TW202203885A - Cosmetic for keratin fibers - Google Patents

Abstract

The present invention addresses the problem of providing a cosmetic for keratin fibers that excels in separation effect, persistence of cosmetic effect, and curl maintenance effect, and achieves light lengthening without stickiness, which is a level of quality that is desired from cosmetics for keratin fibers, while also being easily removed with hot water. A cosmetic for keratin fibers according to the present invention, which has solved this problem, is characterized by including: (A) a dispersion of (A2) an alkyl acrylate/vinyl acetate copolymer, with (A1) a nonaqueous solvent serving as the dispersion medium; (B) a wax ester; (C) an organic modified clay mineral; and (D) a volatile oil.

Description

Cosmetics for keratin fibers

The present invention relates to a cosmetic for keratin fibers.

The main effect required for the cosmetic for keratin fibers is to make the eyelashes look thick and thick, and to beautify and three-dimensionally give the impression of the eyes. In particular, it has the effect of beautifully processing and separating eyelashes one by one, or the continuous curling effect that maintains the curling state of the eyelashes, and has the property of being non-sticky and easy to unfold, so it can be processed beautifully. important. In recent years, it is required that the cosmetic material does not fall off in the event of perspiration or bad weather, such as rain, and that it is required to maintain the continuity of the cosmetic effect of the cosmetic film. On the other hand, when such long-lasting cosmetic materials with high cosmetic effect are peeled off, a cleaning agent is generally used to remove them. However, since the cleansing agent is highly irritating to the skin, the cosmetic material must be removed by rubbing with the hand, so it may cause a burden on the eyelashes and the surrounding skin. Therefore, a cosmetic for keratin fibers that can be easily exfoliated by hot water during bathing without using a detergent is expected, although the durability of cosmetic effects against sweat, rain, and the like is high. For example, as described in Patent Document 1, there is a technique concerning a cosmetic for eyelashes, which contains an alkyl acrylate/vinyl acetate copolymer and a phosphoric acid triester, and has excellent durability of the cosmetic effect, water resistance, and hot water cleanability. In addition, as described in Patent Document 2, it contains alkyl acrylate/vinyl acetate copolymer latex, acrylic acid alkyl copolymer latex, carbon black, polyol, and polyvinylpyrrolidone, which has cleansing properties for warm water and is good for eyes. Technology for keratin eyelashes cosmetic with excellent gloss and blackness that imparts an impression. In addition, as described in Patent Document 3, the combination of an oil-soluble film-forming agent and a nonionic surfactant with an HLB value of 7 to 10, a volatile oil agent and a non-volatile oil agent, has the effect of increasing the volume, the curling effect, and the curling effect. The technology of eyelashes cosmetic with excellent durability, durability of makeup effect (normal temperature), and removability with warm water (40°C). [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2013-139397 [Patent Document 2] Japanese Patent Laid-Open No. 2010-77042 [Patent Document 3] Japanese Patent Laid-Open No. 2017-125000

[Problems solved by the invention]

However, among the cosmetic materials for eyelashes containing an alkyl acrylate/vinyl acetate copolymer obtained in Patent Document 1 or 2, although they are excellent in water resistance, cleanability (water at 40° C.), and durability of cosmetic effects, use In the case of the exemplified alkyl acrylate/vinyl acetate copolymer in the form of a water-containing latex, sticking is likely to occur, and it is non-sticky and easy to spread, which is considered important for the processing quality of eyelash cosmetic materials. Or the points of the curl maintenance effect and the separation effect have not been paid attention to. In addition, in the cosmetic for eyelashes of Patent Document 3, attention is not paid to the separation effect or the ease of spreading without stickiness.

The present invention aims to provide a cosmetic material for keratin fibers which is excellent in separation effect, durability of cosmetic effect, and curl maintenance effect, can be easily unfolded without sticking, and can be easily peeled off by hot water. [Means to solve the problem]

Regarding this fact, the present inventors have repeated the results of detailed investigations and found that when a combination of alkyl acrylate/vinyl acetate copolymer, wax ester, organic modified clay mineral and volatile oil is dispersed using a non-aqueous solvent as a dispersing medium, it is possible to form an easily adhered For eyelashes and soft cosmetic film, the cosmetic film not only has excellent separation effect, but also can provide long-term curl maintenance effect, further non-sticky feeling, can be stretched with only a small shear stress, and can be extended by hot water. It is easy to fall off, and the durability of the cosmetic effect is excellent, so the present invention has been completed.

That is, the present invention includes the following. [1] Cosmetics for keratin fibers containing the following components (A) to (D); (A) Dispersion of (A2) alkyl acrylate/vinyl acetate copolymer using (A1) non-aqueous solvent as dispersing medium (B) wax ester (C) Organo-modified clay minerals (D) Volatile oil. [2] Component (A2) Alkyl acrylate/vinyl acetate copolymer is as described above [1] The alkyl (meth)acrylate and vinyl acetate are copolymerized in a mass ratio of 30:70 to 95:5. ] Cosmetics for keratin fibers described. [3] The cosmetic material for keratin fibers according to the above [1] or [2], wherein the content of the component (A) is 0.4 to 15% by mass in terms of solid content. [4] The cosmetic material for keratin fibers according to any one of the above [1] to [3], wherein the content mass ratio of the components (A2) and (B) is (A2)/(B)=0.02 to 1.5 . [5] The polymer of the alkyl (meth)acrylate constituting the component (A2) alkyl acrylate/vinyl acetate copolymer as described in any one of the above [1] to [4] with a Tg of 20 to 50°C of keratin fibers for cosmetics. [6] The cosmetic material for keratin fibers according to any one of the above [1] to [5], wherein the number average molecular weight of the component (A2) an alkyl acrylate/vinyl acetate copolymer is 50,000 to 500,000. [7] The aforementioned component (B) contains wax ester (B1) with a melting point of 40°C or higher and less than 70°C and wax ester (B2) with a melting point of 70 to 90°C as described in any one of the aforementioned [1] to [6] The described cosmetic for keratin fibers. [8] The cosmetic for keratin fibers according to any one of the above [1] to [7], wherein the non-aqueous solvent of the component (A1) is a volatile hydrocarbon oil. [Effect of invention]

The cosmetic material for keratin fibers of the present invention is excellent in the separation effect, the continuation of the cosmetic effect, and the curl maintenance effect, has no stickiness and can be easily unfolded, and has the property of being easily unfolded, and can be Excellent for easily falling off from hot water.

[Type of carrying out the invention]

The present invention will be described in detail below. In addition, in this specification, "-" shows the meaning of the range including the numerical value before and after this, and "%" shows mass % unless there is a special description.

The component (A) of the present invention is used as a dispersion obtained by dispersing the alkyl acrylate/vinyl acetate copolymer (A2) in the non-aqueous solvent (A1).

Alkyl Acrylate-Vinyl Acetate Copolymer (A2) corresponds to the component described under the name of ACRYLATES/VA COPOLYMER in the INCI name (International Nomenclature Cosmetic Ingredient labeling names). Component (A) is obtained by copolymerizing an alkyl (meth)acrylate and vinyl acetate, and as the alkyl (meth)acrylate, (methyl) having an alkyl group having 1 to 4, 8 or 12 carbon atoms is used. group) one or two or more of alkyl acrylates. The present invention is not particularly limited, but from the viewpoint of easy detachment by hot water and the continuation of the cosmetic effect, the mass ratio of the alkyl (meth)acrylate to vinyl acetate of the constituent (A2) In the alkyl (meth)acrylate/vinyl acetate, the lower limit is preferably 0.4 or more, preferably 0.6 or more, more preferably 0.8, and the upper limit is preferably 20 or less, more preferably 2.5 or less, more preferably 1.5 or less. Or the mass ratio of alkyl (meth)acrylate and vinyl acetate is preferably 30:70 to 95:5 (alkyl (meth)acrylate: vinyl acetate), and the range of 40:60 to 70:30 is better. When the ratio of the alkyl (meth)acrylate is in the above range, it is easy to disperse in the non-aqueous solvent (A1), the durability of the cosmetic film and the like are high, and the ease of detachment by hot water is excellent.

The number average molecular weight of the component (A2) is not particularly limited, but is preferably 50,000 to 500,000, more preferably 50,000 to 300,000 from the viewpoint of the separation effect and the curl maintenance effect. The number average molecular weight is a polystyrene conversion value by gel permeation chromatography. In addition, among the monomers constituting the component (A2), the Tg of the polymer in which only alkyl (meth)acrylate is polymerized is not particularly limited, but from the viewpoints of the ease of detachment by hot water and the effect of maintaining the curl, The lower limit is preferably 10°C or higher, more preferably 15°C or higher, more preferably 20°C or higher, and the upper limit is preferably 50°C or lower, more preferably 40°C or lower. In this range, in addition to the ease of falling off by hot water and the lasting effect of curling, the separation effect and the lasting effect of the makeup effect are excellent, and the effect of being free from sticking and easy to unfold can be improved.

The non-aqueous solvent (A1) as the dispersing medium of the component (A) contains organic solvents that can be contained in cosmetics, silicone-based solvents, etc., among these, also from the viewpoint of separation effect, non-sticking and easy spreading From the point of view, volatile hydrocarbon oil, fatty acid ester, fatty acid, silicone oil, etc. are preferred, and volatile hydrocarbon oil is preferred. The term "volatile hydrocarbon oil" refers to hydrocarbons whose boiling point is 260°C or lower in normal pressure, for example, isooctane (2,2,4-trimethylpentane, 2,3-dimethylhexane, etc.) etc.), isododecane (2,2,4,6,6-pentamethylheptane, etc.), isohexadecane, isoeicosene and other hydrocarbons with side chains, isoparaffins or mixtures thereof, Isobutylene, n-butene, etc. are polymerized or copolymerized (preferably, the degree of polymerization is 4 to 6), and then hydrogenated, etc., one or two or more of them can be used in combination as necessary. Among these, isododecane is preferred from the standpoint of separation effect and non-sticking and easy extensibility.

Although the fatty acid ester of the component (A1) is not particularly limited, from the viewpoints of separation effect, non-stickiness and easy extension, it is preferable that the alkyl group of the fatty acid constituting the fatty acid has 4 to 24 carbon atoms. 6 to 20 are better. Preferable fatty acid esters include, for example, neopentyl glycol bis-2-ethylhexanoate, diethylhexyl succinate, ethylhexyl palmitate, isopropyl myristate, and dimerdiethylene glycol. Oil-based hydrogenated rosin condensate, tri(caprylic/capric) glyceride, 2-ethylhexane cetate, didecanoate neopentyl glycol, didecanoate propylene glycol, isononanoate isotridecyl, Glyceryl tri-2-ethylhexanoate, diisostearyl malate, tetraethylhexanoate tetra-2-pentaloate, polyglyceryl-10 decaethylhexanoate, ethyl hydroxystearate Hexyl ester, trimellitic acid tridecyl ester, dipentaerythritol hexaisononanoate, diglyceryl triisostearate, etc. can be illustrated, and these 1 type or 2 or more types can be used. Among these, neopentyl glycol bis-2-ethylhexanoate, diethylhexyl succinate, ethylhexyl palmitate, isopropyl myristate, dimerized dilinoleyl hydrogenated rosin are also condensed tris(caprylic/capric) glycerides, 2-ethylhexane cetate, didecanoate neopentyl glycol, didecanoate propylene glycol, isononanoate isotridecyl, tris-2-ethyl Glyceryl hexanoate and diisostearyl malate are preferred.

The fatty acid of the component (A1) is preferably a low-crystalline fatty acid such as a branched fatty acid or an unsaturated fatty acid, and is exemplified by isostearic acid, isopalmitic acid, and oleic acid.

As the silicone oil of the component (A1), phenyl modified silicones such as diphenylsiloxy phenyl trimethicone, diphenyl dimethyl siloxane, etc., can be exemplified. Non-volatile oils such as dimethylpolysiloxane. Moreover, as a volatile silicone oil, dimethyl polysiloxane, methyl trimethyl siloxane (methyl Trimethicone), octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane are mentioned. alkane, dodecamethylcyclohexasiloxane, etc. Examples of commercial products include DC345 FLUID, SH245 FLUID (manufactured by Toray Dow Corning), KF-995, TMF1.5, silicon KF-96L-1.5CS, KF-96L-2CS (manufactured by Shin-Etsu Chemical Co., Ltd. above), BELSIL DM 1 PLUS (manufactured by Wacker Chemical Corporation), and the like. As the volatile silicone oil, since the boiling point is less than 250° C., it is preferable from the viewpoint of drying rate, and for example, methyltrimethylsiloxane and dimethylsiloxane (Dimethicone) can be used.

Component (A) and (A2) are in a dispersed state in (A1), so it is preferable to use (A2) in a particle state. In this state, (A2) does not stick to the surface but is easily spotted in the cosmetic film, and the separation effect, the durability of the makeup effect, and the curl maintenance effect are all excellent, the softness is improved, and the non-sticking can be provided. It is better to extend easily. Although the average particle diameter of the particles is not particularly limited, it is preferably 0.1 to 2 μm from the viewpoints of separation effect, non-sticking and easy spreading. The dispersed average particle diameter was obtained by the following method using a laser diffraction method. Component (A) was collected in a glass container of 5 mm in length, 65 mm in width, and 80 mm in height, using a Pasteur pipette to collect 5 mL, and set this in a laser diffraction/scattering particle size distribution analyzer [LA- by Horiba Manufacturing Co., Ltd. 910A]. In order to make the transmittance of the laser light (red) 80% to 90%, after adjusting the concentration of the component (A), the results of the measurement under the conditions of the measurement temperature of 25°C ± 1°C are processed by a computer to obtain the non-aqueous The average particle diameter of the particles of the resin in dispersion was defined as the value of the volume average (D50) as the average particle diameter.

Component (A) can be obtained by a known method, for example, in a non-aqueous solvent, in addition to a method of polymerizing an alkyl (meth)acrylate and vinyl acetate, or by mixing the prepared alkyl acrylate with acetic acid The vinyl ester copolymer is produced by dispersing it in a non-aqueous solvent. The content and mass ratio ((A2)/(A1)) of the non-aqueous solvent (A1) and the alkyl acrylate-vinyl acetate copolymer (A2) in the component (A) is due to the separation effect, non-stickiness and easy extension From the viewpoint of , it is preferably 1.5 or less, more preferably 1.0 or less. Examples of commercial products of the component (A) include Nissetsu U-3712A (manufactured by Nippon Carbide Industrial Co., Ltd.), etc., the number average molecular weight and average particle size of the alkyl acrylate-vinyl acetate copolymer (A2) contained therein. The diameter is included in the range of the above-mentioned number average molecular weight and average particle diameter.

Although the content of the component (A) in the cosmetic for keratin fibers of the present invention is not particularly limited, it has a separation effect, a curl maintenance effect, easy unfolding without sticking, the lasting cosmetic effect, and the use of hot water. From the viewpoint of being easy to fall off, in terms of solid content (content of (A2)) in cosmetics, the lower limit is preferably 0.4% or more, more preferably 1.5% or more, and more preferably 3% or more. good. The upper limit is preferably 15% or less, more preferably 9% or less, and more preferably 7% or less.

In the wax ester of the component (B) of the present invention, it has polarity as a solid component, and can appropriately impart adhesion to the eyelashes. Therefore, by combining the components (A), (C), and (E), the The ease of falling off with hot water can impart hardness and stickiness, and can impart a high separation effect and a continuous curling effect to the eyelashes.

The wax ester of the component (B) of the present invention is not particularly limited as long as it is derived from solid oils such as animal oils, vegetable oils, and synthetic oils that are usually contained in cosmetics. For example, hard lanolin, beeswax, stearic acid Base, montan wax, carnauba wax, hydrogenated jojoba oil, behenic acid behenyl, candelilla wax, sunflower seed wax, rice wax, etc. may be used alone or in combination as necessary.

The content of the component (B) in the present invention is not particularly limited, but is determined by the durability of the cosmetic effect, the separation effect, the continuous curling effect, the ease of falling off by hot water, the properties of non-sticking and easy spreading. From the viewpoint of excellence, the lower limit is preferably 4% or more, more preferably 6% or more, and more preferably 8% or more. The upper limit is preferably 25% or less, more preferably 20% or less, and more preferably 15% or less.

Among these, the wax ester of the component (B) can be used in combination with a melting point of 40°C or higher and less than 70°C from the viewpoint that the effect of easy detachment and separation by hot water can be obtained, and the curling effect can be further improved. The wax ester (B1) and the wax ester (B2) having a melting point of 70 to 90°C are preferable. Examples of (B1) include hard lanolin, beeswax, stearyl stearate, and the like, and examples of (B2) include montan wax, carnauba wax, hydrogenated jojoba oil, and behenate behenate. base, candelilla wax, sunflower seed wax, rice wax, etc. From the viewpoint of being able to obtain more excellent products that have both the curl lasting effect and the ease of falling off by hot water, it is preferable that (B1) and (B2) are waxes derived from animal oils or vegetable oils, wherein (B1) is Beeswax is preferred, (B2) carnauba wax is preferred.

In addition, from the viewpoint of the durability of the cosmetic effect, the separation effect, the curl lasting effect, the easy spreading without sticking, and the excellent ease of falling off by hot water, the component (B) contains a mass ratio of ( The lower limit value of B1)/(B2) is preferably 0.2 or more, more preferably 0.5 or more, and more preferably 0.75 or more. The upper limit is preferably 5 or less, more preferably 2 or less, and more preferably 1.25 or less.

In the present invention, the content mass ratio of the component (B) and the component (A2) is not particularly limited, but from the viewpoints of the curl continuation effect, the ease of falling off by hot water, and the ease of spreading without sticking, The lower limit of the content mass ratio (A2)/(B) in the cosmetic is preferably 0.02 or more, more preferably 0.1 or more, and more preferably 0.25 or more. The upper limit is preferably 1.5 or less, more preferably 1.2 or less, and more preferably 0.8 or less.

When the organic modified clay mineral used as the component (C) of the present invention is combined with the components (A), (B), and (D), the liquid component can be gelatinized, and separation or waste liquid generation can be suppressed, While making it uniform and stabilizing the usability, the effect of imparting moderate viscosity, separation effect, and easy extension without sticking can be obtained.

As the component (C), the organo-modified clay mineral is not particularly limited as long as it is generally used in cosmetics, and any of them can be used. Specifically, it is obtained by ion-exchanging water-swellable clay minerals with cationic surfactants such as alkyl quaternary ammonium salts. In the present invention, benzyl dimethyl stearyl ammonium The ion-exchanger, which is exchanged with dimethyldistearylammonium ion, can improve the stability over time, and is particularly preferred from the viewpoint of being free from sticking and being easily extensible. As a water-swellable clay mineral, it is a kind of colloidal hydrous aluminum silicate having a three-layer structure, and is generally represented by the following general formula (1). (X, Y) ₂₃ (Si, Al) ₄ O ₁₀ (OH) ₂ Z･nH ₂ O･･･(1) where X=Al, Fe, Mn, Cr Y=Mg, Fe, Ni, Zn, Represented by Li Z=K, Na, and Ca, specific examples include natural or synthetic montmorillonite, hectorite, and hectorite (in this case, (OH) in the above general formula is substituted by fluorine) The montmorillonite group and the synthetic mica known by the names of sodium silicate mica or sodium or lithium band mica, etc., are particularly preferred because montmorillonite and hectorite are easily ductile because they are not sticky. Examples of sales items related to organic modified clay minerals include BENTONE 27 BC, BENTONE 38 BC, BENTONE 27V BC, BENTONE 38V BC (the above are manufactured by Elementis Ltd.), Lucentite SAN, and Lucentite SAN-P (the above are Coop Chemical Company). Moreover, other water-swellable clay minerals, for example, after being treated with vermiculite and a cationic compound, can be applied to the present invention as an organic modified clay mineral with an arbitrary modification rate. Moreover, these water-swellable clay minerals and cationic compounds are respectively contained, and in the system of the water-in-oil emulsified cosmetic of the present invention, they can also become organic modified clay minerals. The organic modified clay minerals of these components (C) may be used alone or in combination of two or more.

The content of the organically modified clay mineral contained in the component (C) of the present invention is not particularly limited, but from the viewpoint of high thixotropy without stickiness, easy spreading and separation effects, and curl lasting effects , as the lower limit, preferably more than 1%, more preferably more than 3%, more preferably more than 4%. The upper limit is preferably 9% or less, more preferably 7% or less, and more preferably 6% or less. The content of the compounded component (A1) and the component (D) is preferably set to a content that does not easily become a waste liquid.

In the volatile oil used as the component (D) of the present invention, by combining with the components (A) to (C), it is possible to impart non-stickiness and easily spread, and to accelerate the volatilization after coating, the The makeup film is stronger, so it can improve the lasting effect of makeup effect or maintain the effect of curling, etc. The volatile oil of the component (D) is not particularly limited as long as it is generally used in cosmetics, and examples thereof include the volatile hydrocarbon oils and volatile silicone oils described for the component (A1). In particular, from the viewpoint of the dispersibility of the component (A) with respect to (A2), it is preferable to use a hydrocarbon-based volatile oil. As these commercial products, ISODODECANE (made by IMCD Corporation), IP solvent 1620MU, IP solvent 2028MU (all made by Idemitsu Kosan Co., Ltd.), etc. are mentioned, and these 1 type or 2 or more types can be used.

The total content of the volatile oil contained in the component (A1) of the present invention and the volatile oil of the component (D) (hereinafter referred to as [volatile oil in (A1) + (D)]) is not particularly limited. , but from the viewpoint of non-sticky and easy spreading and makeup effect, lasting effect, and curl maintenance effect, the lower limit is preferably 45% or more, more preferably 48% or more, and 50% or more. for better. The upper limit is preferably 66% or less, more preferably 64% or less, and more preferably 62% or less.

In the present invention, the content mass ratio of [volatile oil in (A1) + (D)] and the component (C) is not particularly limited, but from the viewpoint of the separation effect and non-stickiness, it can be easily stretched, and the curling effect can be sustained. From the point of view, the lower limit value of the content ratio [volatile oil in (A1) + (D)]/(C) in the cosmetic is preferably 5.8 or more, preferably 7.8 or more, and 9 or more. better. The upper limit is preferably 13.2 or less, more preferably 12.8 or less, more preferably 12.2 or less.

In the cosmetic material for keratin of the present invention, by further containing dextrin fatty acid ester as the component (E), it can be easily and uniformly mixed with the component (B), and the effect of controlling crystallization can also be achieved. The effect of A1) or component (D) is also excellent, and a high effect can be obtained regarding the ease of detachment by hot water, and the ease of spreading without sticking. Among the dextrin fatty acid esters used in the component (E) of the present invention, dextrin is preferably an ester with a higher fatty acid having 8 to 22 carbon atoms, and specific examples thereof include caprylic acid dextrin, lauric acid dextrin, and palmitic acid. Dextrin, myristic acid dextrin, stearic acid dextrin, behenic acid dextrin, coconut oil fatty acid dextrin, (palmitic acid/caprylic acid) dextrin, isostearic acid dextrin, etc. Among these, those containing a large amount of straight-chain saturated fatty acids in the acyl group are preferred, and palmitic acid dextrin is preferred in terms of shape stability and usability, and can be easily stretched without sticking, and the lasting cosmetic effect can be obtained. , curl maintenance effect, etc. are all excellent. As a sale item of these dextrin fatty acid ester, "LeopardKL2", "LeopardTT2", "LeopardTL2" (the above-mentioned Chiba Milling Co., Ltd. make) etc. are mentioned, for example.

The content of the dextrin fatty acid ester contained in the component (E) of the present invention is not particularly limited, but the lower limit is 2% or more from the viewpoints of separation effect, no stickiness, and easy spreading. More preferably, more than 3% is more preferred, more preferably more than 4%. The upper limit is preferably 10% or less, more preferably 8% or less, and more preferably 6% or less.

The cosmetic material for keratin fibers of the present invention may contain, in addition to the above-mentioned components (A) to (E), oily components, inorganic pigments, organic pigments, and pigments that are generally used in cosmetic preparations within the range that does not hinder the effects of the present invention. Powders, surfactants, fibers, polyols, water-soluble polymers, water-soluble film-forming resins, water-based ingredients such as humectants, sugars, ultraviolet absorbers, discoloration inhibitors, antioxidants, antifoaming agents, cosmetic ingredients, Preservatives, fragrances, etc.

As the oily component, other than the component (A), the component (B) and the component (D), any oil or fat generally used in cosmetics may be used without particular limitation, and those derived from animal oils, vegetable oils, and synthetic oils can be used. As solid oil or semi-solid oil, hydrocarbons, oils and fats, ester oils, fatty acids, higher alcohols, fluorine-based oils, etc. can be used regardless of the properties of the liquid oil. Among them, when a hydrocarbon-based wax is contained, the effect of the component (B) can be supplemented, and the curl lasting effect can be improved, and the effect of easy spreading without stickiness can be improved.

The powder component may be a powder that is generally used for cosmetic materials, and it does not vary from shapes such as spherical, tabular, needle-like, particle diameters such as fine particles, and pigment grades, and porous and non-porous materials. The particle structure and the like are particularly limited, and examples thereof include inorganic powders, bright powders, organic powders, pigment powders, metal powders, composite powders, and the like.

The surfactant may be any surfactant generally used in cosmetics, and examples thereof include nonionic surfactants, negative ionic surfactants, cationic surfactants, and amphoteric surfactants. Although not particularly limited, from the viewpoint that the effects of the present invention can be remarkably exhibited, it is preferable to use an amphoteric surfactant, and it is particularly preferable to use lecithin among them.

The water-based component may be any component that can be dissolved in water, and other than water, for example, propylene glycol, 1,3-butanediol, dipropylene glycol, glycerin, diglycerin, polyglycerin, aloe vera, and witch hazel ( witch hazel), witch hazel (hamamelis), cucumber, lemon, lavender, rose water and other plant extracts.

Examples of the ultraviolet absorber include benzophenone-based, PABA-based, cinnamic acid-based, and salicylic acid-based agents, and specifically, 4-tert-butyl-4'-methoxydibenzyl Methane, oxybenzone, 2-ethylhexyl p-methoxycinnamate, 2,4,6-para[4-(2-ethylhexyloxycarbonyl)aniline]-1,3,5-triazine, diethyl amino hydroxybenzyl benzoate hexyl benzoate, bisethylhexyloxyphenol methoxyphenyl triazine, etc.

Examples of antioxidants include tocopherol, ascorbic acid, and the like. Examples of cosmetic ingredients include vitamins, anti-inflammatory agents, and crude drugs. Examples of preservatives include parabens and phenoxyethanol. , 1,2-pentanediol, etc.

In the cosmetic for keratin fibers of the present invention, regardless of properties such as liquid, gel, cream, and solid ingredients, and formulations such as oily, water-in-oil, and oil-in-water, the oil is an oily, continuous phase. The water-in-oil type is preferred because it can particularly significantly effect the present invention, and the water content is preferably below 30%, preferably below 20%, preferably below 10%, and below 1% The one is better, and it may not contain it at all. The viscosity and the hardness in the form of solid content are not particularly limited unless there is a problem in usability.

The cosmetic for keratin fibers of the present invention refers to a cosmetic applied to hair, eyelashes, or eyebrows, and preferably applied to eyelashes or eyebrows. Preferably, it is a cosmetic for eyelashes. [Example]

Examples and comparative examples of the cosmetic material for keratin fibers of the present invention are shown below, and the present invention is specifically described, but the present invention is not limited to the following examples.

Examples 1 to 30 and Comparative Examples 1 to 5: Cosmetics for keratin fibers Cosmetics for oily keratin fibers of the formulations shown in the following Tables 1 to 3 were prepared, and the separation effect, the continuation of the cosmetic effect, the curl maintenance effect, the non-stickiness, the easy spreading, and the easy falling off by hot water were obtained. Evaluation was performed by the following method. The results are also combined and shown in Tables 1 to 3.

*1: Alkyl (meth)acrylate polymer Tg at 30°C (Nissetsu U-3712A (manufactured by Nippon Carbide Industrial Co., Ltd.)) *2, *3: Alkyl (meth)acrylate polymer Tg30℃ *4: (Meth) Alkyl Acrylate Polymer Tg15℃ *7: WHITE BEESWAX (Miki Chemical Industry Co., Ltd. melting point 63°C) *8: TOWAX-1F6 (made by Toa Chemical Co., Ltd., melting point 83°C) *12: BENTONE 38V BC (manufactured by Elementis Ltd.) *13: ISODODECANE (manufactured by IMCD) *14: LeopardKL2 (manufactured by Chiba Milling Corporation)

*9: EMALEX CC-18 (Made by Nippon Latex Corporation, melting point 55°C) *10: UnistarM-2222SL (Made by NOF Corporation, melting point 70°C) *15: LeopardTT2 (manufactured by Chiba Milling Corporation)

*5: Calculated Tg-9℃ of copolymer *6: BELSIL TMS 803 (manufactured by Asahi Kasei Wacker Silicone) *11: LIPWAX A-4 (manufactured by Japan Natural Products, melting point 93°C)

(Manufacturing method) A. The components (1) to (13), (15) and (16) were uniformly heated and dissolved at 110°C. B. Add component (14) and pre-dispersed components (17) to (20) to A, and mix them uniformly. C. B is filled in the container with a coating body, and the cosmetic for keratin fibers is obtained.

(evaluation method) The following evaluation items were evaluated by each of the following methods. (Assessment Item): (Assessment Viewpoint) A. Sustainability of makeup effect: After 6 hours of application, live a normal life and observe whether the makeup falls off due to sweat, etc. B. Separation effect: Observe whether the eyelashes are not tied even after repeated application for 3 times, and whether the eyelashes are separated one by one C. Easy to fall off by hot water: After 6 hours of application, use hot water (40°C) to remove the makeup, observe whether there is color movement around the eyes, and whether it can be removed without applying force D. Curling lasting effect: After 6 hours of coating, whether the curling degree after coating is still maintained E. No stickiness and easy extension: there is no stickiness during application, and even if repeated application, observe the feeling that each eyelash is intertwined and extended

Regarding the items A to E, the usability test was carried out by 20 evaluators specially evaluated for each sample. Each sample is applied to the eyelashes of all the evaluators, and each evaluator evaluates each item from A to E and divides it into 7 stages according to the following absolute evaluation criteria, and gives points. The average value was calculated in total and judged according to the following judgment criteria.

(absolute evaluation benchmark) (comment): (assessment) 6: very good 5: good 4: Slightly good 3 : Normal 2 : slightly worse 1 : bad 0 : very poor

(judgment criteria) (judgment): (average point of evaluation) ◎ : More than 5 points ○ : More than 3.5 points and less than 5 points △ : More than 2 points and less than 3.5 points × : 2 points or less

From the results in Tables 1 to 3, it is clear that the cosmetic materials for keratin fibers of Examples 1 to 30 of the present invention are compared with the cosmetic materials for keratin fibers of Comparative Examples 1 to 5, and the separation effect and the continuation of the cosmetic effect are found. Good properties, long-lasting effect of curling, no stickiness and can be easily unfolded, easy to fall off with hot water. On the other hand, in Comparative Example 1 in which the component (A) was not added but the bulk component (B) was added, the lasting effect of the cosmetic effect and the lasting effect of curling were good, but the cosmetic film was not uniform, and the separation effect or the separation effect could not be obtained. Those that are not sticky and easy to unfold are satisfactory, and those that are easy to fall off by hot water cannot be easily removed. In Comparative Example 2 in which the water-based latex of the alkyl acrylate/vinyl acetate copolymer was used as the substitute component (A), satisfactory results were obtained, such as being easy to fall off by hot water, but the durability of the cosmetic effect, Satisfactory separation effect, continuous curling effect, no stickiness and easy unfolding. In addition, in Comparative Example 3 using trimethylhydroxysilicic acid in place of the component (A), although excellent in the cosmetic lasting effect, etc., the separation effect, the curl lasting effect, the non-stickiness, and the ease of unfolding were not obtained. For those who are satisfied, it is easy to fall off with hot water and cannot fall off easily. In Comparative Example 4 in which polyethylene wax was used instead of component (B), the continuation of the cosmetic effect and the curl maintenance effect were excellent, but the separation effect was not obtained, and it was easy to spread without stickiness, and was easy to use with hot water. The point of shedding is satisfactory. In Comparative Example 5 to which the component (C) was not added, it was good that it was easy to fall off by hot water, but the viscosity was not sufficient, so the makeup effect was sustained, the separation effect, the curling effect, the stickiness, and the easy. Expansion is not sufficient.

Example 31: Oily liquid mascara (fiber-containing type) (Element) (%) (1) Lightweight flowing isoparaffin*16 Residual amount (2) Polymethyl silsesquioxane*17         10 (3) Alkyl Acrylate/Vinyl Acetate Copolymer*1 7 (4) Candelilla wax (melting point 72℃)*18     3 (5) Beeswax (melting point 63℃)*19     4 (6) Karnauru (melting point 83℃)*20     1 (7) (Ethylene/propylene) copolymer (melting point 95℃) 1 (8) Glyceryl hydroabietate*21             1 (9) Dextrin palmitate*22         4 (10) Polypropylene fiber (5T, 2mm) 0.5 (11) Phospholipid-treated rayon (Rayon) fiber (5T, 1mm) 1 (12) Nylon 66 fiber (17T, 2mm) 1 (13) PET fiber (6.3T, 2mm) 1 (14) Dimethicone treatment Cellulose fiber (6T, 2mm) 1 (15) Black iron oxide 8 (16) Propylene carbonate 1 (17) Dimethyldistearylammonium hectorite*12     4 (18) Silicon dioxide (average particle diameter 16nm) 1 (19)N-Lauryl-L-Lysine 3 (20) Talc 3 (21) Ethylhexylglycerol 0.2 (22) Chlorphenesin 0.1 (23) Lemon Fruit Extract 0.1 (24) Tocopherol 0.1 (25) Apricot kernel oil 0.1 (26)Olive fruit oil 0.1 (27) Squalane 0.5 (28) DPG 0.5 (29)PEG-1500 0.5 (30) Triethylhexanoin 0.2 (31) Sunflower seed oil 0.1 (32)Sesame oil 0.1 *16: IP solvent 1620MU (manufactured by Idemitsu Kosan Co., Ltd.) *17: SILFORM FLEXIBLE RESIN (made by Momentive) *18: Purified Candelilla Wax SR-3 (manufactured by Japan Natural Products) *19: SUPER REFINED BEESWAX (manufactured by Croda Japan) *20: Carnauba wax (manufactured by Machard Chemical) *21: Songjing KE-311 (manufactured by Arakawa Chemical Industry Co., Ltd.) *22: LeopardTL2 (manufactured by Chiba Milling Corporation)

(Production method) A. Components (1) to (9) are dissolved at 100°C and uniformly dispersed. B. Add ingredients (10) to (32) to A and mix uniformly. C. B is filled in the container with a brush, and it becomes a product.

The oil-based liquid mascara (fiber-containing type) of Example 31 of the present invention is excellent in the separation effect, the lasting effect of the makeup effect, and the lasting effect of the curling effect, is not sticky, can be easily unfolded, and is easily peeled off by hot water. By.

Example 32: Water-in-oil mascara (cream) (ingredients) (%) (1) Isododecane*13 Residual amount (2) Alkyl acrylate/vinyl acetate copolymer*1 10 (3) Trimethylhydroxysilicic acid*6 7 (4)Trifluoropropyldimethyltrimethylhydroxysilicic acid*23 3 (5) Rice wax (melting point 79℃)*24 3 (6) Beeswax (melting point 63℃) *19 4 (7) Carnauba wax (melting point 83℃)*18 4 (8) Microcrystalline wax (melting point 90℃)*25 2 (9) Hydrogenated lecithin 0.3 (10) Dextrin isostearate*26 0.5 (11) Dextrin myristate*27 2 (12) Dipolyhydroxystearic acid PEG-30 2 (13) Dimethiconol (100,000 mPa･s) 3 (14) Peach kernel oil 0.5 (15) Corn Oil 0.1 (16) Almond Oil 0.2 (17) BHT 0.1 (18) Chlorinated AL 0.2 (19) Paraffin 1 (20) Canina rose fruit oil 0.1 (21) Quaternium - 18 Hectorite 4 (22) Fumed silica 1 (23) Black iron oxide 5 (24) N-Lauryl-L-Lysine 0.5 ( 25) Spherical silica powder 0.5 (26) Mica 2 (27) Boron nitride 1 (28) Spherical cellulose (average particle diameter 5μm) 2 (29) Purified water 10 (30) Ethanol 5 (31) Acrylate Copolymer 5 (32) Butanediol 1 (33) Octanediol 0.2 *23: XS66-B8226 (Solid content 50% Cyclomethicone solution manufactured by Momentive) *24: Rice wax SS- I (manufactured by Bosoh Oil Co., Ltd.) *25: GS Wax S-45 (manufactured by Nippon Seiki Co., Ltd.) *26: Unifilma HVY (manufactured by Chiba Milling Co., Ltd.) *27: LeopardMKL2 (manufactured by Chiba Milling Co., Ltd.)

(Production method) A. The components (1) to (28) are heated at 100°C and uniformly mixed. B. Mix components (29) to (33) uniformly. C. Add B to A and emulsify it, and cool to room temperature. D. C is filled in a container as a product.

The water-in-oil type mascara (cream-like) of Example 32 of the present invention is excellent in separation effect, lasting makeup effect, and lasting effect of curling, is not sticky, can be easily unfolded, and is easily peeled off by hot water. .

Example 33: Oily eyebrow cosmetic (solid form) (Element) (%) (1) Beeswax (melting point 63℃)*7 (2) Sunflower seed wax (melting point 76℃)*28     6 (3) Carnauba wax (melting point 83℃)*18       3 (4) Alkyl Acrylate/Vinyl Acetate Copolymer*1     8 (5) Residual amount of isododecane (6) Dextrin palmitate*14 1.5 (7) 2-Decyltetradecanol 5 (8) Phenyl Glycol 1 (9)EDTA-2Na 0.01 (10) Mineral oil 0.5 (11) Lauryl glutamic acid bis(phytosterol/octyldodecyl) 0.4 (12) Dimerized dilinoleic hydrogenated rosin condensate 0.3 (13) Hexa(hydroxystearic acid/stearic acid/rosin acid) Dipentaerythritol 0.5 (14) DISTEARDIMONIUM HECTORITE*12         4 (15) Methyl methacrylate cross-linked polymer 2 (16) Carbon black 1 (17) 2% silicon oxide treated red iron oxide 2 (18) 2% silicon oxide treated yellow iron oxide 2 (19) Sericite 15 (20)Silanization treatment of silicic anhydride 1 (21) Natural Vitamin E 0.1 (22)Jojoba Seed Oil 0.1 (23) Shea Butter 0.1 (24) Dimethicone 0.1 (25) Phytosterols Oleic Acid 0.1 (26) Trimellitic acid tridecyl ester 1 1 (27) (eicosene/vinylpyrrolidone) copolymer 0.5 (28)Orange peel oil 0.01 (29)Jojoba Seed Oil 0.01 (30) Vitamin B3 0.01 (31)Honey 0.01 *28 Purified sunflower wax (manufactured by Hokoseki Oil Industry Co., Ltd.)

(Production method) A. The components (1) to (6) are heated and dissolved at 110°C. B. Add ingredients (7) to (31) in A and mix uniformly. C. B is melted and filled in a container to obtain a product.

The oily eyebrow cosmetic (in the form of a solid component) of Example 33 of the present invention is excellent in separation effect, durability of makeup effect, and continuous curling effect, is not sticky, can be easily unfolded, and is easily peeled off by hot water.

Claims (8)

A cosmetic for keratin fibers, which contains the following components (A) to (D); (A) Dispersion (Dispersion) of (A2) Alkyl Acrylate/Vinyl Acetate Copolymer Using (A1) Nonaqueous Solvent as Dispersion Medium (B) wax ester (C) Organo-modified clay minerals (D) Volatile oil. The cosmetic for keratin fibers according to claim 1, wherein the component (A2) the alkyl acrylate/vinyl acetate copolymer is a mixture of alkyl (meth)acrylate and vinyl acetate in a mass ratio of 30:70 to 95:5 range of copolymerizers. The cosmetic for keratin fibers according to claim 1 or 2, wherein the content of the component (A) is 0.4 to 15% by mass in terms of solid content. The cosmetic for keratin fibers according to any one of claims 1 to 3, wherein the content mass ratio of the components (A2) and (B) is (A2)/(B)=0.02 to 1.5. The cosmetic for keratin fibers according to any one of claims 1 to 4, wherein the Tg of the polymer of alkyl (meth)acrylate constituting the alkyl acrylate/vinyl acetate copolymer of component (A2) is 20 to 50 °C. The cosmetic for keratin fibers according to any one of claims 1 to 5, wherein the number average molecular weight of the component (A2) the alkyl acrylate/vinyl acetate copolymer is 50,000 to 500,000. The cosmetic for keratin fibers according to any one of Claims 1 to 6, wherein the component (B) contains a wax ester (B1) with a melting point of 40°C or higher and less than 70°C and a wax ester (B2) with a melting point of 70 to 90°C ). The cosmetic for keratin fibers according to any one of claims 1 to 7, wherein the component (A1) non-aqueous solvent is a volatile hydrocarbon oil.