JP5259969B2 - Unevenness correction cosmetic - Google Patents

Description

  The present invention relates to an unevenness correction cosmetic that makes unevenness on the skin such as small wrinkles and pores inconspicuous, and more specifically, it can maintain an excellent unevenness correction effect for a long time, and also has a feeling of use such as extension spread and freshness The present invention relates to an excellent unevenness correction cosmetic.

  Conventionally, cosmetics for making irregularities such as small wrinkles and pores on the skin inconspicuous have been proposed. For example, a blend of silicone oil and powder having a specific viscosity (Patent Document 1), fatty phase And a cosmetic using a solid organic polysiloxane (Patent Document 2), a cosmetic using a spherical powder having a specific particle size, a film-forming component, and an oil (Patent Document 3).

  However, in the cosmetic of Patent Document 1, the adhesion to the skin is not good, and the makeup may break down due to sebum secreted from the skin over time, and the cosmetic of Patent Document 2 has an unevenness correction effect. And its sustainability was not enough. Furthermore, the cosmetic material of Patent Document 3 is sticky and sometimes has a poor smoothness of spreading. As described above, the conventional unevenness correcting cosmetics have a problem that the unevenness correcting effect is insufficient and the feeling of use is inferior.

  In order to solve the above problem, the present applicant has already proposed a cosmetic (Patent Document 4) and a partially crosslinked organopolysiloxane using a partially crosslinked fluoroalkyl group-containing organopolysiloxane and a non-crosslinked fluoroalkyl group-containing organopolysiloxane. A cosmetic (Patent Document 5) using a siloxane polymer, a partially crosslinked polyether-modified organopolysiloxane polymer, and a powder having a specific refractive index is proposed. Although these cosmetics can maintain a certain unevenness correction effect and have a good feeling of use, further improvements have been desired.

Japanese Patent Laid-Open No. 11-60445 JP-A-9-227332 JP 2001-2530 A JP 2005-336161 A JP 2002-322030 A

  It is an object of the present invention to provide a concavo-convex correction cosmetic that can maintain a concavo-convex correction effect that naturally blurs the concavity and convexity on the skin such as small wrinkles and pores for a long period of time and is excellent in feeling of use such as spreading and spreading. Let it be an issue.

  As a result of intensive studies to solve the above problems, the present inventor has found that a polymer compound in which an aqueous solution undergoes a transition from a sol state to a gel state in a temperature range of 0 to 37 ° C., a partially crosslinked organopolysiloxane polymer and / or Or, a cosmetic combined with a partially crosslinked polyether-modified organopolysiloxane polymer and a powder having a specific refractive index has excellent properties for correcting undesirable irregularities such as wrinkles and pores on the skin. I found it. In other words, this cosmetic has high fluidity when applied and can spread and spread on the skin, so that it can flow into concave parts such as small wrinkles and pores. Therefore, it has been found that the unevenness correction effect can be maintained for a long time because it has a good feeling of use and an excellent unevenness correction effect and has high adhesion to the skin and does not collapse even with sebum. It came to be completed.

That is, the present invention
The following components (a) to (c);
(A) a block copolymer or graft copolymer in which a plurality of high-molecular parts having a lower critical solution temperature (LCST) higher than 0 ° C. and lower than 37 ° C. and a hydrophilic polymer part are bonded, and the aqueous solution thereof (B) Partially Crosslinked Organopolysiloxane Polymer and / or Partially Crosslinked Polyether Modified Organopolysiloxane Polymer (c) Refraction It is an uneven | corrugated correction cosmetic characterized by containing the powder whose ratio is 1.3-1.7.

  The unevenness correcting cosmetic of the present invention is excellent in the effect of naturally blurring the unevenness of skin such as small wrinkles and pores, and can keep the effect for a long time, and also has good use such as good spread and freshness A feeling can be obtained.

  In this specification, the lower critical solution temperature (LCST) means that a polymer is dissolved in water at a temperature lower than this temperature and becomes a transparent solution, but becomes insoluble at a temperature higher than this temperature. The temperature at which the solution becomes cloudy or precipitates and the phases are separated.

  The unevenness correction cosmetic of the present invention is a block copolymer or graft copolymer in which a plurality of polymer parts having a lower critical solution temperature higher than 0 ° C. and lower than 37 ° C. and a hydrophilic polymer part are bonded, A polymer compound (component (a)) having a sol-gel transition temperature at a temperature higher than 0 ° C. and lower than 37 ° C. is used as an essential component.

  The polymer compound of component (a) has an inherent sol-gel transition temperature in its aqueous solution, and is a sol having fluidity at a temperature lower than the sol-gel transition temperature. At a temperature higher than the temperature, it loses fluidity and gels.

  Such a polymer compound is a known compound, for example, described as a polymer compound having a sol-gel transition temperature in Japanese Patent No. 3585309. The polymer compound can also be produced in accordance with the description in the specifications of Examples 1 to 6 of this Japanese Patent No. 3585309.

  The polymer compound of the component (a) includes a plurality of polymer portions having an LCST higher than 0 ° C. and lower than 37 ° C. (hereinafter sometimes referred to as “LCST polymer portion”). The LCST polymer portion includes a temperature-responsive polymer that exhibits LCST behavior. Examples of temperature responsive polymers exhibiting LCST behavior include poly N-substituted acrylamide derivatives, poly N-substituted methacrylamide derivatives and copolymers thereof, polypropylene oxide, copolymers of propylene oxide and other alkylene oxides, polyvinyl Examples include methyl ether, polyvinyl alcohol partially acetylated product, and polyalkylene oxide. More specifically, poly-N-acryloylpiperidine, poly-Nn-propylmethacrylamide, poly-N-isopropylacrylamide, poly-N, N-diethylacrylamide, poly-N-isopropylmethacrylamide, poly-N -Cyclopropylacrylamide, poly-N-acryloylpyrrolidine, poly-N, N-ethylmethylacrylamide, poly-N-cyclopropylmethacrylamide, poly-N-ethylacrylamide, etc., and especially poly-N-isopropylacrylamide Preferably used.

  The LCST polymer portion may be a homopolymer composed only of a temperature-responsive polymer exhibiting the LCST behavior, or may be a copolymer copolymerized with another monomer. As other monomers constituting such a copolymer, both hydrophilic monomers and hydrophobic monomers can be used.

  Examples of hydrophilic monomers include N-vinylpyrrolidone, vinylpyridine, acrylamide, methacrylamide, N-methylacrylamide, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxymethyl methacrylate, hydroxymethyl acrylate, acrylic acid having an acidic group, Acrylic acid and salts thereof, vinyl sulfonic acid, styrene sulfonic acid and the like, and N, N-dimethylaminoethyl methacrylate, N, N-diethylaminoethyl methacrylate, N, N-dimethylaminopropyl acrylamide having basic groups and the like A salt etc. can be illustrated.

  On the other hand, as the hydrophobic monomer, acrylate derivatives and methacrylate derivatives such as ethyl acrylate, methyl methacrylate, butyl methacrylate and glycidyl methacrylate, N-substituted alkylmethacrylamide derivatives such as Nn-butylmethacrylamide, vinyl chloride, acrylonitrile, Examples thereof include styrene and vinyl acetate.

  The LCST polymer portion constituting the polymer compound of component (a) used in the present invention has an LCST in the range higher than 0 ° C. and lower than 37 ° C. When this LCST polymer portion is a homopolymer, for example, poly-N-isopropylacrylamide, poly-Nn-propylmethacrylamide or the like having a unique LCST in the range of 0 to 37 ° C. should be selected as appropriate. Can do. On the other hand, when the LCST polymer portion is a copolymer, it is generally possible to increase the LCST of the copolymer by copolymerizing a hydrophilic monomer with a polymer having LCST, and to co-polymerize a hydrophobic monomer. Since the LCST can be lowered by polymerization, a combination of monomers to be copolymerized with a temperature-responsive polymer exhibiting LCST behavior is selected, and the composition ratio and the like are adjusted to 0 to 37 ° C. The LCST of the polymer portion can be adjusted within the range.

  The polymer compound of component (a) used in the present invention contains a hydrophilic polymer portion in addition to the LCST polymer portion. Examples of the polymer constituting this hydrophilic polymer portion include polyalkylene oxides such as methyl cellulose, dextran, polyethylene oxide, and polypropylene oxide, polyvinyl alcohol, poly N-vinyl pyrrolidone, polyvinyl pyridine, polyacrylamide, polymethacrylamide, Poly N-methylacrylamide, polyhydroxymethyl acrylate, polyacrylic acid, polymethacrylic acid, polyvinyl sulfonic acid, polystyrene sulfonic acid and their salts, poly N, N-dimethylaminoethyl methacrylate, poly N, N-diethylaminoethyl methacrylate, Examples thereof include poly N, N-dimethylaminopropyl acrylamide and salts thereof.

  The polymer compound of component (a) used in the present invention is a block copolymer or graft polymer in which the LCST polymer part and the hydrophilic polymer part are bonded. In the case of a graft polymer, even if a hydrophilic polymer portion is bonded as a side chain to an LCST polymer portion that is a main chain, the LCST polymer is used as a side chain to the hydrophilic polymer portion that is a main chain. The parts may be combined.

  The block copolymer of the above-mentioned LCST polymer part and hydrophilic polymer part, for example, introduces a plurality of reactive functional groups (hydroxyl group, carboxyl group, amino group, isocyanate group, etc.) in advance and chemistry of both. It can be obtained by bonding by reaction. For example, by introducing a methacryloyl group which is a polymerizable functional group into both ends of polyethylene oxide which is a hydrophilic polymer, and copolymerizing with N-isopropylacrylamide which is a monomer constituting a polymer having LCST, poly- A block copolymer of an LCST polymer portion composed of N-isopropylacrylamide and a hydrophilic polymer portion composed of polyethylene oxide can be obtained.

  Also, N-isopropylacrylamide and N-acryloxy succinimide are copolymerized to synthesize a polymer in which a group capable of reacting with a primary amine is introduced, and this is reacted with polyethylene oxide having a primary amino group introduced at the terminal. Thus, a block copolymer of an LCST polymer portion composed of poly-N-isopropylacrylamide and a hydrophilic polymer portion composed of polyethylene oxide can be obtained.

  On the other hand, the graft copolymer of the polymer part having the LCST and the hydrophilic polymer part can use a normal graft polymerization method, a method using a chain transfer reaction of the polymer, and free to the backbone polymer. From the viewpoint of controlling the degree of polymerization of the side chain, it is possible to use a method of introducing a functional group capable of splitting into a group and starting polymerization from the functional group, a method of starting ionic polymerization from a trunk polymer, etc. Introducing one polymerizable functional group into the LCST polymer part and copolymerizing with a monomer that gives the hydrophilic polymer part, or introducing one polymerizable functional group into the hydrophilic polymer part A method of copolymerizing with a monomer constituting the LCST polymer portion is preferably used.

  The molecular weight of the polymer compound (a) used in the present invention is preferably 10,000 or more, and particularly preferably 100,000 or more, since a gel is formed well when the temperature is higher than the sol-gel transition temperature. Those having such a molecular weight can be obtained from the block copolymer or graft copolymer obtained as described above using a usual separation and purification means such as ultrafiltration. The molecular weight can be measured according to the method described in Japanese Patent No. 3585309.

  As described above, depending on the composition of the LCST polymer part and the hydrophilic polymer part, the hydrophobicity and hydrophilicity of both polymer parts, the molecular weight, etc., the sol-gel transition temperature of the aqueous solution of the polymer compound of component (a) is changed. The temperature is adjusted to a range higher than 0 ° C. and lower than 37 ° C., preferably 20 ° C. or higher and lower than 37 ° C., particularly preferably 30 ° C. or higher and lower than 37 ° C. If the sol-gel transition temperature is within this range, it can be spread on the skin due to its fluidity at the time of application, so that the concave portion can be filled by the body temperature. Since it is smoothed, it has a good feeling of use and an excellent unevenness correction effect, and has high adhesion to the skin and does not collapse even with sebum and the like, so that the unevenness correction effect is highly durable.

  As such a polymer compound, commercially available mebigel-32 (sol-gel transition temperature 32 ° C.) and mebigel-20 (sol-gel transition temperature 20 ° C .; both manufactured by Ichimaru Falcos) can be used. Mevigel 32 is preferably used. Mevigel-32 and 20 are 15 w / w% aqueous solutions of N-isopropylacrylamide / n-butyl methacrylate / poly (2-20) alkylene (C2-3) glycol dimethacrylate copolymer. The sol-gel transition temperature of the aqueous solution of the polymer compound used in the unevenness correcting cosmetic of the present invention is such that the fluidity can be maintained during the operation of applying the unevenness correcting cosmetic to the skin and spreading. What is necessary is just to set suitably according to temperature, for example, using what adjusted the sol-gel transition temperature of the aqueous solution of a thermoresponsive polymer compound to the temperature higher than 20 degreeC and lower than 32 degreeC using the said commercial item. Can do.

  The blending amount of the polymer compound of component (a) in the unevenness correction cosmetic of the present invention is not particularly limited, but is preferably 0.001 to 5.0% by mass (hereinafter simply referred to as “%”), More preferably, it is 0.1 to 3.0%.

In addition, the partially crosslinked organopolysiloxane polymer of component (b) used in the present invention is an organopolysiloxane having a three-dimensional crosslinked structure that is insoluble in benzene but can contain benzene in the same mass or more. It is a siloxane polymer. The partially cross-linked organopolysiloxane polymer is a polymer obtained by cross-linking organopolysiloxane and has a three-dimensional cross-linking structure in part, from R ¹ ₂ SiO units and R ¹ SiO _1.5 units. R ¹ ₃ SiO _0.5 unit and / or a compound which may contain SiO ₂ unit (provided that R ^{1 of} each structural unit is a hydrogen atom, an alkyl group such as a methyl group, an ethyl group or a propyl group, phenyl Groups, aryl groups such as tolyl groups, and aliphatic unsaturated groups such as vinyl groups, those containing a fluoro group or an ethylene oxide group, and the like, which may be the same or different types). Specific examples include compounds described in JP-B-8-6035.

  The partially cross-linked organopolysiloxane polymer may be used alone or in combination with a low-viscosity silicone oil, such as partially cross-linked trifluoropropylmethyl polysiloxane and methyl trifluoro A mixture of propylcyclopolysiloxane and the like can be preferably used. In addition, as a mixture with such silicone oil, KSG-15 (5 parts of partially crosslinked methylpolysiloxane and 95 parts of decamethylcyclopentasiloxane), KSG-16 (20 to 30 parts of partially crosslinked methylpolysiloxane and methyl) Polysiloxane 70-80 parts), KSG-18 (partially cross-linked methylphenyl polysiloxane 10-20 parts and methylphenyl polysiloxane 80-90 parts) and the like are commercially available (both manufactured by Shin-Etsu Chemical Co., Ltd.). Can also be used.

  On the other hand, the partially crosslinked polyether-modified organopolysiloxane polymer of component (b) used in the present invention is a compound obtained by addition polymerization of an organohydrogenpolysiloxane and an aliphatic unsaturated group-containing compound. This partially crosslinked polyether-modified organopolysiloxane polymer is a known compound, and is described in, for example, JP-A-4-272932, JP-A-5-140320, and JP-A-2001-342255.

As a specific example of the partially crosslinked polyether-modified organopolysiloxane polymer, the general formula R ² _a R ³ _b H _c SiO _{(4-abc) / 2} (1)
And / or R ² _j H _k SiO _{(4-jk) / 2}
(2)
Among the combinations of the organohydrogenpolysiloxane represented by the following formula and the polyoxyalkylene represented by the following general formula (I) and / or the organopolysiloxane represented by the following general formula (B), the above general formula ( Examples thereof include a silicone polymer obtained by addition polymerization using 1) and / or the component represented by the general formula (A) as an essential component.
_{C m H 2m-1 O (} C 2 H 4 O) p (C 3 H 6 O) q C m H 2m-1 ( i)
_{^{R 2 d R 4 e SiO (}} 4-d-e) / 2 ( b)
(Wherein R ² is the same or different substituted or unsubstituted monovalent alkyl group or aryl group having 1 to 18 carbon atoms, an aryl group, an aralkyl group or a halogenated hydrocarbon group, and R ³ represents a general formula —C _n H _2n O (C ₂ H ₄ O) _f (C ₃ H ₆ O) _g An organic group _{represented by} R ⁵ , R ⁴ is a monovalent hydrocarbon group having 2 to 10 carbon atoms having a terminal vinyl group, R ⁵ Is a hydrogen atom, a saturated organic group having 1 to 10 carbon atoms or a group represented by R ⁶ — (CO) —, R ⁶ is a saturated organic group having 1 to 5 carbon atoms, and a, b, c, d, e , J and k are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1, 0.001 ≦ c ≦ 1, 1.0 ≦ d ≦ 3.0, 0.001 ≦ e ≦ 1, respectively. 5, 1.0 ≦ j ≦ 3.0 and 0.001 ≦ k ≦ 1.5, f and p are integers of 2 to 200, and g and q are integers of 0 to 200. , F + g is 3 to 200, p + q is 3 to 200, m and n are 2-6).

で表されるポリオキシアルキレン、下記一般式（Ｂ３）

で表されるポリオキシアルキレン及び下記一般式（Ｂ４）
Ｒ^７ _ｙＲ^１１ _ｚＳｉＯ_{（４−ｙ−ｚ）／２} （Ｂ４）
で表されるオルガノポリシロキサンから成る群から選択される少なくとも１種とを重合してなり、有機溶剤に不溶で、かつ自重と同重量以上のペンタ−３，３，３−トリフロロプロピルペンタメチルシクロペンタシロキサンを溶解しうることを特徴とする三次元架橋構造を有するシリコーン重合物が例示できる（各式中、Ｒ^７は、それぞれ同じか又は異なってもよく、脂肪族不飽和結合を有しない、置換又は非置換の、炭素数１〜２０の１価炭化水素基であって、その１１〜６０モル％がフッ素置換１価炭化水素基である１価炭化水素基であり、Ｒ^８は、それぞれ同じか又は異なってもよく、一般式−Ｃ_ｔＨ_２ｔＯ（Ｃ_ｕＨ_２ｕＯ）_ｖＲ^１２で表される有機基、Ｒ^９は水素原子又は脂肪族不飽和結合を有しない置換若しくは非置換の炭素数１〜１０の１価炭化水素基であり、Ｒ^１０は、それぞれ同じか又は異なってもよく、Ｒ^９と同じか又は−Ｃ_ｔＨ_２ｔ−１で表される有機基であり、Ｒ^１１は末端ビニル基を有する炭素数２〜１０の１価炭化水素基であり、Ｒ^１２は水素原子、脂肪族不飽和基を有しない置換若しくは非置換１価炭化水素基又はアセチル基であり、ｈは１．０〜２．３、ｉは０．００１〜１．０、ｌ（エル）は０．００１〜１．０、ｒは１．０〜２．３、ｓは０．００１〜１．０、ｙは１．０〜２．３、ｚは０．００１〜１．０であって、１．５≦ｈ＋ｉ＋ｌ≦２．６、１．５≦ｒ＋ｓ≦２．６、１．５≦ｙ＋ｚ≦２．６を満たし、ｔは２〜６の整数、ｕは２、３又は４のいずれかの整数、ｖは１〜２００の整数、ｗは１〜２０の整数であり、ｘは０又は１である。）。 As another specific example of the partially crosslinked polyether-modified organopolysiloxane polymer of the component (b), the following general formula (A1)
R ⁷ _h R ⁸ _i H ₁ SiO _{(4-h-i-l) / 2} (A1)
And the following general formula (A2)
_{^{R 7 r H s SiO (4}} -r-s) / 2 (A2)
At least one selected from the group consisting of organohydrogenpolysiloxanes represented by the following general formula (B1)
_{CH 2t-1 O (C u} H 2u O) v C w H 2w-1 (B1)
A polyoxyalkylene represented by the following general formula (B2)

A polyoxyalkylene represented by the following general formula (B3)

And a polyoxyalkylene represented by the following general formula (B4)
^{_{R 7 y R 11 z SiO (}} 4-y-z) / 2 (B4)
Penta-3,3,3-trifluoropropylpentamethyl, which is polymerized with at least one selected from the group consisting of organopolysiloxanes represented by the formula (1) and is insoluble in an organic solvent and equal to or more than its own weight. Examples thereof include silicone polymers having a three-dimensional crosslinked structure characterized by being capable of dissolving cyclopentasiloxane (in the formulas, R ⁷ may be the same or different and does not have an aliphatic unsaturated bond). A substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, 11 to 60 mol% of which is a fluorine-substituted monovalent hydrocarbon group, and R ⁸ is each may be the same or different, formula _{-C t H 2t O (C u} H 2u O) v organic group represented by ^{R 12, R 9} is a substituted or without a hydrogen atom or an aliphatic unsaturated bond Non-replacement A monovalent hydrocarbon group having 1 to 10 carbon ^{atoms, R 10} may be the same or different, is an organic group represented by the same or _-C t _{H 2t-1} and ^{R 9,} R ¹¹ is a monovalent hydrocarbon group having 2 to 10 carbon atoms having a terminal vinyl group, R ¹² is a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having no aliphatic unsaturated group, or an acetyl group; h is 1.0 to 2.3, i is 0.001 to 1.0, l is 0.001 to 1.0, r is 1.0 to 2.3, and s is 0.001 to 1. 0.0, y is 1.0 to 2.3, z is 0.001 to 1.0, and 1.5 ≦ h + i + l ≦ 2.6, 1.5 ≦ r + s ≦ 2.6, 1.5 ≦ y + z ≦ 2.6 is satisfied, t is an integer of 2 to 6, u is an integer of 2, 3 or 4, v is an integer of 1 to 200, w is an integer of 1 to 20, and x is Or 1.).

  Commercially available KSG-21 (10-20 parts of POE-modified partially crosslinked methylphenylpolysiloxane and 80-90 parts of methylphenylpolysiloxane; Shin-Etsu Chemical Co., Ltd.) is used as the partially crosslinked polyether-modified organopolysiloxane polymer. ) Can also be used.

  The blending amount of the partially crosslinked organopolysiloxane and / or partially crosslinked polyether-modified organopolysiloxane of the component (b) in the unevenness correcting cosmetic of the present invention is preferably 0.05 to 10.0%, 0.1 -5.0% is more preferable. If it is within this range, it will spread smoothly and there will be no distortion during use, and an excellent unevenness correction effect can be obtained.

  The powder of the component (c) used in the present invention is a powder having a refractive index in the range of 1.3 to 1.7 according to Snell's law. By blurring, the unevenness of the skin becomes inconspicuous. Specific examples include silicic anhydride, nylon powder, polyethylene powder, polystyrene powder, polyalkyl acrylate, calcium carbonate, magnesium carbonate, barium sulfate, and the like. Can do. Use of a powder having a refractive index of less than 1.3 is not preferable because the transparency of the decorative film is increased, and it is difficult to obtain the effect of blurring small wrinkles and pores. When using a powder having a refractive index of more than 1.7, The decorative film becomes opaque and unnatural finish is not preferable. The refractive index of the powder is particularly preferably 1.3 to 1.5. The particle size of the powder of component (c) is not particularly limited, but is preferably 1 to 30 μm from the viewpoint of making the unevenness of the skin inconspicuous.

  1 to 20% is preferable and, as for the compounding quantity of the component (c) in the uneven | corrugated correction cosmetics of this invention, 5 to 10% is still more preferable. If the amount of component (c) is less than 1%, the effect of making the unevenness of the skin inconspicuous is inferior. On the other hand, if the blending amount exceeds 20%, the spread of elongation may deteriorate, which is not preferable.

  The unevenness correcting cosmetic of the present invention preferably further contains a saccharide as component (d). By blending the saccharide, it is possible to further prevent the makeup film from being twisted and improve the makeup-moistening effect. The saccharide used in the present invention is preferably one selected from the group consisting of monosaccharides, disaccharides, oligosaccharides and sugar alcohols, and specifically glucose, β-lactose, trehalose, raffinose, erythritol. Maltitol, sorbitol and the like are preferable. When the saccharide of component (d) is used in the unevenness correcting cosmetic composition of the present invention, the blending amount is preferably 0.01 to 5%, more preferably 0.5 to 3%.

  The unevenness correcting cosmetic of the present invention preferably further contains a water-soluble polymer other than the component (a) as the component (e). Examples of water-soluble polymers that can be used in the present invention include carrageenan, dextrin, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, polyacrylic acid, sodium polyacrylate, polyacrylic acid alkyl copolymer, polymethacrylic acid. Examples include acids, carboxyvinyl polymers, xanthan gum, carboxymethyl chitin, chitosan and the like. Among these, it can smoothly spread on the skin and flow into irregularities such as small wrinkles and pores to form a decorative film, so that the unevenness correction effect can be further enhanced, and the durability of the effect can be improved because there is little decrease in viscosity Therefore, polyalkyl acrylate acrylate copolymers and carboxyvinyl polymers are preferred. When the water-soluble polymer of this component (e) is used in the unevenness correcting cosmetic composition of the present invention, the blending amount is preferably 0.03 to 3%, more preferably 0.1 to 1.5%.

  The unevenness correcting cosmetic of the present invention preferably further contains silicone oil as the component (f). Any silicone oil that can be used in cosmetics can be used without particular limitation, and examples thereof include dimethylpolysiloxane and decamethylcyclopentasiloxane. 5-30% is preferable and, as for the compounding quantity of the silicone oil of the component (f) in the uneven | corrugated correction cosmetics of this invention, 10-20% is still more preferable.

  In the unevenness correcting cosmetic of the present invention, other optional components can be further blended if necessary within a range not impairing the effects of the present invention. Examples of such optional components include emulsifiers and water-soluble humectants.

  Further, the irregularity-corrected cosmetic of the present invention can be produced according to a conventional method, for example, before and after application of a makeup cosmetic such as a foundation, and a special application for making irregularities on the skin such as small wrinkles and pores inconspicuous Makeup cosmetics such as foundation, concealer, white powder, blusher, makeup base, and other skin care cosmetics such as milky lotion, cream, and beauty serum. it can. Further, the form is not particularly limited, and any of a water-in-oil type, an oil-in-water type, a multiple emulsion and the like may be used.

  The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Examples 1-13
Unevenness correction cosmetics:
The irregularity-corrected cosmetic material having the composition shown in Table 1 below was prepared according to the following production method. About the obtained uneven | corrugated correction cosmetics, each item of uneven | corrugated correction | amendment effect, the sustainability of an effect, the easiness of an extension spread, freshness, and the sag of the application | coating was evaluated with the following evaluation method. The results are also shown in Table 1.

※１：Ｎ−イソプロピルアクリルアミド・メタクリル酸ｎ−ブチル・ポリ（２〜２０）アルキレン(Ｃ２〜３)グリコールジメタアクリレート共重合体水溶液（固形分１５％；ゾル−ゲル転移温度３２℃：一丸ファルコス社製）
※２：ＫＳＧ−２１（信越化学工業社製）

* 1: N-isopropylacrylamide / n-butyl methacrylate / poly (2-20) alkylene (C2-3) glycol dimethacrylate copolymer aqueous solution (solid content 15%; sol-gel transition temperature 32 ° C .: Ichimaru Falcos (Made by company)
* 2: KSG-21 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
A: 1, 2, 5, 6, 9 to 11 are uniformly mixed and dispersed at room temperature.
B: 3, 4, 7, and 8 are uniformly mixed and dispersed at room temperature.
C: B was added to A, uniformly mixed and dispersed, and filled into a container to obtain a cosmetic for correcting irregularities.

(Evaluation method)
<Sensory evaluation>
The following evaluation items were evaluated by 10 women-specialized panels and judged according to the following criteria.
(Evaluation item)
・ Whether the unevenness correction effect is high (+) or low (−) ・ Whether the unevenness correction effect lasts long (+) or (−) ・ Smoothly spreads (+) or does not expand (−) during use Is it fresh (+) or not (-) when used? Is it more difficult (+) or easier to use (-)? (Criteria)
8 or more people feel positive.
6-7 people feel +
3-5 people feel +; △
Less than 2 people feel +

Comparative Examples 1-3
Unevenness correction cosmetics:
The unevenness-corrected cosmetic material having the composition shown in Table 2 below was prepared according to the above production method. About the obtained uneven | corrugated correction cosmetics, the uneven | corrugated correction effect etc. were evaluated like Example 1-13. The results are also shown in Table 2.

  As is apparent from these results, the unevenness correcting cosmetics of Examples 1 to 13 are all excellent in unevenness correcting effect and its sustainability, and also in the sense of use such as good spread, freshness, and smoothness at the time of application. It was good. On the other hand, Comparative Examples 1 to 3 in which any one of the components (a) to (c) was not blended were insufficient in both the unevenness correction effect and the sustainability, and a cosmetic that was satisfactory in terms of use could not be obtained.

Example 14
Oil-in-water type irregularity correction cosmetics:
An oil-in-water type irregularity-corrected cosmetic was produced according to the following formulation and production method.
(Prescription) (%)
(1) Mebigel-32 (* 1) 0.75
(2) Carboxyvinyl polymer 1.5
(3) Sodium hydroxide 0.5
(4) Glycerin 5.0
(5) Purified water Residual amount (6) Polyoxyethylene (20.EO) sorbitan monostearate 1.0
(7) Preservative appropriate amount (8) Ethanol 5.0
(9) Liquid paraffin 3.0
(10) cetostearyl alcohol 2.5
(11) Polyethylene powder (* 3) 8.0
(12) Partially cross-linked polyether-modified organopolysiloxane polymer (* 2) 5.0
(13) Dimethylpolysiloxane 10.0
* 3: Sunfine LH-401 (Asahi Kasei Kogyo Co., Ltd.)

(Manufacturing method)
A: Components 1 to 8 are dissolved by heating at 70 ° C. and mixed uniformly.
B: Components 9 to 13 are dissolved by heating at 70 ° C. and mixed uniformly.
C: B is added to A and emulsified.
D: C was cooled and filled into a container to obtain a cosmetic for correcting irregularities.

  The resulting concealer for correction is a cosmetic for correcting unevenness that is excellent in all items of “smooth stretch and spread”, “adhesion to the skin”, “effect of correcting unevenness”, and “persistence of unevenness correction effect”. there were.

Example 15
Water-in-oil type unevenness concealer:
A water-in-oil unevenness concealer was produced by the following formulation and production method.
(Prescription) (%)
(1) Mebigel-32 (* 1) 5.0
(2) Xanthan gum (* 4) 0.03
(3) 1,3-butylene glycol 10.0
(4) Sodium chloride 1.0
(5) Ethanol 5.0
(6) Preservative appropriate amount (7) perfume appropriate amount (8) purified water remaining amount (9) cetyl dimethicone copolyol (* 5) 1.0
(10) Partially cross-linked polyether-modified organopolysiloxane polymer (* 2) 2.0
(11) Decamethylcyclopentasiloxane 10.0
(12) Glyceryl 2-ethylhexanoate 2.0
(13) Spherical silicone powder (* 6) 10.0
(14) Barium sulfate 7.0
(15) Silicone surface treatment Bengala (* 7) 0.3
(16) Silicone surface-treated yellow iron oxide (* 7) 1.0
(17) Silicone surface-treated black iron oxide (* 7) 0.1
* 4: GRINSTED XANTHAN CLEAR80 (DANISCO)
* 5: ABIL EM-90 (Gold Schmidt)
* 6: KSP-101 (Shin-Etsu Chemical Co., Ltd.)
* 7: Methyl hydrogen polysiloxane treated product

(Manufacturing method)
A: Components 11 to 17 are mixed and dispersed uniformly.
B: Components 9 and 10 are dissolved by heating at 70 ° C., and A is added and mixed uniformly.
C: Components 1 to 8 are mixed and dissolved uniformly.
D: B is added to C and emulsified.
E: D was filled into a container to obtain a concealer for correcting irregularities.

  The concavity for concavity and convexity correction of Example 12 which is an embodiment of the present invention has all items of “smooth extension and spread”, “adhesion to skin”, “concavo-convex correction effect”, and “persistence of concavity and convexity correction effect”. It was an excellent unevenness correcting cosmetic.

  The cosmetic of the present invention is excellent in the effect of naturally blurring the unevenness on the skin such as small wrinkles and pores, and can maintain the effect for a long time, so that the wrinkles and pores are not conspicuous Can be used as special-purpose cosmetics or makeup cosmetics with such functions.

Claims (7)

The following components (a) to (c);
(A) N-isopropylacrylamide / n-butyl methacrylate / poly (2-20) alkylene (C2-3) glycol dimethacrylate copolymer, the aqueous solution of which is higher than 20 ° C. and lower than 32 ° C. 0.001 to 5.0% by mass of a polymer compound having a sol-gel transition temperature
(B) unit content Crosslinked polyether-modified organopolysiloxane polymer 0.05 to 10.0% by weight%
(C) 1.0-20.0 mass% of powder whose refractive index is 1.3-1.7
Containing an oil-in-water type unevenness correction cosmetic characterized by containing.   The oil-in-water type unevenness correction cosmetic according to claim 1, further comprising a saccharide as component (d). The oil-in-water type unevenness correction cosmetic according to claim 2 , comprising 0.01 to 5.0% by mass of the saccharide of component (d). The oil-in-water type irregularity correcting cosmetic according to any one of claims 1 to 3 , further comprising a water-soluble polymer other than the component (a) as the component (e). The oil-in-water type irregularity correction cosmetic according to claim 4 , comprising 0.03 to 3.0% by mass of a water-soluble polymer other than the component (a) of the component (e). The oil-in-water type irregularity correcting cosmetic according to any one of claims 1 to 5 , further comprising silicone oil as component (f). The oil-in-water type irregularity correction cosmetic according to claim 6 , comprising 5.0 to 30.0% by mass of the silicone oil of component (f).