JP2008143836A - Surface-treated powder and cosmetic containing the surface-treated powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic containing powder having excellent adhesivity to the skin and surface-treated with a perfluoroalkylsilane, while making the best use of properties of a fluoroalkyl group having an excellent control ability for the break of makeup by sweat and sebum. <P>SOLUTION: The cosmetic comprises (1) powder surface-treated with a perfluoroalkylsilane represented by general formula (I) and (2) titanium dioxide combined with another metal oxide. Preferably, the perfluoroalkylsilane represented by general formula (I) is triethoxy(-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl)silane, etc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cosmetic, and more particularly to a cosmetic containing a powder.

  In cosmetics, the powder has a function of covering undesired localization of pigments such as skin spots and freckles, etc., and making them inconspicuous due to its optical effect. For this reason, in such powder-containing cosmetics, the localization of the powder significantly impairs its original effect, and preventing it is the biggest challenge for powder cosmetics. . Such a powder localization phenomenon in powder cosmetics is regarded as “decoration of makeup” along with changes in liquid wetting. As a means for preventing such makeup breakage, methods for coating the surface of powder with various surface treatment agents are also known for “localization suppression” and “liquid wetting suppression”. As the agent, hydrogenmethylsiloxane baking, silylation with a silane coupling agent, coating with perfluoroalkyl phosphate, coating with N-acyl glutamate, coating with phospholipid, and the like are known. Among these, the coating with a surface treatment agent having a perfluoroalkyl group has both water and oil repellency, so it can prevent both localization due to sweat and sebum, thereby improving the durability of the makeup. For example, perfluoroalkylsiloxanes such as penta-3,3,3-trifluoropropylpentamethylcyclopentasiloxane are used as the technology using such a compound having a perfluoro group, which is a useful technology. Technology (for example, see Patent Literature 1, Patent Literature 2, and Patent Literature 3), technology using a phosphoric ester salt having a perfluoroalkyl group (eg, see Patent Literature 4 and Patent Literature 5), perfluoro Alkyl polyoxyalkylene co-modified organopolysiloxane (see, for example, Patent Document 6) or alkylsilane is carbon Has 6 to 30 alkyl group, treatment with a silane coupling agent number fluorocarbons perfluoroalkyl silane is from 1 to 30 (e.g., see Patent Document 7) or the like exists. However, there are cases where surface treatment with such a compound having a perfluoroalkyl group sometimes exhibits only the same long-lasting makeup as that of the non-treated one, and the development of a technology that can stably realize the goodness of long-lasting makeup. Was desired. Such a phenomenon is thought to be due to the cosmetics falling off due to physical factors such as wind and vibration because the interaction with the skin is weak. In particular, the fluoroalkyl group significantly reduces the coefficient of friction, so that adhesion to the skin may be impaired. On the other hand, triethoxy (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane, diethoxybis (- 8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane or ethoxytris (-8,8,8,7,7,6,6) The surface-treated powder using 6,5,5,4,4,3,3-tridecafluorooctyl) silane has already been sold by Daito Kasei Co., Ltd. Moreover, as titanium dioxide combined with other metal oxides, those sintered with iron oxide or the like (see, for example, Patent Document 8 and Patent Document 9), doped with metal oxide, that is, titanium dioxide Titanium dioxide (see, for example, Patent Document 10) or the like that is pressed into a crystal lattice is known as a raw material for cosmetics. Such products include commercially available products such as “Taipeke TTO-F-1,” “Taipeke TTO-F-2,” “Taipeke TTO-F-6” and the like, which are commercially available from Ishihara Sangyo Co., Ltd. Can be preferably exemplified. However, cosmetics containing 1) a powder whose surface is treated with perfluoroalkylsilane represented by the following general formula (I) and 2) titanium dioxide complexed with other metal oxides The fee is not known at all. Further, it is not known at all that the cosmetic material having such a constitution has an excellent makeup-holding effect against sweat and sebum.

JP 2005-289831 A JP 2003-40738 A JP-A-2005-213250 Japanese Patent Laid-Open No. 2004-189652 JP 2002-338429 A JP 2002-114663 A JP 2002-80748 A Japanese Patent Laid-Open No. 2002-241231 Japanese Patent Laid-Open No. 11-49637 Japanese Patent Laid-Open No. 11-279019

  The present invention has been made under such circumstances, and is made of a perfluoroalkylsilane that has excellent adhesion to the skin while taking advantage of the properties of a fluoroalkyl group that is excellent in the ability to suppress makeup collapse due to sweat and sebum. It is an object of the present invention to provide a cosmetic containing a powder that has been processed.

  In view of such a situation, the present inventors treated the surface with perfluoroalkylsilane, which has excellent adhesion to the skin, while taking advantage of the properties of the fluoroalkyl group, which is excellent in the ability to suppress makeup collapse due to sweat and sebum. As a result of earnest research efforts in search of cosmetics containing the resulting powders, powders whose surfaces have been treated with perfluoroalkylsilane and 2) complexed with other metal oxides The inventors have found that cosmetics containing titanium have such properties, and have completed the invention. That is, the present invention is as follows.

一般式（Ｉ）
（但し、式中ｎは２〜７の整数を表し、ｍは１〜３の整数を表し、ａは１〜３の整数を表し、Ｒは炭素数１〜３のアルキル基を表す。）

Formula (I)
(In the formula, n represents an integer of 2 to 7, m represents an integer of 1 to 3, a represents an integer of 1 to 3, and R represents an alkyl group having 1 to 3 carbon atoms.)

(1) 1) Contains powder having a surface treated with perfluoroalkylsilane represented by the following general formula (I) and 2) titanium dioxide complexed with other metal oxides Cosmetics.
(2) The perfluoroalkylsilane represented by the general formula (I) is triethoxy (-8,8,8,7,7,6,6,5,5,4,4,3,3-trideca). Fluorooctyl) silane, diethoxybis (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane or ethoxytris (-8,8) , 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3-tridecafluorooctyl) silane, the cosmetic according to (1).
(3) The cosmetic according to (1) or (2), wherein the powder to be treated is selected from sericite, mica and talc.
(4) The cosmetic according to any one of (1) to (3), further comprising a powder subjected to hydrophilic treatment.
(5) The hydrophilic treatment of the powder subjected to the hydrophilic treatment is a coating with a polymer or copolymer having (meth) acryloyloxyethyl phosphorylcholine as a constituent monomer (4) Cosmetics described in 1.
(6) The cosmetic according to (5), wherein the polymer or copolymer containing (meth) acryloyloxyethyl phosphorylcholine used for coating is polymethacryloyloxyethyl phosphorylcholine.
(7) The cosmetic according to any one of (1) to (6), which is a summer cosmetic.

  According to the present invention, it contains a powder whose surface is treated with perfluoroalkylsilane, which is excellent in adhesion to the skin, while taking advantage of the properties of a fluoroalkyl group that is excellent in the ability to suppress makeup collapse due to sweat and sebum. Cosmetics can be provided.

(1) Surface-treated powder that is an essential component of the cosmetic of the present invention The cosmetic of the present invention is obtained by subjecting powder to a surface treatment with perfluoroalkylsilane represented by the general formula (1) as an essential component. It is contained as an essential component. As the powder, a powder selected from sericite, mica and talc and treated with the general formula (1) is particularly preferable. This is because sericite, mica and talc all have a fat-soluble part and a water-soluble part, and have a plate-like structure, so that they are water-based components such as sweat and oily components such as sebum. This is because the probability of breaking the localization is particularly high. By subjecting such a powder to a surface treatment with the compound of the general formula (1), such cosmetic breakup can be remarkably reduced. In this way, when the powder is treated with the perfluoroalkylsilane represented by the general formula (1), it may be performed according to a normal silane coupling method. For example, the powder is diluted with a solvent or the like. It can be obtained by coating with perfluoroalkylsilane of the general formula (1) and baking at 100 to 300 ° C. while reducing the pressure as desired. Examples of the compound represented by the general formula (1) include triethoxy (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane, Diethoxybis (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane or ethoxytris (-8,8,8,7,7) , 6,6,5,5,4,4,3,3-tridecafluorooctyl) silane. There are already commercially available perfluoroalkylsilanes represented by the general formula (1), and such a commercially available product can be purchased and subjected to the treatment. As a commercially available product of perfluoroalkylsilane represented by the general formula (1), Dynasylan (trademark) F8261 (triethoxy (-8,8,8,7,7,6,6,5,5,4,4,4) 3,3-Tridecafluorooctyl) silane) can be preferably exemplified. The perfluoroalkylsilane represented by the general formula (1), which is such a silane coupling agent, can be used alone for surface treatment or in combination of two or more. The amount ratio of the preferable powder and perfluoroalkylsilane is 1:99 to 30:70, more preferably 2:98 to 10:90. After the perfluoroalkylsilane is uniformly coated with an appropriate solvent such as chloroform or methylene chloride in an amount of 1 to 100 times, silane coupling may be performed by heat treatment and dealcoholization reaction. Such a treated powder can be adjusted in this way, or a commercially available treated powder can be purchased and used. Examples of commercially available treated powder include FHS sericite (97 parts by mass of sericite sold by Daito Kasei Kogyo Co., Ltd., triethoxy (-8,8,8,7,7,6,6, 5,5,4,4,3,3-tridecafluorooctyl) silane powder treated with 3 parts by mass of silane), FHS mica (97 parts by mass of mica, triethoxy (-8,8,8, 7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane powder with 3 parts by mass of silane), FHS talc (97 parts by mass of talc, triethoxy) (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) powder treated with 3 parts by mass of silane) Can be illustrated. Such a powder can contain only one species or a combination of two or more species. The preferable content of the powder is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, based on the total amount of the cosmetic. Such a treatment can prevent sericite, talc, and mica from breaking down especially due to sweat and sebum. Further, these powders having a large surface area in contact with the skin and having a high friction reducing effect by the perfluoroalkylsilane do not show a significant friction reducing effect, thereby preventing physical falling off. This suppresses the localization of colored pigments such as iron oxide and UV-absorbing powders such as titanium dioxide, which may be combined with other metal oxides, and maintains a uniform cosmetic effect. I can do it.

(2) Titanium dioxide complexed with another metal oxide which is an essential component of the cosmetic of the present invention The cosmetic of the present invention contains titanium dioxide complexed with another metal oxide as an essential component. It is characterized by. Examples of other metals constituting such components include iron, silicon, zinc, zirconium, aluminum and the like. The composite form is a dope form in which another metal oxide is pressed into the crystal lattice of titanium dioxide, and the fine powder of the other metal oxide and the fine powder of titanium dioxide are baked at 500 to 1000 ° C. and hardened. There is a solid solution form in which a metal oxide or hydroxide is deposited on the surface of titanium dioxide, melted at a temperature of 1000 ° C. or more and dissolved with titanium dioxide, and solidified by cooling. Any of these can be used. These powders can be produced as described above, but commercially available products can also be purchased and used. Preferred commercially available products include “Yellow Titanium” (iron oxide / titanium dioxide sintered pigment) manufactured by Mie Pigment Co., Ltd., “Taipaque TTO-F1”, “Taipaque TTO-F2”, and “Taipaque TTO” manufactured by Ishihara Sangyo Co., Ltd. -F6 "(one obtained by solidifying silica, alumina, or zirconia on the surface of titanium dioxide) is preferred. The surface of these powders may be coated with hydrogen methyl polysiloxane, lecithin, N-acyl glutamate, polyethylene, metal soap, and the like. These powders are slightly inferior to titanium dioxide itself in hiding power from ultraviolet rays, but since radical generation is extremely suppressed after absorbing ultraviolet rays, the overall protective effect against ultraviolet rays is very good. In order to exhibit such excellent protective effects from ultraviolet rays, it is important that these powders do not impair the uniformity of their presence as the plate-like powder collapses. Such powder is preferably contained in such an amount that the protective effect against ultraviolet rays is expressed, specifically, it is preferably contained in an amount of 5 to 30% by mass, more preferably 7 to 25% by mass.

(3) Cosmetics of this invention The cosmetics of this invention contain the said essential component, It is characterized by the above-mentioned. The cosmetic of the present invention can be applied without particular limitation as long as it is in a dosage form that can usually contain powder. Examples of preferable dosage forms include water-in-oil emulsifier forms, oil-in-water emulsifier forms, oil gel dosage forms, solid powder dosage forms, and loose powder dosage forms. Particularly preferred is a dosage form that does not contain water and has an oil component content of 15% by mass or less, specifically a solid powder dosage form. This is because this form makes the most of the advantages of surface treatment.

  The cosmetics of this invention can contain the arbitrary components normally used with cosmetics other than the said essential component. Such optional ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, hydrogenated coconut oil Oil, wax, oils such as beeswax, owl, hardened castor oil, beeswax, candelilla wax, carnauba wax, botarou, lanolin, reduced lanolin, hard lanolin, jojoba wax , Hydrocarbons such as microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl Higher alcohols such as alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, di-2-ethylhexanoic acid ethylene glycol, dicaprate neopentyl glycol, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, tri Synthetic ester oils such as trimethylolpropane isostearate and pentane erythritol tetra-2-ethylhexanoate; dimethylpolysiloxane, methylphenylpoly Linear polysiloxanes such as oxane and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, Oil agents such as silicone oils such as modified polysiloxanes such as fluorine-modified polysiloxanes; Anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether of alkyl sulfates; Cationic surfactants such as stearyltrimethylammonium, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imida Zolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), and amphoteric surfactants such as acylmethyltaurine; sorbitan fatty acid esters (sorbitan) Monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (eg, glyceryl monostearate), propylene glycol fatty acid esters (eg, propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid ester Tells (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl) Ethers, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), Nonionic surfactants such as sucrose fatty acid ester and alkyl glucoside; polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene Polyhydric alcohols such as recall, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, 1,2-octanediol; sodium pyrrolidonecarboxylate Moisturizing ingredients such as lactic acid and sodium lactate; powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc. whose surface may be treated Body, the surface may be treated, inorganic pigments such as bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide; surface may be treated, mica Pearl agents such as titanium, fish phosphorus foil, bismuth oxychloride; red 202 which may be raked, red Color 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 No., green 201, purple 201, red 204, etc .; organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; para-aminobenzoic acid UV absorbers; anthranils Acid UV absorbers; salicylic acid UV absorbers; cinnamic acid UV absorbers; benzophenone UV absorbers; sugar UV absorbers; 2- (2′-hydroxy-5′-t-octylphenyl) benzo Ultraviolet absorbers such as triazole and 4-methoxy-4′-t-butyldibenzoylmethane; lower grades such as ethanol and isopropanol Alcohols; vitamin A or derivatives thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or derivatives thereof, vitamin B such as vitamin B12, vitamin B15 or derivatives thereof; α-tocopherol, β- Preferred examples include vitamins such as tocopherol, γ-tocopherol, vitamin E acetate and the like, vitamins D, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone, and the like; and antibacterial agents such as phenoxyethanol. Among these, it is particularly preferable that a hydrophilic surface-treated powder is contained in combination, and the hydrophilic surface-treated powder includes acrylic acid or methacrylic acid and 2 A powder coated with a polymer or copolymer having an ester with phosphorylcorinyl ethanol as a constituent monomer is particularly preferred. Such a polymer or copolymer already has a commercially available product, and such a commercially available product can be purchased and coated with powder. Examples of such commercially available products include “Lipidure HM” (polymethacryloyloxyethyl phosphorylcholine), “Lipidure PBS” (methacryloyloxyethyl phosphorylcholine / butyl methacrylate copolymer) and the like, which are sold by Nippon Oil & Fat Co., Ltd. . Further, talc is preferable as the surface-treated powder. The mass ratio of talc to the polymer or copolymer is preferably 99: 1 to 70:30, more preferably 98: 2 to 90:10. The coating treatment can be produced by spraying an aqueous solution of a polymer or copolymer onto the powder and drying it. The preferable content of such powder is 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass. In this amount ratio, the adhesion of the perfluoroalkylsilane surface-treated powder to the skin can be improved.

  The cosmetic of the present invention can be produced by treating these essential components and optional components according to a conventional method.

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

  A solid powder cosmetic (summer foundation), which is a cosmetic of the present invention, was produced according to the formulation shown below. In other words, after the ingredients of A were weighed into a Henschel mixer, mixed and stirred, pulverized with a pulverizer equipped with a 0.9mm round hole screen, returned to the Henschel mixer, and mixed while spraying the ingredients of B. The solid powder cosmetic 1 was obtained by pulverizing with a pulverizer equipped with a 1 mm herringbone screen, filling the pulverized material in a metal pan, and press molding. In the same manner, Comparative Example 1, “FHS sericite” in which “Typaque TTO-F6” was replaced with silicone-treated titanium dioxide, which was baked in 3% hydrogenmethylpolysiloxane (hereinafter sometimes simply referred to as silicone treatment). Comparative Example 2 in which was replaced with silicone-treated sericite, Comparative Example 3 in which 3% aluminum stearate-coated sericite was substituted, and Comparative Example 4 in which sericite was substituted were also prepared.

<Test Example 1>
About the solid powder cosmetic 1 which is the cosmetics of this invention, and Comparative Examples 1-4, the SPF value in 4 hours after application | coating was calculated | required. The method was in accordance with the provisions of JCIA2003, except that the sample administration was 4 hours before the measurement and the subject's behavior between application and measurement was left to the subject. For reference, the SPF value was also measured immediately after coating. The results are shown in Table 2. As shown in this table, it can be seen that the cosmetic of the present invention is excellent in the effect of maintaining the SPF value for a long time. This is an essential component, and the perfluoroalkylsilane represented by the general formula (1) used for the treatment of the perfluoroalkyl-treated powder has the property of being excellent in the ability to suppress makeup collapse due to sweat and sebum. In addition, this is because of excellent adhesion to the skin.

  Similarly to the solid powder cosmetic 1 of Example 1, a solid powder cosmetic 2 was produced according to the following formulation. When this was evaluated by the procedure of Test Example 1, the SPF immediately after coating was 33, and the SPF after 4 hours was 32.

  Similarly to the solid powder cosmetic 1 of Example 1, a solid powder cosmetic 3 was produced according to the following formulation. When this was evaluated by the procedure of Test Example 1, the SPF immediately after application was 29, and the SPF after 4 hours was 27.

  Similarly to the solid powder cosmetic 1 of Example 1, a solid powder cosmetic 4 was produced according to the following formulation. When this was evaluated by the procedure of Test Example 1, the SPF immediately after application was 30 and the SPF after 4 hours was 29.

  Similarly to the solid powder cosmetic 1 of Example 1, a solid powder cosmetic 5 was produced according to the following formulation. When this was evaluated by the procedure of Test Example 1, the SPF immediately after application was 28, and the SPF after 4 hours was 26.

  The present invention can be applied to summer cosmetics such as ultraviolet protective cosmetics.

Claims (7)

1) A cosmetic comprising a powder having a surface treated with a perfluoroalkylsilane represented by the following general formula (I) and 2) titanium dioxide complexed with another metal oxide.

Formula (I)
(In the formula, n represents an integer of 2 to 7, m represents an integer of 1 to 3, a represents an integer of 1 to 3, and R represents an alkyl group having 1 to 3 carbon atoms.) The perfluoroalkylsilane represented by the general formula (I) is triethoxy (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl). ) Silane, diethoxybis (-8,8,8,7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane or ethoxytris (-8,8,8, The cosmetic according to claim 1, wherein the cosmetic is 7,7,6,6,5,5,4,4,3,3-tridecafluorooctyl) silane. The cosmetic according to claim 1 or 2, wherein the powder to be treated is selected from sericite, mica and talc. The cosmetic according to any one of claims 1 to 3, further comprising a powder subjected to hydrophilic treatment. The hydrophilic treatment in the powder subjected to the hydrophilic treatment is coating with a polymer or a copolymer containing (meth) acryloyloxyethyl phosphorylcholine as a constituent monomer. Cosmetics. 6. The cosmetic according to claim 5, wherein the polymer or copolymer containing (meth) acryloyloxyethyl phosphorylcholine used for coating as a constituent monomer is polymethacryloyloxyethyl phosphorylcholine. The cosmetic according to any one of claims 1 to 6, wherein the cosmetic is a summer cosmetic.