JP2001114623A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic having a wrinkle covering effect, a makeup lasting properties, sebum adsorbability, oil agent absorption retention, touch, etc. SOLUTION: This cosmetic comprises pulverized silicone elastomer spherical powder having 1-80 μm agglomerated particle diameter obtained by pulverizing high-order agglomerate of silicone elastomer spherical powder having 1-15 μm size as an average primary particle diameter by a dry type crusher having a shear mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic having excellent wrinkle concealing effect, long lasting, sebum-adsorbing property, oil-absorbing and retaining property, and feeling. More specifically, it is obtained by finely pulverizing a high-order aggregate of silicone elastomer spherical powder (and a mixture of lubricants) having a size of 1 to 15 μm as an average primary particle diameter using a dry pulverizer having a shearing mechanism. ,
Agglomerated particle diameter of silicone elastomer spherical powder is 1 to 8
The present invention relates to a cosmetic which is excellent in wrinkle concealing effect, sebum adsorbing property, oil agent absorption retaining property and feel by blending a finely pulverized silicone elastomer spherical powder characterized by being in the range of 0 μm.

[0002]

2. Description of the Related Art Silicone elastomer spherical powder was developed in the United States and Europe around 1970 as a material for paints. Thereafter, in the field of cosmetics, as disclosed in Japanese Patent Application Laid-Open No. 61-19409, it is a raw material with a long history of application that was started in the late Showa era. However, this material is not widely used for its history. One of the reasons is that it is difficult to mix the powder into cosmetics. Therefore, we have been studying a method of blending the silicone elastomer spherical powder into the cosmetic. For example, Japanese Patent Application Laid-Open No. Hei 7-2624 has developed a technique for modifying a silicone elastomer spherical powder so that it can be easily blended into cosmetics by using a sealed multi-stage type shearing extruder. In Japanese Patent Application Laid-Open No. Hei 9-71509, a method for treating the same powder using a wet pulverizer has been developed.

[0003]

However, the problems with these methods are that the production is troublesome and the productivity is low or the cost is high.

[0004]

Means for Solving the Problems In view of these problems, the present inventors have studied a modification method which is more productive and can be easily incorporated into cosmetics. Silicone elastomer spherical powders generally have a high-order aggregate structure in the form of tufts of grape, and if this is not well dispersed in cosmetics, a scum-like composite aggregate similar to the scum when using an eraser When the cosmetic is used, problems occur such as when the cosmetic is used, and in the case of powder foundation of a pressed cosmetic, the surface is broken when the metal plate is stamped or after the stamping. Accordingly, these problems were addressed by shearing the silicone elastomer spherical powder using a relatively low-cost dry pulverizer so that dispersion in cosmetics could be performed well.
Furthermore, by combining with a lubricant, the powder once sheared was prevented from re-adhering. These measures have enabled the development of better cosmetics.

That is, the first aspect of the present invention is to finely pulverize high-order aggregates of silicone elastomer spherical powder having an average primary particle diameter of 1 to 15 μm using a dry pulverizer having a shearing mechanism. The resulting aggregated particle diameter is 1
A cosmetic comprising a finely pulverized silicone elastomer spherical powder characterized by being in the range of ８０80 μm.

[0006] In the second invention, the average primary particle diameter is 1
A mixture of a high-order aggregate of a silicone elastomer spherical powder having a size of about 15 μm and a lubricant is finely pulverized using a dry pulverizer having a shearing mechanism. ~ 80 μm
Wherein the cosmetic comprises a finely pulverized silicone elastomer spherical powder.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION As the silicone elastomer spherical powder having an average primary particle diameter of 1 to 15 μm used in the present invention, there can be mentioned Trefil E series marketed by Dow Corning Toray Silicone Co., Ltd. . Specifically, trefill E-505C, trefill E-506C, trefill E-507, trefill E-
508, and the skeleton may or may not contain dimethylpolysiloxane. These powders can be basically obtained by reacting methyl hydrogen polysiloxane with a olefin modified at both ends with olefin under a platinum catalyst. Unless modified, these powders are rubbery and elastic powders, and when observed with an electron microscope, spherical primary particles aggregate into higher-order aggregates in a grape cluster. You can observe the state of being. These agglomerated particles are huge and often reach several hundred μm to several mm. Because this powder is rich in elasticity,
With a dry-type impact-type pulverizer (such as a pin mill or a hammer mill) that is usually used in cosmetics, the impact force is absorbed and it is not possible to pulverize well. Since the particles themselves are very soft, if the particles are classified using a mesh, static electricity is generated, and the particles fly around, and at the same time, the particles are united with each other, so that a fine powder cannot be obtained.

The pulverizer used in the present invention is a dry pulverizer such as a cutter mill, a turbo mill, an impeller mill, and has a shearing mechanism, preferably has a classification mechanism, and preferably has a rotary pulverizing mechanism. A rotating high-speed rotary pulverizer may be used. For example, as a cutter mill, a high-speed rotation type in which the rotation speed of a disk rotor is 700 min ^-1 or more is preferable. In addition, turbo mills and impeller mills are sometimes classified as high-speed rotary impact crushers by writing, but this device has multiple rotors with many blades around the circumference, and the casing has many grooves. This is a pulverizer having a mechanism having a liner and a powder mechanism by an impact shear force due to eddy current of air, rather than applying an impact force like a hammer mill. In addition, even when a stirring mixer such as a Henschel mixer is used, the blades are processed into a knife blade shape so as to apply a shearing force, and a high-speed rotation type (preferably, a rotation speed of 3000 min ^-1 or more) is controlled by inverter control or the like. ), It is possible to convert it to a dry pulverizer having the shear mechanism of the purpose. The crusher may be a vertical type or a horizontal type.

In the present invention, the degree of fine pulverization is such that the agglomerated particle size of the silicone elastomer spherical powder is 1 to 80 μm.
It must be ground to the range of m. 1 μm
If it is less than 10, primary particles are crushed and the feel is deteriorated.
When the thickness exceeds 0 μm, the aggregates become huge, and the aggregates become loose during use, and the feeling in use may be rough, which is not preferable. In the present invention,
As a result of the pulverization, it is preferable that the aggregation of the silicone elastomer spherical powder particles is reduced to about 10 or less,
More preferably, it is pulverized to single particles.
As a method of measuring the aggregated particle diameter, a small amount of a sample (fine powder) is placed on a sample stage of an electron microscope, and the shape is measured by a scanning electron microscope or a mapping diagram of silicon atoms of an X-ray microanalyzer is used. , A method for judging the size of aggregated particles, or a method of roughly dispersing (or ultrasonically dispersing) a compounded product in water, scooping it from below with a sample stage for an electron microscope, and conducting aggregation analysis using an X-ray microanalyzer mapping analysis. A method for measuring the size of the particles is exemplified.

In the present invention, it is preferable to use a lubricant together with the spherical silicone elastomer powder when pulverizing. Any lubricant may be used as long as it has a function of preventing adhesion between particles when pulverizing the silicone elastomer spherical powder. For example, a plate-like powder (talc, mica, sericite, kaolin,
Silicon powders such as boron nitride, plate-like barium sulfate, plate-like silicic acid anhydride, plate-like titanium oxide, N-lauroyl-L-lysine, metallic soap pigment, titanium mica, etc.), silicic anhydride, polymethylsilsesquioxane, etc. And spherical silica beads, but talc, sericite, and silicic anhydride are particularly preferred because of their high effects. The mixing ratio of the silicone elastomer spherical powder and the lubricant is preferably a mass ratio of silicone elastomer spherical powder / lubricant = 99/1 to 25/75.

The finely pulverized silicone elastomer spherical powder and the lubricant of the present invention may or may not be subjected to various surface treatments described below.

The amount of the finely pulverized silicone elastomer spherical powder in the present invention to be added to cosmetics is from 0.1 to 50.0% (mass percentage, the same applies hereinafter) in the total cosmetic composition, preferably pure silicone elastomer. 1.0-
15.0%. When the compounding amount is small, a smooth feel and wrinkle concealing effect of the silicone elastomer spherical powder cannot be obtained, and optical characteristics suitable for a wrinkle hiding effect cannot be obtained.When the compounding amount is large, the absorbability of oils and sebum is improved, but powder foundation and the like are not included. In the case of a pressed cosmetic, the moldability and the maintenance of the shape are significantly deteriorated.

In the cosmetic of the present invention, in addition to the finely divided silicone elastomer spherical powder thus obtained, oils, powders (pigments, pigments, resins), fluorine compounds, resins, surfactants which are usually used in cosmetics , Viscous agent, preservative, fragrance, ultraviolet absorber (including organic type and inorganic type, may correspond to any of UV-A and B), humectant, salt, solvent, antioxidant, chelate It is preferable to appropriately mix various components such as an agent, a neutralizing agent, a pH adjuster, an insect repellent, and a physiologically active component.

Examples of the powder include dyes such as red No. 104, red No. 201, yellow No. 4, blue No. 1, black No. 401, lake dyes such as yellow No. 4 Al lake, yellow No. 203 Ba lake, nylon Powder, silk powder, urethane powder, teflon powder, silicone powder, polymethyl methacrylate powder, cellulose powder, polymers such as polyethylene powder, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, ultramarine,
Colored pigments such as navy blue, white pigments such as titanium oxide and cerium oxide, extender pigments such as talc, mica, sericite, kaolin, plate-like barium sulfate, pearl pigments such as titanium mica,
Metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, and magnesium silicate; inorganic powders such as silica and alumina; bentonite, smectite, boron nitride, fine titanium oxide, fine zinc oxide, and the like. There is no particular limitation on the shape (spherical shape, true spherical shape, rod shape, needle shape, plate shape, irregular shape, scaly shape, spindle shape, etc.), size, and crystal type of these powders. The particle size distribution of the powder may be narrow or wide.

These powders may or may not be surface-treated. As the surface treatment, conventionally known surface treatments such as fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-
Examples include acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, and mechanochemical treatment. Among them, surface-treated powders using a fluorine compound such as perfluoroalkyl phosphate or perfluoroalkylsilane are preferable because they have excellent sebum resistance.

The oils include volatile and non-volatile oils and solvents and resins usually used in cosmetics, and may be liquid, paste or solid at normal temperature. Examples of oils include higher alcohols such as cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, octyl dodecanol, fatty acids such as isostearic acid, undecylenic acid and oleic acid, glycerin, sorbitol, ethylene glycol and propylene glycol. , Polyhydric alcohols such as polyethylene glycol, myristyl myristate, hexyl laurate, decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glyceryl monostearate, diethyl phthalate, ethylene glycol monostearate, octyl oxystearate Such as esters, liquid paraffin, hydrocarbons such as petrolatum, squalane, lanolin, wax such as reduced lanolin, carnauba wax, and mink , Cacao butter, coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil, oils such as olive, ethylene-alpha-olefin co-oligomer, and the like.

Examples of other forms of oils include dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyether-modified organopolysiloxane, and fluoroalkyl.
Polyoxyalkylene co-modified organopolysiloxane,
Alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicic acid, fluorine-modified silicone resin, silicone compound such as silicone RTV rubber, Fluorine compounds such as perfluoropolyether, fluorinated pitch, fluorocarbon, and fluoroalcohol are exemplified. Partially fluorinated or fully fluorinated oils improve sebum resistance,
This is preferable because it has the merit of improving the durability of the cosmetic.

Examples of the solvent include purified water, cyclic silicone, ethanol, light liquid isoparaffin, lower alcohol, ethers, LPG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, volatile linear silicone, next-generation Freon, etc. Is mentioned.

Examples of the surfactant include anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants. More specifically, fatty acid soap, α-acyl sulfonate, alkyl sulfonate, alkyl allyl sulfonate, alkyl naphthalene sulfonate, alkyl sulfate, alkyl ether sulfate, alkylamide sulfate, alkyl phosphate, alkyl Amidophosphate, alkylloylalkyltaurate, N-acylamino acid salt, sulfosuccinate,
Anionic surfactants such as perfluoroalkyl phosphates, alkyltrimethylammonium chloride, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, cetostearyltrimethylammonium chloride, distearyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, bromide Nonionic surfactants such as cationic surfactants such as behenyltrimethylammonium, alkanolamide laurate, POE sorbitan fatty acid ester, POE glycerin fatty acid ester, POE fatty acid ester, polyether-modified silicone, carboxybetaine type,
Amidobetaine type, sulfobetaine type, hydroxysulfobetaine type, amidosulfobetaine type, phosphobetaine type, aminocarboxylate type, imidazoline derivative type,
Amidoamine type and other amphoteric surfactants are exemplified. In addition, natural surfactants such as saponins and sugar surfactants can also be used. The surfactant may be hydrophilic or lipophilic.

Examples of the tackifier and resin include acrylate / methacrylate copolymer (plus size,
Vinyl acetate / crotonic acid copolymer (Resin 28-1310, manufactured by NSC), vinyl acetate / crotonic acid / vinyl neodecanoate copolymer (28-293)
0, manufactured by NSC), methyl vinyl ether maleic acid half ester (Gantrez ES, manufactured by ISP), t-
Butyl acrylate / ethyl acrylate / methacrylic acid copolymer (Rubimer, manufactured by BASF), vinyl pyrrolidone / vinyl acetate / vinyl propionate copolymer (Ruviscol VAP, manufactured by BASF), vinyl acetate / crotonic acid copolymer Merging (Rubi set CA, BASF
Co., Ltd.), vinyl acetate / crotonic acid / vinyl pyrrolidone copolymer (Rubiset CAP, manufactured by BASF), vinyl pyrrolidone / acrylate copolymer (Rubiflex, manufactured by BASF), acrylate / acrylamide copolymer (Ultrahold, BASF), vinyl acetate / butyl maleate / isobornyl acrylate copolymer (Advantage, ISP), carboxyvinyl polymer (Carbopol, BF GOODR)
ICH), cross-linked polyacrylic acid (Pemulen, B
F GOODRICH), acetic acid amphoteric dialkylaminoethyl methacrylate polymer (Yukaformer, manufactured by Mitsubishi Chemical Corporation), octylacrylamide acrylate / hydroxypropyl acrylate / butylaminoethyl methacrylate An amphoteric polymer compound such as a polymer (AMPHOMER, manufactured by NSC) or a quaternary product of vinylpyrrolidone / dimethylaminoethyl methacrylate (GAFQUAT, manufactured by ISP);
Cationic polymer compounds such as methylvinylimidazolium chloride / vinylpyrrolidone copolymer (Rubicoat, manufactured by BASF), polyvinylpyrrolidone (Rubiscol K, manufactured by BASF), vinylpyrrolidone / vinyl acetate copolymer (Rubicol) VA, manufactured by BASF), vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer (Copolymer 937, manufactured by ISP), vinylcaprolactam / vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer (copolymer VC713, ISP)
Nonionic polymer compounds, etc.). In addition, cellulose or derivatives thereof, keratin and collagen or derivatives thereof, calcium alginate, pullulan, agar, gelatin, tamarind seed polysaccharide, xanthan gum, carrageenan, high methoxyl pectin, low methoxyl pectin, guar gum, gum arabic, crystalline cellulose, arabino Naturally occurring polymer compounds such as galactan, karaya gum, tragacanth gum, alginic acid, albumin, casein, curdlan, gellan gum, and dextran can also be suitably used.

Examples of the physiologically active ingredient include substances that give some physiological activity to the skin when applied to the skin. For example, whitening ingredients, anti-inflammatory agents, anti-aging agents, UV protection agents, slimming agents, tightening agents, antioxidants, humectants, blood circulation promoters, antibacterial agents, bactericides, drying agents, cooling agents, warming agents ,
Vitamins, amino acids, wound healing promoters, stimulants,
Examples include an analgesic, a cell activator, an enzyme component, and a skin coloring agent. Among them, natural plant extract components, seaweed extract components, and crude drug components are particularly preferable. In the present invention, it is preferable to mix one or more of these physiologically active components.

Examples of these components include Ashitaba extract, Avocado extract, Amacha extract, Althea extract, Arnica extract, Aloe extract, Apricot extract, Apricot kernel extract, Ginkgo extract, Fennel extract, Turmeric extract, Oolong tea extract, Agetsu Extracts, Echinashi leaf extract, oak extract, oak extract, spinach extract, barley extract, hypericum extract, scotch extract, Dutch mustard extract, orange extract, seawater dried product, seaweed extract, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk , Chamomile extract, carrot extract, sagebrush extract, licorice extract, calcade extract, syllium extract, kiwi extract, kina extract, cucumber extract, guanosine,
Gardenia extract, Kumazasa extract, Clara extract, Walnut extract, Grapefruit extract, Clematis extract, Chlorella extract, Mulberry extract, Gentian extract,
Black tea extract, yeast extract, burdock extract, rice bran extract, rice germ oil, comfrey extract, collagen,
Cowberry extract, Saishin extract, Psychoextract, Saitai extract, Salvia extract, Sabonso extract, Sasa extract, Hawthorn extract, Sansho extract, Shiitake extract, Jio extract, Shikon extract, Perilla extract, Shinanoki extract, Shimotsukeiso extract, Peony extract, Shobu root extract , Birch extract, horsetail extract, vegetative extract, hawthorn extract,
Western elderberry extract, Achillea millefolium extract, Common mint extract, Sage extract, Genus mallow extract, Senkyu extract, Assembly extract, Soybean extract, Tissou extract, Thyme extract, Tea extract, Clove extract, Chigaya extract, Chimpanzee extract, Touki extract, Calendula extract, Tonin extract , Spruce extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract, nobara extract, hibiscus extract, bakkumondou extract, parsley extract, honey, hamamelis extract, Parietaria extract, chickpea extract, bisabolol, loquat extract, coltsfoot extract , Fukinotou extract, kukuroyou extract, butcher bloom extract, grape extract, propolis, loofah extract, safflower Vinegar, peppermint extract, lime extract, button extract, hops extract, pine extract, horse chestnut extract, skunk cabbage extract, Sapindus extract, Melissa extract, peach, cornflower extract, eucalyptus extract, saxifrage extract, Yuzuekisu,
Yokuinin extract, mugwort extract, lavender extract,
Examples include apple extract, lettuce extract, lemon extract, astragalus extract, rose extract, rosemary extract, Roman chamomile extract, royal jelly extract and the like.

Also, biopolymers such as deoxyribonucleic acid, mucopolysaccharides, sodium hyaluronate, sodium chondroitin sulfate, collagen, elastin, chitin, chitosan, hydrolyzed eggshell membranes, amino acids, sarcosine,
Amino acid derivatives such as N-methyl-L-serine, moisturizing components such as sodium lactate, urea, sodium pyrrolidone carboxylate, betaine, whey, raffinose, sphingolipids, ceramides, cholesterol, cholesterol derivatives, oily components such as phospholipids, ε -Aminocaproic acid,
Anti-inflammatory agents such as glycyrrhizic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, hydrocortisone, vitamins A, B ₂ , B ₆ , C, D, E, calcium pantothenate, biotin, nicotinamide, and vitamin C
Active ingredients such as vitamins such as esters, allantoin, diisopropylamine dichloroacetic acid, and 4-aminomethylcyclohexanecarboxylic acid; antioxidants such as tocopherol, carotenoids, flavonoids, tannins, lignans, and saponins; α-hydroxy acids and β-hydroxy Cell activators such as acids, blood circulation promoters such as γ-oryzanol, vitamin E derivatives, wound healing agents such as retinol, retinol derivatives, arbutin, kojic acid, placenta extract, sulfur, ellagic acid, linoleic acid, tranexamic acid, glutathione Whitening agents such as cepharanthin, licorice extract, hinokitiol, garlic iodide extract, pyridoxine hydrochloride, dl-α-tocopherol acetate, dl-α-tocopherol acetate, nicotinic acid, nicotinic acid derivatives, camphor,
Salicylic acid, 1-menthol, γ-aminobutyric acid and the like. Among them, it is particularly preferable to combine the antioxidant with a component having an anti-inflammatory effect, a moisturizing effect, or an antioxidant effect.

Examples of the organic ultraviolet absorber include 2-ethylhexyl paramethoxycinnamate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-
Methoxybenzophenone-5-sulfuric acid, 2,2′-dihydroxy-4-methoxybenzophenone, p-methoxyhydrocinnamic acid diethanolamine salt, paraaminobenzoic acid (hereinafter abbreviated as PABA), ethyldihydroxypropyl PABA, glyceryl PABA, homomenthyl salicylate , Methyl-O-aminobenzoate, 2-ethylhexyl-2-cyano-3,3-diphenylacrylate, octyldimethyl PABA, octyl salicylate, 2-phenyl-benzimidazole-5-sulfate, triethanolamine salicylate, 3- (4 -Methylbenzylidene) camphor, 2,4-dihydroxybenzophenine, 2,2 ', 4,4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-h Proxy -4-N-octoxybenzophenone, 4-isopropyl dibenzoylmethane, butyl methoxydibenzoylmethane, 4- (3,4
-Dimethoxyphenylmethylene) -2,5-dioxo-
2-ethylhexyl 1-imidazolidinepropionate,
Octyl triazone, their polymer derivatives, silane derivatives and the like can be mentioned. Further, among these organic ultraviolet absorbers, 2-ethylhexyl paramethoxycinnamate,
4-tert-Butyl-4'-methoxydibenzoylmethane is particularly preferably used.

It is also possible to use an organic ultraviolet absorber sealed in a polymer powder. The polymer powder may or may not be hollow, and the average primary particle size may be in the range of 0.1 to 50 μm, and the particle size distribution may be broad or sharp.
Examples of the type of polymer include acrylic resin, methacrylic resin, styrene resin, urethane resin, polyethylene, polypropylene, polyethylene terephthalate, silicone resin, nylon, and acrylamide resin.
In these polymer powders, 0.1-30% of the powder mass
In the range, a powder incorporating an organic ultraviolet absorber is preferable, and in particular, a UVA absorber, 4-tert-butyl-
It is preferable to mix 4'-methoxydibenzoylmethane.

The UV protection component, whether organic or inorganic, is preferably used together with the finely divided silicone elastomer spherical powder of the present invention. Generally, the UV protection component gives a less favorable effect on the feel, but a more favorable feel can be obtained by combining with the finely pulverized silicone elastomer spherical powder of the present invention. The compounding amount of the organic ultraviolet absorber is preferably from 0.1 to 10%, more preferably from 1 to 10%, based on the mass of the cosmetic.

The cosmetics of the present invention include, for example, milky lotions, creams, lotions, calamine lotions, sunscreens, suntans, aftershave lotions, preshave lotions, packs, cleansings, facial cleansers, anti-acne cosmetics, essences, etc. Basic cosmetics,
Makeup cosmetics such as foundation, white powder, eyeshadow, eyeliner, eyebrow, teak, lipstick, nail color, shampoo, rinse, conditioner, hair color, hair tonic, set agent, body powder, deodorant, depilatory, soap, Examples include body shampoos, bath salts, hand soaps, perfumes, etc., and are particularly suitable for foundations and lipsticks.

The dosage form of the cosmetic of the present invention may be a two-layer,
Conventionally known dosage forms such as a water-in-oil emulsion, an oil-in-water emulsion, a gel, a spray, a mousse, an oil, a solid, a powder, a granule, and a sheet can be used.

[0029]

The present invention will be described below in detail with reference to production examples, examples and comparative examples. In addition, evaluation methods for various properties of the cosmetics obtained in Examples and Comparative Examples are shown below.

Evaluation of Sensory Characteristics The sensory characteristics of the prototype were evaluated using ten specialized panelists. For each sensory characteristic, +5 points for excellent cases,
In the case of inferiority, one point was given, and the score was evaluated in a total of five levels, and the evaluation result was given by the total score of all the members. Therefore,
The higher the score, the higher the evaluation.

Production Example 1 75 parts of silicone elastomer spherical powder (Trefle E-505C, manufactured by Dow Corning Toray Silicone Co., Ltd.)
25 parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) is roughly mixed, and the mixture is scraped off so as not to adhere to the inner wall surface of the vessel.
(1,000 min ^-1 ) twice for 30 seconds to obtain a finely pulverized silicone elastomer spherical powder. Agglomerated particle size of the finely pulverized product was 2 to 2 based on observation with a scanning electron microscope.
The distribution was in the range of 60 μm.

Production Example 2 50 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Co., Ltd., Trefil E-506C),
50 parts of sericite is roughly mixed, and this is treated twice with a cutter mill (rotation speed: 11,000 min ^-1 ) for 30 seconds while scraping it so as not to adhere to the inner wall surface of the container, and then finely pulverized silicone elastomer spherical. A powder was obtained.
The aggregate particle size of the finely pulverized product was distributed in the range of 2 to 40 μm as observed by a scanning electron microscope.

Example 1 Using the finely pulverized silicone elastomer spherical powder obtained in Production Example 1, a powder foundation having the following formulation was prepared. (Component) (%) ------------------------------------------- ---------------------- (1) Silicone treated iron oxide 1.0 (2) Silicone treated yellow iron oxide 3.0 (3) Silicone treated black iron oxide 0.3 (4) Silicon-treated titanium oxide 10.0 (5) Silicon-treated talc 20.0 (6) Silicon-treated sericite residue (7) Nylon powder (true spherical, 4 μm) 2.0 (8) Fine grinding Silicone elastomer spherical powder (Production Example 1) 10.0 (9) Methylpolysiloxane 7.0 (10) Liquid paraffin 5.0 (11) Squalane 3.0 (12) Octyldodecanol 1.0 (13) 2-Ethylhexyl paramethoxycinnamate 2.0 (14) Preservatives Appropriate amount Total 100.0

(Process) The components (1) to (8) are mixed and stirred, and a mixture obtained by uniformly dissolving and mixing the components (9) to (14) is added thereto. The plate was formed by stamping.

Comparative Example 1 75 parts of silicone elastomer spherical powder (Trefle E-505C manufactured by Dow Corning Toray Silicone Co., Ltd.)
25 parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated at 1000 rpm in a Henschel mixer.
A mixed powder stirred at min ^-1 for 1 minute was obtained. This was used in place of the component (8) pulverized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. Operations other than changing the components were performed in the same manner as in Example 1.

Comparative Example 2 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Co., Ltd., Trefil E-505C),
25 parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated at 1000 rpm in a Henschel mixer.
The mixture was stirred at min ^-1 for 1 minute and then treated with a hammer mill to obtain a mixed powder. This was used in the same manner as in Comparative Example 1 in place of the component (8) micronized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. Operations other than changing the components were performed in the same manner as in Example 1.

Comparative Example 3 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Co., Ltd., Trefil E-505C),
25 parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated at 1000 rpm in a Henschel mixer.
The mixture was stirred at min ^-1 for 1 minute and then treated with a pin mill to obtain a mixed powder. In the same manner as in Comparative Example 1,
Component (8) in the formulation was used in place of the finely divided silicone elastomer spherical powder to obtain a powder foundation. Operations other than changing the components were performed in the same manner as in Example 1.

Comparative Example 4 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Co., Ltd., Trefil E-505C),
25 parts of platy silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was treated in an automatic mortar for 30 minutes to obtain a mixed powder. This was used in the same manner as in Comparative Example 1 in place of the component (8) micronized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. Operations other than changing the components were performed in the same manner as in Example 1.

Comparative Example 5 Silicone Elastomer Spherical Powder (Toray Dow Corning Silicone Co., Ltd., Trefil E-505C) 75 parts,
25 parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was treated with a ball mill for 30 minutes to obtain a mixed powder. This was used in the same manner as in Comparative Example 1 in place of the component (8) micronized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. Operations other than changing the components were performed in the same manner as in Example 1.

With respect to Example 1 and Comparative Examples 1 to 5, the cosmetics were observed for appearance (uniformity) and subjected to a sensory property evaluation test. The powder foundation evaluation results are shown.

[Results of Powder Foundation Evaluation] Appearance State Uniformity of Sensory Characteristic Evaluation (out of 50 points) Wrinkle Hiding Effect Makeup Feel ---------------------- ------------------------------------------- Example 1 Good uniformity 42 41 47 Comparative Example 1 Non-uniform, entire surface is degraded 10 11 10 Comparative Example 2 Non-uniform, entire surface is degraded 10 10 10 Comparative Example 3 Non-uniform, entire surface is degraded 10 10 10 Comparative Example 4 33 30 26 Comparative example 5 Non-uniform, remarkable surface irregularities 32 24 14

From the above test results, it was found that all of the examples of the present invention were superior to the comparative examples in each evaluation item.

Example 2 Oily Foundation (Component) (%) ----------------------------------- ----------------------------- (1) Paraffin wax 1.5 (2) Celesin 2.0 (3) Liquid paraffin 10 0.0 (4) Tri (caprylic / capric acid) glyceride 5.0 (5) Octyl oxystearate 31.5 (6) Bengala 0.5 (7) Yellow iron oxide 4.0 (8) Black iron oxide 1 (9) Titanium oxide 30.0 (10) Mica 5.4 (11) Finely pulverized silicone elastomer spherical powder (Production Example 2) 10.0 Total 100.0

(Process) The components (1) to (5) are dissolved by heating and mixed uniformly. A mixture obtained by stirring and mixing the components (6) to (11) was added to the mixture, and the mixture was kneaded by a roller mill so as to be uniform, and the mixture was filled into a metal plate and molded.

The oil-based foundation of Example 2 had a more powdery and crisp feel as compared with the oil-based foundation of Example 2 in which mica was used instead of the finely ground silicone elastomer spherical powder as a comparative example. In addition, sweating and oozing of the oil agent were small, and the oil agent had good oil-maintaining properties.

Example 3 Face Powder (Ingredient) (%) ----------------------------------- ------------------------------ (1) Bengala 0.1 (2) Yellow iron oxide 0.8 (3) Red No. 226 0.06 (4) Talc 70.94 (5) Finely pulverized silicone elastomer spherical powder (Production Example 2) 20.0 (6) Mica 5.0 (7) Zinc myristate 3.0 (8) Fragrance 0.1 Total 100.0

(Production method) The components (1) to (7) were mixed and stirred, the component (8) was added thereto, mixed, pulverized by a hammer mill, and sieved and filled in a container.

The face powder of Example 3 had a smooth feel and also had good sebum absorption when applied to the skin.

[0049]

As described above, the present invention provides
It is clear that a cosmetic excellent in wrinkle concealing effect, long-lasting makeup, sebum-adsorbing property, oil-absorbing-retaining property, and feel can be obtained.

Claims (2)

[Claims] An aggregate having a particle diameter obtained by finely pulverizing a high-order aggregate of silicone elastomer spherical powder having an average primary particle diameter of 1 to 15 μm using a dry pulverizer having a shearing mechanism. A cosmetic comprising a finely pulverized silicone elastomer spherical powder, which is in the range of 1 to 80 µm. 2. A mixture obtained by finely pulverizing a mixture of a high-order aggregate of silicone elastomer spherical powder having a size of 1 to 15 μm as an average primary particle diameter and a lubricant using a dry pulverizer having a shearing mechanism, A cosmetic comprising a finely pulverized silicone elastomer spherical powder, wherein the agglomerated particle size of the silicone elastomer spherical powder is in the range of 1 to 80 μm.