioxide, titanium oxide-coated mica, titanium oxide-coated talc, titanium oxide-coated bismuth oxychloride. Pearl pigments such as bismuth oxychloride, fish scale foil, colored titanium oxide-coated mica, metal powder pigments such as aluminum powder and copper powder, iron oxide (bengala), inorganic red pigments of iron titanate, inorganics such as γ-iron oxide Inorganic yellow pigments such as brown pigments, yellow iron oxide and ocher, inorganic black pigments such as black iron oxide and carbon black, inorganic purple pigments such as mango violet and cobalt violet, chromium oxide, chromium hydroxide and titanic acid Inorganic green pigments such as cobalt, inorganic blue pigments such as ultramarine and bitumen, zinc white, bentonite, barium sulfate , Metal soap, siliceous earth, aluminum silicate, calcium silicate, barium silicate, magnesium silicate, strontium silicate, metal tungstate, calcium carbonate, magnesium carbonate, chromium oxide, chromium hydroxide, carbon black, alumina , Hydroxyapatite, boron nitride, silica, nylon powder, zeolite, benzoguanamine powder, ethylene tetrafluoride powder, polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, cellulose powder and the like.

  Oils other than the above include squalane, liquid paraffin, isoparaffin, petrolatum, microcrystalline wax, ozokerite, ceresin, myristic acid, palmitic acid, stearic acid, oleic acid, isostearic acid, hexadecyl alcohol, oleyl alcohol, cetyl-2- Ethyl hexanoate, 2-ethylhexyl palmitate, 2-octyl dodecyl myristate, 2-octyl dodecyl gum ester, neopentyl glycol-2-ethyl hexanate, triisooctanoic acid glyceride, 2-octyl dodecyl oleate, isopropyl myristate , Triisostearic acid glyceride, tricoconut oil fatty acid glyceride, olive oil, avocado oil, beeswax, myristyl myristate, mink oil, lanolin, dimethyl Le polysiloxane, cyclic dimethyl polysiloxane, methylphenyl polysiloxane, silicone resin, polyether-modified silicone, various hydrocarbons, such as amino-modified silicones, higher fatty acids, fats and oils, esters, waxes, silicone oils, and the like.

  Examples of UV absorbers include benzoic acid UV absorbers such as paraaminobenzoic acid, anthranilic acid UV absorbers such as methyl anthranilate, salicylic acid UV absorbers such as octyl salicylate, phenyl salicylate and homomethyl salicylate, and paramethoxy cinnamon. Isopropyl acid, octyl paramethoxycinnamate, 2-ethylhexyl paramethoxycinnamate, glyceryl mono-2-ethylhexanoate diparamethoxycinnamate, [4-bis (trimethylsiloxy) methylsilyl-3-methylbutyl] -3 , 4,5-trimethoxycinnamic acid ester, etc., cinnamic acid UV absorbers, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid , 2-hydroxy- Benzophenone ultraviolet absorbers such as sodium methoxybenzophenone-5-sulfonate, urocanic acid, ethyl urocanate, 2-phenyl-5-methylbenzoxazole, 2- (2′-hydroxy-5′-methylphenyl) benzo Examples include triazole and 4-tert-butyl-4′-methoxybenzoylmethane.

  Examples of the sequestering agent include alanine, sodium edetate, sodium polyphosphate, and the like. Examples of the neutralizing agent include 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate and the like. It is done. Examples of the pH adjuster include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium hydrogen carbonate, ammonium hydrogen carbonate and the like. Examples of the antioxidant include ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole and the like. Examples of the antibacterial agent include benzoic acid, salicylic acid, coalic acid, sorbic acid, paraoxybenzoic acid ester, parachloromethcresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizer, phenoxyethanol and the like.

Drugs include vitamin A oil, retinol, retinol palmitate, inosit, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, nicotinic acid dl-α-tocopherol, magnesium ascorbate phosphate, vitamin D ₂ (ergocassipherol), vitamins such as dl-α-tocopherol, dl-α-tocopherol acetate, pantothenic acid and biotin, hormones such as estradiol and ethinylestradiol, amino acids such as arginine, aspartic acid, cystine, cysteine, methionine, serine, leucine and tryptophan, Examples include allantoin, glycyrrhetinic acid, and an anti-inflammatory agent of azulene acid. Ascorbic acid-based whitening agents such as L-ascorbic acid, L-ascorbic acid monophosphate, L-ascorbic acid-2-sulfate, dl-α-tocopherol 2-L-ascorbic acid phosphoric diester, etc. Esters: L-ascorbic acid monostearate, L-ascorbic acid monopalmitate, ascorbic acid monoalkyl esters such as L-ascorbic acid monooleate; L-ascorbic acid distearate, L-ascorbic acid dipalmitate, L-ascorbic acid dioleate Ascorbic acid diesters such as L-ascorbic acid tristearate, L-ascorbic acid tripalmitate, L-ascorbic acid trioleate and the like ascorbic acid triesters; 2-O-α-D-glucopyrano And ascorbic acid-2-glycoside such as sil-L-ascorbic acid.

These ascorbic acids and their derivatives are often compounded as salts. Examples of such salts include alkali metal salts (Na salts, K salts, etc.), alkaline earth metal salts (Ca salts, Mg salts, etc.), ammonium Salts, alkanolamine salts, amino acid salts and the like can be mentioned, and alkali metal salts are preferable.
Examples of the alkoxysalicylic acid-based whitening agent include those described in JP-A-6-40886. Specific examples include 3-methoxysalicylic acid, 3-ethoxysalicylic acid, 4-methoxysalicylic acid, 4-ethoxysalicylic acid, 4-propoxysalicylic acid, 4-isopropoxysalicylic acid, 4-butoxysalicylic acid, 5-methoxysalicylic acid, 5-ethoxysalicylic acid. , 5-proposixalicylic acid, or salts thereof. Examples of the salt include alkali metal salts (Na salt, K salt, etc.), alkaline earth metal salts (Ca salt, Mg salt, etc.), ammonium salts, alkanolamine salts, amino acid salts, etc., preferably alkali metal salts. .

In the oil-in-water emulsified skin cosmetic of the present invention, when a salt-type whitening agent is used, it may be formulated after being made into a salt form, or may be neutralized in the composition with an alkali agent. Such an alkali agent for neutralizing a salt-type whitening agent is not particularly limited as long as it can form a salt. For example, metal hydroxides such as sodium hydroxide and potassium hydroxide; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; organic acid salts such as sodium citrate, potassium malate and sodium lactate, and amino acids such as lysine Etc. Of these, alkali metal hydroxides such as sodium hydroxide and potassium hydroxide are preferred.
Further examples include whitening agents such as arbutin, astringents such as zinc oxide and tannic acid, refreshing agents such as L-menthol and camphor, sulfur, lysozyme chloride, pyridoxine hydrochloride, and γ-oryzanol.

  Various extracts include Acacia yam extract, Buna nome extract, Turmeric extract, Dokudami extract, Oat extract, Merilot extract, Oyster extract, Licorice extract, Peonies extract, Soybean extract, Loofah extract, Kina extract, Yukinoshita extract, Clara extract, Kohone Extract, fennel extract, primrose extract, rose extract, ginger extract, lemon extract, shikon extract, aloe extract, ginger root extract, eucalyptus extract, horsetail extract, sage extract, thyme extract, tea extract, seaweed extract, cucumber extract, clove extract, raspberry extract , Melissa extract, carrot extract, carrot extract, maroni extract, peach extract, peach leaf extract, mulberry extract, cornflower extract, hamamelis extract, prase Taekisu, thymus extract, silk extract, and the like. In addition to the above drugs being used in a free state, those capable of salt formation can be used in the form of an acid or base salt, and those having a carboxylic acid group can be used in the form of its ester.

The present invention will be specifically described below with reference to examples. The blending amount is mass% unless otherwise specified. First, the stability test and the actual use test used in each example and comparative example will be described.
[Burr / wrinkle improvement effect]
Each sample was applied to the face of 10 professional panelists, and sensory evaluation was performed for the effect of improving the wrinkles and wrinkles 5 hours after the application.
(Evaluation criteria)
A: All 10 respondents said that they had an effect of improving the wrinkles / wrinkles B: 7-9 responded that they had an effect of improving the wrinkles / wrinkles C: 6-8 responded that they had an effect of improving the wrinkles / wrinkles D: 3 to 5 people answered that they have an effect to improve the wrinkles and wrinkles
E: Less than 2 respondents said that they have an effect to improve the beam and wrinkles

[Moisturizing effect]
Each sample was applied to the face of 10 professional panelists, and a sensory evaluation was performed on the moist feeling (moisturizing effect) of the skin after application.
(Evaluation criteria)
A: All 10 people have a feeling of moisture B: 7-9 people have a feeling of moisture C: 6-8 people have a feeling of moisture D: 3-5 people feel moist Answer that there is a feeling
E: Less than 2 respondents said they feel moist

[Stickiness]
Each sample was applied to the face of 10 professional panelists, and sensory evaluation was performed on the stickiness of the skin after application.
(Evaluation criteria)
A: All 10 respondents have no stickiness B: 7-9 respondents have no stickiness C: 6-8 respondents have no stickiness D: 3-5 respondents have no stickiness Answer
E: Less than 2 people answered that there was no stickiness

[Spread on skin]
Each sample was applied to the face of 10 professional panelists, and sensory evaluation was performed on the spread on the skin at the time of application.
(Evaluation criteria)
A: All 10 respondents said that they had light and smooth usability. B: 7-9 responded that they had light and smooth usability. C: 6-8 responded that they were light. , Reply D: 3-5 respondents say that they have smooth usability.
E: Less than 2 respondents said that they are light and easy to use.

(Production example)
The component (d) (hydrophobic modified polyether urethane) used in the examples was produced using the raw materials shown in Table 1 below (Production Examples 1 to 3).
Polyethylene glycol (PEG) (number average molecular weight of about 11,000) (R ¹ -[(O—R ² ) _k —OH] was added to a 1,000 mL four-necked flask equipped with a thermometer, a nitrogen inlet tube and a stirrer. _m ) and 198 parts ethylene oxide (EO) 20 mol adduct of 2-dodecyl alcohol (corresponding to HO— (R ⁴ —O) _n —R ⁵ ), and then cooled to 80 ° C. 29.6 parts of hexamethylene diisocyanate (HMDI) (corresponding to R ^3- (NCO) _{h + 1} ) was added and reacted at 80 to 100 ° C. for 2 hours under a nitrogen stream to confirm that the isocyanate was 0%. A light yellow solid reaction product was obtained at room temperature.

(Example)
Oil-in-water type skin cosmetics (Examples 1 to 9) having the compositions shown in Table 2 below were prepared as follows. Oils of (8) to (20), (22) and (27) heated to 70 ° C. in the aqueous phase of (1) to (7) and (21) (24) to (26) heated to 70 ° C. Add phase and emulsify with homogenizer. Next, (23) was added and dispersed uniformly with a homogenizer to obtain the desired oil-in-water emulsified skin cosmetic.

  About the obtained sample of each Example, the said stability test and actual use test were implemented. The results are also shown in Table 2.

* 1: Product name: Supolymer G-1, manufactured by Toho Chemical Co., Ltd. * 2: Product name: Aculyn 22 (30%), Rhom & Haas * 3: Product name: SUNSPHERE L-51, Asahi Glass Co., Ltd. * 4: Product name: TOSPEARL 145A, manufactured by MOMENTIVE performance materials * 5: Product name: 9041 Silicone Elastomer Blend (16%), manufactured by Toray Dow Corning Co., Ltd.

As is apparent from the results shown in Table 2, Example 1 containing all of the components (a), (b), and (c) has a beam / wrinkle improving effect, a moisturizing effect, no stickiness, (All evaluation results were A or B). Further, Example 2 in which the mass ratio of the component (c) / (b) is 1.2 or more has a further improved effect of improving the beam and wrinkles as compared with Example 1 in which the value is 1.2 or less. did.
In Example 3 in which the component (d) was further added to the components (a) to (c), the moisturizing effect was further improved as well as the effect of improving the beam and wrinkles. The examples 4 and 6 constituted by further adding the component (e) to the components (a) to (c) are more sticky than the examples 1 and 2 which can contain the components (a) to (c). The inability to improve was particularly improved. Examples 5, 7, 8 and 9 containing all of the components (a) to (e) have the highest levels in all the items of the effect of improving the wrinkles and wrinkles, the moisturizing effect, the non-stickiness, and the spread on the skin. Evaluation results were obtained.

(Comparative example)
Oil-in-water skin cosmetics (Comparative Examples 1 to 9) having the compositions shown in Table 3 below were prepared according to the same production method as in the above Examples.
About the obtained sample of each comparative example, the said stability test and actual use test were implemented. The results are also shown in Table 3.

  As is apparent from the results shown in Table 3, Comparative Examples 1 to 9 lacking any one of the components (a), (b) and (c), which are essential components of the present invention, are improved in the beam and wrinkle. Any of the effect, moisturizing effect, non-stickiness, and spread to the skin was inferior (the evaluation was C or less).

Example 10 Skin cream (for all faces)
(Compounding ingredients)
(1) 1,3-butylene glycol 5.0
(2) Glycerin 3.0
(3) Component (a)
(Nacryacrylate / AMPS) Copolymer 1.0
(Product name: SIMULGEL EG, manufactured by SEPIC)
(4) Crosslinked poly-γ-glutamic acid 3.0
(5) Polyethylene glycol monostearate (40EO) 1.5
(Product name: NIKKOL MYS-40V, manufactured by Nikko Chemicals Co., Ltd.)
(6) Glyceryl monostearate (self-emulsifying type) 2.5
(Product name: NIKKOL MGS-ASE, manufactured by Nikko Chemicals Co., Ltd.)
(7) Hydrogenated polyisobutene 5.0
(8) Meadow foam oil 2.0
(9) Dimethylpolysiloxane 5 mPa · s 3.0
(10) Stearyl alcohol 0.8
(11) Behenyl alcohol 1.5
(12) Cetanol 2.0
(13) Myristyl myristate 1.0
(14) Component (c)
(Dimethicone / Vinyl Dimethicone) Crosspolymer 2.5
(Product name: Trefil E-506S, manufactured by Toray Dow Corning Co., Ltd.)
(15) Component (b)
Dimethicone crosspolymer / dimethylpolysiloxane 5mPa · s mixture 12.0
(Product name: 9041 Silicone Elastomer Blend (16%),
(Toray Dow Corning Co., Ltd.)
(16) Component (d)
Hydrophobically modified polyether urethane of Production Example 2 0.3
(17) Component (d)
Acrylate / Beheneth-25 methacrylate copolymer 0.1
(Product name: Aculyn 28 (20%), Rhom & Haas)
(18) Potassium hydroxide 0.05
(19) Paraben 0.1
(20) Edetate 0.01
(21) Fragrance 0.1
(22) Purified water residue

The mass ratio of component (c) / component (b) in this example is 1.3, including the essential components (a), (b) and (c) of the present invention, and further including a preferred component (d). This is an example.
(Manufacturing method)
(1) to (4), (16) to (20) and (22) were uniformly mixed, dissolved and dispersed, and heated to 70 ° C. The oil phase, which has been heated and uniformly dissolved and dispersed, is gradually added and emulsified with a homogenizer. Next, (15) was added and dispersed uniformly with a homogenizer to obtain the desired skin cream (for the whole face).
The obtained skin cream (for the whole face) was excellent in the effect of improving the wrinkles and wrinkles and the moisturizing effect, had good skin spread and did not cause stickiness.

Example 11 Skin cream (for eyes)
(Compounding ingredients)
(1) Liquid paraffin 2.0
(2) Isododecane 2.0
(3) Decamethylcyclopentasiloxane 3.0
(4) 2-ethylhexanoic acid isononyl 2.0
(5) Component (b)
(Vinyl Dimethicone / Lauryl Dimethicone) Cross Polymer /
Isododecane mixture 7.0
(Product name: KSG-42 (actual 25%), manufactured by Shin-Etsu Chemical Co., Ltd.)
(6) Component (c)
Polymethylsilsesquioxane 3.5
(Product name: TOSPEARL 120A, manufactured by MOMENTIVE performance materials)
(7) Glyceryl monostearate (self-emulsifying type) 1.5
(Product name: EMALEX GMS-ASE, manufactured by Nippon Emulsion Co., Ltd.)
(8) Polyethylene glycol monostearate (30EO) 2.5
(Product name: EMALEX 830, manufactured by Nippon Emulsion Co., Ltd.)
(9) Polyethylene glycol monoisostearate (8EO) 0.5
(Product name: EMALEX PEIS-8EX, manufactured by Nippon Emulsion Co., Ltd.)
(10) Cetyl alcohol 2.5
(11) Batyl alcohol 1.5
(12) Jojoba oil 4.0
(13) Component (d)
Hydrophobic modified polyether urethane of Production Example 3 0.7
(14) Component (e)
Spherical silica 2.0
(Product name: SUNSPHERE L-31, manufactured by Asahi Glass Co., Ltd.)
(15) Fragrance 0.1
(16) Purified water Residual (17) 1,3-butylene glycol 3.0
(18) Glycerin 10.0
(19) Ascorbic acid glucoside 2.0
(20) Paraben 0.15
(21) Ethanol 3.0
(22) Sodium hydroxide 0.1
(23) Vinylpyrrolidone / AMPS copolymer 0.4
(Product name: ARISTOFLEX AVC, manufactured by CLARIANT)
(24) Citric acid 0.09
(25) Sodium citrate 0.01

The mass ratio of component (c) / component (b) in this example is 2.0, including the essential components (a), (b) and (c) of the present invention, and more preferred components (d) and ( It is an embodiment including e).
(Manufacturing method)
(13) (14) (16) to (25) are uniformly mixed, dissolved and dispersed, and the aqueous phase heated to 70 ° C. is added to (1) to (4), (6) to (12) and (15). Is heated to 70 ° C. and the oil phase uniformly dissolved and dispersed is gradually added and emulsified with a homogenizer. Next, (5) was added and dispersed uniformly with a homogenizer to obtain the desired skin cream (for eyes).
The obtained skin cream (for the eyes) was excellent in the effect of improving the wrinkles and wrinkles, the moisturizing effect, spread well on the skin, and did not cause stickiness.

Example 12 FIG. Skin cream (for all faces)
(Compounding ingredients)
(1) Dimethylpolysiloxane 6 mPa · s 4.0
(2) Isohexadecane 1.0
(3) 2-ethylhexyl 2-ethylhexanoate 2.0
(4) Glyceryl monostearate 0.5
(Product name: EMALEX GMS-2E, manufactured by Nippon Emulsion Co., Ltd.)
(5) Polyethylene glycol monostearate (55EO) 2.0
(Product name: NIKKOL MYS-55V, manufactured by Nikko Chemicals Co., Ltd.)
(6) Cetostearyl alcohol 2.0
(7) Batyl alcohol 2.0
(8) Fragrance 0.1
(9) Component (b)
(Dimethicone / Phenyl vinyl dimethicone) Cross polymer /
Mixture of diphenylsiloxyphenyl trimethicone 11.0
(Product name: KSG-18A (15%), manufactured by Shin-Etsu Chemical Co., Ltd.)
(10) Component (c)
Polymethylsilsesquioxane 2.0
(Product name: TOSPEARL 145A, manufactured by MOMENTIVE performance materials)
(11) Purified water Residual (12) Dipropylene glycol 3.0
(13) 1,3-butylene glycol 2.0
(14) Glycerin 5.0
(15) Tranexamic acid 2.0
(16) Component (a)
Dimethylacrylamide / AMPS crosspolymer 0.5
(Product name: Supolymer G-1, manufactured by Toho Chemical Co., Ltd.)
(17) Component (d)
Hydrophobic modified polyether urethane 0.5
(Product name: Adecanol GT-700, manufactured by Asahi Denka Kogyo Co., Ltd.)
(18) Component (d)
Acrylate / Stearless-20 Methacrylate Copolymer 0.1
(Product name: Aculyn 22 (30%), Rhom & Haas)
(19) Potassium 4-methylsalicylate 1.0
(20) Juyaku extract 0.1
(21) Green tea extract 0.1
(22) Paraben 0.1
(23) Citric acid 0.09
(24) Sodium citrate 0.01
(25) Component (e)
Spherical silica 1.0
(26) Potassium hydroxide 0.3

The mass ratio of component (c) / component (b) in this example is 1.2, including the essential components (a), (b) and (c) of the present invention, and more preferred components (d) and ( It is an embodiment including e).
(Manufacturing method)
(11) to (26) were uniformly mixed, dissolved and dispersed, and the aqueous phase was heated to 70 ° C and (1) to (8) and (10) were heated to 70 ° C and uniformly dissolved and dispersed. The oil phase is gradually added and emulsified with a homogenizer. Next, (5) was added and dispersed uniformly with a homogenizer to obtain the desired skin cream (for the whole face).
The obtained skin cream (for the whole face) was excellent in the effect of improving the wrinkles and wrinkles and the moisturizing effect, had good skin spread and did not cause stickiness.

Claims (13)

The following components (a) to (c):
(A) a homopolymer, copolymer, cross polymer, or a mixture thereof containing one or more selected from 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid and derivatives thereof as a constituent unit;
An oil-in-water type emulsified skin cosmetic comprising (b) a non-emulsifiable cross-linked silicone and (c) spherical silicone fine particles. The mass ratio (component (c) / component (b)) of the component (c) spherical silicone particles to the component (b) non-emulsifiable cross-linked silicone is in the range of 1.2 to 2.0. The oil-in-water emulsified skin cosmetic according to claim 1. The oil-in-water emulsified skin cosmetic according to claim 1 or 2, further comprising a hydrophobic associative thickener (component (d)). The oil-in-water emulsified skin cosmetic according to any one of claims 1 to 3, further comprising spherical silica (component (e)). The component (a) is vinylpyrrolidone / 2-acrylamido-2-methylpropanesulfonic acid copolymer, dimethylacrylamide / 2-acrylamido-2-methylpropanesulfonic acid copolymer, acrylic acid amide / 2-acrylamide-2. -Methylpropanesulfonic acid copolymer, dimethylacrylamide / 2-acrylamido-2-methylpropanesulfonic acid cross-polymer cross-linked with methylenebisacrylamide, a mixture of polyacrylamide and sodium polyacrylate, sodium acrylate / 2-acrylamido-2-methylpropanesulfonic acid copolymer, hydroxyethyl acrylate / 2-acrylamide-2-methylpropanesulfonic acid copolymer, ammonium polyacrylate, polyacrylamide / acrylic The oil-in-water emulsified skin according to any one of claims 1 to 4, wherein the skin is one or more selected from an ammonium copolymer and an acrylamide / sodium acrylate copolymer. Cosmetics. The non-emulsifiable cross-linked silicone of component (b) is a cross-polymer obtained by the reaction of methyl hydrogen polysiloxane and methyl vinyl polysiloxane, or a reaction of a partially long-chain alkylated methyl hydrogen polysiloxane and methyl vinyl polysiloxane. The oil-in-water type according to any one of claims 1 to 5, wherein the oil-in-water type is one or more selected from a cross polymer obtained by a reaction of a cross polymer and a methylhydrogenpolysiloxane with an alkene. Emulsified skin cosmetic. The oil-in-water according to any one of claims 1 to 6, wherein the spherical silicone of the component (c) is a (dimethicone / vinyl dimethicone) crosspolymer and / or polymethylsilsesquioxane. Type emulsified skin cosmetic. The associative thickener of component (d) is represented by the following general formula (1):
[Wherein R ¹ , R ² and R ⁴ each independently represents a hydrocarbon group, R ³ represents a hydrocarbon group which may have a urethane bond, and R ⁵ represents a linear, branched or secondary chain. Represents a hydrocarbon group, a fluorocarbon group, an alkyl silicone group, or an aromatic hydrocarbon group, m is an integer of 2 or more, h is an integer of 1 or more, and k and n are each independently 0 to 1000. And / or the following (1) to (3):
(1) Acrylic acid or methacrylic acid (2) Alkyl acrylate or alkyl methacrylate (3) An acrylic polymer containing an ester of acrylic acid or methacrylic acid and polyoxyethylene alkyl ether as a constituent monomer The oil-in-water type emulsified skin cosmetic according to any one of claims 1 to 7. The hydrophobic modified polyether urethane of the general formula (1), wherein R ² and R ⁴ are each independently an alkylene group having 2 to 4 carbon atoms or a phenylethylene group. Oil-in-water emulsified skin cosmetic. In the hydrophobic polyether urethane of the general formula (1), R ⁵ is a linear, branched or secondary hydrocarbon group having 8 to 36 carbon atoms or a linear, branched or secondary chain having 4 to 24 carbon atoms. The oil-in-water type emulsified skin cosmetic according to claim 8 or 9, wherein the hydrocarbon group is a straight chain, branched chain or secondary fluorocarbon group having 4 to 24 carbon atoms. The hydrophobic modified polyether urethane of the general formula (1) is one or more polyether polyols represented by R ¹ -[(O—R ² ) _k —OH] _m , and R ³ — ( NCO) A reaction product of one or more polyisocyanates represented by _{h + 1} and one or more polyether monoalcohols represented by HO— (R ⁴ —O) _n —R ^5. The oil-in-water emulsified skin cosmetic according to any one of claims 8 to 10. The polyisocyanate represented by R ^3- (NCO) _{h + 1} is a polyisocyanate having a urethane bond obtained by reacting a 2 to 8 valent polyol with a 2 to 4 valent polyisocyanate. The oil-in-water emulsified skin cosmetic according to claim 11. The acrylic polymer of the component (d) is selected from acrylate / ceteth-20 methacrylate copolymer, acrylate / steareth-50 methacrylate, acrylate / steareth-20 methacrylate copolymer, and acrylate / Beheneth-25 methacrylate copolymer. The oil-in-water emulsified skin cosmetic according to any one of claims 8 to 12, wherein the oil-in-water emulsified skin cosmetic is one type or two or more types.