JP3442698B2 - Manufacturing method of cosmetics - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a cosmetic excellent in wrinkle-concealing effect, makeup retention, sebum adsorbability, oil agent absorption / retention, and touch. More specifically, higher order aggregates (and a mixture of lubricants) of silicone elastomer spherical powder having an average primary particle size of 1 to 15 μm in cosmetics are finely pulverized using a dry pulverizer having a shearing mechanism. It was obtained by dispersing the finely divided silicone elastomer spherical powder agglomerated particle size of the silicone elastomer spherical powder, characterized in that in the range of 1~80μm cosmetics
The present invention relates to a method for producing a cosmetic composition which is excellent in wrinkle-concealing effect, sebum-adsorbing property, oil-agent absorbing / holding property and feel by being incorporated therein.

[0002]

2. Description of the Related Art Silicone elastomer spherical powder was first developed as a material for paints in the United States and Europe around 1970. Then, in the cosmetics field, as described in JP-A-61-194009, it is a raw material having a long history of application in the late Showa period. However, this raw material has not been widely used for its history. The reason is that it is difficult to mix the powder with cosmetics. Therefore, we have studied the method of blending the silicone elastomer spherical powder into cosmetics. For example, Japanese Unexamined Patent Publication No. 7-2624 has developed a technique for modifying a silicone elastomer spherical powder by using a closed multi-stage shear shear extruder so that it can be easily blended into cosmetics, and Japanese Unexamined Patent Publication No. 9-30918. In Japanese Patent Laid-Open No. 9-71509 and Japanese Patent Laid-Open No. 9-71509, a method for treating the same powder using a wet crushing device was developed.

[0003]

However, the problem with these methods is that the production is time-consuming and the productivity is low or the cost is high.

[0004]

SUMMARY OF THE INVENTION In view of these problems, the present inventors have studied a modification method which is more productive and which can be easily incorporated into cosmetics. Silicone elastomer spherical powders generally have a higher-order aggregate structure in the shape of a tuft of grapes, and if they are not well dispersed in cosmetics, a complex aggregate of residue-like dust similar to that when using an eraser. Occurs when using cosmetics, and in powder foundations of press-type cosmetics, problems such as surface cracking at the time of stamping on a gold plate or after stamping occur. Therefore, these problems were addressed by shearing the silicone elastomer spherical powder using a relatively low-cost dry pulverizer so that the powder can be well dispersed in the cosmetic.
Further, by combining with a lubricant, the powder once sheared was prevented from re-adhering. These measures have enabled the development of superior cosmetics.

That is, according to the first aspect of the present invention, high-order aggregates of silicone elastomer spherical powder having an average primary particle size of 1 to 15 μm are finely pulverized using a dry pulverizer having a shearing mechanism. the resulting aggregated particle size of 1
To 80 μm finely divided silicone elastomer
-Characterized by compounding spherical powder into cosmetics
There is a method for manufacturing cosmetics .

The second aspect of the present invention has an average primary particle size of 1
Higher ordered aggregates of the silicone elastomer spherical powder having a size of ~15μm and a lubricant, silicone Elastica
Tomer spherical powder / lubricant = 99/1 to 25/75 mass ratio
The mixture mixed at the mixing ratio of
The finely pulverized silicone elastomer spherical powder obtained by finely pulverizing with a powder type pulverizer and having an aggregate particle diameter of the silicone elastomer spherical powder in the range of 1 to 80 μm
The method for producing cosmetics is characterized in that it is incorporated into the cosmetics.
It

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION As a silicone elastomer spherical powder having an average primary particle size of 1 to 15 μm used in the present invention, there is a Trefil E series sold by Toray Dow Corning Silicone. . Specifically, Trefil E-505C, Trefil E-506C, Trefil E-507, Trefil E-
508 and the like, which may or may not contain dimethylpolysiloxane in its skeleton. These powders are basically obtained by reacting methylhydrogenpolysiloxane with olefin-modified silicone at both ends under a platinum catalyst. Unless modified, these powders are rubber-like powders with high elasticity, and when observed with an electron microscope, spherical primary particles aggregate to form a higher-order aggregate in the shape of a grape tuft. You can observe the state of being. The aggregated particles are huge and often reach several hundred μm to several mm. Because this powder is highly elastic,
In a dry impact type crusher (such as a pin mill or a hammer mill) usually used in cosmetics, the impact force is absorbed and the crushing cannot be performed well. Since the particles themselves are very soft, when classifying with a mesh, static electricity is generated and the particles fly around, and at the same time, the particles coalesce with each other and fine powder cannot be obtained.

The crusher used in the present invention is a dry crusher such as a cutter mill, a turbo mill, an impeller mill, etc., and has a shearing mechanism, preferably a classifying mechanism, and preferably a rotary crushing mechanism part has a high speed. A high-speed rotary type crusher that rotates can be used. For example, the cutter mill is preferably a high-speed rotating type with a disc rotor rotating speed of 700 min ⁻¹ or more. Note that turbo mills and impeller mills may be classified as high-speed rotary impact grinders depending on the type of book, but the device has multiple rotors with multiple blades on the circumference, and the casing also has multiple grooves. The crusher has a mechanism having a liner, and is a pulverizer having a powder mechanism by an impact shearing force by an eddy current of air rather than giving an impact force like a hammer mill. Even when a stirring mixer such as a Henschel mixer is used, the blade is processed into a knife blade shape so that shearing force is applied, and it is controlled by an inverter or the like so as to be a high-speed rotation type (preferably a rotation speed of 3000 min ^-1 or more). It is possible to modify it for use as a dry crusher having a shearing mechanism for this purpose by changing to (). The crusher may be either vertical type or horizontal type.

The degree of fine pulverization referred to in the present invention is that the aggregate particle diameter of the silicone elastomer spherical powder is 1 to 80 μm.
It must be crushed to the range of m. 1 μm
If it is less than 1, the feel is deteriorated due to crushing of primary particles, 8
If it exceeds 0 μm, the agglomerates become huge, which may cause a gritty feel at the time of use, or may cause the feel of use to be rough, which is not preferable. In the present invention,
As a result of the fine 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 into single particles.
In addition, as a method of measuring the aggregated particle size, a small amount of sample (fine powder) is set on a sample stage of an electron microscope, and a shape obtained by a scanning electron microscope or a silicon atom mapping diagram of an X-ray microanalyzer is used. , The method of determining the size of aggregated particles, or roughly dispersing (or ultrasonically dispersing) the compounded product in water, scooping from below with a sample stand for electron microscope, and performing mapping analysis with an X-ray microanalyzer to aggregate Examples include a method of measuring the size of particles.

In the present invention, it is preferable to use a lubricant together with the silicone elastomer spherical powder when finely pulverizing. The lubricant may have a function of preventing adhesion between particles at the time of pulverizing the silicone elastomer spherical powder, for example, plate-like powder (talc, mica, sericite, kaolin,
Silicon nitride powders such as boron nitride, tabular barium sulfate, tabular silicic acid, tabular titanium oxide, N-lauroyl-L-lysine, metallic soap pigments, titanium mica), silicic anhydride, and polymethylsilsesquioxane , Spherical silica beads and the like are preferable, but talc, sericite, and silicic acid anhydride are particularly effective, which is preferable. The mixing ratio of the silicone elastomer spherical powder and a lubricant, Ru weight ratio der silicone elastomer spherical powder / lubricant = 99 / 1-25 / 75.

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

The content of the finely pulverized silicone elastomer spherical powder in the present invention in cosmetics is 0.1 to 50.0% (mass percentage, the same applies hereinafter) in the total cosmetic composition, preferably the silicone elastomer pure content. 1.0 as conversion
It is 15.0%. If the blending amount is small, it is not possible to obtain a smooth feel and optical properties suitable for the wrinkle-masking effect by the silicone elastomer spherical powder, and if the blending amount is increased, the absorbability of oils and sebum is improved, but powder foundation and the like With press-type cosmetics, the moldability and maintenance of the shape become significantly worse.

In the cosmetic of the present invention, in addition to the finely pulverized silicone elastomer spherical powder thus obtained, oil agents, powders (pigments, dyes, resins), fluorine compounds, resins and surfactants which are usually used in cosmetics. , Adhesives, preservatives, fragrances, ultraviolet absorbers (including organic type and inorganic type, which may correspond to either UV-A or B), humectants, salts, solvents, antioxidants, chelates It is preferable to appropriately mix various components such as an agent, a neutralizing agent, a pH adjusting agent, an insect repellent, and a physiologically active ingredient.

Examples of the powder include pigments such as Red No. 104, Red No. 201, Yellow No. 4, Blue No. 1, Black No. 401, lake pigments such as Yellow No. 4 Al lake, yellow No. 203 Ba lake, and nylon. Powder, silk powder, urethane powder, Teflon powder, silicone powder, polymethylmethacrylate powder, cellulose powder, polymers such as polyethylene powder, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, ultramarine blue,
Colored pigments such as navy blue, white pigments such as titanium oxide and cerium oxide, body pigments such as talc, mica, sericite, kaolin, and barium sulfate plate, pearl pigments such as titanium mica,
Examples thereof include 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, titanium oxide fine particles and zinc oxide fine particles. There is no particular limitation on the shape (spherical shape, spherical shape, rod shape, needle shape, plate shape, irregular shape, scaly shape, spindle shape, etc.), size, and crystal form of these powders. Further, 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 these, the surface-treated powder with a fluorine compound such as perfluoroalkyl phosphate or perfluoroalkylsilane is preferable because it has excellent sebum resistance.

Examples of the oil agent include volatile and non-volatile oil agents, solvents and resins usually used in cosmetics, and may be liquid, paste or solid at room temperature. Examples of oils include higher alcohols such as cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, octyldodecanol, etc., isostearic acid, undecylenic acid, fatty acids such as oleic acid, glycerin, sorbitol, ethylene glycol, 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. Etc., liquid paraffin, petroleum jelly, hydrocarbons such as squalane, lanolin, reduced lanolin, wax such as carnauba wax, 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 types of oil agents include, for example, dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl.
Polyoxyalkylene co-modified organopolysiloxane,
Silicone compounds such as alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicic acid, fluorine-modified silicone resin, and silicone RTV rubber, Fluorine compounds such as perfluoropolyether, fluorinated pitch, fluorocarbon and fluoroalcohol may be mentioned. Partially fluorinated or fully fluorinated oils have improved sebum resistance,
This is preferable because it has the advantage 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 CFC, 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, alkyl amide sulfate, alkyl phosphate, alkyl Amidophosphate, alkyloylalkyl taurine salt, N-acyl amino acid salt, sulfosuccinate,
Anionic surfactants such as perfluoroalkyl phosphates, alkyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, cetostearyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, bromide Cationic surfactant such as behenyltrimethylammonium, lauric acid alkanolamide, POE sorbitan fatty acid ester, POE glycerin fatty acid ester, POE fatty acid ester, nonionic surfactant such as polyether modified silicone, carboxybetaine type,
Amidobetaine type, sulfobetaine type, hydroxysulfobetaine type, amidosulfobetaine type, phosphobetaine type, aminocarboxylic acid salt type, imidazoline derivative type,
Examples include amidoamine type amphoteric surfactants. Further, natural surfactants such as saponin and sugar-based surfactants can also be used. The surfactant may be hydrophilic or lipophilic.

Examples of the tackifier and the resin include acrylic acid ester / methacrylic acid ester copolymer (plus size,
Kyodo Chemical Co., Ltd.), vinyl acetate / crotonic acid copolymer (Resin 28-1310, NSC Co.), 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), vinylpyrrolidone / vinyl acetate / vinyl propionate copolymer (Rubiscol VAP, manufactured by BASF), vinyl acetate / crotonic acid copolymer Coalescence (Rubiset CA, BASF
Co., Ltd.), vinyl acetate / crotonic acid / vinyl pyrrolidone copolymer (Rubiset CAP, manufactured by BASF), vinylpyrrolidone / 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) and other anionic polymer compounds, dialkylaminoethyl methacrylate polymer acetic acid amphoteric compounds (Yukaformer, manufactured by Mitsubishi Chemical Co.), octyl acrylamide acrylate / hydroxypropyl acrylate / butylaminoethyl methacrylate Amphoteric polymer compounds such as polymers (AMPHOMER, NSC), quaternary vinylpyrrolidone / dimethylaminoethyl methacrylate (GAFQUAT, ISP),
Cationic polymer compounds such as methylvinylimidazolium chloride / vinylpyrrolidone copolymer (Rubicoat, manufactured by BASF), polyvinylpyrrolidone (Rubiscor K, manufactured by BASF), vinylpyrrolidone / vinyl acetate copolymer (Rubiscol) VA, manufactured by BASF), vinylpyrrolidone / dimethylaminoethylmethacrylate copolymer (copolymer 937, manufactured by ISP), vinylcaprolactam / vinylpyrrolidone / dimethylaminoethylmethacrylate copolymer (copolymer VC713, ISP).
Manufactured by the company) and the like. In addition, cellulose or its derivative, keratin and collagen or its derivative, 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-derived polymer compounds such as galactan, karaya gum, tragacanth gum, alginic acid, albumin, casein, curdlan, gellan gum and dextran can also be preferably 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, moisturizers, blood circulation promoters, antibacterial agents, bactericides, drying agents, cooling agents, warming agents. ,
Vitamins, amino acids, wound healing promoters, stimulants,
An analgesic, a cell activator, an enzyme component, a skin coloring agent and the like can be mentioned. Among these, natural plant extract components, seaweed extract components, and crude drug components are particularly preferable. In the present invention, it is preferable to blend one or more of these physiologically active ingredients.

Examples of these components include, for example, ashitaba extract, avocado extract, armature extract, altea extract, arnica extract, aloe extract, apricot extract, apricot kernel extract, ginkgo biloba extract, fennel extract, turmeric extract, oolong tea extract, agets. Extract, Chinese cabbage leaf extract, sardine extract, psyllium extract, scutellaria extract, barley extract, St. John's wort extract, sardine extract, Dutch mustard extract, orange extract, seawater dried product, seaweed extract, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk , Chamomile extract, carrot extract, wormwood extract, licorice extract, karkade extract, oyster 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 fermented extract, rice germ oil, comfrey extract, collagen,
Bilberry extract, Cycin extract, Psycho extract, Cai Tai extract, Salvia extract, Sorbour extract, Sasa extract, Hawthorn extract, Hawthorn extract, Shiitake extract, Dio extract, Sikon extract, Perilla extract, Shinanoki extract, Shimotsukisou extract, Peony extract, Shobu root extract , Birch extract, horsetail extract, Ivy extract, Hawthorn extract,
Sambucus nigra extract, yarrow extract, mint extract, sage extract, mallow extract, senkyu extract, senburi extract, soybean extract, turmeric extract, thyme extract, tea extract, clove extract, chigaya extract, chinpi extract, touki extract, daffodil extract, tounin extract. , Spruce extract, Dokudami extract, Tomato extract, Natto extract, Carrot extract, Garlic extract, Novara extract, Hibiscus extract, Bakumondou extract, Parsley extract, Honey, Hamamelis extract, Parietaria extract, Hikiokoshi extract, Bisabolol, Loquat extract, Fukitampo extract , Fukinotou extract, butterbur 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 thereof include apple extract, lettuce extract, lemon extract, lotus root extract, rose extract, rosemary extract, Roman chamomile extract, royal jelly extract and the like.

Deoxyribonucleic acid, mucopolysaccharide, sodium hyaluronate, sodium chondroitin sulfate, collagen, elastin, chitin, chitosan, biopolymer such as hydrolyzed eggshell membrane, amino acid, sarcosine,
Amino acid derivatives such as N-methyl-L-serine, moisturizing ingredients such as sodium lactate, urea, sodium pyrrolidonecarboxylate, betaine, whey, raffinose, sphingolipids, ceramides, cholesterol, cholesterol derivatives, phospholipids and other oily ingredients, ε -Aminocaproic acid,
Anti-inflammatory agents such as glycyrrhizinic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, hydrocortisone, vitamins A, B ₂ , B ₆ , C, D, E, calcium pantothenate, biotin, nicotinamide, vitamin C
Vitamin such as ester, active ingredient such as allantoin, diisopropylamine dichloroacetic acid, 4-aminomethylcyclohexanecarboxylic acid, antioxidant such as tocopherol, carotenoid, flavonoid, tannin, lignan, saponin, α-hydroxy acid, β-hydroxy Cell activating agents such as acids, γ-oryzanol, blood circulation promoting agents such as vitamin E derivatives, wound healing agents such as retinol and 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 derivative, camphor,
Salicylic acid, 1-menthol, γ-aminobutyric acid and the like can be mentioned. Among these, it is particularly preferable to mix and combine with a component having an anti-inflammatory action, a moisturizing effect, or an antioxidant action.

Examples of organic ultraviolet absorbers include 2-ethylhexyl paramethoxycinnamate, 2-hydroxy-4-methoxybenzophenone, and 2-hydroxy-4-.
Methoxybenzophenone-5-sulfuric acid, 2,2'-dihydroxy-4-methoxybenzophenone, p-methoxyhydrocinnamic acid diethanolamine salt, para-aminobenzoic acid (hereinafter abbreviated as PABA), ethyldihydroxypropyl PABA, glyceryl PABA, homomentyl 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-hi Proxy -4-N-octoxybenzophenone, 4-isopropyl dibenzoylmethane, butyl methoxydibenzoylmethane, 4- (3,4
-Dimethoxyphenylmethylene) -2,5-dioxo-
1-imidazolidine 2-ethylhexyl propionate,
Examples include octyltriazone, polymer derivatives thereof, silane derivatives and the like. Among these organic UV absorbers, 2-ethylhexyl paramethoxycinnamate,
4-tert-butyl-4′-methoxydibenzoylmethane is particularly preferably used.

It is also possible to use a polymer powder in which the organic ultraviolet absorber is sealed. 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 polymer include acrylic resin, methacrylic resin, styrene resin, urethane resin, polyethylene, polypropylene, polyethylene terephthalate, silicone resin, nylon and acrylamide resin.
0.1 to 30% of the powder mass in these polymer powders
The powder in which the organic UV absorber is incorporated in the range of 4 is preferable, and especially 4-tert-butyl- which is a UVA absorber.
It is preferable to incorporate 4'-methoxydibenzoylmethane.

The UV protection component is preferably used together with the finely ground silicone elastomer spherical powder of the present invention, regardless of whether it is organic or inorganic. In general, the UV protection component gives a less favorable effect on the feeling, but a more preferable feeling can be obtained by combining it with the finely pulverized silicone elastomer spherical powder of the present invention. The blending amount of the organic ultraviolet absorber is preferably 0.1 to 10%, more preferably 1 to 10% with respect to the mass of the cosmetic.

The cosmetics of the present invention include, for example, emulsions, creams, lotions, calamine lotions, sunscreens, tanning agents, aftershave lotions, preshave lotions, packs, cleansing agents, face washes, acne-preventing cosmetics, essences and the like. Basic cosmetics,
Makeup cosmetics such as foundation, white powder, eye shadow, eye liner, eyebrow, cheek, lipstick, nail color, shampoo, conditioner, hair color, hair tonic, setting agent, body powder, deodorant, depilator, soap, Body shampoos, bath salts, hand soaps, perfumes and the like can be mentioned, but they are particularly suitable for foundations and lipsticks.

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

[0029]

The present invention will be described in detail below 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.

Sensory property evaluation Ten expert panelists evaluated the sensory property of the prototype. Regarding each sensory characteristic, +5 points when excellent,
The case of inferiority was set as 1 point, and the evaluation was performed on a total of 5 points during that period, and the evaluation result was obtained by summing the scores of all members. Therefore,
The higher the score, the higher the evaluation.

Production Example 1 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Trefil E-505C),
25 parts of plate-like silicic acid anhydride (Sun Lovely C, manufactured by Dokai Chemical Industry Co., Ltd.) was roughly mixed, and a cutter mill (rotation speed: 1
It was treated twice at 1,000 min ^-1 ) for 30 seconds to obtain a finely pulverized silicone elastomer spherical powder. The agglomerated particle size of the finely pulverized product is 2 to 10 as observed with a scanning electron microscope.
It was distributed in the range of 60 μm.

Production Example 2 50 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Trefil E-506C),
50 parts of sericite is roughly mixed, and while being scraped off so that it does not adhere to the inner wall surface of the vessel, it is treated twice with a cutter mill (rotation speed: 11,000 min ^-1 ) for 30 seconds, and finely pulverized silicone elastomer spherical A powder was obtained.
The agglomerated particle size of the finely pulverized product was distributed in the range of 2 to 40 μm by observation with 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 red iron oxide 1.0 (2) Silicone-treated yellow iron oxide 3.0 (3) Silicone-treated black iron oxide 0.3 (4) Silicone-treated titanium oxide 10.0 (5) Silicone-treated talc 20.0 (6) Silicone-treated sericite Residual amount (7) Nylon powder (spherical, 4 μm) 2.0 (8) Fine pulverization Silicone elastomer spherical powder (Production Example 1) 10.0 (9) Methyl polysiloxane 7.0 (10) Liquid paraffin 5.0 (11) Squalane 3.0 (12) Octyldodecanol 1.0 (13) 2-Ethylhexyl para-methoxycinnamate 2.0 (14) Preservative Suitable amount Total 100.0

(Manufacturing method) Components (1) to (8) are mixed and stirred, to which a mixture of (9) to (14) dissolved and mixed is added. It was stamped on a plate.

Comparative Example 1 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Trefil E-505C),
Twenty-five parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated in a Henschel mixer at a rotation speed of 1000.
A mixed powder was obtained which was stirred for 1 minute at min ⁻¹ . This was used in place of the component (8) finely pulverized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. The procedure was the same as in Example 1 except that the ingredients were changed.

Comparative Example 2 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Trefil E-505C)
Twenty-five parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated in a Henschel mixer at a rotation speed of 1000.
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 instead of the component (8) finely pulverized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. The procedure was the same as in Example 1 except that the ingredients were changed.

Comparative Example 3 75 parts of silicone elastomer spherical powder (Torefil E-505C manufactured by Toray Dow Corning Silicone Co., Ltd.),
Twenty-five parts of plate-shaped silicic acid anhydride (Sun Lovely C manufactured by Dokai Chemical Industry Co., Ltd.) was rotated in a Henschel mixer at a rotation speed of 1000.
The mixture was stirred at min ^-1 for 1 minute and then treated with a pin mill to obtain a mixed powder. This is the same as Example 1 in Comparative Example 1.
Component (8) in the formulation was used in place of the finely ground silicone elastomer spherical powder to obtain a powder foundation. The procedure was the same as in Example 1 except that the ingredients were changed.

Comparative Example 4 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone trefil E-505C),
Twenty-five parts of plate 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 instead of the component (8) finely pulverized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. The procedure was the same as in Example 1 except that the ingredients were changed.

Comparative Example 5 75 parts of silicone elastomer spherical powder (Toray Dow Corning Silicone Trefil E-505C),
Twenty-five parts of plate 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 instead of the component (8) finely pulverized silicone elastomer spherical powder in the formulation of Example 1 to obtain a powder foundation. The procedure was the same as in Example 1 except that the ingredients were changed.

For Example 1 and Comparative Examples 1 to 5, the appearance state (uniformity) of the cosmetics was observed and the sensory characteristic evaluation test was conducted. The powder foundation evaluation result is shown.

[0041] [Powder foundation evaluation results]             Appearance condition Sensory characteristic evaluation (50 points maximum)             Uniformity Wrinkle hiding effect Makeup lasting feel -------------------------------------------------- --------------- Example 1 Good uniformity 42 41 47 Comparative Example 1 Non-uniformity, collapsed on the entire surface 10 11 10 Comparative Example 2 Non-uniformity, the entire surface is collapsed 10 10 10 Comparative Example 3 Non-uniformity, the entire surface is collapsed 10 10 10 Comparative Example 4 Non-uniformity, surface unevenness is remarkable 33 30 26 Comparative Example 5 Non-uniformity and remarkable surface irregularity 32 24 14

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

[0043] Example 2 Oily foundation     (Component) (%) -------------------------------------------------- -------------- (1) Paraffin wax 1.5 (2) Ceresin 2.0 (3) Liquid paraffin 10.0 (4) Tri (caprylic / capric acid) glyceride 5.0 (5) Octyl oxystearate 31.5 (6) Red iron oxide 0.5 (7) Yellow iron oxide 4.0 (8) Black iron oxide 0.1 (9) Titanium oxide 30.0 (10) Mica 5.4 (11) Finely ground silicone elastomer spherical powder (Production Example 2) 10.0     Total 100.0

(Manufacturing method) Components (1) to (5) are heated and dissolved, and uniformly mixed. A mixture obtained by stirring and mixing the components (6) to (11) was added thereto, and the mixture was kneaded in a roller mill so as to be uniform, and the mixture was molded into a metal plate.

The oily foundation of Example 2 had a more powdery and refreshing feel as compared with the one using mica instead of the finely ground silicone elastomer spherical powder in Example 2 as a comparative example. Further, it had little perspiration and oozing of the oil agent, and had good oil agent maintenance characteristics.

[0046] Example 3 Face powder     (Component) (%) -------------------------------------------------- --------------- (1) Bengal 0.1 (2) Yellow iron oxide 0.8 (3) Red No. 226 0.06 (4) Talc 70.94 (5) Finely ground silicone elastomer spherical powder (Production Example 2) 20.0 (6) Mica 5.0 (7) Zinc myristate 3.0 (8) Perfume 0.1     Total 100.0

(Manufacturing Method) Components (1) to (7) were mixed and stirred, and component (8) was added thereto, mixed, pulverized with a hammer mill, sieved, and then filled in a container.

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

[0049]

As described above, according to the manufacturing method of the present invention .
It, wrinkle hiding effect, makeup, sebum-adsorbing, oil absorbing retention, it is clear that the good cosmetic feel is obtained.

Continuation of the front page (56) Reference JP-A-9-71509 (JP, A) JP-A-9-175940 (JP, A) JP-A-8-319215 (JP, A) JP-A-8-310915 (JP , A) JP-A-7-258028 (JP, A) JP-A-7-258026 (JP, A) JP-A-10-167925 (JP, A) JP-A-61-194009 (JP, A) A. Otsuka, Powder Particle Design and Adhesive Cohesiveness, Particle Design and Lumbering Technology, Japan, Japan Pharma Co., Ltd., October 30, 1993, p. 1-6 Kyosuke Tsuda and Hisashi Nogami, Basic Drug Development Course X Pharmaceutical Engineering, Japan, Jijijin Shokan Co., Ltd., March 1, 1971, p. 28-32 (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (2)

(57) [Claims] 1. A obtained by milling using a dry grinding machine having a shearing mechanism higher order aggregates of the silicone elastomer spherical powder having a size of 1~15μm average primary particle size, agglomeration particle size fine but it is in the range of 1~80μm
Apply pulverized silicone elastomer spherical powder to cosmetics
A method for producing a cosmetic, comprising blending . 2. A higher-order aggregates of the silicone elastomer spherical powder having a size of 1~15μm average primary particle diameter and a lubricant, silicone elastomer spherical powder
/ Lubricant = mixed in a mass ratio of 99/1 to 25/75
Combine the combined mixture with a dry mill with a shearing mechanism.
Obtained by milling Te, pulverized aggregate particle size of the silicone elastomer spherical powder is in the range of 1~80μm Shi
Incorporation of spherical silicone elastomer powder in cosmetics
A method for producing a cosmetic, comprising: