JP2005132785A - Emulsion-type cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a non-nitrocellulosic/non-solvent cosmetic forming a durable cosmetic film, especially a manicure cosmetic having a long-term film-maintaining ability. <P>SOLUTION: The subject emulsion-type cosmetic containing a resin and an oil component besides the resin contains powder obtained by covering it with a core-shell type emulsion resin comprising an acrylic water-soluble polymer at the shell and a water-insoluble polymer at the core. The emulsion-type cosmetic can be applied not only to the manicure cosmetic but also to a foundation causing very little change of color with time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a beauty nail cosmetic, and more particularly to an emulsified beauty nail cosmetic that is a novel dosage form.

  Beauty nail cosmetics are cosmetics for dressing nails beautifully, and therefore contain a polymer compound for forming a film and powders, coloring materials and the like for producing optical effects. As a conventional beauty nail cosmetic, a product obtained by dissolving a water-insoluble polymer such as nitrocellulose in a solvent such as acetone or ethyl acetate and dispersing powders in the solution has been used. This is because the formed film must have water resistance and friction resistance so that it does not break or fall off due to daily actions, and nitrocellulose was selected as the film agent having such characteristics. It is. In such systems, the effects of organic solvents and the influence of nitrate ions derived from nitrocellulose may cause the nails to yellow when extended for a long period of time, resulting in less damage to the nails. There wasn't. In order to solve such problems, various aqueous nails using polymer emulsions obtained by emulsion copolymerization of a hydrophilic monomer and a hydrophobic monomer have been developed. (For example, refer to Patent Document 1, Patent Document 2, and Patent Document 3) However, in such a technique, although the yellowing of the nail can be surely prevented, the durability of the coating film such as uneven breakage occurs during long-time application. There remains a problem with sex. This is considered to be a problem of the affinity between the film, the powder that is an optical effect component, and the nail surface. That is, there has been a demand for development of a non-nitrocellulose / non-solvent beauty nail cosmetic that produces a durable cosmetic film.

  On the other hand, preparations using emulsification, which are related to nails, include a technique of emulsifying an organic solvent solution of a hydrophobic polymer and blending it into beauty nail cosmetics (for example, see Patent Document 4), emulsions There are nail care cosmetics in dosage form (see, for example, Patent Document 5). Further, a powder obtained by coating a powder with a core / shell type emulsion is already known. (For example, refer to Patent Document 6 and Patent Document 7) Furthermore, an aqueous beauty nail cosmetic containing such a coating powder is already known. However, in a beauty nail cosmetic containing a resin and containing an oil component in addition to the resin, the outer shell has an acrylic water-soluble polymer and a water-insoluble polymer in the inner core. A cosmetic containing a powder formed by coating a core-shell type emulsion resin is not known at all.

JP 2000-63241 A Japanese Patent Laid-Open No. 11-269041 JP-A-11-269040 Japanese Patent Laid-Open No. 11-209245 JP 2002-105318 A JP 2000-281533 A Japanese Patent Laid-Open No. 11-209242 JP 2000-273016 A

  The present invention has been made under such circumstances, and it is an object of the present invention to provide a non-nitrocellulose / non-solvent beauty nail cosmetic that provides a durable cosmetic film. .

In view of such circumstances, the present inventors have made extensive research efforts in search of cosmetics that are non-nitrocellulose and non-solvent beauty nail cosmetics that produce durable cosmetic films. As a result, in a beautiful nail cosmetic containing a resin and containing an oil component in addition to the resin, the core-shell type emulsion resin having an acrylic water-soluble polymer in the outer shell and a water-insoluble polymer in the inner core is coated. The present inventors have found that a cosmetic containing powder thus obtained has such characteristics, and has completed the invention. As a result of further studies, it was found that such a dosage form has remarkably excellent characteristics such as dullness not only in the nail polish but also in the field of foundations, and the invention was further developed. That is, the present invention relates to the following technique.
(1) In a cosmetic containing a resin and containing an oil component in addition to the resin, the core-shell type emulsion resin having an acrylic water-soluble polymer in the outer shell and a water-insoluble polymer in the inner core is coated. An emulsified cosmetic comprising a powder comprising:
(2) In the coating powder, the acrylic water-soluble polymer of the outer shell is selected from acrylic acid and its salt, methacrylic acid and its salt, acrylic ester, methacrylic ester, styrene and α-alkylstyrene. The emulsified cosmetic as set forth in (1), which contains one or more kinds as constituent monomers.
(3) The outer shell acrylic water-soluble polymer in the coated powder is selected from acrylic acid and salts thereof, methacrylic acid and salts thereof, acrylic ester, methacrylic ester, styrene and α-alkylstyrene. The emulsified cosmetic according to (1) or (2), wherein the emulsified cosmetic is one or more polymers and / or copolymers.
(4) The water-insoluble polymer of the inner core in the coated powder contains one or more selected from styrene, α-alkylstyrene, acrylic acid ester, and methacrylic acid ester as constituent monomers (1 ) To (3) The emulsified cosmetic according to any one of (3).
(5) One or two or more polymers and / or copolymers in which the water-insoluble polymer of the inner core in the coated powder is selected from styrene, α-alkylstyrene, acrylic acid ester, and methacrylic acid ester. The emulsified cosmetic according to any one of (1) to (4), which is a product.
(6) The coating powder is characterized in that a powder whose surface is previously treated with hydrogenmethylpolysiloxane, dimethylpolysiloxane and a silane coupling agent is used as a material to be coated (1) to (5) ) The emulsified cosmetic according to any one of the above.
(7) The emulsified cosmetic according to any one of (1) to (6), which contains a volatile oil as an oil.
(8) The emulsified cosmetic according to any one of (1) to (7), which contains a polyether-modified silicone as a surfactant.
(9) The emulsion-type cosmetic according to (8), wherein the polyether-modified silicone has a crosslinked structure.
(10) The emulsified cosmetic according to any one of (1) to (9), which is a beautiful nail cosmetic.

  According to the present invention, it is possible to provide a non-nitrocellulose / non-solvent cosmetic that produces a durable cosmetic film, and in particular, a beautiful nail cosmetic that has a long-term film maintenance ability.

<1> Powder formed by coating core-shell type emulsion resin, which is an essential component of the cosmetic of the present invention The cosmetic of the present invention contains a resin and contains an oil component in addition to the resin. And a powder obtained by coating a core-shell emulsion resin having an acrylic water-soluble polymer in the outer shell and a water-insoluble polymer in the inner core. Such a coated powder can be produced as described in Patent Document 6. The powder used as the base of such a coating powder can be used as a base without particular limitation as long as it is a powder that is usually used in cosmetics. Iron oxides such as titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, etc., Gunjo, bitumen, talc, sericite, mica, kaolin, silica, calcium silicate, magnesium silicate, methylsiloxane network polymer, cross-linked methyl Preferred examples include polysiloxane, titanium mica, titanium sericite and the like. These powders can be coated with the polymer as it is, or can be coated after the surface is treated in advance. As a surface treatment method, any treatment method that is usually used can be used without any particular limitation. For example, a silicone treatment by baking such as hydrogen methylpolysiloxane or dimethylpolysiloxane, or a silane coupling agent. Silane coupling treatment, perfluoroalkyl treatment with perfluoroalkyl phosphate, perfluoroalkylsilane, etc., metal soap treatment with metal soap such as zinc stearate, acylamino acid treatment, silica gel coating treatment with acyl glutamate, etc. Can be preferably exemplified. The substrate of the coating powder of the present invention is preferably subjected to a surface treatment, and in particular, a silicon treatment by baking such as hydrogenmethylpolysiloxane or dimethylpolysiloxane is preferred. As the surface-treated powder, a preferable surface treatment amount is 1 to 10% by mass with respect to the total amount of the powder.

  The polymer used for coating of the coating powder is a core-shell emulsion resin having an acrylic water-soluble polymer in the outer shell and a water-insoluble polymer in the inner core. Of course, in addition to such a polymer, it is also possible to arbitrarily coat a plasticizer, other polymer, etc. within a range not impairing the effect of the present invention. Belongs to a range. Such a resin is prepared by mixing a monomer constituting a water-insoluble polymer with azobisisobutyronitrile, cumene hydroperoxide, potassium persulfate, etc. in an aqueous solution of a water-soluble acrylic resin in the presence of a surfactant. It can manufacture by adding a polymerization initiator and making it polymerize. Preferred examples of the water-soluble acrylic resin include acrylic acid, methacrylic acid and salts thereof, and polymers containing vinyl alcohol and the like as constituent monomers. Specifically, acrylic acid and salts thereof, methacrylic acid and salts thereof, acrylic acid Preferable examples include one or more polymers and / or copolymers selected from esters, methacrylates, styrene and α-alkylstyrene. Among them, preferred is a polymer obtained by polymerizing only such constituent monomers. The water-insoluble polymer in the core part is a polymer and / or copolymer containing one or more selected from styrene, α-alkylstyrene, acrylic acid ester, and methacrylic acid ester as constituent monomers. Of these, polymers and / or copolymers having only these as constituent monomers are particularly preferable. Here, the ratio of core: shell is preferably 20:80 to 80:20, and more preferably 30:70 to 70:30.

  The ratio of the powder to the core-shell emulsion polymer in the coated powder is preferably 95.5: 0.5 to 50:50, and more preferably 99: 1 to 70:30. This is because if the amount of the polymer is too small, the coating effect may not be obtained, and if the amount of the polymer is too large, the characteristics of the powder may not be obtained. The coating powder of the present invention can be produced by treating the powder, the core-shell emulsion polymer, and the aqueous medium using a dispersion apparatus using media such as a sand grind mill or dyno mill. In the case of producing using such an apparatus, it is particularly preferable to use zirconia beads as a medium in terms of dispersibility and durability.

Production examples are shown below.
<Reference Example> Under a nitrogen stream, 200 parts by mass of methyl ethyl ketone was heated to reflux, and 62 parts by mass of α-methylstyrene, 10 parts by mass of 2-ethylhexyl acrylate, 28 parts by mass of acrylic acid, azobisisobutyronitrile 0 .5 parts by mass was dropped and reacted for 4 hours. This was neutralized with aqueous ammonia and concentrated under reduced pressure to remove methyl ethyl ketone. To this solution, 188 parts by mass of styrene and 15 parts by mass of 2-ethylhexyl acrylate were added dropwise, and 0.1 part by mass of potassium persulfate dissolved in 15 parts by mass of water was added and reacted for 4 hours. Furthermore, it heated at 90 degreeC, it cooled, and the core-shell type emulsion liquid (core-shell liquid 1) was obtained. The dry residue of this product was 72% by mass, and this was taken as the resin content. Further, this was a resin having a mass ratio of core: shell = 67: 33.

<Production Example 1> A liquid having the formulation shown below was charged into a sand grind mill together with 30 parts by mass of zirconia beads, and dispersed in the sand grind mill to obtain a resin coating powder dispersion 1.
Core shell solution 1 of reference example 1 10 parts by mass Silicone-baked titanium dioxide 50 parts by mass Water 40 parts by mass

<Production Example 2> A liquid having the formulation shown below was charged into a sand grind mill together with 30 parts by mass of zirconia beads, and dispersed with a sand grind mill to obtain a resin coating powder dispersion 2. The dispersion state of the powder in this liquid was extremely good.
Core shell solution 1 of reference example 1 10 parts by mass Silicone-baked yellow iron oxide 50 parts by mass Water 40 parts by mass

<Production Example 3> A liquid having the formulation shown below was charged into a sand grind mill together with 30 parts by mass of zirconia beads, and dispersed in the sand grind mill to obtain a resin coating powder dispersion 3. The dispersion state of the powder in this liquid was extremely good.
Core shell liquid 1 of reference example 10 parts by mass Silicone baking bengara (red) 50 parts by mass water 40 parts by mass

<Production Example 4> A liquid having the formulation shown below was charged into a sand grind mill together with 30 parts by mass of zirconia beads and dispersed in the sand grind mill to obtain a resin coating powder dispersion 4. The dispersion state of the powder in this liquid was extremely good.
Core shell liquid 1 of reference example 10 parts by mass Silicone baking bengara (purple) 50 parts by mass water 40 parts by mass

  Such a coated powder can be produced and used as such, but such a coated powder already exists on the market and can be purchased and used. . Examples of such commercially available products include hydrogen methylpolysiloxane baking powder sold by Taisei Kasei Co., Ltd., methyl methacrylate (MMA: about 80.7%), 2-ethylhexyl acrylate (2-EHA: about 8. 0%), triethylene glycol dimethacrylate (TGDMA: about 0.6%), glycidyl methacrylate (GMA: about 0.9%), and methacryloside (MAA: about 9.8%). These were emulsion-polymerized into a core-shell type (core part: methyl methacrylate and 1-ethylhexyl methacrylate, shell part: triethylene glycol dimethacrylate, glycidyl methacrylate and methacrylic acid) as described above, and obtained by neutralizing with ammonia water. T-coat which is powder-coated with resin Titanium (coating titanium dioxide with resin), T-coat T-3000 (coating red bengara), T-coating Bengala 79-P (coating purple bengara with resin), T-coating lemon (yellow iron oxide with resin) (Coating) can be suitably exemplified. The resin content of these materials is about 7 parts by mass, and the powder is 50 parts by mass. Since these are stable in quality, it is particularly preferable to purchase and use them.

  The content of the resin-coated powder in the cosmetic of the present invention is preferably 1 to 40 parts by mass, more preferably 2 to 30 parts by mass with respect to the total amount of the cosmetic. If this amount is too small, there may be cases where the optical effect of the powder cannot be utilized. If it is too large, the effect will reach its peak and the degree of freedom of other prescription ingredients may be impaired. Because it exists.

<2> Oily component which is an essential component of the cosmetic of the present invention The beauty nail cosmetic of the present invention is characterized by containing an oily component as an essential component. Examples of such oily components include hydrocarbons such as microcrystalline wax, olive oil-derived squalane, liquid paraffin, and light liquid isoparaffin used in cosmetics, dimethicone, cyclomethicone, phenylmethicone, cross-linked methylpolysiloxane, and amodimethicone. Silicones such as jojoba oil, octyldodecyl oleate, cetyl isooctanoate, esters such as cetyl stearate, glyceryl triisostearate, hydrogenated castor oil, hydrogenated palm oil, olive oil, glyceryl tristearate, glyceryl triiso Preferred examples include triglycerides such as stearate. Such components are preferably composed only of those that are liquid at 1 atm and 25 ° C., and more preferably have volatility with a boiling point of 200 ° C. or less at 1 atm. Such an oil agent component can contain only one species, or a combination of two or more species. Such an oil component has the effect of increasing the flexibility of the coating, improving the frictional properties, and improving the water resistance of the formed coating. The preferred content of the oil in the cosmetic of the present invention in the cosmetic of the present invention is preferably 10 to 30% by mass, more preferably 15 to 25% by mass, based on the total amount of the cosmetic. preferable.

<3> Cosmetics of the Present Invention The cosmetics of the present invention are characterized by containing the resin-coated powder, which is an essential component, and the oil component. The cosmetic of the present invention can be applied without particular limitation as long as it contains powder, but a beautiful nail cosmetic is preferable. This is because the cosmetic of the present invention has an excellent film maintenance function. In addition to this, a foundation with very little color change can be provided by including it in the foundation. In addition to these essential components, the cosmetic of the present invention takes an emulsified form as an essential component. For this reason, it contains a surfactant, a polymer compound having surface active ability, or a thickener having surface active ability. As surfactants, fatty acid soap (sodium laurate, sodium palmitate, etc.), anionic surfactants such as potassium lauryl sulfate, alkylsulfuric triethanolamine ether, stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide Cationic surfactants such as imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaines, amide betaines, Sulfobetaine, etc.), amphoteric surfactants such as acylmethyltaurine, sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (eg glyceryl monostearate), Lopylene glycol fatty acid esters (such as propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ether, POE sorbitan fatty acid esters (such as POE sorbitan monooleate, polyoxyethylene sorbitan monostearate), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerol fatty acid esters (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl) Ethers, etc.), POE alkylphenyl ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers (P E.POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), sucrose fatty acid esters, poly optionally having a crosslinked structure Nonionic surfactants such as ether-modified methylpolysiloxane and alkyl glucoside can be preferably exemplified, and polymers having surface activity ability include “Pemlen TR-1”, “Pemlen TR-2”, “Carbo” from Goodrich. An alkyl methacrylate / acrylic acid copolymer marketed under the name of “Paul 1382” and the like can be preferably exemplified, and as a thickener having a surface activity ability, an organic material such as pectin and bentonite whose surface is coated with a cationic surfactant can be used. Modified bentonite and the like can be suitably exemplified. Among these components, preferred are polyether-modified methylpolysiloxane and organically modified bentonite which may have a crosslinked structure, and more preferred are polyether-modified methylpolysiloxane and organically modified bentonite having a crosslinked structure. The preferable content of the polyether-modified methylpolysiloxane is 0.005 to 0.5% by mass, and 0.01 to 0.1% by mass. This is because if the amount is too small, emulsification may be difficult, and if the amount is too large, the durability of the coating may be impaired. The preferable content of the organically modified bentonite is 0.05 to 1% by mass, more preferably 0.1 to 0.5% by mass. This is because if the amount is too small, emulsification may be difficult, and if the amount is too large, the adhesion of the film to the nail may be impaired.

In addition to these components, the cosmetic of the present invention can contain optional components usually used in cosmetics. Examples of such optional components include polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene glycol, and 1,2-pentanediol. , 2,4-hexylene glycol, polyhydric alcohols such as 1,2-hexanediol, 1,2-octanediol, moisturizing ingredients such as sodium pyrrolidonecarboxylate, lactic acid, sodium lactate, guar gum, quince seed, carrageenan , Galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose Chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, kerato sulfate, locust bean gum, succinoglucan, caronine Thickeners such as acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinyl pyrrolidone, carboxy vinyl polymer, sodium polyacrylate, polyethylene glycol, bentonite, etc. Mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate, etc. Body, surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments, surface may be treated, mica titanium Pearl agents such as fish phosphorus foil, bismuth oxychloride, raked red 202, red 228, red 226, yellow 4, blue 404, yellow 5, red 505, red 230, red 223, orange 201, red 213, yellow 204, yellow 203, blue 1, green 201, purple 201, red 204, organic dyes, polyethylene powder, polymethacrylic acid Organic powders such as methyl, nylon powder, organopolysiloxane elastomer, paraaminobenzoic acid UV absorber, anthranilic acid UV absorber, salicylic acid UV absorber, Katsura Cinnamate UV absorber, benzophenone UV absorber, sugar UV absorber, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 4-methoxy-4'-t-butyldibenzoyl UV absorbers such as methane, lower alcohols such as ethanol and isopropanol, vitamin A or derivatives thereof, vitamin B ₆ hydrochloride, vitamin B ₆ tripalmitate, vitamin B ₆ dioctanoate, vitamin B ₂ or derivatives thereof, vitamin B ₁₂ , vitamin B ₁₅ such as vitamin B ₁₅ or its derivative, α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E such as vitamin E acetate, vitamin D, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone And the like are preferably exemplified. Of these, particularly preferred are galcoles, and it is particularly preferred to contain 1,3-butanediol. This is because such a component provides moisture retention to the nail, and becomes a plasticizer for the film to be formed, and can impart flexibility. The cosmetic of the present invention can be produced by treating these essential components and optional components according to a conventional method. The cosmetic composition of the present invention thus obtained is excellent in water resistance and friction resistance in the coating film to be formed, and is familiar with the coating film and powder, and with the coating material and biological components such as nails and skin, Thereby, the initial film state can be maintained for a long time. The wettability of the powder hardly changes and the color change with time is small. In addition, the state of the nail changes favorably with respect to the nail, after removing the film and before applying the cosmetic. In other words, it has the characteristic of being a nail cosmetic and a nail care cosmetic. In the foundation, it exhibits an excellent skin moisturizing function.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

<Example 1>
A beautiful nail cosmetic, which is an emulsified cosmetic of the present invention, was prepared according to the formulation shown below. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Then, it stirred and cooled and the emulsification type | formula nail cosmetic 1 of this invention was obtained. This was stable after storage at 40 ° C. for 1 month.
Idimethicone (10 Pascal seconds) 1 part by weight cyclomethicone 20 parts by weight cross-linked polyether-modified methylpolysiloxane 3.5 parts by weight sorbitan sesquilaurate 0.5 parts by weight organically modified bentonite 0.3 parts by weight butylparaben 0.1 Parts by mass 1,3-butanediol 5 parts by weight methylparaben 0.1 parts by weight quinomero 1,3-butanediol extract 0.1 parts by weight water 19.7 parts by weight haalkyl acrylate resin powder 5 parts by weight fine particle titanium dioxide 5 parts by mass fine particle zinc oxide 10 parts by mass of resin coating powder dispersion 1 of Production Example 1 25 parts by mass of resin coating powder dispersion 2 of Production Example 2 4.3 parts by mass of resin coating powder dispersion 3 of Production Example 3 0.1 part by mass Resin coating powder dispersion 4 of Production Example 4 0.3 part by mass

<Comparative Example 1>
According to the prescription shown below, a comparative nail material 1 which is a conventional beautiful nail material was prepared. That is, the prescription ingredients were well mixed and dispersed to obtain a comparative nail preparation 1.
1,3-butanediol 5 parts by weight methylparaben 0.1 part by weight Malmello 1,3-butanediol extract 0.1 part by weight water 45.1 parts by weight alkyl acrylate resin powder 5 parts by weight Resin-coated powder of Production Example 1 Body dispersion liquid 1 25 parts by mass of resin coating powder dispersion liquid 2 of production example 2 4.3 parts by mass of resin coating powder dispersion liquid 3 of production example 3 10.1 parts by mass of resin coating powder dispersion liquid 4 of production example 4 5.3 parts by mass

<Comparative example 2>
According to the prescription shown below, a comparative nail preparation 2 which is a conventional beautiful nail preparation was prepared. That is, the prescription ingredients were well mixed and dispersed, and then subjected to a roll mill to further homogenize the dispersed state, and comparative nail preparation 2 was obtained.
1,3-butanediol 5 parts by weight Methylparaben 0.1 part by weight Malmello 1,3-butanediol extract 0.1 part by weight Water 45.1 parts by weight Alkyl acrylate resin powder 5 parts by weight Titanium dioxide 12.5 parts by weight Yellow iron oxide 2.1 parts by weight Red bengara 5.1 parts by weight Purple bengara 2.7 parts by weight Core shell liquid of reference example 14.8 parts by weight

<Test Example 1>
A durability test was performed using the nail polish of Example 1, Comparative Example 1 and Comparative Example 2. The panelists prepared 10 people per group, 30 people per group, 1 group applied the emulsified beauty nail cosmetic 1 of Example 1 to the nail of the five fingers of the right hand, and 2 groups comparative nail preparation 1 Was applied to the nail of the five fingers of the right hand, and Group 3 applied the comparative nail preparation 2 to the nail of the five fingers of the right hand. They had their daily life without repainting for 4 days. Thereafter, the state of the applied nail polish was observed, and the locations of the dissipated portions of the cosmetic were counted. After counting, remove the cosmetics and let stand for 30 minutes, then observe the state of the nail with reference to the left hand, ○ if the state is better than left, △ if the same degree, × if bad Judgment was made. Table 1 shows the number of dissipated locations on the group average and the number of occurrences of ○ × Δ. From this, it can be seen that the emulsified beauty nail cosmetic of the present invention has excellent durability and nail care effect.

<Example 2>
A beautiful nail cosmetic of the present invention was prepared according to the formulation shown below. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Thereafter, the mixture was stirred and cooled to obtain an emulsified beauty nail cosmetic 2 of the present invention. This was stable after storage at 40 ° C. for 1 month.
Idimethicone (10 Pascal seconds) 1 part by weight cyclomethicone 20 parts by weight cross-linked polyether-modified methylpolysiloxane 3.5 parts by weight sorbitan sesquilaurate 0.5 parts by weight organically modified bentonite 0.3 parts by weight butylparaben 0.1 1 part by weight melamine 1,3-butanediol 5 parts by weight methylparaben 0.1 part by weight Malmello 1,3-butanediol extract 0.1 part by weight water 19.7 parts by weight haalkyl acrylate resin powder 5 parts by weight T-coat Titanium 25 parts by mass T-coat lemon 4.3 parts by mass T-coat T-3000 10.1 parts by mass T-coat Bengala 79P 5.3 parts by mass

<Comparative Example 3>
According to the prescription shown below, a comparative nail material 3 which is a conventional nail material was prepared. That is, the prescription ingredients were well mixed and dispersed to obtain a comparative nail material 3.
1,3-butanediol 5 parts by weight Methylparaben 0.1 part by weight Malmello 1,3-butanediol extract 0.1 part by weight Water 45.1 parts by weight Alkyl acrylate resin powder 5 parts by weight T-coated titanium 25 parts by weight T-coat lemon 4.3 parts by weight T-coat T-3000 10.1 parts by weight T-coat Bengala 79P 5.3 parts by weight

<Test Example 2>
In the same manner as in Test Example 1, the emulsified beauty nail cosmetic 2 and the comparison beauty nail material 3 were compared. The results are shown in Table 2. From this, even if it used the commercial item, the same effect was confirmed.

<Example 3>
A beautiful nail cosmetic of the present invention was prepared according to the formulation shown below. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Then, it stirred and cooled and obtained the emulsification type | formula nail cosmetic 3 of this invention. The product was slightly separated after 1 month of storage at 40 ° C. From this, it can be seen that a form containing organically modified bentonite is preferable.
Idimethicone (10 Pascal seconds) 1 part by mass cyclomethicone 20 parts by mass cross-linked polyether-modified methyl polysiloxane 4 parts by mass sorbitan sesquilaurate 0.5 parts by mass butyl paraben 0.1 part by mass 1,3-butanediol 5 3. part by weight methylparaben 0.1 part by weight quinome 1,3-butanediol extract 0.1 part by weight water 19.9 parts by weight haloalkyl acrylate resin powder 5 parts by weight T-coated titanium 25 parts by weight T-coated lemon 3 parts by mass T-coat T-3000 10.1 parts by mass T-coat Bengala 79P 5.3 parts by mass

<Example 4>
A beautiful nail cosmetic of the present invention was prepared according to the formulation shown below. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Then, it stirred and cooled and the emulsification type | formula beautiful nail cosmetic 4 of this invention was obtained. The product was slightly separated after 1 month of storage at 40 ° C. From this, it can be seen that a form containing a crosslinked polyether-modified methylsiloxane is also preferable.
Idimethicone (10 Pascal seconds) 1 part by weight cyclomethicone 20 parts by weight organically modified bentonite 4 parts by weight sorbitan sesquilaurate 0.5 parts by weight butyl paraben 0.1 part by weight 1,3-butanediol 5 parts by weight methyl paraben 0. 1 part by weight quince 1,3-butanediol extract 0.1 part by weight water 19.9 parts by weight Haalkyl acrylate resin powder 5 parts by weight T-coated titanium 25 parts by weight T-coated lemon 4.3 parts by weight T- Coat T-3000 10.1 parts by mass T-Coat Bengala 79P 5.3 parts by mass

<Example 5>
According to the prescription shown below, the foundation which is the cosmetic of the present invention was prepared. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Then, it stirred and cooled and obtained the emulsification type foundation 1 of this invention. This was stable after storage at 40 ° C. for 1 month.
Idimethicone (10 Pascal seconds) 1 part by weight cyclomethicone 20 parts by weight cross-linked polyether-modified methylpolysiloxane 3.5 parts by weight sorbitan sesquilaurate 0.5 parts by weight organically modified bentonite 0.3 parts by weight butylparaben 0.1 Parts by mass 1,3-butanediol 5 parts by weight methylparaben 0.1 parts by weight quinomero 1,3-butanediol extract 0.1 parts by weight water 19.7 parts by weight haalkyl acrylate resin powder 5 parts by weight fine particle titanium dioxide 5 parts by mass fine particle zinc oxide 10 parts by mass of resin coating powder dispersion 1 of Production Example 1 25 parts by mass of resin coating powder dispersion 2 of Production Example 2 4.3 parts by mass of resin coating powder dispersion 3 of Production Example 3 0.1 part by mass Resin coating powder dispersion 4 of Production Example 4 0.3 part by mass

<Comparative example 4>
According to the prescription shown below, Comparative Foundation 1 which is a conventional water-dispersed foundation was prepared. That is, the formulation components were well mixed and dispersed to obtain Comparative Foundation 1.
1,3-butanediol 5 parts by weight methylparaben 0.1 part by weight Malmello 1,3-butanediol extract 0.1 part by weight water 45.1 parts by weight alkyl acrylate resin powder 5 parts by weight fine particles titanium dioxide 5 parts by weight fine particles 10 parts by mass of zinc oxide 10 resin coating powder dispersion 1 of Production Example 1 25 parts of resin coating powder dispersion 2 of Production Example 2 4.3 parts of resin coating powder dispersion 3 of Production Example 3 0.1 mass Part of resin coating powder dispersion 4 of Production Example 4 0.3 parts by mass

<Test Example 3>
50 μl of the foundation 1 and the comparative foundation 1 were applied to a 2 cm × 4 cm portion provided on the inner side of the lower arm, and the color was measured immediately after application and 1 hour later, and the color change with time was determined as a color difference. Foundation 1 has a color difference ΔE of 0.45, Comparative Foundation 1 has a color difference ΔE of 0.73, and the cosmetic foundation 1 of the present invention has excellent color stability in application. I found out.

<Example 5>
According to the prescription shown below, the foundation which is the cosmetic of the present invention was prepared. That is, the components of A, B, and C were heated to 75 ° C., and the component of C was added to and dispersed in B, and this was gradually added and emulsified to the component of A while stirring, and the emulsified particles were prepared with a homogenizer. Thereafter, the mixture was stirred and cooled to obtain an emulsified foundation 2 of the present invention. This was stable after storage at 40 ° C. for 1 month. Further, the color stability with time was measured by the method of Test Example 3 and found to be 0.39.
Idimethicone (10 Pascal seconds) 1 part by weight cyclomethicone 20 parts by weight cross-linked polyether-modified methylpolysiloxane 3.5 parts by weight sorbitan sesquilaurate 0.5 parts by weight organically modified bentonite 0.3 parts by weight butylparaben 0.1 Parts by mass 1,3-butanediol 5 parts by weight methylparaben 0.1 parts by weight quinomero 1,3-butanediol extract 0.1 parts by weight water 19.7 parts by weight haalkyl acrylate resin powder 5 parts by weight fine particle titanium dioxide 5 parts by mass fine particle zinc oxide 10 parts by mass T-coated titanium 25 parts by mass T-coated lemon 4.3 parts by mass T-coated T-3000 0.1 parts by mass T-coated Bengala 79P 0.3 parts by mass

  The present invention can be applied to emulsified cosmetics having excellent durability.

Claims (10)

In a cosmetic containing a resin and containing an oil component in addition to the resin, a powder obtained by coating a core-shell emulsion resin having an acrylic water-soluble polymer in the outer shell and a water-insoluble polymer in the inner core An emulsified cosmetic comprising a body. In the coating powder, the acrylic water-soluble polymer in the outer shell is selected from acrylic acid and salts thereof, methacrylic acid and salts thereof, acrylic acid ester, methacrylic acid ester, styrene, and α-alkylstyrene. The emulsified cosmetic according to claim 1, wherein 2 contains two or more kinds as constituent monomers. In the coating powder, the acrylic water-soluble polymer in the outer shell is selected from acrylic acid and salts thereof, methacrylic acid and salts thereof, acrylic acid ester, methacrylic acid ester, styrene, and α-alkylstyrene. The emulsified cosmetic according to claim 1 or 2, wherein is a two or more kinds of polymers and / or copolymers. The water-insoluble polymer of the inner core in the coated powder contains one or more selected from styrene, α-alkylstyrene, acrylic acid ester, and methacrylic acid ester as constituent monomers. The emulsified cosmetic according to any one of the above. The inner water-insoluble polymer in the coated powder is one or more polymers and / or copolymers selected from styrene, α-alkylstyrene, acrylic acid ester, and methacrylic acid ester. The emulsified cosmetic according to any one of claims 1 to 4, wherein 6. The coating powder according to claim 1, wherein a powder whose surface is previously treated with hydrogenmethylpolysiloxane, dimethylpolysiloxane, and a silane coupling agent is used as a coating material. The emulsified cosmetic according to Item. The emulsified cosmetic according to any one of claims 1 to 6, characterized by containing a volatile oil as the oil. The emulsified cosmetic according to any one of claims 1 to 7, comprising a polyether-modified silicone as a surfactant. The emulsified cosmetic according to claim 8, wherein the polyether-modified silicone has a crosslinked structure. The emulsified cosmetic according to any one of claims 1 to 9, which is a beautiful nail cosmetic.