JP2010235469A - Water-in-oil type emulsion cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-in-oil type emulsion cosmetic providing excellent sustainability of massaging action by being spread while maintaining the thickness on the skin while having fresh, non-sticky and refreshing sense of use, and having excellent stability with time. <P>SOLUTION: The water-in-oil type emulsion cosmetic includes the following components (a) to (e): (a) a water-soluble polymer component comprising a copolymer obtained by binding at least acrylic acid or methacrylic acid, an alkyl acrylate or an alkyl methacrylate, to a compound having two or more ethylenically unsaturated groups, and exhibiting thickening properties when an electrolyte is contained; (b) an electrolyte component; (c) an aqueous component; (d) an oily component; and (e) a silicone-based surfactant. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water-in-oil emulsified cosmetic containing a specific acrylic water-soluble polymer, an electrolyte, an aqueous component, and a silicone-based surfactant that exhibits a thickening property when an electrolyte is contained. A water-in-oil emulsified makeup that has a refreshing feel that is fresh and non-sticky, and that is excellent in sustainability of massage action by spreading while maintaining thickness to the skin, and also excellent in stability over time. Regarding fees.

Emulsified cosmetics are generally roughly classified into an oil-in-water type and a water-in-oil type depending on the dispersion type. Oil-in-water emulsified cosmetics are characterized by a fresh feeling of use, while water-in-oil emulsified cosmetics coat the skin surface with an oil film to prevent moisture transpiration and protect the skin from drying. Thus, it is characterized by a high effect of imparting an emollient effect and a moisturizing effect. These water-in-oil emulsified cosmetics have been devised in various ways in order to satisfy both the smooth spread and richness, the feeling of use such as adhesion to the skin, and the stability over time.

For example, a technique using a water-soluble polymer such as xanthan gum (see, for example, Patent Document 1), a technique using a water-soluble polymer electrolyte (see, for example, Patent Document 2), and an oily component that is an external phase such as wax. There is a technique (see Patent Documents 3 and 4) for blending solid oil having a melting point. In addition, water-in-oil emulsified cosmetics that use silicone surfactants such as cross-linked polyether-modified silicones and polyether-modified silicones in order to achieve both a refreshing feeling without stickiness and emulsion stability. (See Patent Documents 5 and 6).
JP 2006-160714 A JP 2002-348210 A JP 2008-24630 A JP 2002-255738 A JP 2001-2520 A JP-A-2003-1113016

However, in the case of the techniques of Patent Documents 1 and 2, depending on the water-soluble polymer to be used, the familiarity to the skin is poor at the time of use, and there is a case where a feeling of slipping is felt at the time of application. In addition, when the techniques of Patent Documents 3 and 4 are used, the high-melting solid oil is blended in the outer phase, so that the spread and adhesion with thickness to the skin during use, and the emulsion stability are improved. In some cases, the skin was not fresh at the time of use, or the skin feeling after application was felt. In addition, when the techniques of Patent Documents 5 and 6 are used, the skin is less familiar than the characteristics of the cross-linked polyether-modified silicone, and it is difficult to maintain the emulsification stability for oils having a high emollient effect such as polar oil. There was a problem.

In view of the above situation, as a result of earnest research, the present inventor made a gel phase comprising a specific acrylic water-soluble polymer, an electrolyte, and an aqueous component that exhibits thickening when an electrolyte is contained as an inner aqueous phase, By using a water-in-oil emulsified cosmetic with a surfactant, it has a refreshing feeling that is fresh and non-sticky, but it continues to massage while maintaining its thickness and spreading. It has been found that a water-in-oil emulsified cosmetic with excellent properties and stability over time can be obtained, and the present invention has been completed.

That is, the present invention comprises the following components (a) to (e):
Component (a): A copolymer comprising acrylic acid or methacrylic acid, acrylic acid alkyl ester or methacrylic acid alkyl ester, and a compound having two or more ethylenically unsaturated groups, and an electrolyte. Water-soluble polymer component (b) that exhibits thickening when contained (b): electrolyte component (c): aqueous component component (d): oily component component (e): containing a silicone-based surfactant A water-in-oil emulsified cosmetic is provided.

Moreover, content of a component (a) is 0.01-5.0 mass%, The said water-in-oil type emulsion cosmetic characterized by the above-mentioned is provided.

Furthermore, the water-in-oil emulsified cosmetic is characterized in that the silicone-based surfactant of component (e) is the following general formula (1).

[Wherein, R ¹ represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, or —C _m H _2m —O— (C ₂ H ₄ O) _d (C ₃ H ₆ O) _e R ⁴ is the same or different organic group selected from organic groups represented by R ⁴ , and R ² is —C _m H _2m —O— (C ₂ H ₄ O) _f (C ₃ H ₆ O). _The polyoxyalkylene group represented by _g- R ⁵ , R ³ represents the following general formula (2)

R ⁴ is a hydrocarbon group having 4 to 30 carbon atoms or an organic group represented by R ^6- (CO)-, R ⁵ is a hydrogen atom or a hydrocarbon having 1 to 30 carbon atoms A group or an organic group represented by R ⁶ — (CO) —, R ⁶ is a hydrocarbon group having 1 to 30 carbon atoms. a, b and c are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1.5 and 0.001 ≦ c ≦ 1.5, respectively, d and e are 0 ≦ d ≦ 50, An integer of 0 ≦ e ≦ 50, f and g are integers of 2 ≦ f ≦ 200, 0 ≦ g ≦ 200, and f + g is 3 to 200, respectively. M is an integer of 0 ≦ m ≦ 15, h is an integer of 0 ≦ h ≦ 500, and n is an integer of 1 ≦ n ≦ 5. Further, the present invention provides the water-in-oil emulsified cosmetic comprising the component (f): polyoxyethylene dipolyhydroxystearate.

Furthermore, the present invention provides the water-in-oil emulsified cosmetic, which is a massage cosmetic.

  Furthermore, component (a) is (meth) acrylic acid 95.42-97.48 mass%, carbon number of the alkyl group is 18-24, (meth) acrylic acid alkyl ester 2.43-4.30 mass%. And a (meth) acrylic acid / (meth) acrylic acid alkyl ester copolymer that is 0.08 to 0.29% by mass of a compound having two or more ethylenically unsaturated groups. An emulsified cosmetic is provided.

  The water-in-oil type emulsified cosmetic according to the present invention has a gel phase comprising a specific acrylic water-soluble polymer, an electrolyte, and an aqueous component that exhibits a thickening property when an electrolyte is contained, as a water-based silicone phase By emulsifying with a surfactant, it has a refreshing feeling that is fresh and non-sticky, but it is excellent in sustainability of massage action by spreading while maintaining thickness to the skin. It is excellent in stability.

Hereinafter, each component will be described in detail.
The component (a) specific acrylic water-soluble polymer of the present invention is blended for the purpose of gelling the inner aqueous phase of the water-in-oil emulsified cosmetic, and improves the stability over time and the sustainability of the massage action. There is. In particular, by containing an electrolyte described later, in addition to improving the stability over time compared to conventional water-in-oil milk cosmetics, the inner water phase can be gelled, so the average particle size of the emulsified droplets remains large. It is possible to stabilize with. In this case, the average particle diameter of the emulsified droplets can be variously controlled from the blending amounts of various essential components, blending components, etc., but is preferably 3 μm or more, particularly preferably 5 μm or more from the point of massage effect. . When the average particle size is within this range, it is possible to continue the massage action for a sufficient time in a state having a thickness.

Component (a) in the present invention is a copolymer in which acrylic acid or methacrylic acid, acrylic acid alkyl ester or methacrylic acid alkyl ester, and a compound having two or more ethylenically unsaturated groups are bonded. Thus, it is a water-soluble polymer that exhibits thickening when it contains an electrolyte.

  The component ratio in component (a) of acrylic acid or methacrylic acid (hereinafter referred to as “(meth) acrylic acid”), which is one of the components of component (a), is particularly limited as long as the characteristics are not impaired. It can be set freely. In the present invention, it is particularly preferably 95.42% by mass (hereinafter simply referred to as “%”) or more and 97.48% or less, more preferably 95.47% or more and 97.46% or less, and 95.97% or more and 96 or less. More preferably, it is 94% or less.

  The kind of the alkyl acrylate or methacrylic acid alkyl ester (hereinafter referred to as “(meth) acrylic acid alkyl ester”), which is one of the components of the component (a), must impair the characteristics of the component (a). Although not particularly limited, in the present invention, the alkyl group preferably has 18 to 24 carbon atoms. The (meth) acrylic acid alkyl ester having 18 to 24 carbon atoms in the alkyl group refers to an ester of (meth) acrylic acid and a higher alcohol having 18 to 24 carbon atoms in the alkyl group. Examples include esters of (meth) acrylic acid and stearyl alcohol, esters of (meth) acrylic acid and eicosanol, esters of (meth) acrylic acid and behenyl alcohol, and esters of (meth) acrylic acid and tetracosanol. it can. These may be used alone or in combination of two or more.

  Among these, particularly in the present invention, considering the viscosity characteristics and texture of the neutralized viscous aqueous solution described later containing the component (a) and the neutralized viscous aqueous solution in the presence of an electrolyte, stearyl methacrylate, eicosanyl methacrylate are considered. , Behenyl methacrylate and tetracosanyl methacrylate are preferred, and (meth) acrylic acid alkyl esters containing at least 50% behenyl methacrylate are more preferred. In addition, as a (meth) acrylic-acid alkylester whose carbon number of an alkyl group is 18-24, you may use commercial items, such as brand name Blemmer VMA70 by Nippon Oil & Fats Corporation, for example.

  The composition ratio in the component (a) of the (meth) acrylic acid alkyl ester is not particularly limited as long as the characteristics are not impaired, and can be freely set. In the present invention, it is particularly preferably 2.43% to 4.3%, more preferably 2.91% to 3.84%.

As a more detailed composition ratio in the component (a) of the (meth) acrylic acid alkyl ester, a (meth) acrylic acid alkyl ester in which the alkyl group has 18 to 24 carbon atoms is 2.43% to 4.3%. It is preferable to contain. More specifically, for example, one (meth) acrylic acid alkyl ester having 18 to 24 carbon atoms in the alkyl group may be contained in an amount of 2.43% to 4.3%. A mixture of two or more (meth) acrylic acid alkyl esters having a number of 18 or more and 24 or less may be contained in an amount of 2.43% or more and 4.3% or less.

  The type of the compound having two or more ethylenically unsaturated groups, which is one of the constituent components of component (a), is not particularly limited as long as the properties of component (a) are not impaired, but in the present invention, for example, ethylene A compound in which the unsaturated group is an allyl group can be preferably used. Specifically, pentaerythritol allyl ethers such as pentaerythritol diallyl ether, pentaerythritol triallyl ether, and pentaerythritol tetraallyl ether, diethylene glycol diallyl ether, polyethylene glycol diallyl ether, and polyallyl saccharose are particularly preferable. In addition, these compounds having two or more ethylenically unsaturated groups may be used alone or in combination of two or more.

  The component ratio in the component (a) of the compound having two or more ethylenically unsaturated groups is not particularly limited as long as the characteristics are not impaired, and can be freely set. In the present invention, 0.08% to 0.29% is particularly preferable, 0.11% to 0.24% is more preferable, and 0.15% to 0.19% is further preferable. When the composition ratio in the component (a) of the compound having two or more ethylenically unsaturated groups is less than 0.08%, sufficient viscosity cannot be obtained in the preparation, which may cause waste liquid over time. is there.

  The component (a) contained in the water-in-oil emulsified cosmetic according to the present invention contains the acrylic acid or methacrylic acid, the acrylic acid alkyl ester or the methacrylic acid alkyl ester described above, and 2 ethylenically unsaturated groups. It consists of a copolymer in which at least one compound is bonded. The polymerization method is not particularly limited, and can be freely selected from any known methods. For example, a usual method such as a method in which these components are stirred in a solvent in an inert gas atmosphere and polymerized using a polymerization initiator can be used.

  Although the inert gas for obtaining the inert gas atmosphere used for superposition | polymerization is not specifically limited, For example, nitrogen gas, argon gas, etc. can be mentioned.

  Although the solvent used for the polymerization is not particularly limited, it dissolves (meth) acrylic acid, (meth) acrylic acid alkyl ester, and a compound having two or more ethylenically unsaturated groups, but does not dissolve the resulting water-soluble polymer. There is no particular limitation as long as it does not inhibit the polymerization reaction. Specific examples of the solvent include hydrocarbon solvents such as n-pentane, n-hexane, n-heptane, cyclopentane, and cyclohexane. These may be used alone or in combination of two or more. Among these, n-hexane and n-heptane can be preferably used. These hydrocarbon solvents can also be used in combination with organic solvents such as ketones, esters, ethers, and saturated alcohols. Specific examples of preferred organic solvents include methyl acetate, ethyl acetate, isopropyl acetate, propyl acetate, butyl acetate, methyl ethyl ketone, butyl propionate, cyclohexanone and the like.

  The amount of the solvent used for the polymerization is preferably 300 to 5000 parts by mass with respect to 100 parts by mass of (meth) acrylic acid from the viewpoint of improving the stirring operability and the economical aspect.

  Although the polymerization initiator used for polymerization is not particularly limited, for example, a radical polymerization initiator can be preferably used. Specific examples include α, α'-azoisobutyronitrile, 2,2'-azobis-2,4-dimethylvaleronitrile, 2,2'-azobismethylisobutyrate, and the like. Among these, in order to obtain a high molecular weight water-soluble polymer (a), it is preferable to use 2,2'-azobismethylisobutyrate.

  The amount of the polymerization initiator used for the polymerization is preferably 0.00003 to 0.002 mol with respect to 1 mol of (meth) acrylic acid. When the amount of the polymerization initiator used is less than 0.00003 mol, the reaction rate becomes slow, which may not be economical. On the contrary, when the amount of the polymerization initiator used exceeds 0.002 mol, the polymerization proceeds rapidly, and the reaction may be difficult to control.

  The reaction temperature in the polymerization is not particularly limited as long as the target component (a) can be obtained, but it is preferably 50 ° C. or higher and 90 ° C. or lower, more preferably 55 ° C. or higher and 75 ° C. or lower. When the reaction temperature is less than 50 ° C., the viscosity of the reaction solution increases and it may be difficult to stir uniformly. Conversely, when the reaction temperature exceeds 90 ° C., the reaction proceeds rapidly, and it may be difficult to control the reaction. The reaction time can be appropriately set depending on the reaction temperature, but it is usually preferably 0.5 to 5 hours.

  After completion of the reaction, the component (a) contained in the water-in-oil emulsified cosmetic according to the present invention can be obtained by heating the reaction solution at 80 ° C. or higher and 130 ° C. or lower to volatilize and remove the solvent. . This is because if the heating temperature is less than 80 ° C., drying may take a long time, and if it exceeds 130 ° C., the solubility of the obtained component (a) in water may be impaired.

The component (a) used in the present invention increases viscosity by adding an electrolyte to a gel composition swollen in water. For example, a neutralized viscous aqueous solution containing 1% of Carbopol 1342 (manufactured by LUBRIZOL ADVANCED MATERIALS), which is a polyalkyl acrylate copolymer similar to component (a), can be obtained by adding 1% of sodium chloride. However, the aqueous solution of component (a) has the property of increasing the viscosity. This is because the former causes aggregation and shrinkage of the polymer due to the addition of sodium chloride, and the viscosity of the entire system decreases, whereas the component (a) has an alkyl group introduced into the polymer in the aqueous solution. It is presumed that the thickening is increased to form a coalescence.

In addition, the component (a) used in the present invention has a characteristic of increasing the viscosity by coexisting with the electrolyte described later, and further has a characteristic that the change in the viscosity value is small with respect to the change in the electrolyte concentration shown below. . Specifically, neutralization containing 1% of component (a) and 0.5% of sodium chloride with respect to viscosity 1 at 25 ° C. of a neutralized viscous aqueous solution containing 1% of component (a) and 1% of sodium chloride The viscosity at 25 ° C. of the viscous aqueous solution is 0.7 or more and 1.2 or less from the viewpoint that it can be easily used for various compounding formulations having different electrolyte concentrations when used in a water-in-oil emulsified cosmetic. Is more preferable and 0.9 or more and 1.0 or less are more preferable.

In addition, the component (a) used in the present invention has a characteristic of increasing viscosity by coexisting with an electrolyte described later, but further has a characteristic that a change in viscosity value with respect to a temperature change is small. Specifically, when the viscosity at 50 ° C. of the neutralized viscous aqueous solution containing 1% of component (a) and 1% of sodium chloride is used in water-in-oil emulsified cosmetics at 25 ° C. In addition, from the viewpoint of being hardly affected by temperature change, it is preferably 0.8 or more and 1.2 or less, and more preferably 0.9 or more and 1.1 or less.

  This is probably because the alkyl group introduced into the component (a) is increased in viscosity by forming an aggregate in the aqueous solution by hydrophobic interaction. In addition, the compound having two or more ethylenically unsaturated groups introduced into the component (a) acts as a cross-linking agent to increase the viscosity, and the degree of freedom of hydrophobic interaction is lowered to influence the temperature. It is inferred that this is reduced.

  The content of the component (a) is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the object and the blending of other components, but is 0.01% or more and 5. It is preferably 0% or less, and more preferably 0.1% or more and 2.5% or less.

The component (b) electrolyte of the present invention is usually blended in order to improve the stability of the water-in-oil type emulsified cosmetic. It is blended for the purpose of increasing the viscosity of the phase. By thickening the inner aqueous phase, it becomes possible to mix stably with the average particle size of the emulsified droplets kept large, and as a result, the skin feels refreshing and non-sticky. By stretching and spreading while maintaining the thickness, it is possible to improve the sustainability of the massage action and to improve the stability over time.

The component (b) electrolyte in the present invention is a substance that, when dissolved in water or other solvent, makes the solution electrically conductive, and can be organic or inorganic as long as it is normally used as a cosmetic. Can be used. Specifically, organic compounds such as amino acids, lactic acid, citric acid, pyrrolidone carboxylic acid, metal salts such as potassium, sodium, magnesium and calcium, inorganic salts such as sodium chloride and magnesium chloride, L-alanine, β -Alanine, L-arginine, L-arginine hydrochloride, L-asparagine monohydrate, L-aspartic acid, polyaspartic acid, L-citrulline, L-cysteine, L-cysteine hydrochloride monohydrate, L- Cystine, L-dopa, L-glutamic acid, L-glutamic acid hydrochloride, L-glutamine, polyglutamic acid, glycine, trimethylglycine, L-histidine, L-histidine hydrochloride monohydrate, L-hydroxyproline, L-isoleucine L-leucine, L-lysine, L-lysine hydrochloride, L-methionine, L-o Amino acids such as nitin hydrochloride, L-proline, L-phenylalanine, L-serine, L-threonine, L-tryptophan, L-tyrosine, L-valine and their derivatives and salts, ascorbic acid, ascorbic acid phosphate, Examples include water-soluble ascorbic acids such as ascorbic acid sulfate, ascorbic acid glucoside, and metal salts such as sodium, potassium, magnesium, and calcium thereof. In addition, glycyrrhizinate, glycyrrhetinate, salicylate, tranexamate, urea, alum, deep sea water, hot spring water, and other naturally derived aqueous solutions containing these electrolytes, deep sea water, hot spring water, etc. Also, naturally-derived aqueous solutions containing these electrolytes can be mentioned. These can be used alone or in combination of two or more. Among these electrolytes, electrolytes containing alkali metal salts or amines are preferable, and sodium chloride, ascorbic acid, lactic acid, amino acids, pyrrolidonecarboxylic acid, glycyrrhizic acid, and water-soluble derivatives thereof, and salts thereof are particularly preferable. Is mentioned.

  The content of the component (b) is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the object and the blending of other constituents. The conductivity (measured with EC METER CM-60G manufactured by TOA) is preferably 50 to 2500 mS / m, more preferably 80 to 2000 mS / m.

The component (c) aqueous component in the present invention is a component constituting the water phase of the water-in-oil emulsified cosmetic, and is light in spreading, reduced stickiness, feeling of use such as refreshing feeling, moisturizing feeling, etc. It is formulated for the purpose of obtaining the skin effect. Specific examples include purified water, polyhydric alcohols such as glycerin, propylene glycol, and butylene glycol, ethanol, and the like, and these can be used alone or in combination. In general, purified water or a combination of purified water and polyhydric alcohol or ethanol is used.

  Although content of a component (c) is suitably determined according to another essential component, it is 20 to 90% in general.

The component (d) in the present invention is a component constituting the oil phase of the water-in-oil emulsified cosmetic and is blended for the purpose of obtaining a skin effect such as a feeling of use such as smoothness and an emollient feeling. As the component (d) of the present invention, the origin of animal oils, vegetable oils, synthetic oils and the like commonly used in cosmetics and the properties of solid oils, semi-solid oils, liquid oils, volatile oils, hydrocarbons, Fats and oils, waxes, hardened oils, ester oils, fatty acids, higher alcohols, fluorinated oils, lanolin derivatives, oily gelling agents, lipophilic surfactants, oil-soluble UV absorbers, etc. Can be blended. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, montan wax, Fischer-Tropsch wax, olive oil, castor oil, mink oil, macadamian nut Oils and fats such as owl, beeswax, carnauba wax, candelilla wax, gewax, jojoba oil and other waxes, isopropyl palmitate, isopropyl myristate, isopropyl stearate, isobutyl stearate 2-ethylhexyl stearate, isopropyl isostearate, butyl isostearate, decyl isostearate, lauryl isostearate, isodecyl isodecanoate, isodecyl isononanoate G, iso Ridecyl isononanoate, isononyl isononanoate, di-2-ethylhexanoic acid neopentyl glycol, di-2-ethylhexanoic acid propylene glycol, tri-2-ethylhexanoic acid glyceryl diisostearate polyglyceryl , Diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol ester of rosin acid, cholesterol fatty acid ester, N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), stearic acid, lauric acid, myristic Higher fatty acids such as acid, behenic acid, isostearic acid, oleic acid, rosin acid, stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol Higher alcohols such as fluorinated oils such as perfluoropolyether, perfluorodecane, perfluorooctane, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin derivatives such as lanolin alcohol, dextrin fatty acid ester, sucrose fatty acid ester, starch Fatty acid esters, 12-hydroxystearic acid, oily gelling agents such as calcium stearate, ethyl aminobenzoate, methoxycinnamic acid-2-ethylhexyl, 4-tert-butyl-4'-methoxydibenzoylmethane, oxybenzone, etc. Oil-soluble UV absorbers, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, dimethylpolysiloxane / methylphenylpolysiloxane copolymer, etc. Degree silicone oil, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane, tetramethyltetraphenylcyclotetrasiloxane etc. cyclic silicone oil, stearoxy silicone etc. Higher alkoxy-modified silicones, higher fatty acid-modified silicones, amino-modified silicones, fluorine-modified silicones and the like can be mentioned, and one or two of these can be appropriately selected and used.
Among these, isotridecyl isononanoate, isononyl isonononanoate, di-2-ethylhexane having two or more branches in the molecule from the viewpoint of excellent emollient effect and good temporal stability. Examples thereof include neopentyl glycol acid and glyceryl tri-2-ethylhexanoate. These may be used alone or in combination of two or more as required.

Furthermore, among these, cyclic silicone oils such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, isotridecyl isononanoate, isononyl isononanoate, neopentyl glycol di-2-ethylhexanoate and tri-2-ethylhexane Among the fatty acid esters selected from glyceryl acid and having two or more branches in the molecule, an oily component containing a mixture of at least two kinds is more preferred.

Content of a component (d) is not specifically limited unless the objective of this invention is impaired, Although it can adjust suitably with the objective and the mixing | blending of another structural component, it is 5.0-50.0. %, More preferably 10.0 to 30.0%.

The component (e) silicone surfactant that can be used in the water-in-oil emulsified cosmetic according to the present invention is formulated for the purpose of stably emulsifying the water-in-oil emulsified cosmetic, and deviates from the purpose. Any of the following may be used as long as it is not.

Component (e) in the present invention has a siloxane chain as an essential skeleton, contains a long chain alkyl group, a long chain alkenyl group, a long chain alkoxy group, etc. as a lipophilic group, and polyoxyethylene, polyoxypropylene as a hydrophilic group If it is a compound containing polyoxyalkylene groups, such as glycerol skeleton, polyglycerol skeleton, etc., it will not specifically limit. The silicone surfactant used in the present invention is preferably a compound having an HLB of 6 or less from the viewpoint of the temporal stability of the water-in-oil emulsion cosmetic.

As a specific example of the component (e) in the present invention, the water-in-oil emulsified cosmetic is provided, wherein the silicone surfactant of the component (e) is the general formula (1) It is.

[Wherein, R ¹ represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, or —C _m H _2m —O— (C ₂ H ₄ O) _d (C ₃ H ₆ O) _e R ⁴ is the same or different organic group selected from organic groups represented by R ⁴ , and R ² is —C _m H _2m —O— (C ₂ H ₄ O) _f (C ₃ H ₆ O). _g— R ⁵ is a polyoxyalkylene group, R ³ is an organosiloxane represented by the general formula (2), and R ⁴ is a hydrocarbon group having 4 to 30 carbon atoms or R ⁶ — (CO) - organic group, ^{R 5} is a hydrocarbon group of a hydrogen atom or a C1-30 ^R 6 represented by - (CO) - organic group represented by, ^{R 6} is a hydrocarbon group having 1 to 30 carbon atoms . a, b and c are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1.5 and 0.001 ≦ c ≦ 1.5, respectively, d and e are 0 ≦ d ≦ 50, An integer of 0 ≦ e ≦ 50, f and g are integers of 2 ≦ f ≦ 200, 0 ≦ g ≦ 200, and f + g is 3 to 200, respectively. M is an integer of 0 ≦ m ≦ 15, h is an integer of 0 ≦ h ≦ 500, and n is an integer of 1 ≦ n ≦ 5. ]

Examples of the polyoxyalkylene-modified organopolysiloxane and / or the alkyl-modified polyoxyalkylene-modified organopolysiloxane include those represented by the following general formulas (3) and (4), and a polyoxyalkylene group in the molecule. Are used, and those having a molecular weight of 2000 or more can be used, and one or more of them can be used. As a commercially available product, for example, as polyoxyalkylene-modified organopolysiloxane, ABIL EM97 (manufactured by EVONIC GOLDSCHMIDT GMBH), KF-6012, KF-6015, KF-6016, KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.), etc. Is mentioned. Examples of the alkyl-modified polyoxyalkylene-modified organopolysiloxane include ABIL EM90 (manufactured by EVONIC GOLDSCHMIDT GMBH).

[Wherein R ⁷ represents an alkyl group having 1 to 5 carbon atoms or a phenyl group. R ^{8 _{is, -Q 1 -O- (C 2 H}} 4 O) a - (C 3 H 6 O) b -R 12 or _{- (C 2 H 4 O)} a - (C 3 H 6 O) b - Represented by R ¹² , Q ¹ represents a divalent hydrocarbon group having 1 to 5 carbon atoms, and R ¹² represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or an acetyl group. a is an integer of 1-50, b is an integer of 0-50. G ¹ and G ² may be the same or different and each represents R ⁷ or R ⁸ . j is an integer of 0 to 150, and k is an integer of 0 to 50. However, when k = 0, at least one of G ^{1 and} G ² is R ⁸ . ]

[Wherein, R ⁹ represents an alkyl group having 1 to 5 carbon atoms or a phenyl group. R ¹¹ is represented by —Q ² —O— (C ₂ H ₄ O) _c — (C ₃ H ₆ O) _d —R ¹³ , and Q ² represents a divalent hydrocarbon group having 1 to 5 carbon atoms. R ¹³ represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or an acetyl group. c is an integer of 1-50, d is an integer of 0-50. R ¹⁰ is represented by — (C ₃ H ₆ O) _e —R ¹⁴ , e is an integer of 0 to 5, and R ¹⁴ is an alkyl group having 6 to 18 carbon atoms. l is an integer of 5 to 150, m is an integer of 5 to 40, and n is an integer of 2 to 40. ]

Examples of the polyglycerin-modified silicone include polyglycerin-modified silicones represented by the following general formula (5).

[Wherein R ¹⁵ is selected from an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, an amino-substituted alkyl group, a carboxyl-substituted alkyl group, or an organic group represented by the following general formula (6). The same or different organic groups.
Wherein a, b and c are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1.5 and 0.001 ≦ c ≦ 1.5, respectively.

[Wherein, d, e and f are integers of 0 ≦ d ≦ 15, 0 ≦ e ≦ 50, and 0 ≦ f ≦ 50, respectively, and R ¹⁶ is a polyglycerin derivative represented by the following general formula (7) and / or (8) It is. ]

[Wherein ^{R 18} is a hydrogen group or an alkyl group having 1 to 30 carbon atoms, or ^R 19 - (CO) - organic group represented ^{by, R 19} is a hydrocarbon group having 1 to 30 carbon atoms. Q represents a C 3-20 divalent hydrocarbon group which may contain an ether bond or an ester bond, s is an integer of 2-20, and t is an integer of 1-20. R ¹⁷ is a silicon-containing group represented by the following general formula (9). ]

[G is an integer of 1 ≦ g ≦ 5, and h is an integer of 0 ≦ h ≦ 500]
The polyglycerin-modified silicone of the present invention can be synthesized by, for example, the method described in JP-A No. 2004-169105 and the like, and commercially available products include KF-6100 and KF-6105 (manufactured by Shin-Etsu Chemical Co., Ltd.). ) And the like.

In addition, silicone KSG-20, 21 which is a crosslinked polyether-modified silicone obtained by crosslinking dimethylhydrogenpolysiloxane with polyoxyethylene having unsaturated groups at both ends, and a long chain alkyl group on the side chain. It is also possible to use KSG-30 (all manufactured by Shin-Etsu Chemical Co., Ltd.) obtained by crosslinking the dimethylmethylhydrogenpolysiloxane having both ends with polyoxyethylene having an unsaturated group.

More preferably, the water-in-oil emulsified cosmetic is characterized in that the silicone-based surfactant of the component (e) is the general formula (1).

The content of the component (e) is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the object and the composition of other components, but is 0.01 to 5.0. %, More preferably 0.1 to 2.5%.

In the present invention, the component (f) polyoxyethylene dipolyhydroxystearate is blended for the purpose of improving the temporal stability and the sustainability of the massage action. By emulsifying the aqueous component using the component (f), a water-in-oil emulsified cosmetic that enables sufficient massage in a thick state and has excellent temporal stability even when spreading to the skin. Fees can be provided.

Component (f) can be obtained by reacting acid chloride prepared by reacting poly (12-hydroxystearic acid) with a halogenating agent such as thionyl chloride and polyethylene glycol in the presence of an alkali. At this time, if the amount of the acid chloride is increased, a dipolyester can be obtained. If the amount is small, a product having a low acylation rate such as a monoester can be obtained. When used for the component (f) of the present invention, the polyethylene glycol preferably has an average molecular weight of 400 to 6000. On the other hand, poly (12-hydroxystearic acid), which is the other component, is a portion that becomes a hydrophobic group in this essential component, and the polymerization degree is preferably an average molecular weight of 1000 to 3000. Some of such polyoxyethylene dipolyhydroxystearates are already commercially available, and such commercially available products can also be used in the present invention. Among such commercially available products, “Aracel P-135” (manufactured by Croda) is particularly preferable. This is a diester of poly (12-hydroxystearic acid) of polyethylene glycol (average molecular weight 1500), which has an average molecular weight of about 5000. In the water-in-oil emulsified cosmetic of the present invention, the polyoxyethylene dipolyhydroxystearate can contain only one species or a combination of two or more species.

The content of the component (f) is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the object and the composition of other components, but is 0.01 to 5.0. %, More preferably 0.1 to 2.5%.

By including the components (a) to (f), the water-in-oil emulsified cosmetic according to the present invention can keep the particle size of the inner aqueous phase large, so that it is fresh and has no stickiness. A water-in-oil emulsified cosmetic with excellent massage sustainability and stability over time can be obtained by extending and spreading to the skin while maintaining the thickness while having a good feeling of use.

In addition to the above components, the water-in-oil emulsified cosmetic of the present invention further includes components used in ordinary cosmetics, for example, surfactants other than components (e) and (f), polymer components, moisturizing components, Cosmetic ingredients, bactericides, preservatives, inorganic powders, organic powders, antioxidants, pigments, fragrances and the like can be used within a range that does not impair the effects of the present invention.

As the production method of the present invention, a water-soluble polymer of component (a) and an electrolyte of component (b) are added to water of component (c), and T.I. K. Stir and swell using HOMODISPER (manufactured by TOKUSHU KIKA). These can be obtained by a dispersion emulsification step while adding component (d) oily component, component (e) silicone surfactant, and optionally component (f) polyoxyethylene dipolyhydroxystearate to the oil phase. it can.

Applications of the water-in-oil emulsified cosmetics of the present invention include emulsions, creams, massage cosmetics, hand creams, body creams, sunscreens and other skin care cosmetics, foundations, makeup bases, control materials, etc. Examples thereof include hair cosmetics such as make-up cosmetics, hair emulsions, and hair creams, and examples of usage thereof include a method of use by hand, a method of impregnation into a non-woven fabric, and the like.

  Next, although an Example is given and this invention is demonstrated further in detail, this invention is not restrict | limited at all by these. First, a synthesis example of the component (a) of the present invention will be given and described in detail. Component (a) of the present invention is not limited to these synthesis examples.

[Synthesis Example 1]
In a 500 mL four-necked flask equipped with a stirrer, a thermometer, a nitrogen blowing tube and a cooling tube, 45 g (0.625 mol) of acrylic acid and (meth) acrylic acid alkyl ester having 18 to 24 carbon atoms in the alkyl group Blemmer VMA70 (manufactured by NOF Corporation: 10-20 parts by mass of stearyl methacrylate, 10-20 parts by mass of eicosanyl methacrylate, 59-80 parts by mass of behenyl methacrylate and tetracosanyl methacrylate content of 1 mass 1.80 g of a mixture of the following parts), 0.05 g of pentaerythritol allyl ether, 150 g of normal hexane and 0.081 g (0.00035 mol) of 2,2′-azobismethylisobutyrate. Subsequently, after stirring and mixing uniformly, nitrogen gas was blown into the solution in order to remove oxygen present in the upper space of the reaction vessel, the raw material and the solvent. Subsequently, it was made to react for 4 hours, hold | maintaining at 60-65 degreeC under nitrogen atmosphere. After the completion of the reaction, the resulting slurry was heated to 90 ° C. to distill off normal hexane, and further dried under reduced pressure at 110 ° C. and 10 mmHg for 8 hours to obtain (meth) acrylic acid / ( 43 g of a meth) acrylic acid alkyl ester copolymer was obtained.

[Synthesis Example 2]
In Synthesis Example 1, (meth) acrylic acid / (meth) acrylic in the form of white fine powder in the same manner as in Example 1 except that the amount of use of Blemmer VMA70 (manufactured by NOF Corporation) was changed to 1.58 g. 44 g of acid alkyl ester copolymer was obtained.

[Synthesis Example 3]
In Synthesis Example 1, (meth) acrylic acid / (meth) acrylic in the form of white fine powder in the same manner as in Example 1 except that the amount of use of Blemmer VMA70 (manufactured by NOF Corporation) was changed to 1.45 g. 45 g of acid alkyl ester copolymer was obtained.

  The component (a) thus obtained may be used as it is in cosmetics, but can also be used after being swollen in water. For example, a swollen product dispersed in pure water such as deionized water and swollen for 1 hour at a homomixer of 3000 to 5000 rotations can be blended in the cleansing cosmetic. Hereinafter, examples and comparative examples of cleansing cosmetics that are products of the present invention using the above synthesis examples will be described.

Examples 1 to 10 and Comparative Examples 1 to 6 Water-in-oil emulsified cosmetics The water-in-oil emulsified cosmetics listed in Tables 1 to 3 below were produced by the production methods shown below. 1) Fresh feeling, 2 Evaluation was made with respect to four items :)) non-stickiness, 3) persistence of massage, and 4) stability over time. The results are shown in Tables 1 to 3.

[Production method]
1. Ingredients (1) to (13) and (22) are uniformly mixed and dissolved and swollen.
2. Components (14) to (21), (23), and (24) are mixed and dissolved uniformly.
By adding 1 to 3.2 and dispersing and emulsifying, the objective water-in-oil emulsified cosmetic was obtained. The emulsified droplets were adjusted to an average particle size of 5 μm.

[Evaluation methods]
The water-in-oil emulsified cosmetics prepared according to the formulations shown in Tables 1 to 3 were evaluated by the methods shown below. 20 expert panels put 2 g of the water-in-oil emulsified cosmetic on both cheeks, massaged while drawing a circle with both hands, and evaluated the use. The evaluation contents and scores for each evaluation were as follows.

[Evaluation 1] 4 fresh feelings: very fresh.
3 points: It was fresh.
2 points: Not so fresh.
1 point: It was not fresh.

[Evaluation 2] No stickiness 4 points: No stickiness.
3 points: Little sticky.
2 points: Sticky.
1 point: Very sticky.

[Evaluation 3] Sustainability of massage action 4 points: The massage could be continued for 6 minutes or more.
3 points: The massage could be continued for 4 minutes or more.
2 points: The massage could be continued for 2 minutes or more.
1 point: The massage could not be continued.

  The scores of the evaluation results for each evaluation were totaled and evaluated according to the following evaluation criteria. In addition, in this invention, the evaluation of B or more which is 50 points or more was preferable with respect to evaluation of 80 perfect marks.

[Evaluation criteria]
(Evaluation): (Score)
A: 70 points or more A: 60 points or more and 69 points or less B: 50 points or more and 59 points or less C: 40 points or more and 49 points or less D: 30 points or more and 39 points or less E: 29 points or less

[Evaluation 4] Stability over time 40 mL of the water-in-oil emulsified cosmetics shown in Tables 1 to 3 are poured into a wide-mouth standard bottle (PS-No. 6), the cap is closed, and the mixture is left in a 50 ° C. constant temperature bath for 1 month. Then, the separation was visually observed and judged according to the following criteria.
(Criteria): (Judgment)
No separation is allowed: ◎
Separated layer is less than 1 mm and has no problem: ○
The level at which the separated layer is 1 mm or more and 5 mm or less is a problem: Δ
The separated layer is 5 mm or more: ×

As is clear from the evaluation results in Tables 1 to 3, Examples 1 to 10 according to the present invention are fresh and have a refreshing feeling of use without stickiness, but extend to the skin while maintaining the thickness. As a result, it was possible to obtain an effect that was excellent in the sustainability of the massage action and excellent in stability over time. In contrast, in Comparative Example 1, the water-soluble polymer in the inner aqueous phase is agglomerated and contracted by the electrolyte, so that the massage action is not sustainable. Furthermore, since it became remarkable, the temporal stability was insufficient. Further, in Comparative Examples 5 and 6, there was stickiness peculiar to xanthan gum and carboxymethyl cellulose. Moreover, since the comparative example 7 was not excellent in the temporal stability of a component (a) and the viscosity increase was inadequate, it was inferior to the massage effect.

Example 11 Solid water-in-oil foundation
(Ingredient) (%)
1. Organically modified smectite 1.0
2. Ethanol 5.0
3. 1,3-butylene glycol 5.0
4). Water-soluble polymer (a) of Synthesis Example 1 1.0
5. Sodium chloride 0.5
6). Citric acid appropriate amount 7. Sodium citrate appropriate amount 8. Perfume appropriate amount 9. Purified water remaining amount 10. Preservative appropriate amount11. Barium sulfate coated mica titanium 1.5
12 Silicone-coated titanium oxide 7.5
13. Silicone-coated yellow iron oxide 0.4
14 Silicone coated bengara 0.07
15. Silicone-coated black iron oxide 0.01
16. PEG-9 polydimethylsiloxyethyl dimethicone * 3 2.0
17. Polyoxyethylene dipolyhydroxystearate * 6 1.0
18. Octamethylcyclotetrasiloxane 7.0
19. Isononyl isononanoate 0.0
20. Isotridecyl isononanoate 3.0
21. Sucrose fatty acid ester 1.0
22. Candelilla wax 4.0
23. Microcrystalline wax 2.0
24. Tocopherol acetate 0.05
* 6 Aracel P-135 (Crowda)

(Production method)
A: Components 1 to 10 are uniformly dissolved at 70 ° C.
B: Components 11 to 24 are mixed uniformly at 70 ° C.
C: A is added to B and emulsified.
D: Pour into a container at 70 ° C. and allow to cool after filling.

The solid water-in-oil foundation of Example 11 of the present invention obtained as described above was fresh, non-sticky, had a good makeup effect, and had good stability over time.

Example 12 Cosmetic liquid (ingredient) (%)
(1) Polyoxyalkylene-modified organopolysiloxane * 7 1.5
(2) Alkyl modified polyoxyalkylene modified
Organopolysiloxane * 4 1.0
(3) Sorbitan sesquiisostearate 0.5
(4) Decamethylcyclopentasiloxane 10.0
(5) Isononyl isomyristate 8.0
(6) Perfluoropolyether 0.5
(7) Methyl paraoxybenzoate Appropriate amount (8) Fragrance Appropriate amount (9) Dextrin fatty acid ester 1.0
(10) Purified water Remaining amount (11) Water-soluble polymer of Synthesis Example 3 (a) 2.0
(12) Glycerin 3.0
(13) Propylene glycol 10.0
(14) Ascorbic acid 2-glucoside 2.0
(15) Citric acid appropriate amount (16) Sodium citrate appropriate amount * 6 KF-6015 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
A. Components (1) to (9) are mixed and dispersed at room temperature.
B. Components (10) to (16) are mixed and dispersed at room temperature.
C. B was gradually injected into A and emulsified, and then defoamed to obtain a serum.

This beauty liquid was fresh, non-sticky, excellent in beauty effect, and good in stability over time.

Example 13 Moisturizing pack charge
(Ingredient) (%)
(1) Alkyl modified polyoxyalkylene modified
Organopolysiloxane * 4 3.0
(2) Decamethylcyclopentasiloxane 5.0
(3) Isotridecyl isononanoate 15.0
(4) Liquid paraffin 1.0
(5) Microcrystalline wax 0.5
(6) Methyl paraoxybenzoate Appropriate amount (7) Fragrance Appropriate amount (8) Silicone-treated titanium oxide 5.0
(9) Silicone-treated iron oxide 0.2
(10) Nylon powder 1.0
(11) Ethanol 3.0
(12) Purified water Residual amount (13) Water-soluble polymer of Synthesis Example 2 (a) 3.0
(14) Diglycerin 3.0
(15) 1,3-butylene glycol 15.0
(16) Sodium lactate 1.0
(17) Red 106 No.

(Manufacturing method)
A. Components (1) to (10) are mixed and dispersed at 60 ° C.
B. Components (11) to (17) are mixed and dispersed at 60 ° C.
C. B was gradually injected into A and emulsified, and then cooled and defoamed to obtain a moisturizing pack.

This moisturizing pack was fresh and non-sticky, had an excellent moisturizing effect after use, and had good stability over time.

Example 14 Sunscreen (component) (%)
(1) Polyoxyalkylene-modified organopolysiloxane * 6 1.0
(2) Dimethylpolysiloxane 5.0
(3) Octamethylcyclotetrasiloxane 20.0
(4) Glyceryl tri-2-ethylhexanoate 5.0
(5) Octyl methoxycinnamate 5.0
(6) Methyl paraoxybenzoate Appropriate amount (7) Fragrance Appropriate amount (8) Silicone-treated fine particle titanium oxide 10.0
(9) Silicone-treated fine particle zinc oxide 10.0
(10) Trimethylsiloxysilicate 0.5
(11) Ethanol 10.0
(12) Purified water remaining amount (13) Water-soluble polymer of Synthesis Example 3 (a) 1.0
(14) 1,2-pentanediol 1.0
(15) Sodium chloride 0.2

(Production method)
A. Components (1) to (10) are mixed and dispersed at room temperature.
B. Components (11) to (15) are mixed and dispersed at room temperature.
C. B was gradually injected into A and emulsified, and then defoamed to obtain a sunscreen lotion.

This sunscreen lotion was fresh, non-sticky, and had good stability over time.

Example 15 Cream Eye Shadow (Ingredient) (%)
(1) Polyglycerin-modified silicone * 8 1.0
(2) Dimethylpolysiloxane 7.0
(3) Octamethylcyclotetrasiloxane 10.0
(4) Isostearyl isononanoate 6.0
(5) Methyl paraoxybenzoate appropriate amount (6) Cetanol 0.5
(7) Beeswax 1.0
(8) Perfume appropriate amount (9) Palmitic acid-treated titanium oxide 2.0
(10) Palmitic acid-treated iron oxide 0.2
(11) Palmitic acid-treated mica titanium 10.0
(12) Ethanol 8.0
(13) Purified water Remaining amount (14) Water-soluble polymer of Synthesis Example 1 (a) 3.0
(15) Dipropylene glycol 3.0
(16) Sodium chloride 2.0
* 8 KF-6105 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
A. Components (1) to (11) are mixed and dispersed at 50 ° C.
B. Components (12) to (16) are mixed and dispersed at 50 ° C.
C. B was gradually injected into A and emulsified, and then cooled and defoamed to obtain a cream eye shadow.

This cream eye shadow
It was fresh and non-sticky, had an excellent makeup effect, and had good stability over time.

Claims (6)

The following components (a) to (e):
Component (a): A copolymer comprising acrylic acid or methacrylic acid, acrylic acid alkyl ester or methacrylic acid alkyl ester, and a compound having two or more ethylenically unsaturated groups, and an electrolyte. Water-soluble polymer component (b) that exhibits thickening when contained (b): electrolyte component (c): aqueous component component (d): oily component component (e): containing a silicone-based surfactant A water-in-oil emulsified cosmetic. Content of a component (a) is 0.01-5.0 mass%, The water-in-oil type emulsified cosmetics of Claim 1 characterized by the above-mentioned. The water-in-oil emulsified cosmetic according to claim 1 or 2, wherein the silicone surfactant of component (e) is represented by the following general formula (1).
[Wherein, R ¹ represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, or —C _m H _2m —O— (C ₂ H ₄ O) _d (C ₃ H ₆ O) _e R ⁴ is the same or different organic group selected from organic groups represented by R ⁴ , and R ² is —C _m H _2m —O— (C ₂ H ₄ O) _f (C ₃ H ₆ O). _The polyoxyalkylene group represented by _g- R ⁵ , R ³ represents the following general formula (2)
R ⁴ is a hydrocarbon group having 4 to 30 carbon atoms or an organic group represented by R ^6- (CO)-, R ⁵ is a hydrogen atom or a hydrocarbon having 1 to 30 carbon atoms A group or an organic group represented by R ⁶ — (CO) —, R ⁶ is a hydrocarbon group having 1 to 30 carbon atoms. a, b and c are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1.5 and 0.001 ≦ c ≦ 1.5, respectively, d and e are 0 ≦ d ≦ 50, An integer of 0 ≦ e ≦ 50, f and g are integers of 2 ≦ f ≦ 200, 0 ≦ g ≦ 200, and f + g is 3 to 200, respectively. M is an integer of 0 ≦ m ≦ 15, h is an integer of 0 ≦ h ≦ 500, and n is an integer of 1 ≦ n ≦ 5. ] The water-in-oil emulsified cosmetic according to any one of claims 1 to 3, further comprising component (f): polyoxyethylene dipolyhydroxystearate. The water-in-oil emulsified cosmetic according to any one of claims 1 to 4, wherein the cosmetic is a massage cosmetic. Component (a) is 95.42 to 97.48% by mass of (meth) acrylic acid, 2.43 to 4.30% by mass of (meth) acrylic acid alkyl ester having 18 to 24 carbon atoms in the alkyl group, and ethylene. 6. A (meth) acrylic acid / (meth) acrylic acid alkyl ester copolymer which is 0.08 to 0.29% by mass of a compound having two or more polymerizable unsaturated groups. The water-in-oil emulsified cosmetic according to any one of the items.