JP2008031138A - Composite organic powder and cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide uniformly coated composite organic powder excellent in an effect for naturally visually covering the pigment troubles of skins, and to provide a cosmetic compounded with the powder. <P>SOLUTION: The composite organic powder is characterized by mechanically coating the surface of semi-spherical to approximately semi-spherical organic powder with an inorganic pigment treated with an octyltrialkoxysilane and having a primary particle diameter of <1 μm and further coating with a colored pigment and/or an organic dye, and the cosmetic compounded with the same. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, the surface of a semispherical to substantially hemispherical organic powder is mechanically coated with an octyltrialkoxyalkoxysilane-treated inorganic pigment having a primary particle diameter of less than 1 μm, and further coated with a color pigment and / or an organic dye. It is related with the composite organic powder and cosmetics which were excellent in the effect which hides the pigment | dye trouble of a skin more naturally visually by covering with.

  Skin pigment problems such as liver spots and pigment spots are psychologically burdensome for women. Recently, various treatments such as lasers have been developed rapidly. However, if symptoms are not severe or psychological resistance to going to the hospital, concealers are used to make up cosmetics. The percentage of women who are coping with them is also very high. There are two methods for concealing pigment troubles. One is a method of concealing pigment trouble itself using highly concealable aluminum flakes and titanium oxide as in Patent Document 1, and one is disclosed in Patent Document 2. As described above, there is a method of optically blurring the pigment trouble and making it not noticeable by using a light coherent material. In the former, high concealment cosmetics such as concealers have been sold in addition to special makeup, and it is effective for concealing small areas such as sparrow eggs (commonly called freckle), but when the area becomes slightly larger However, there is a problem that the whiteness of titanium oxide blended at a high concentration as a masking agent becomes conspicuous, resulting in an unnatural makeup or a makeup that clearly shows makeup. Because while the latter does not utilize a hiding power, there is a merit capable of handling relatively large area, sometimes absolutely interference color of the specular reflection direction is conspicuous due to the use of interfering materials, somewhat unnatural depending on the viewing angle There was a problem that gave an impression. Furthermore, if the color is canceled by using the complementary color of the skin pigment trouble site, even if the color is neutralized, the lightness often decreases. There was a problem that it was inevitable.

JP-A-5-58840 JP-A-8-81332

  On the other hand, when we coat the surface of an organic powder having a hemispherical to substantially hemispherical shape with an inorganic or organic material, the brightness at an angle of 70 to 80 degrees away from the incident angle of light is emphasized. Have been found to be able to obtain new optical materials. However, if the organic powder surface is to be uniformly coated with an inorganic or organic material without destroying the hemispherical to substantially hemispherical morphology of the base organic powder, the organic material may be added with other components. Relatively uniform treatment is possible, but in the case of inorganic materials, especially fine particle materials, the cohesive force of itself is strong, and aggregation of fine particles occurs, so it is difficult to uniformly coat the organic powder surface, On the other hand, when the mechanochemical compounding treatment of the organic powder and the inorganic material is performed, there is a problem that the hemispherical to substantially hemispherical shape of the organic powder is broken.

  Accordingly, as a result of intensive studies, the present inventors have conducted a mechanical coating process using static electricity, so that the surface of the organic powder having a hemispherical to substantially hemispherical shape can be easily and uniformly made inorganic, organic. We have found that it is possible to coat with materials. Charging characteristics can be achieved by changing the surface treatment of inorganic and organic materials. In particular, as the surface treatment with a large amount of charge is used, the organic powder can be uniformly coated. In this case, when tested with various materials, the effect of octyltrialkoxysilane treatment was particularly high as a surface treatment material. Since the treatment was also easily performed, the hemispherical to substantially hemispherical form of the organic powder was not broken.

And the present inventors mechanically coat the surface of hemispherical to substantially hemispherical organic powder obtained using such a technique with an octyltrialkoxyalkoxysilane-treated inorganic pigment having a primary particle diameter of less than 1 μm, Furthermore, when the optical properties of the composite organic powder characterized by being coated with a color pigment and / or an organic dye were investigated, the brightness at an angle of about 70 to 80 degrees away from the incident angle of light was emphasized. On the other hand, when this composite organic powder is applied to a substrate with high brightness such as white, the color of the colored pigment or organic pigment is emphasized, whereas the skin pigment trouble spots Although it is not a primary color, it has been found that the brightness is lowered compared with the surroundings, and the whiteness appears to be relatively improved in the colored portion. Therefore, in the part where the color is changing step by step like the pigment trouble part of the skin, the effect of visually concealing effectively and more naturally was recognized by applying this composite organic powder. .
This concealing effect can also be exhibited in cosmetics, and is effective in concealing pigment troubles.

The invention described in the present application basically includes the following configuration.
[1] By mechanically coating the surface of hemispherical to substantially hemispherical organic powder with an octyltrialkoxysilane-treated inorganic pigment having a primary particle diameter of less than 1 μm, and further coating with a colored pigment and / or an organic dye A composite organic powder characterized by being coated.
[2] The composite organic powder as described in [1], wherein the inorganic pigment is one or more selected from titanium oxide and zinc oxide.
[3] The composite organic powder according to [1] or [2], wherein the average primary particle diameter of the inorganic pigment is in the range of 1 to 50 nm.
[4] A cosmetic comprising the composite organic powder according to any one of [1] to [3] above.

  In the present invention, the surface of the hemispherical to substantially hemispherical organic powder is mechanically coated with an octyltrialkoxyalkoxysilane-treated inorganic pigment having a primary particle diameter of less than 5 μm, and further coated with a color pigment and / or an organic dye. Thus, it is clear that a more uniform coating is carried out, and a composite organic powder excellent in the effect of visually hiding skin pigment troubles more naturally and a combination cosmetic thereof are provided.

Hereinafter, the present invention will be described in detail.
In the constitution of the present invention, the surface of hemispherical to substantially hemispherical organic powder is mechanically coated with an octyltrialkoxysilane-treated inorganic pigment having a primary particle diameter of less than 5 μm, and further coated with a color pigment and / or an organic dye. The composite organic powder is characterized by being coated. The organic powder used in the present invention is not particularly limited as long as it has an average primary particle diameter in the range of 1 to 1000 μm and has a hemispherical to substantially hemispherical form including a substantially lens-like form. It may or may not contain pigments or pigments inside, for example, non-spherical fine particle polymer LMX made by Sekisui Plastics Co., Ltd., which is supplied industrially, whether synthetic or natural, is known. (See http://www.tech-p.com/product/development/biconvex.html. Searched on April 29, 2005) Also, wheat starch and tapioca starch have similar forms and are useful.
In addition, the average primary particle diameter referred to in the present invention is a value measured using (volume) average particle diameter or particle diameter measured from an electron micrograph when measuring the particle size distribution using laser light. means.

  In addition to being able to obtain a peculiar optical effect by making it hemispherical to substantially hemispherical, when blended into cosmetics, the amount of blended into the product is limited because the spherical powder is too slippery As a result, there is a problem that the effective effect is difficult to be obtained, but since there is no substantial limitation on the blending amount in the preparation when it is in a hemispherical to substantially hemispherical form, there is a merit that it is easy to achieve both feel and effect.

  When resin powder is used as the hemispherical organic powder used in the present invention, a resin formed from a synthetic resin such as an acrylic resin, a methacrylic resin, a vinyl resin such as a styrene resin, or a silicone resin is used. In addition, wheat starch and tapioca starch can be used.

  The hemispherical organic powder used in the present invention may or may not be surface-treated, but is preferably used as it is without being surface-treated. This is because if the charge potential of the organic powder changes, uniform coating in the subsequent process may not be possible.

  In the present invention, the surface of the hemispherical to substantially hemispherical organic powder is mechanically coated with an octyltrialkoxysilane-treated inorganic pigment having a primary particle diameter of less than 5 μm. The term “mechanical” refers to coating using a medium stirring type mill such as a ball mill, an attritor (for example, an attritor manufactured by Mitsui Mining Co., Ltd.), a bead mill, or a grinding device. As the medium, beads or rings such as zirconia, alumina, ceramics, and stainless steel can be used, and the size may be appropriately selected according to the apparatus. Further, the rotational speed of the apparatus varies depending on the size of the medium, the filling rate, etc., but it is important that the shape of the hemispherical to substantially hemispherical organic powder is not changed by the treatment. Since the shape of the hemisphere is unstable, there is a problem that if the processing conditions are strong, the peripheral portion is lost and fine powder is generated, resulting in poor optical characteristics and feel.

  For reference, an example of test conditions when the above-described attritor is used is shown below. The test is an example of a dry type. Alumina beads having a diameter of 5.5 mm are used as the filler. In the case of a vessel having a volume of 5 L, 7.7 kg of filler is charged, and a total of 0.5 kg of hemispherical to substantially hemispherical organic powder and octyltrialkoxyalkoxysilane-treated inorganic pigment is charged thereto, and the condition is 10 at 300 rpm. Mix for minutes. When implemented under these conditions, a powder in which the surface of the organic powder is uniformly coated with the octyltrialkoxysilane-treated inorganic pigment can be obtained while the shape of the hemispherical organic powder is properly maintained.

  The octyltrialkoxysilane-treated inorganic pigment used in the present invention has a primary particle diameter of less than 1 μm, more preferably in the range of 1 to 50 nm. The reason for selecting octyltrialkoxysilane is that the charging characteristics of the octyltrialkoxysilane-treated inorganic pigment are excellent. When the potential when various surface-treated pigments were contact-charged using a non-contact type static electricity measuring device was examined, silicone treatment, N-acylated amino acid treatment, organic titanate treatment, perfluoroalkyl phosphate ester salt treatment ( Those treated with octyltrialkoxysilane treatment are characterized by a large amount of charged potential compared with fluorine treatment) and untreated. When combined with the above hemispherical to substantially hemispherical organic powder, the larger the charging potential, the more uniform the surface of the hemispherical resin powder is. The alkoxy group of the octyltrialkoxysilane used in the present invention is preferably selected from a methoxy group, an ethoxy group, a propoxy group, and an isopropoxy group, and the ethoxy group is the most preferable in view of safety and cost during processing. preferable. In addition, it is preferable that a heat treatment is performed during the octyltrialkoxysilane surface treatment.

  The amount of octyltrialkoxysilane treated with respect to the inorganic pigment is preferably in the range of 0.1 to 15% by mass, more preferably in the range of 1 to 12% by mass with respect to the mass of the inorganic pigment. As a method for treating octyltrialkoxysilane with an inorganic pigment, for example, a method in which octyltrialkoxysilane is mixed with an inorganic pigment using a mixer or a bead mill, followed by heat treatment, or a method in which octyltrialkoxysilane is dissolved in a solvent After forming the inorganic pigment slurry using a mixer or bead mill, the method of removing the solvent and heat treatment, the method of adding octyltrialkoxysilane to the aqueous slurry of inorganic pigment, followed by filtration, drying and heat treatment, etc. Can be mentioned.

  In order to obtain the characteristic optical characteristics of the composite organic powder of the present invention, the inorganic pigment used in the octyltrialkoxysilane-treated inorganic pigment is preferably a material having a high refractive index, for example, selected from titanium oxide and zinc oxide. Is preferred. When an inorganic pigment having a primary particle size in the range of 1 to 50 nm and generally called fine particle powder is used as the octyltrialkoxysilane-treated inorganic pigment, the octyltrialkoxysilane-treated inorganic pigment is hemispherical to substantially hemispherical. The surface of the organic powder can be uniformly coated, and the optical effect of the present invention is very easily obtained.

  The composite organic powder of the present invention mechanically coats the surface of hemispherical to substantially hemispherical organic powder with an octyltrialkoxyalkoxysilane-treated inorganic pigment having a primary particle diameter of less than 5 μm, and further with a colored pigment and / or an organic dye. Cover. The color pigments and organic dyes mentioned here may or may not be surface-treated, but are particularly preferably treated with octyltrialkoxysilane because they can be treated more uniformly. Examples of color pigments and organic dyes include inorganic red pigments such as iron oxide, iron hydroxide and iron titanate, inorganic brown pigments such as γ-iron oxide, inorganic yellow pigments such as yellow iron oxide and loess, black oxidation Inorganic black pigments such as iron and carbon black, inorganic purple pigments such as manganese violet and cobalt violet, inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide and cobalt titanate, inorganic blue pigments such as bitumen and ultramarine Examples include tar dyes, tar dyes raked, natural dyes, natural dyes raked, and the like. Tar dyes include Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 227, Red 228, Red 230, Red 401, Red 505, Yellow 4, Color No. 5, Yellow No. 202, Yellow No. 203, Yellow No. 204, Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, Green No. 205 No., orange 201, orange 203, orange 204, orange 206, orange 207 and the like, and examples of natural pigments include carminic acid, laccaic acid, calsamine, bradylin, and crocin.

  As a method for coating these pigments and / or organic dyes with an octyltrialkoxysilane-treated inorganic pigment-coated hemispherical to substantially hemispherical organic powder, a method using a grinding device such as a ball mill as described above, etc. The coating method is most preferable, but after mixing each component in the solvent, the solvent is distilled off and the coating is performed, and in some cases, the mixture is heated, and the mixture of each component is spray dryer or fluidized granulation dryer. The method of using and drying can also be used.

  The ranges of the coating amounts of the hemispherical to substantially hemispherical organic powder, the octyltrialkoxysilane-treated inorganic pigment, the color pigment and / or the organic dye in the composite organic powder of the present invention are 50: It is preferably in the range of 50: 1 to 95: 5: 50.

  In this invention, the composite organic powder obtained in this way can be mix | blended with cosmetics. As a cosmetic, it is suitably used especially for those that visually blur pathological pigment troubles, spots, wrinkles and the like. Moreover, it can be used suitably also for a site where pigmentation such as lips occurs or deep wrinkles occur.

  In the cosmetic of the present invention, in addition to the above composite organic powder, various pigments used in cosmetics, ultraviolet absorbers, oils, surfactants, fluorine compounds, resins, adhesives, preservatives, fragrances, moisturizers, Components such as salts, solvents, antioxidants, chelating agents, neutralizing agents, pH adjusting agents, insect repellents, polymerization initiators, plasticizers, physiologically active components, catalysts, or thickeners can be used. It can also be used in combination with components such as titanium oxide and interference pearlescent agents that have been conventionally effective for pigment troubles, coloring materials that are complementary to pigment troubles, and silicone elastomer spherical powder. It can also be used in combination with physiologically active ingredients such as anti-inflammatory agents.

  Examples of the pigment used in the cosmetic of the present invention include titanium oxide, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, mica, kaolin, and sericite. , Muscovite, synthetic mica, phlogopite, saucite, biotite, lithia mica, silicic acid, anhydrous silicic acid, aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, strontium silicate , Metal tungstate, hydroxyapatite, vermiculite, hydrite, bentonite, montmorillonite, hectorite, zeolite, ceramic powder, dicalcium phosphate, alumina, aluminum hydroxide, boron nitride, boron nitride Silica etc .; Organic powders include polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, polyurethane powder, benzoguanamine powder, polymethylbenzoguanamine powder, polytetrafluoroethylene powder, polymethylmethacrylate powder, cellulose powder, silk Powder, nylon powder such as 12 nylon and 6 nylon, polyacryl powder, polyacryl elastomer, styrene / acrylic acid copolymer, divinylbenzene / styrene copolymer, vinyl resin, urea resin, phenol resin, fluororesin, silicon resin , Acrylic resin, melamine resin, epoxy resin, polycarbonate resin, microcrystalline fiber powder, starch powder, lauroyl lysine, etc .; As activator metal salt powder (metal soap), zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate, zinc cetyl phosphate, calcium cetyl phosphate, sodium cetyl phosphate, etc. Examples of pigments include inorganic red pigments such as iron oxide, iron hydroxide, and iron titanate, inorganic brown pigments such as γ-iron oxide, inorganic yellow pigments such as yellow iron oxide and loess, black iron oxide, and carbon black. Lake inorganic black pigments, inorganic purple pigments such as manganese violet and cobalt violet, inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide and cobalt titanate, inorganic blue pigments such as bitumen and ultramarine blue, and tar dyes , Natural pigment raked, and composite of these powders Synthetic organic powders, etc .; pearl pigments include titanium oxide coated mica, titanium oxide coated mica, bismuth oxychloride, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, fish scale foil, titanium oxide coated colored mica, titanium oxide / oxidized Iron-coated mica, etc .; As metal powder pigments, aluminum powder, copper powder, stainless steel powder, etc .; As tar dyes, red No. 3, red No. 104, red No. 106, red No. 201, red No. 202, red No. 204, Red 205, Red 220, Red 226, Red 227, Red 228, Red 230, Red 401, Red 505, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Yellow 204 No., Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Color No. 204, Green No. 205, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 206, Orange No. 207, etc .; natural pigments such as carminic acid, laccaic acid, calsamine, bradylin, crocin, etc. Is mentioned. The primary particle diameter of these pigments is not particularly limited as long as it is in the range of 1 nm to 30 μm, and the form thereof is not particularly limited, such as a spherical shape, a plate shape, a rod shape, a spindle shape, and an indefinite shape.

  Further, these pigments may or may not be subjected to various surface treatments for water repellency and hydrophilicity. Examples of surface treatments include, for example, methylhydrogenpolysiloxane treatment, silicone resin treatment, silicone gum treatment, acrylic silicone treatment, organosiloxane treatment such as fluorinated silicone treatment, metal soap treatment such as zinc stearate treatment, silane coupling, etc. Silane treatment such as agent treatment, alkylsilane treatment, organic titanate treatment, organic aluminate treatment, perfluoroalkylsilane, perfluoroalkyl phosphate ester salt, perfluoropolyether, fluorine compound treatment such as fluorinated acrylate treatment, N- Amino acid treatment such as lauroyl-L-lysine treatment, oil agent treatment such as squalane treatment, acrylic treatment such as alkyl acrylate treatment, inorganic oxide treatment such as silica, alumina, zirconia treatment, agar treatment, etc. seed It is possible to use a combination of above.

  Moreover, it is preferable to mix | blend the component which shows adhesiveness at the time of cosmetics application | coating, such as wax, resin, paste, gum, and a thickener, in the cosmetics of this invention. A composite organic powder having a hemispherical to substantially hemispherical shape has a characteristic that, when these components are blended, it is easy to spontaneously make a structure in which convex surfaces are arranged outside the skin by orienting on the skin. If these components are contained in the cosmetic in the range of about 0.1 to 15% by mass, more preferably in the range of 0.3 to 5% by mass, based on the total amount of the preparation, the optical properties are more There is an advantage that can be easily obtained.

  Examples of thickeners include gum arabic, tragacanth, arabinogalactan, locust bean gum (carob gum), guar gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), starch (rice, corn, potato, wheat) ), Plant polymers such as algae colloids, tant gum and locust bean gum, microbial polymers such as xanthan gum, dextran, succinoglucan and pullulan, animal polymers such as collagen, casein, albumin and gelatin, carboxymethyl starch , Starch-based polymers such as methylhydroxypropyl starch, methylcellulose, ethylcellulose, methylhydroxypropylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxy Propylcellulose, nitrocellulose, sodium cellulose sulfate, sodium carboxymethylcellulose, crystalline cellulose, cellulose polymers such as cellulose powder, alginic acid polymers such as sodium alginate and propylene glycol alginate, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc. Vinyl polymer, polyoxyethylene polymer such as polyethylene glycol, polyoxyethylene polyoxypropylene copolymer polymer, acrylic polymer such as sodium polyacrylate, polyethyl acrylate, polyacrylamide, polyethylene Imine, cationic polymer, bentonite, magnesium aluminum silicate, laponite, smectite, saponite, hectorite Examples include inorganic thickeners such as silicic anhydride, and oil-soluble gelling agents include metal soaps such as aluminum stearate, magnesium stearate, zinc myristate, N-lauroyl-L-glutamic acid, α, amino acid derivatives such as γ-di-n-butylamine, dextrin palmitate, dextrin stearate, dextrin fatty acid ester such as dextrin 2-ethylhexanoate palmitate, sucrose palmitate, sucrose stearate, etc. Benzylidene derivatives of sorbitol such as sucrose fatty acid ester, monobenzylidene sorbitol, dibenzylidene sorbitol, dimethylbenzyl dodecyl ammonium montmorillonite clay, dimethyl dioctadecyl ammonium montmorillo Gelling agent selected from organic modified clay minerals such as Itokure like. These may be used alone or in combination of two or more as required.

  Examples of oils include, for example, avocado oil, linseed oil, almond oil, ibotarou, eno oil, olive oil, cacao butter, kapok wax, kaya oil, carnauba wax, liver oil, candelilla wax, kyounin oil, whale wax, hardened oil, wheat germ Oil, sesame oil, rice germ oil, rice bran oil, sugarcane wax, sasanqua oil, safflower oil, shea butter, cinnamon oil, cinnamon oil, jojoballow, shellac wax, turtle oil, soybean oil, tea seed oil, camellia oil, evening primrose oil Corn oil, rapeseed oil, Japanese Kiri oil, Nukarou, germ oil, Persic oil, palm oil, palm kernel oil, castor oil, hydrogenated castor oil, castor oil fatty acid methyl ester, sunflower oil, grape oil, bayberry wax, jojoba oil, Macadamia nut oil, beeswax, cottonseed oil, cotton wax, molasses, mollusc kernel oil, montan C, palm oil, hydrogenated palm oil, tricoconut oil fatty acid glyceride, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin fatty acid isopropyl, hexyl laurate, POE lanolin alcohol ether, POE lanolin alcohol Acetate, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, egg yolk oil, etc .; hydrocarbon oils such as ozokerite, squalane, squalene, ceresin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax, petrolatum, etc. Higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, oleic acid, linol Linolenic acid, arachidonic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), isostearic acid, 12-hydroxystearic acid, etc .; higher alcohols include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, Hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyl decanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecinol, cholesterol, phytosterol, POE cholesterol ether, monostearyl glycerol ether (batyl alcohol), monooleyl glyceryl Ether (ceralkyl alcohol), etc .; ester oils include diisobutyl adipate, adipic acid 2-hexyldecyl, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate Trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, Triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2 sebacate Ethylhexyl, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearylate, dipentaerythritol fatty acid ester, isopropyl myristate, Octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, diisostearyl malate, etc. Glyceride oils include acetoglyceryl, glyceryl triisooctanoate, glyceryl triisostearate, glyceryl triisopalmitate, Glyceryl stearate, di-2-heptyl undecanoic acid, glyceryl trimyristate, diglyceryl, and the like myristyl isostearate.

  Various silicone compounds are also preferably used. For example, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane / methylphenylsiloxane copolymer, etc. Cyclic siloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane, tetramethyltetraphenylcyclotetrasiloxane, etc., highly polymerized gum-like dimethylpolysiloxane, gum Silicone gum such as a dimethylsiloxane / methylphenylsiloxane copolymer, and a cyclic polysiloxane solution of the silicone gum, trimethylsiloxysilicate, Cyclic polysiloxane solution siloxy silicic acid, higher alkoxy-modified silicones such as stearoxysilicone silicone, higher fatty acid-modified silicones, alkyl-modified silicones, amino-modified silicone, silicone resin, silicone resin, methyl trimethicone and the like.

Examples of the ultraviolet absorber used in the cosmetic of the present invention include homomenthyl salicylate, octocrylene, diparamethoxycinnamate mono-2-ethylhexanoate glyceryl, paraaminobenzoic acid and its ester, 4-tert-butyl-4 '-Methoxydibenzoylmethane, 4- (2-β-glucopyranosyloxy) propoxy-2-hydroxybenzophenone, octyl salicylate, methyl 2,5-diisopropylcinnamate, 2- [4- (diethylamino) -2- Hydroxybenzoyl] benzoic acid hexyl ester, sinoxate, dihydroxydimethoxybenzophenone, dihydroxydimethoxybenzophenone sodium disulfonate, dihydroxybenzophenone, dimethicodiethylbenzalmalonate, 1- (3,4-dimethoxyphenyl) Nyl) -4,4-dimethyl-1,3-pentanedione, dimethoxybenzylidenedioxoimidazolidinepropionate 2-ethylhexyl, tetrahydroxybenzophenone, terephthalylidene dicanfursulfonic acid, 2,4,6-tris [4- (2-Ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, methylbis (trimethylsiloxy) silylisopentyl trimethoxycinnamate, drometrizol trisiloxane, amyl paradimethylaminobenzoate, paradimethylaminobenzoic acid 2-ethylhexyl, octyl paramethoxycinnamate, isopropyl dimethoxycinnamate / diisopropyl cinnamate ester mixture, 2-hydroxy-4-methoxybenzophenone, hydroxymethoxybenzophenonesulfonic acid And trihydrate thereof, sodium hydroxymethoxybenzophenonesulfonate, phenylbenzimidazolesulfonic acid, ferulic acid, 2,2′-methylenebis (6- (2H-benzotriazol-2-yl) -4- (1,1,3) , 3-tetramethylbutyl) phenol) and the like.

Further, as alcohols, lower alcohols such as ethanol, propanol, isopropanol, sugar alcohols such as sorbitol, maltose, maltitol, etc., sterols, cholesterol, sitosterol, phytosterols, lanosterol, etc., glucose, sucrose, lactose, raffinose, Trehalose, xylitol, glycerin, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, polyglycerin, hyaluronic acid, chondroitin sulfate, pyrrolidone carboxylate, Polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside, ethyl glucosi Etc. The.

  In the cosmetics of this invention, it is possible to mix | blend said composite organic powder in the range of 1-99.9 mass% with respect to the total amount of cosmetics. In order to obtain an effective effect, it is preferable to mix the composite organic powder at a concentration as high as possible, more preferably 25 to 99.9% by mass with respect to the total amount of the cosmetic.

  The cosmetics of the present invention include makeup cosmetics such as foundation, concealer, blusher, white powder, eye shadow, mascara, eyeliner, face powder, lipstick, lip gloss, nail color, body powder, body milk or body lotion. And other basic cosmetics such as sunscreen, makeup base, emulsion, cream, milk, essence and other basic cosmetics, hair dyes, hair cosmetics such as hair manicure or hair spray, etc. Lipsticks and makeup bases have the advantage that the design effect of the composite organic powder can be easily obtained.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

  70 parts by mass of hemispherical organic powder (Techpolymer average primary particle size 10 μm, cross-linked polymethyl methacrylate, manufactured by Sekisui Plastics Kogyo Co., Ltd.) and 5% by mass of octyltriethoxysilane treated fine particle titanium oxide (silica / alumina treated product, average primary particle) 30 parts by mass (diameter 35 nm) was roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes. As a result of observing the surface state of the obtained powder using a scanning electron microscope, it was confirmed that the surface of the hemispherical organic powder was cleanly covered with octyltriethoxysilane-treated fine particle titanium oxide as shown in FIG. understood. Next, 100 parts by mass of the octyltriethoxysilane-treated fine particles of titanium oxide-coated hemispherical organic powder obtained here, and 30 parts by mass of red 202, which is a kind of organic dye, are treated with 5% by mass of octyltriethoxysilane. Were roughly mixed. A coating treatment was performed under the same conditions as described above to obtain a target composite organic powder. As a result of observing the processing state of this composite organic powder using a scanning electron microscope, a state where the particle surface was uniformly combined as shown in FIG. 2 was observed.

  10 parts by weight of this composite organic powder is mixed with 40 parts by weight of ethyl alcohol, mixed with 160 parts by weight of clear lacquer, and then pulverized with ultrasonic waves for 5 minutes using an applicator with a slit width of 0.1 mm to polyethylene terephthalate When the film was applied and dried, the film was not optically anisotropic, and no change in color or brightness was observed even at an angle of 60 degrees or more from the incident angle.

Comparative Example 1

  Fine particle titanium oxide not treated with octyltriethoxysilane was used in place of the 5% by mass treated fine particle titanium oxide used in Example 1 and composited with hemispherical organic powder under the same conditions as in Example 1. An example of a scanning electron micrograph of the obtained powder is shown in FIG. It can be seen that the surface of the hemispherical organic powder is not covered with fine particles and that the untreated part is exposed.

  A product was obtained in the same manner as in Example 1 except that octyltriethoxysilane 5 mass% treated red No. 202 used in Example 1 was used instead of octyltriethoxysilane 5 mass% treated red No. 201. An example of a scanning electron micrograph of the obtained composite organic powder is shown in FIG. 4, and it can be seen that the surface is uniformly treated. Moreover, although what applied to the film similarly to Example 1 was created, the optical anisotropy was not recognized by this film like Example 1. FIG.

  A product was obtained in the same manner as in Example 1 except that octyltriethoxysilane 5% by mass treated yellow No. 4 aluminum lake was used instead of octyltriethoxysilane 5% by mass treated red No. 202 used in Example 1. . An example of a scanning electron micrograph of the obtained composite organic powder is shown in FIG. 5, and it can be seen that the surface is uniformly treated. Moreover, although what applied to the film similarly to Example 1 was created, the optical anisotropy was not recognized by this film like Example 1. FIG.

  A product was obtained in the same manner as in Example 1 except that octyltriethoxysilane 5 mass% treated yellow No. 5 aluminum lake was used instead of octyl triethoxysilane 5 mass% treated red No. 202 used in Example 1. . An example of a scanning electron micrograph of the obtained composite organic powder is shown in FIG. 6, and it can be seen that the surface is uniformly treated. Moreover, although what applied to the film similarly to Example 1 was created, the optical anisotropy was not recognized by this film like Example 1. FIG.

  Octyltriethoxysilane 5% by mass treated fine particle zinc oxide (average primary particle size 35 nm) was used instead of the 5% by mass treated fine particle titanium oxide used in Example 1, and hemispherical organic powder and octyltriethoxysilane were used. A product was obtained in the same manner as in Example 1 except that the mixing ratio of 5% by mass treated fine particle zinc oxide was changed to 55 parts by mass: 45 parts by mass. The obtained composite organic powder was uniformly treated on the surface, and no optical anisotropy was observed when it was formed into a film.

  80 parts by mass of hemispherical organic powder (Sekisui Chemical Co., Ltd. Techpolymer average primary particle size 10 μm, crosslinked polymethyl methacrylate) and 5% by mass of octyltriethoxysilane treated alumina (alumina treated product, average primary particle size 0. 21 parts by mass) was roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes. Next, 100 parts by mass of the octyltriethoxysilane-treated titanium oxide-coated hemispherical organic powder obtained here and 30 parts by mass of red 201, which is a kind of organic dye, were treated with 5% by mass of octyltriethoxysilane. Roughly mixed. A coating treatment was performed under the same conditions as described above to obtain a target composite organic powder. When the treatment state of this composite organic powder was observed using a scanning electron microscope, a state in which the particle surface was uniformly composited was observed. Further, when the film was used, no optical anisotropy was observed.

  88 parts by mass of hemispherical organic powder (wheat starch) and 12 parts by mass of 5% by mass octyltriethoxysilane-treated fine particle titanium oxide (silica / alumina-treated product, average primary particle size 35 nm) were roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes. Next, 100 parts by mass of the octyltriethoxysilane-treated fine titanium oxide-coated hemispherical organic powder obtained here and yellow No. 5 aluminum lake, which is a kind of organic dye, were treated with 5% by mass of octyltriethoxysilane 50 The mass part was roughly mixed. A coating treatment was performed under the same conditions as described above to obtain a target composite organic powder. When the treatment state of this composite organic powder was observed using a scanning electron microscope, a state in which the particle surface was uniformly composited was observed. Further, when the film was used, no optical anisotropy was observed.

  70 parts by mass of hemispherical organic powder (wheat starch) and 30 parts by mass of octyltriethoxysilane 5% by mass-treated fine particle titanium oxide (silica / alumina-treated product, average primary particle size 35 nm) were roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes. Next, 100 parts by mass of the octyltriethoxysilane-treated fine titanium oxide-coated hemispherical organic powder obtained here and 20 parts by mass of 5% by mass of yellow No. 4, which is a kind of organic dye, are treated with octyltriethoxysilane. Were roughly mixed. A coating treatment was performed under the same conditions as described above to obtain a target composite organic powder. When the treatment state of this composite organic powder was observed using a scanning electron microscope, a state in which the particle surface was uniformly composited was observed. Further, when the film was used, no optical anisotropy was observed.

  70 parts by mass of hemispherical organic powder (wheat starch) and 30 parts by mass of octyltriethoxysilane 5% by mass-treated fine particle titanium oxide (silica / alumina-treated product, average primary particle size 35 nm) were roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes. Next, 100 parts by mass of the octyltriethoxysilane-treated fine particle titanium oxide-coated hemispherical organic powder obtained here and 10 parts by mass of yellow No. 5 (untreated) which is a kind of organic dye were roughly mixed. A coating treatment was performed under the same conditions as described above to obtain a target composite organic powder. When the treatment state of this composite organic powder was observed using a scanning electron microscope, a state in which the particle surface was uniformly composited was observed. Further, when the film was used, no optical anisotropy was observed.

A product was obtained in the same manner as in Example 1, except that 5% by mass of octyltriethoxysilane 5% by weight treated blue No. 1 aluminum lake was used instead of 5% by mass of octyltriethoxysilane 5% by weight treated in Example 1. . When the obtained composite organic powder was observed with a scanning electron microscope, it was found that the surface was uniformly treated. Moreover, although what applied to the film similarly to Example 1 was created, the optical anisotropy was not recognized by this film like Example 1. FIG.

Comparative Example 2

  70 parts by mass of hemispherical organic powder (Sekisui Plastics Industrial Techpolymer average primary particle size 10 μm, crosslinked polymethyl methacrylate) and 30 parts by mass of red No. 202 treated with 5% by mass of octyltriethoxysilane were roughly mixed. Using a dry attritor (Mitsui Mining Co., Ltd., volume 5 L), 7.7 Kg of alumina beads having a diameter of 5.5 mm were added as a filler, and 0.5 Kg of the above coarsely mixed raw material was added thereto, under the condition of 300 rpm. And mixed for 10 minutes.

Comparative Example 3

  In place of Red No. 202 treated with 5% by mass with octyltriethoxysilane used in Comparative Example 2, Red No. 201 treated with 5% by mass with octyltriethoxysilane was used to obtain a product in the same manner as Comparative Example 2. .

  Using the powders prepared in Examples and Comparative Examples, each powder was applied to the skin pigment trouble (liver spot) site and the vicinity of the vein on the back of the hand, and the difference in color between the non-trouble site and the non-vein site was observed. The evaluation results are shown in Table 1.

  From the results of Table 1, it can be seen that all of the examples of the present invention have the effect of visually blurring the skin pigment trouble and the color of veins, whereas the comparative examples have no effect or are weak.

Cosmetics were manufactured with the formulation and manufacturing method shown in Table 2 using the powders manufactured in the examples.
The unit of the blending amount is mass%.

  The powder components were mixed with a mixer. The liquid component which melt | dissolved uniformly was thrown in there, and also mixed. The obtained component was filled in a container to obtain a product.

  The product of Example 11 had a characteristic that when used on the skin, the pigmentation trouble, texture, and wrinkles of the skin were naturally blurred.

  Liquid foundations were produced using the powders produced in the examples according to the formulations and production methods shown in Table 3. The unit of the blending amount is mass%. The dimethicone copolyol / decamethylcyclopentasiloxane solution uses BY22-008M manufactured by Toray Dow Corning Co., Ltd., and KSG-16 manufactured by Shin-Etsu Chemical Co., Ltd. is used as the silicone gel. Pigment plastic powder D-800 was used.

  Component B was mixed well using a mixer. On the other hand, Component A was heated to 80 ° C. and mixed well so as to be uniform. To this, component B was gradually added with stirring and gradually cooled to 50 ° C. Next, Component C was heated to 80 ° C. and dissolved uniformly, and then slowly cooled to 50 ° C. Component C was added to component A under stirring, further stirred well, and cooled to room temperature. The obtained solution was filled in a container to obtain a product.

  The product of Example 12 had a characteristic that when used on the skin, it caused the skin pigment trouble, texture, and wrinkles to be naturally blurred.

Comparative Example 4

  The composite organic powders of Examples 2, 3, 4, and 10 used in Example 12 were obtained in the same manner as in Example 12 except that the respective constituent components were not compounded and were simply blended. .

  When the product of Comparative Example 4 was used on the skin, there was a merit that the skin looked bright, but the concealing effect such as pigment troubles as seen in Example 12 was slight.

  From the above results, it can be seen that the composite organic powder of the present invention effectively conceals pigment troubles when blended in cosmetics.

The example of the scanning electron micrograph of the hemispherical organic powder coat | covered with the octyl triethoxysilane 5 mass% process fine particle titanium oxide of Example 1 is shown. The example of the scanning electron micrograph of the red No. 202 compound organic powder created in Example 1 is shown. The example of the scanning electron micrograph of the hemispherical organic powder coat | covered with the untreated fine particle titanium oxide of the comparative example 1 is shown. The example of the scanning electron micrograph of the red No. 201 compound organic powder of Example 2 is shown. The example of the scanning electron micrograph of the yellow No. 4 compound organic powder of Example 2 is shown. The example of the scanning electron micrograph of the yellow No. 5 compound organic powder of Example 2 is shown.

Claims (4)

  The surface of the hemispherical to substantially hemispherical organic powder was mechanically coated with an octyltrialkoxyalkoxysilane-treated inorganic pigment having a primary particle size of less than 1 μm, and further coated with a color pigment and / or an organic dye. Composite organic powder characterized by   The composite organic powder according to claim 1, wherein the inorganic pigment is one or more selected from titanium oxide and zinc oxide.   The composite organic powder according to claim 1, wherein the average primary particle diameter of the inorganic pigment is in the range of 1 to 50 nm.   A cosmetic comprising the composite organic powder according to any one of claims 1 to 3.

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