JP4219857B2 - Eyelash cosmetic - Google Patents

Description

  The present invention relates to a cosmetic for eyelashes, and in particular, to a curling effect, an improvement in makeup-holding effect, and an improvement in coating feeling.

  Cosmetics for eyelashes represented by mascara, etc. have effects such as making the eyelashes darker and longer, giving the eyelashes a volume feel, makeup retention (water resistance, sebum resistance), curling effect (fast drying and eyelashes) Various effects from the functional aspect such as curling and upward effect) and curl holding effect (effect of maintaining curl over time) are required.

  Conventionally, natural latex, a water-soluble polymer, a polymer emulsion, or the like has been used as a film-forming component for the purpose of enhancing the curling effect and the makeup of eyelash cosmetics. However, these film-forming components have insufficient water resistance and have the drawback of being easily removed by water, sweat, tears, and the like. On the other hand, many blended solid oils such as solid paraffin, wax and lanolin derivatives are also used, but these are excellent in water resistance, but are inferior in oil resistance, so sebum and other cosmetics, etc. There was a problem of being dissolved in the oil.

  In response to such problems, makeup cosmetics in which an organic silicone resin is blended as a film-forming component have been developed in recent years (see, for example, Patent Documents 1 to 3). This organosilicone resin is completely insoluble in water or oils normally contained in sebum and cosmetics, and forms a strong film after drying. It is possible to obtain eyelash cosmetics that are both effective and have long lasting makeup.

  However, although cosmetics for eyelashes using an organic silicone resin have functions that are somewhat superior in terms of curling effect and long-lasting makeup, they produce a remarkable film feeling due to the organic silicone resin that is a film forming component. Therefore, there was a problem in terms of use feeling. On the other hand, when the blending amount of this organic silicone resin is reduced, the film feeling is good, but the curl effect and the effect of improving makeup durability are not sufficiently obtained, and both functions are performed simultaneously. It was a very difficult problem.

JP 61-18708 A JP-A-61-65809 Japanese Patent Laid-Open No. 61-162111

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a cosmetic for eyelashes that is excellent in curling effect and long-lasting makeup and has an improved film feeling.

  As a result of intensive studies conducted by the present inventors in view of the above-mentioned problems, a copolymer polymer containing an acrylic acid monomer, a polyoxyalkylene group-containing monomer, and an organopolysiloxane-containing monomer in a specific ratio is obtained. Incorporating into the eyelash cosmetics as a film-forming component, the curl effect and makeup lasting are extremely excellent, and the film feeling is remarkably improved as compared with the case of using a conventional film-forming component. As a result, the present invention has been completed.

（上記式中、Ｒ^１は水素、又は炭素数１〜３の炭化水素基を表し、Ｒ^２は水素、又は炭素数１〜２４の炭化水素基を表す。）

（上記式中、Ｒ^３は水素、又は炭素数１〜３の炭化水素基、Ｒ^４は炭素数１〜４の２価炭化水素基、Ｒ^５は水素、又は炭素数１〜２４の炭化水素基を表し、ｌは１〜５０の整数を表す。）

（上記式中、Ｒ^６は水素、又は炭素数１〜３の炭化水素基、Ｒ^７は炭素数１〜４の２価炭化水素基、Ｒ^８は炭素数１〜６の炭化水素基を表し、ｍは０〜５００、ｎは１〜３の整数を表す。） That is, the cosmetic for eyelashes according to the present invention is represented by a monomer (A) represented by the following general formula (1), a monomer (B) represented by the following general formula (2), and the following general formula (3). The monomer (C) is contained as a constituent monomer, and the content of the monomer (A) is 20% by mass or more based on the total amount of the constituent monomers.

(In the above formula, R ¹ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, and R ² represents hydrogen or a hydrocarbon group having 1 to 24 carbon atoms.)

(In the above formula, R ³ is hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁴ is a divalent hydrocarbon group having 1 to ⁴ carbon atoms, R ⁵ is hydrogen or a hydrocarbon having 1 to 24 carbon atoms. Represents a group, and l represents an integer of 1 to 50.)

(In the above formula, R ⁶ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁷ represents a divalent hydrocarbon group having 1 to 4 carbon atoms, and R ⁸ represents a hydrocarbon group having 1 to 6 carbon atoms. M represents 0 to 500, and n represents an integer of 1 to 3.)

  The eyelash cosmetic is preferably a water-in-oil eyelash cosmetic containing the copolymer and an oil in the outer phase and water in the inner phase. Further, in the water-in-oil eyelash cosmetic, the outer phase contains the copolymer 1 to 30%, volatile silicone oil and / or hydrocarbon oil, water in the inner phase, and film-forming ability. It is preferable to contain a certain emulsion resin.

  The eyelash cosmetic is preferably an oil-in-water eyelash cosmetic containing the copolymer and oil in the inner phase and water in the outer phase. In the oil-in-water eyelash cosmetic, the inner phase contains 1 to 30% of the copolymer and volatile silicone oil and / or hydrocarbon oil, and the outer phase has water and film-forming ability. It is preferable to contain an emulsion resin.

  The eyelash cosmetic is preferably an oily eyelash cosmetic containing the copolymer and a wax. The oily eyelash cosmetic preferably contains 1 to 30% of the copolymer, wax, volatile silicone oil and / or hydrocarbon oil, and a thickener. In the oily eyelash cosmetic, it is preferable to further contain a hollow powder.

  The eyelash cosmetic according to the present invention has a curl effect and a long-lasting cosmetic effect as compared with conventional cosmetics for eyelashes by blending a copolymer polymer having a specific structure. Is significantly improved.

（上記式中、Ｒ^１は水素、又は炭素数１〜３の炭化水素基を表し、Ｒ^２は水素、又は炭素数１〜２４の炭化水素基を表す。）

（上記式中、Ｒ^３は水素、又は炭素数１〜３の炭化水素基、Ｒ^４は炭素数１〜４の２価炭化水素基、Ｒ^５は水素、又は炭素数１〜２４の炭化水素基を表し、ｌは１〜５０の整数を表す。）

（上記式中、Ｒ^６は水素、又は炭素数１〜３の炭化水素基、Ｒ^７は炭素数１〜４の２価炭化水素基、Ｒ^８は炭素数１〜６の炭化水素基を表し、ｍは０〜５００、ｎは１〜３の整数を表す。） Hereinafter, preferred embodiments of the present invention will be described in detail.
The copolymer polymer used in the cosmetic for eyelashes according to the present invention includes a monomer (A) represented by the following general formula (1), a monomer (B) represented by the following general formula (2), and the following general formula: The monomer (C) represented by (3) is contained as a constituent monomer, and the content of the monomer (A) is adjusted so as to be 20% by mass or more based on the total amount of the constituent monomers.

(In the above formula, R ¹ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, and R ² represents hydrogen or a hydrocarbon group having 1 to 24 carbon atoms.)

(In the above formula, R ³ is hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁴ is a divalent hydrocarbon group having 1 to ⁴ carbon atoms, R ⁵ is hydrogen or a hydrocarbon having 1 to 24 carbon atoms. Represents a group, and l represents an integer of 1 to 50.)

(In the above formula, R ⁶ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁷ represents a divalent hydrocarbon group having 1 to 4 carbon atoms, and R ⁸ represents a hydrocarbon group having 1 to 6 carbon atoms. M represents 0 to 500, and n represents an integer of 1 to 3.)

The monomer (A) represented by the general formula (1) is an alkyl-substituted acrylic acid such as acrylic acid or methacrylic acid, or an alkyl ester thereof. In the general formula (1), R ¹ is a substituent of acrylic acid α carbon is hydrogen or a hydrocarbon group having 1 to 3 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and the like, and may be either linear or branched. R ¹ is particularly preferably hydrogen or a methyl group. In the general formula (1), R ² is a terminal substituent of acrylic acid is hydrogen or a hydrocarbon group having 1 to 24 carbon atoms. Examples of the hydrocarbon group include an alkyl group and an alkenyl group, which may be linear or branched and may be partially substituted with a hydroxyl group or a fluorine atom. Examples of R ² include a hydrogen atom, methyl group, ethyl group, propyl group, butyl group, hexyl group, 2-ethylhexyl group, decyl group, tridecyl group, stearyl group, isostearyl group, 2-hydroxyethyl group, 2 -A hydroxypropyl group, a trifluoromethyl group, a trifluoroethyl group, etc. are mentioned. Particularly preferred are a hydrogen atom, a methyl group, a butyl group, a 2-ethylhexyl group, a tridecyl group, a stearyl group, and an isostearyl group.

Examples of the monomer (A) used in the present invention include acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, decyl acrylate, and lauryl acrylate. , Alkyl acrylates such as stearyl acrylate, methacrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, octyl methacrylate, decyl methacrylate, dodecyl methacrylate, methacrylic acid Examples include methacrylic acid alkyl esters such as tridecyl, stearyl methacrylate, and isostearyl methacrylate.
In the copolymer polymer used in the present invention, one or more of the monomers (A) can be used as a constituent monomer.

    In the copolymer used in the present invention, the content of the monomer (A) needs to be 20% by mass or more based on the total amount of the constituent monomers. When the content of the monomer (A) is less than 20% by mass with respect to the total amount of the constituent monomers, the film forming ability may be lowered. Moreover, it is suitable that content of a monomer (A) is 20-60 mass%, Most preferably, it is 25-50 mass%.

The monomer (B) represented by the general formula (2) is a compound having an oxyalkylene moiety in an alkyl-substituted acrylic acid such as acrylic acid or methacrylic acid. For example, an alkylene glycol of acrylic acid or alkyl-substituted acrylic acid Esters or their alkyl ethers. In general formula (2), R ³ is a substituent of acrylic acid α carbon is hydrogen or a hydrocarbon group having 1 to 3 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and the like, and may be either linear or branched. R ³ is particularly preferably hydrogen or a methyl group. In the general formula (2), R ⁴ is a hydrocarbon moiety in the oxyalkylene group is a divalent hydrocarbon group having 1 to 4 carbon atoms. Examples of the divalent hydrocarbon group include an alkylene group, which may be linear or branched. R ⁴ may be the same or different. For example, the oxyalkylene moiety is a block-like or random repeating structure composed of two or more oxyalkylene groups having R ⁴ having different carbon numbers. Also good. R ⁴ is particularly preferably an ethylene group. In the general formula (2), R ⁵ is a terminal substituent of the oxyalkylene group is hydrogen or a hydrocarbon group having 1 to 24 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and the like, and may be either linear or branched. R ⁵ is particularly preferably hydrogen or a methyl group. Moreover, in General formula (2), l showing the number of repeating units of an oxyalkylene group is an integer of 1-50. l is particularly preferably 1-20.

Examples of the monomer (B) used in the present invention, for _{example, CH 2 = C (CH 3} ) COO (C 2 H 4 O) 6 H, CH 2 = C (CH 3) COO (C 2 H 4 O) 8 _{H, CH 2 = C (CH} 3) COO (C 2 H 4 O) 10 H, CH 2 = C (CH 3) COO (C 2 H 4 O) 15 H, CH 2 = C (CH 3) COO ( _{C 2 H 4 O) 6 CH} 3, CH 2 = C (CH 3) COO (C 2 H 4 O) 8 CH 3, CH 2 = C (CH 3) COO (C 2 H 4 O) 10 CH 3, _{CH 2 = C (CH 3)} COO (C 2 H 4 O) 15 C 4 H 9, CH 2 = CHCOO (C 2 H 4 O) 6 H, CH 2 = CHCOO (C 2 H 4 O) 8 H, _{CH 2 = CHCOO (C 2 H} 4 O) 10 H, CH 2 = CHCOO (C 2 H _{O) 15 H, CH 2 =} CHCOO (C 2 H 4 O) 6 CH 3, CH 2 = CHCOO (C 2 H 4 O) 8 CH 3, CH 2 = CHCOO (C 2 H 4 O) 10 CH 3, _{CH 2 = CHCOO (C 2 H} 4 O) 15 C 4 H 9, CH 2 = CHCOO (C 2 H 4 O) 10 (C 3 H 6 O) 10 C 12 H 25, CH 2 = C (CH 3) _{COO (C 2 H 4 O)} 30 (C 3 H 6 O) 10 C 18 H 37 and the like.
In the copolymer polymer used in the present invention, one or more of the monomers (B) can be used as a constituent monomer.

  In the copolymer used in the present invention, the content of the monomer (B) is not particularly limited, but is preferably 0.1 to 50% by mass with respect to the total amount of the constituent monomers. . When the content of the monomer (B) is less than 0.1% by mass with respect to the total amount of the constituent monomers, the film feeling may become strong, and when it exceeds 50% by mass, the film forming ability may be lowered. Moreover, it is especially suitable that content of a monomer (B) is 1-40 mass%.

The monomer (C) represented by the general formula (1) is a compound having an organopolysiloxane moiety in alkyl-substituted acrylic acid such as acrylic acid or methacrylic acid. For example, acrylic acid or alkyl-substituted acrylic acid An ester in which an organopolysiloxane is linked via a divalent hydrocarbon group. In General formula (3), R < ⁶ > which represents the substituent of (alpha) acrylic acid carbon is hydrogen or a C1-C3 hydrocarbon group. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and the like, and may be either linear or branched. R ⁶ is particularly preferably hydrogen or a methyl group. In the general formula (3), R ⁷ is a hydrocarbon group linking sites acrylic acid and organopolysiloxane site is a divalent hydrocarbon original 1 to 4 carbon atoms. Examples of the divalent hydrocarbon group include an alkylene group, which may be linear or branched. R ⁷ is particularly preferably a propylene group. In the general formula (3), R ⁸ is the side chain substituent groups of the organopolysiloxane group is a hydrocarbon group having 1 to 6 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, a fluoroalkyl group, and the like, and may be either linear or branched. R ⁸ may be the same or different. For example, only a part of terminal R ⁸ may be a hydrocarbon group having a different carbon number. R ⁸ is particularly preferably a methyl group, a phenyl group, or a trifluoropropyl group. Moreover, in General formula (3), m showing the repeating unit number of an organosiloxy group is an integer of 0-500. m is particularly preferably 0 to 200. Moreover, in General formula (3), n showing the substitution frequency of an organosiloxy group is an integer of 1-3.

As the monomer (C) used in the present invention, for _{example, CH 2 = C (CH 3} ) COOC 3 H 6 Si {OSi (CH 3) 3} 3, CH 2 = C (CH 3) COOC 3 H 6 { _{Si (CH 3) 2 O}} 20 Si (CH 3) 3, CH 2 = C (CH 3) COOC 3 H 6 {Si (CH 3) 2 O} 40 Si (CH 3) 2 C 4 H 9, CH _{2 = C (CH 3) COOC} 3 H 6 {Si (CH 3) 2 O} 100 Si (CH 3) 2 C 4 H 9, CH 2 = C (CH 3) COOC 3 H 6 {Si (CH 3) _{2 O} 100 {Si (C} 6 H 5) 2 O} 20 Si (CH 3) 2 C 4 H 9, CH 2 = C (CH 3) COOC 3 H 6 {Si (CH 3) 2 O} 150 { _{Si (CH 3) (C 2} H 4 CF 3) O _{50 Si (CH 3) 2 C} 4 H 9 and the like.
In the copolymer polymer used in the present invention, one or more of the monomers (C) can be used as a constituent monomer.

  In the copolymer used in the present invention, the content of the monomer (C) is not particularly limited, but is preferably 30 to 80% by mass with respect to the total amount of the constituent monomers. When the content of the monomer (C) is less than 30% by mass relative to the total amount of the constituent monomers, the solubility with the silicone component may deteriorate in the formulation, and when it exceeds 80% by mass, the film forming ability is low. There is a case. Moreover, it is especially suitable that content of a monomer (C) is 40-70 mass%.

  Moreover, if it is a range which does not impair the effect of this invention, monomers other than said (A)-(C) can also be contained as a constituent monomer. Content should just be the range of 50 mass% or less of a constituent monomer total amount, for example, can contain about 0.0001-10 mass%. Examples of such monomers include ethylene, propylene, butadiene, styrene, vinyl chloride, vinylidene chloride, vinyl alcohol, vinyl acetate, maleic anhydride, acrylonitrile, acrylamide, methacrylamide, methyl acrylamide, methyl methacrylamide, dimethyl methacrylamide. , Ethylacrylamide, ethylmethacrylamide, diethylmethacrylamide, N-isopropylacrylamide, N-vinylpyrrolidone, ε-caprolactam, N, N′-dimethylaminoethylmethacrylic acid, diallyldimethylammonium chloride, 2-acrylamido-2-methylpropane Examples thereof include sodium sulfonate.

  The copolymer used for this invention can be obtained by superposing | polymerizing using the said monomer (A)-(C) using a well-known polymerization method. As the polymerization method, for example, a homogeneous solution polymerization method, a heterogeneous solution polymerization method, an emulsion polymerization method, a reverse phase emulsion polymerization method, a bulk polymerization method, a suspension polymerization method, a precipitation polymerization method and the like can be used. For example, in the case of homogeneous solution polymerization, the monomers (A) to (C) are dissolved in a solvent with an appropriate monomer composition, and a radical polymerization initiator is added and stirred under heating in a nitrogen atmosphere. Can be obtained. A copolymer can also be obtained by a post-modification method using polyacrylic acid and adding an appropriate functional group later.

  As the solvent used in the polymerization, any solvent can be used as long as it can dissolve or suspend each monomer. For example, alcohols such as methanol, ethanol, propyl alcohol, isopropyl alcohol, and butyl alcohol can be used. Solvents, hexane, heptane, octane, isooctane, decane, liquid solvents such as liquid paraffin, ether solvents such as dimethyl ether, diethyl ether, tetrahydrofuran, ketone solvents such as acetone, methyl ethyl ketone, methyl acetate, ethyl acetate, acetic acid In addition to ester solvents such as butyl and chloride solvents such as methylene chloride, chloroform and carbon tetrachloride, dimethylformamide, diethylformamide, dimethylsulfoxide, dioxane and the like can be mentioned. Two or more of these solvents may be mixed and used. Usually, it is suitable to select a solvent having a boiling point higher than the starting temperature of the polymerization initiator to be used.

  The polymerization initiator is not particularly limited as long as it has the ability to initiate radical polymerization. For example, peroxide such as benzoyl peroxide, azobisisobutyronitrile (AIBN), 2,2′-azobis (Isobutyric acid) In addition to azo compounds such as dimethyl, persulfuric acid polymerization initiators such as potassium persulfate and ammonium persulfate may be mentioned. In addition, it can superpose | polymerize by photochemical reaction, radiation irradiation, etc. irrespective of these polymerization initiators. The polymerization temperature is not less than the polymerization start temperature of each polymerization initiator. For example, in the case of a peroxide-based polymerization initiator, it may be usually about 70 ° C.

  The polymerization time is not particularly limited, but is usually 2 to 24 hours. When it is desired to obtain a relatively high molecular weight polymer, it is desirable to react for about one day. If the reaction time is too short, unreacted monomers may remain and the molecular weight may be relatively small. The average molecular weight of the copolymer used in the present invention is not particularly limited, but in particular, the average molecular weight is preferably about 10,000 to 200,000. In addition, in the copolymer molecule used in the present invention, the order in which the monomers (A) to (C) are added is not particularly specified, and even if they are added in blocks, they are added randomly. However, usually, a copolymer in which the monomers (A) to (C) are randomly added can be obtained.

An example of a typical copolymer used in the present invention is shown in the following general formula (4).

In the general formula (4), R ^{1 to} R ⁸ , l, m, and n are as defined above. a, b, and c represent the mass proportions of the monomer (A), monomer (B), and monomer (C) in the total amount of the constituent monomers. In the general formula (4), “a” representing the mass ratio of the monomer (A) to be the total amount of the constituent monomers is adjusted to be 20 mass% or more.

  In the cosmetics for eyelashes according to the present invention, the blending amount of the copolymer polymer is not particularly limited and can be used by appropriately adjusting the blending amount according to the purpose of use. It is suitable that it is 1.0-30.0 mass% with respect to the total amount of, and also 3.0-25.0 mass%. When the blending amount of the copolymer is less than 1.0% by mass, the curling effect and the improvement effect of the makeup durability may not be recognized. On the other hand, when it exceeds 30.0% by mass, a remarkable coating feeling is obtained. You may feel it.

According to the present invention, by blending the copolymer polymer produced as described above in the eyelash cosmetic, the curling effect and makeup of the eyelash cosmetic are improved, and the film feeling is improved. Is.
In addition, in the cosmetic for eyelashes according to the present invention, in addition to the copolymer polymer which is an essential component, components usually used in cosmetics and pharmaceuticals can be blended within a range that does not impair the effects of the present invention. it can.

  As a general cosmetic for eyelashes, a water-in-oil type or liquid-in-oil type emulsified base mainly composed of a liquid oil and water, or an oily component such as a solid oil or a volatile liquid oil is used. There are oil-based bases (not containing water) as the main component, but the dosage form of the cosmetics for eyelashes of the present invention is not limited to any of these, and the dosage form according to the application is appropriately selected Can be used. That is, the cosmetic for eyelashes according to the present invention may have any dosage form of a water-in-oil emulsion base, an oil-in-water emulsion base, and an oily base.

  For example, a water-in-oil eyelash cosmetic according to the present invention contains the copolymer polymer and an oil in an oil phase that is an outer phase, and water in an aqueous phase that is an inner phase. is there. The oil-in-water cosmetic for eyelashes according to the present invention contains the copolymer polymer and an oil in an oil phase that is an internal phase, and water in an aqueous phase that is an external phase. .

  In the water-in-oil type and oil-in-water type eyelash cosmetics according to the present invention, it is preferable to mix volatile silicone oil or hydrocarbon oil in the oil phase which is the outer phase or the inner phase. Examples of the volatile silicone oil used in the present invention include linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethyl. And cyclic polysiloxanes such as cyclohexasiloxane and tetramethyltetrahydrogencyclotetrasiloxane. Moreover, when these product examples are given, for example, KF96A-0.65, KF96A-1, KF96A-1.5, KF994, KF995, KF9937 (Shin-Etsu Chemical Co., Ltd.), SH200-1cs, SH200-1.5cs, SH200-2cs (Toray Dow Corning Silicone), TSF404, TSF405, TSF4045 (Toshiba Silicone) and the like.

  In the water-in-oil type and the oil-in-water eyelash cosmetics according to the present invention, one or more of the volatile silicone oils may be selected and blended. The blending amount of the volatile silicone oil is preferably 1.0 to 40.0% by mass, more preferably 5.0 to 30.0% by mass, based on the total amount of the eyelash cosmetic. If the amount of the volatile silicone oil is too small, the drying rate of the mascara solution may be too fast and difficult to apply to the eyelashes. Mascara may be easily attached to the edge.

  In addition, as the volatile hydrocarbon oil used in the present invention, either a linear or branched one may be used. For example, Isopar (registered trademark) A, C , D, E, G, H, K, L, M (Exxon), Shellzole (registered trademark) 71 (Shell), Saltrol (registered trademark) 100, 130, 220 (Philip), Isozole (registered trademark) 400 (Nippon Petrochemical), Parream (registered trademark) 4 (Nippon Yushi), IP Solvent (registered trademark) 1620, 2028 (Idemitsu Petrochemical), Iso Hexadecane, tetraisobutane 90 (Bayer), Permethyl (registered trademark) 99A, 101A, 102A (Press Perth).

  In the water-in-oil type and the oil-in-water type eyelash cosmetic according to the present invention, one or more of the volatile hydrocarbon oils may be selected and blended. The blending amount of the volatile hydrocarbon oil is preferably 1.0 to 40.0% by mass, and more preferably 5.0 to 30.0% by mass with respect to the total amount of the eyelash cosmetic. If the amount of volatile hydrocarbon oil is too small, the drying rate of the mascara liquid may be too fast and difficult to apply to the eyelashes. Mascara may be easily applied to the edge of the eyes.

  In the water-in-oil type and oil-in-water type eyelash cosmetics according to the present invention, it is preferable that an emulsion resin capable of forming a film is blended in an aqueous phase that is an internal phase or an external phase. The film-forming emulsion resin used in the present invention is polymerized by, for example, a soap-free polymerization method using a reactive emulsifier, an aqueous medium heterogeneous polymerization method not containing an emulsifier, or a polymerization method using an aqueous resin solution as an emulsifier. Can be obtained by emulsion polymerization in the presence of a radical polymerization initiator.

  Specific examples of the monomer constituting the emulsion resin capable of forming a film include, for example, acrylic and methacrylic monomers such as methyl (meth) acrylate, ethyl (meth) acrylate, and propyl (meth) acrylate. , Butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, benzyl (meth) acrylate, hexyl (meth) acrylate, octyl (meth) acrylate, 2 ethylhexyl (meth) acrylate, lauryl (meth) Acrylate, stearyl (meth) acrylate, 2hydroxyethyl (meth) acrylate, methoxy (meth) acrylate, ethoxy (meth) acrylate, butoxy (meth) acrylate, (meth) acrylic acid, acrylic (meth) amides, styrene Or α-methylstyrene, vinyl styrene sulfonate, vinyl ethers, maleic anhydride, crotonic acid, itaconic acid, cinnamic acid, polydimethylsiloxane methacrylate, polydimethylsiloxane acrylate, fluoroalkyl (meth) acrylates, Alkoxysilane unsaturated monomers can be used.

  As examples of radical polymerization initiators, aqueous types include persulfates such as potassium persulfate and ammonium persulfate, hydrogen peroxide, t-butyl hydroperoxide, azobisamidinopropane hydrochloride, and oily types. Benzoyl peroxide, cumene hydroperoxide, dibutyl peroxide, diisopropyl peroxydicarbonate, cumylperoxyneodecanoate, azobisisobutyronitrile and the like. Moreover, you may use reducing agents, such as L-ascorbic acid, acidic potassium sulfite, Rongalite, saccharides, an amine, as needed.

  In the water-in-oil type and oil-in-water type eyelash cosmetics according to the present invention, one or more of the emulsion resins capable of forming a film may be selected and blended. The amount of the emulsion resin capable of forming a film is preferably 1.0 to 30.0% by mass, more preferably 5.0 to 20.0% by mass, based on the total amount of the eyelash cosmetic. . If the blending amount of the emulsion resin capable of forming a film is too small, the makeup may be deteriorated, and if it is too much, the finish may be stiff.

  Moreover, the oily eyelash cosmetic according to the present invention contains the copolymer and a wax. The wax in the present invention means a solid oil component at room temperature, specifically, for example, beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nukarou, lanolin, kapok wax, Molasses, lanolin acetate, liquid lanolin, sugar cane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, bees wax, microcrislin wax, paraffin wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, fatty acid glyceride, hydrogenated castor oil, petrolatum, POE hydrogenated lanolin alcohol ether and the like.

  In the oily eyelash cosmetic according to the present invention, one or more of the above waxes may be selected and blended. The blending amount of the wax is preferably 0.1 to 25.0% by mass, more preferably 1.0 to 20.0% by mass, based on the total amount of the eyelash cosmetic. If the amount of the wax is too small, the volume effect may be impaired, and if it is too large, the finish may be deteriorated.

Moreover, it is suitable to mix | blend volatile silicone oil or hydrocarbon oil with the cosmetics for oily eyelashes concerning this invention. In addition, specific examples of the volatile silicone oil and hydrocarbon oil used in the present invention, or suitable blending amounts are as described above.
Moreover, it is suitable to mix | blend a thickener with the cosmetics for oil-based eyelashes concerning this invention. Examples of the thickener used in the present invention include gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (malmello), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, carboxymethylcellulose, Hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarint gum, dialkyldimethylammonium sulfate cellulose, xanthan gum, aluminum magnesium silicate, bentonite, hectonic Light etc. are mentioned.

  In the oily eyelash cosmetic according to the present invention, one or more of the thickeners may be selected and blended. The blending amount of the thickening agent is preferably 0.1 to 20.0% by mass, more preferably 1.0 to 18.0% by mass, based on the total amount of the eyelash cosmetic. If the blending amount of the thickener is too small, it may be difficult to apply or the volume effect may be impaired. If it is too much, it may be difficult to apply or the finish may be poor.

Moreover, it is suitable to mix | blend a hollow powder with the cosmetics for oil-based eyelashes concerning this invention. The hollow powder used in the present invention mainly includes a hollow resin powder and a hollow inorganic powder.
The hollow resin powder is obtained by heating, expanding or foaming a thermoplastic resin powder containing a volatile foaming agent that is mainly vaporized by heating. Examples of the resin that forms the outer shell of the hollow foamed resin powder include vinyl monomers such as vinyl chloride, vinyl acetate, and methyl vinyl ether, acrylic acid, acrylic ester, methacrylic acid, methacrylic ester, acrylonitrile, and methacrylonitrile. And homopolymers or copolymers composed of one or more monomers selected from acrylic monomers such as styrene, vinylidene chloride, divinylbenzene, ethylene glycol dimethacrylate and the like. Preferred is a copolymer comprising two or more monomers selected from acrylic acid, methacrylic acid or esters thereof, vinylidene chloride, acrylonitrile, methacrylonitrile and the like. These polymers may be crosslinked with a crosslinking agent such as divinylbenzene, ethylene glycol dimethacrylate, or triacryl formal.

  Although it does not specifically limit as a volatile foaming agent, For example, hydrocarbons, such as methane, ethane, propane, butane, isobutane, isobutene, pentane, isopentane, neopentane, hexane, neohexane, heptane, acetylene, trichlorofluoromethane, dichloromethane A halogenated hydrocarbon such as difluoromethane or a low boiling point compound such as tetraalkylsilane is used.

This hollow resin powder is produced, for example, by a method of heating and foaming a thermoplastic resin powder containing a volatile foaming agent as disclosed in JP-B-59-53290. The hollow resin powder is generally commercially available. For example, Matsumoto Microsphere MFL series [MFL-50STI (particle size: 10-30 μm, true specific gravity: 0.20), MFL-50SCA (particle size: 10-30 μm) manufactured by Matsumoto Yushi Seiyaku Co., Ltd. , True specific gravity 0.29), MFL-80GCA (particle size 10-30μm, true specific gravity 0.20), MFL-80CA (particle size 90-110μm, true specific gravity 0.13), MFL-100SCA (particle size 20-40μm, true specific gravity 0.20) , MFL-100CA (particle size 90-110 μm, true specific gravity 0.13), MFL-30STI (particle size 10-30 μm, true specific gravity 0.20)] and Matsumoto Microsphere F-80ED (particle size 90-110 μm, true specific gravity 0.020- 0.030), EXPANCEL microsphere made by EXPANCEL 551 DE 40 d42 (particle size 30-50 μm, true density 42 kg / m ³ ), 551 DE 40 d60 (particle size 15-25 μm, true density 60 kg / m ³ ), 551 DE 80 d42 (particle size 50-80 μm, true density 42 kg / m ³ ), 461 DE 40 d60 (particle size 20-40 μm, true density 60 kg / m ³ ), 461 DE 20 d70 (particle size 15 ~ 25μm, true density 70kg / m ³ ), 051 DE 40 d60 (particle size 20-40μm, true density 60kg / m ³ ), 091 DE 40 d30 (particle size 35-55μm, true density 30kg / m ³ ), 091 DE 80 d30 (particle size 60-90μm, true density) 30kg / m ³ ), 092 DE 40 d30 (particle size 35 to 55 μm, true density 30 kg / m ³ ), 092 DE 80 d30 (particle size 60 to 90 μm, true density 32 kg / m ³ ), GANTZ manufactured by GANTZ Kasei Co., Ltd. Pearl GMH-0850 (particle size 8μm, true specific gravity 0.65) etc.

The hollow inorganic powder is mainly produced by heating, expanding or foaming an inorganic substance such as glass containing a volatile foaming agent that is vaporized by heating, or fly ash generated in the process of burning coal (pulverized coal). . The hollow inorganic powder is generally commercially available, for example, Sumitomo 3M Limited Scotchlite Glass Bubbles K-series [K1 (true density 0.125g / cm ^3), K15 (true density 0.150 g / cm ^3), K20 (true density 0.200 g / cm ³ ), K25 (true density 0.250 g / cm ³ ), K37 (true density 0.370 g / cm ³ ), K46 (true density 0.460 g / cm ³ )] and S series [S22 ( True density 0.220g / cm ³ ), S38 (true density 0.380g / cm ³ ), S60 (true density 0.600g / cm ³ )], Float series [A16 (true density 0.16g / cm ³ ), A20 (true Density 0.20 g / cm ³ ), D32 (true density 0.2 g / cm ³ )], CEL-STAR (cell star) Z-20 (average particle size 67 μm, true density 0.17 to 0.23), Z -25 (average particle size 65μm, true density 0.22 to 0.28), Z-27 (average particle size 63μm, true density 0.24 to 0.30), Z-31T (average particle size 60μm, true density 0.28 to 0.34), Z-36 (Average particle size 56 μm, true density 0.33 to 0.39), SX-39 (average particle size 40 μm, true density 0.36 to 0.42), Z-45 (average particle size 52 μm, true density 0.42 to 0.4) 8), PZ-6000 (average particle size 40 μm, true density 0.70 to 0.80) and fly ash balloon Metasphere # 50 (average particle size 128 μm, true density 0.6 to 0.8), # 100 (average particle size 72 μm, true Density 0.6-0.8).

  Further, the surface of the hollow powder may be coated with an inorganic substance. For example, as disclosed in JP-A-4-9319, the inorganic powder is coated with a volatile foaming agent-containing thermoplastic resin before foaming or in the middle of foaming and heated. Can be obtained. As other methods, coating is carried out by mixing a water dispersion of an inorganic powder or an organic solvent with a hollow resin powder and drying, or by spraying the inorganic dispersion liquid onto the hollow resin powder and drying it. Examples thereof include a wet processing method and a method of compounding by physical force such as high impact force.

  The inorganic powder to be coated on the surface of the hollow resin powder is not particularly limited, but is selected depending on the intended effect. For example, talc, sericite, mica, calcium carbonate, magnesium carbonate, kaolin, boron nitride, titanium oxide, oxidation Examples include zinc, iron oxide, cerium oxide, zirconium oxide, silica, and the like. The particle shape of these inorganic powders is not particularly limited, and may be any of granular, spherical, plate-like, needle-like, and the like, and the average particle diameter is not particularly limited, but is preferably 0.001 to 20 μm. The mass ratio of the hollow resin powder and the inorganic powder is preferably 5:95 to 50:50.

  The hollow powder used in the present invention is particularly preferably a hollow resin powder, the resin forming the outer shell is preferably vinyl chloride, vinylidene chloride, methyl methacrylate or the like, and the volatile liquid blowing agent is a hydrocarbon gas or the like. Preferably used. As a commercially available product, MFL-50SCA (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), GMH-0850 (manufactured by Gantz Kasei Co., Ltd.) and the like can be used, but not limited thereto.

  In the oily eyelash cosmetic according to the present invention, one or more of the hollow powders may be selected and blended. The amount of the hollow powder blended is preferably 0.001 to 10.0 mass%, more preferably 0.1 to 8.0 mass%, based on the total amount of the eyelash cosmetic. If the amount of the hollow powder is too small, the curl effect and the volume effect may be lowered, and if too much, the finish may be deteriorated.

  In the present invention, the eyelash cosmetic is not particularly limited as long as it is a cosmetic intended to be applied on eyelashes, such as mascara, and may be used regardless of its specific form. it can. Moreover, the cosmetics for eyelashes of the present invention can be applied to a mascara that is a makeup cosmetic, a transparent mascara coat that does not contain a colorant, and the like.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.
First, the structure of each monomer used in the production of the copolymer of the present invention is shown below.

Monomer A1:

Monomer A2:

Monomer B1:

Monomer C1:

Monomer C2:

Next, a method for synthesizing the copolymer used in the present invention will be described.
Copolymer 1-1
In a glass flask equipped with a stirrer, a thermometer and a reflux condenser, 35 parts by mass of methyl methacrylate (monomer A1) represented by the above general formula (5) and polyoxymethacrylate represented by the above general formula (7) 5 parts by mass of ethylene ether (monomer B1), 60 parts by mass of methacryloxypropyl polydimethylsiloxane (monomer C1) represented by the above general formula (8), 120 parts by mass of isopropanol, and dimethyl-2,2′-azobis (2- 4 parts by mass of methyl propionate) was added, heated under a nitrogen stream, and polymerized at 80 ° C. for 10 hours. Subsequently, the volatile component was distilled off under reduced pressure to obtain a copolymer 1-1.

The present inventors prepared various copolymers according to the synthesis method shown above, and performed the following evaluations.
Blending of copolymer The inventors first prepared various copolymers according to the above production examples, W / O type mascara blended with the copolymer as a film-forming component, and a conventional coating film. Comparison was made with a W / O type mascara containing a forming component. The monomer composition of the copolymer used in each test example and the blend composition of the W / O type mascara and the evaluation results are also shown in Table 1 below. The evaluation criteria are as follows.

(1) Curl effect An actual use test was conducted by 10 professional panelists on the presence or absence of makeup on the mascara in each test example. The evaluation criteria are as follows: A: Eight or more panelists recognized that the curl effect was good.
○: 6 or more panelists and less than 8 panelists recognized that the curl effect was good.
Δ: 3 or more panelists and less than 6 panelists recognized that the curl effect was good.
X: Less than 3 panelists recognized that the curl effect was good.

(2) Makeup The actual use test was conducted by 10 expert panelists on the presence or absence of makeup on the mascara in each test example. Evaluation criteria are as follows: A: Eight or more panelists recognized that makeup was good.
○: 6 or more panelists and less than 8 panelists admitted that they had good makeup.
Δ: 3 or more panelists and less than 6 panelists recognized that makeup was good.
X: Less than 3 panelists recognized that makeup was good.

(3) Coating feeling An actual use test was conducted by 10 expert panelists on the presence or absence of the coating feeling of the mascara in each test example. Evaluation criteria are as follows: A: Eight or more panelists recognized that there was no film feeling.
○: 6 or more panelists and less than 8 panelists recognized that there was no film feeling.
Δ: 3 or more and less than 6 panelists recognized that there was no film feeling.
X: Less than 3 panelists recognized that there was no film feeling.

(4) Stability over time (after one month)
After holding the mascara of each test example at room temperature for 1 month, the appearance and properties were visually observed.
A: There was no change in appearance and properties.
○: There were slight changes in appearance and properties such as separation or precipitation.
Δ: Appearance and properties such as considerable separation or precipitation were changed.
X: Appearance and properties such as clear separation or precipitation were changed.

(Table 1)
W / O type mascara

From Table 1 above, the water-in-oil mascara of Test Example 1-1 in which the copolymer 1-1 was blended as a film-forming component showed an extremely excellent curling effect and a long-lasting effect, and the film feeling was excellent. It became clear that it was remarkably improved.
On the other hand, in the case of Test Example 1-2 in which the copolymer 1-2 consisting only of the monomer A was blended, it was inferior in terms of film feeling and stability over time, and the copolymer consisting of the monomers A and B In Test Example 1-3 in which 1-3 was blended, the curl effect, makeup, and stability over time were poor. Further, in Test Example 1-4 in which a copolymer 1-4 composed of monomers A and C was blended, the curl effect could not be sufficiently obtained. Further, Test Example 1-5 containing hydroxyethyl cellulose, which is known as a general film-forming component, is inferior in terms of makeup, curling effect and film feeling, and Test Example 1-6 containing trimethylsiloxysilicic acid. However, it was difficult to say that the coating film was satisfactory.

  Subsequently, using the copolymer 1-1, the O / W type mascara and the base of the oily mascara were compared with those in which a conventional film forming component was blended in the same manner as in the above test. . The composition of mascara used in each test example and the evaluation results are shown in Tables 2 and 3 below. The evaluation criteria are the same as in the above test.

(Table 2)
O / W type mascara

(Table 3)
Oily mascara

  From Tables 2 and 3, the oil-in-water mascara of Test Example 1-7 and the oily mascara of Test Example 1-10, in which the copolymer 1-1 was blended as a film-forming component, Compared with the case where a film-forming component is blended, the curl effect and the long-lasting effect are shown, and the film feeling is remarkably improved.

Following the monomer composition of the copolymer, the present inventors found that a copolymer To investigate the preferred monomer composition of the various copolymers obtained by changing the content of the monomer (A) according to the above Production Example The lipsticks prepared and blended with the respective copolymers were evaluated. Table 4 below shows the composition and evaluation results of the mascara of each test example. The evaluation criteria are the same as in the above test.

From Table 4 above, Test Example 1-13 using Copolymer 1-5 containing no monomer (A) is significantly inferior in curling effect and longevity. On the other hand, it can be seen that as the proportion of the monomer (A) in the copolymer increases, the curl effect and the cosmetic durability tend to be improved, but the proportion of the monomer (A) is 20% by mass. In Test Examples 1-14 and 15 using the copolymers 1-6 and 7 which are less than 1, it cannot be said that they are sufficient. On the other hand, in Test Examples 1-16 to 19 using the copolymers 1-8 to 11 in which the proportion of the monomer (A) in the copolymer is 20% by mass or more, the curl effect, the makeup retention, and the coating It was found that the feeling was extremely excellent.
From this, in the cosmetics for eyelashes concerning this invention, it is thought that the ratio of the monomer (A) in a copolymer needs to be 20 mass% or more.

Following copolymer concentration in the eyelash cosmetic, the present inventors have found that in order to examine the preferred formulation concentration of the copolymer to be blended into the eyelash cosmetic of the amount of the copolymer is varied is Mascara was prepared and evaluated. Table 5 below shows the composition and evaluation results of the mascara of each test example. The evaluation criteria are the same as in the above test.

  From Table 5 above, in Test Example 1-21 in which about 1-1% by mass of copolymer 1-1 is blended, the curling effect and the longevity of the makeup are excellent, and the effect of improving the coating feeling is seen. Further, in the case of Test Example 1-25 in which about 30.0% by mass of the copolymer 1-1 was blended, the curl effect, the cosmetic durability, and the coating feeling were all excellent. On the other hand, Test Example 1-20 containing about 0.1% by mass of copolymer 1-1 tends to be inferior in terms of makeup retention and curling effect. Further, in Test Example 1-26 in which about 40.0% by mass of copolymer 1-1 is blended, the film feeling tends to be inferior. From this, in the cosmetics for eyelashes concerning this invention, it is thought that it is suitable to mix | blend a copolymer with 1.0-30.0 mass%.

Other examples of the present invention will be given below, but the present invention is not limited thereto.
Copolymer 2-1
In a glass flask equipped with a stirrer, a thermometer and a reflux condenser, 35 parts by mass of methyl methacrylate (monomer A1) represented by the above general formula (5) and polyoxymethacrylate represented by the above general formula (7) 15 parts by mass of ethylene ether (monomer B1), 50 parts by mass of methacryloxypropyl polydimethylsiloxane (monomer C1) represented by the general formula (8), 120 parts by mass of isopropanol, and dimethyl-2,2′-azobis (2- 4 parts by mass of methyl propionate) was added, heated under a nitrogen stream, and polymerized at 80 ° C. for 10 hours. Subsequently, the volatile component was distilled off under reduced pressure to obtain a copolymer 2-1.

Copolymer 2-2
In a glass flask equipped with a stirrer, a thermometer and a reflux condenser, 35 parts by mass of methyl methacrylate (monomer A1) represented by the above general formula (5) and 2-acrylic acid represented by the above general formula (6) 15 parts by mass of ethylhexyl (monomer A2), 5 parts by mass of polyoxyethylene ether of methacrylic acid (monomer B1) represented by the above general formula (7), methacryloxypropyl polydimethylsiloxane represented by the above general formula (9) (monomer C2) ) 45 parts by mass, 120 parts by mass of isopropanol, and 4 parts by mass of dimethyl-2,2′-azobis (2-methylpropionate) were heated under a nitrogen stream, and a polymerization reaction was carried out at 80 ° C. for 10 hours. . Subsequently, the volatile component was distilled off under reduced pressure to obtain a copolymer 2-2.

Example 2-1
W / O type mascara mass%
Light isoparaffin 8.0
Dimethylpolysiloxane 3.0
Decamethylcyclopentasiloxane 10.0
Copolymer 2-1 10.0
Methyl polysiloxane emulsion Appropriate amount 1,3-butylene glycol 4.0
Dioleic acid polyethylene glycol 2.0
Diglyceryl diisostearate 2.0
Sodium bicarbonate 0.1
Sodium metaphosphate appropriate amount DL-α-tocopherol acetate 0.1
P-hydroxybenzoate appropriate amount sodium dehydroacetate appropriate amount black iron oxide 7.0
Seaweed extract 0.1
Bentonite 1.0
Dimethylstearyl ammonium hectorite 5.0
Polyvinyl acetate emulsion 20.0
Heavy liquid isoparaffin 4.0
Nylon fiber (1-2mm) 3.0
Purified water balance
(Manufacturing method)
The W / O type mascara of Example 2-1 was excellent in the makeup-moistening effect, and the film feeling was remarkably improved.

Example 2-2
Oily mascara mass%
Light isoparaffin residue Decamethylcyclopentasiloxane 20.0
Microcrystalline wax 17.0
Copolymer 2-2 15.0
Black iron oxide 2.0
Hollow resin powder 5.0
Dextrin fatty acid ester 11.0
(Manufacturing method)
The oily mascara of the above Example 2-2 was excellent in the makeup and moisturizing effect, and the film feeling was remarkably improved.

Claims (8)

Containing monomer (A) represented by the following general formula (1), monomer (B) represented by the following general formula (2), and monomer (C) represented by the following general formula (3) as constituent monomers A copolymer polymer in which the content of the monomer (A) is 20% by mass or more with respect to the total amount of the constituent monomers and the content of the monomer (C) is 30 to 80% by mass with respect to the total amount of the constituent monomers. A cosmetic for eyelashes, characterized by comprising:

(In the above formula, R ¹ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, and R ² represents hydrogen or a hydrocarbon group having 1 to 24 carbon atoms.)

(In the above formula, R ³ is hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁴ is a divalent hydrocarbon group having 1 to ⁴ carbon atoms, R ⁵ is hydrogen or a hydrocarbon having 1 to 24 carbon atoms. Represents a group, and l represents an integer of 1 to 50.)

(In the above formula, R ⁶ represents hydrogen or a hydrocarbon group having 1 to 3 carbon atoms, R ⁷ represents a divalent hydrocarbon group having 1 to 4 carbon atoms, and R ⁸ represents a hydrocarbon group having 1 to 6 carbon atoms. M represents 0 to 500, and n represents an integer of 1 to 3.) In eyelash cosmetic of claim 1, wherein the copolymer and the body contains a oil component, an oil, characterized by containing water in the internal phase water-eyelash cosmetic in the external phase. The cosmetic for water-in-oil eyelashes according to claim 2, wherein the outer phase contains 1-30% of the copolymer, volatile silicone oil and / or hydrocarbon oil, water in the inner phase, water-in-oil eyelashes cosmetic, characterized in that it contains a emulsion resin with a film-forming ability.   The cosmetic for eyelashes according to claim 1, wherein the inner phase contains the copolymer and an oil, and the outer phase contains water. Oil-in-water eyelashes cosmetic composition according to claim 4, said copolymer 1% to 30% in the internal phase contains a volatile silicone oil and / or hydrocarbon oil, and water external phase, the film An oil-in-water type eyelash cosmetic comprising an emulsion resin having a forming ability.   The cosmetic for eyelashes according to claim 1, comprising the copolymer and a wax.   The cosmetic for oily eyelashes according to claim 6, wherein the copolymer contains 1 to 30%, a wax, volatile silicone oil and / or hydrocarbon oil, and a thickener. Oily eyelash cosmetic.   The cosmetic for oily eyelashes according to claim 7, further comprising a hollow powder.