JP2010235513A - Powdered solid cosmetic and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide powdered solid cosmetics that are smoothly applied and excellent in preventing twist and shininess and last long. <P>SOLUTION: The powdered solid cosmetics are characterized in containing a powder component, an oily component as a binder and a swellable organic-modified clay mineral as a gelling agent. The powdered solid cosmetics preferably contain 0.1-10.0 mass% of the swellable organic-modified clay mineral. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a powdered solid cosmetic and a method for producing the same, and more particularly to an improvement in the longevity of powdered solid cosmetics against the roughness and distortion.

  Powdered solid cosmetics typified by powder foundations have been conventionally used as oil components as binders and binders by using agitation mixers such as Henschel mixer (registered trademark), Nauter mixer (registered trademark), ribbon blender, and kneader. Components were mixed, and the mixture was pulverized with a pulverizer such as a pulverizer, and then filled in a metal or resin inner dish, or further dry press molded. These conventional methods are in the form of dry mixing in which the powder component and a small amount of oily component as a binder are mixed without adding a solvent, and dry molding in which pressure molding is performed in a dry powder state. It is called the dry process and has been used for a long time.

In recent years, various methods relating to mixing and molding have been developed to improve properties such as usability for powdered solid cosmetics. For example, wet mixing is performed in which a powder component and an oil component are added to a volatile solvent to form a slurry, and then filled into a container in a slurry state and the solvent is removed by vacuum suction or the like to form a powder (wet molding) Such a method for producing a powdered solid cosmetic has been proposed and is called a wet production method.
In addition, various devices used in wet mixing in which a powder component and oil are mixed in a volatile solvent have been widely studied. For example, after obtaining a pulverized solution obtained by pulverizing a polymer powder in a volatile solvent using a medium stirring mill, the pulverized solution and a powder such as pigment are mixed in a wet mixer such as a disper to obtain a slurry. A volatile solvent is removed from the resulting slurry to obtain a dry powder, which is further pulverized by a pulverizer, followed by dry molding to produce a solid powdered solid cosmetic (Patent Document 1), or wet mixing. In this case, a medium stirring mill is used. After the obtained slurry is filled in the container, wet molding is performed by suction pressing, or the solvent is removed from the obtained slurry to obtain a dry powder, and the dry powder is further pulverized by a pulverizer, followed by dry molding. The manufacturing method (patent document 2) etc. of the powder solid cosmetics obtained by performing is proposed.

  In addition, with the diversification and sophistication of recent user needs, not only satisfaction such as ease of use on puffs and use feeling when applied to the skin, but also productivity and work environment. After further improvement in terms of surface area, a method for producing powdered solid cosmetics (W & D production method) was proposed in which a bead mill was used to highly disperse in a wet system, followed by dry micronization with a flash dryer. (Patent Document 3).

On the other hand, when a swellable organically modified clay mineral is blended with a cosmetic powder and an oily component containing silicone oil or the like, a powder that is superior in feeling of use and finish without causing a cosmetic break-up such as shine or twist over time. Solid cosmetics (Patent Documents 4 and 5) are provided. However, since the above powdered solid cosmetics contain a large amount of silicone oil and are manufactured using a conventional wet method, the powdery texture, creaking, poor adhesion to the skin, and roughness occur. There was a problem such as.
Also, a method for improving the longevity of cosmetics by blending active zinc white and pyridoxine and / or pyridoxine derivatives into makeup, and blending active zinc white and organopolysiloxane elastomer spherical powder into makeup (Patent Document 6). ) Has already been provided. However, with the above-mentioned means, the cosmetic durability can be improved to some extent, but active zinc white acts only on fatty acids which are a small part of sebum components and gels triglycerides, etc., the main component of sebum. Does not have the effect of

Japanese Patent Laid-Open No. 9-30926 Japanese Patent No. 3608778 JP 2007-55990 A JP-A-1-143815 JP 2002-220316 A JP-A-62-56415

  The present invention has been made in view of the above-described prior art, and the problem to be solved is to provide a powder solid cosmetic with a good makeup that has no roughness and is excellent in preventing dripping and shining.

In order to achieve the above object, the present inventors have conducted intensive studies, and as a result, a swellable organically modified clay mineral is added during the wet high dispersion process to obtain a dry powder, compared with products manufactured by the conventional method. The present inventors have found that a powder solid cosmetic having a good makeup and excellent in anti-smoothness and shine prevention effects can be obtained.
That is, the powder solid cosmetic of the present invention is characterized by containing a powder component, an oily component as a binder, and a swellable organically modified clay mineral as a gelling agent.

  Moreover, in the said powder solid cosmetics, it is suitable to contain 0.1-10.0 mass% of swelling organic modified clay minerals.

  In the powdered solid cosmetic, it is preferable that the swellable organically modified clay mineral is organically modified hectorite and / or organically modified bentonite.

  In the powdered solid cosmetic, it is preferable that the silicone oil is contained in an amount of 0.5 to 20% by mass, and the ratio of the amount of the silicone oil to the amount of the oily component is 0.5 or less.

  In the powder solid cosmetic, it is preferable to contain 1 to 20% by mass of polymethacrylate resin powder.

  In the powdered solid cosmetic, a powder component, an oily component as a binder, and a swellable organically modified clay mineral as a gelling agent are mixed in a volatile solvent to form a slurry, and the slurry is dried using a drying apparatus. The dried apparatus contains a dried powder, and the drying apparatus is a drying apparatus for drying the slurry by making the slurry into fine droplets by mechanical shearing force and blowing a dry gas into the fine droplets. It is characterized by.

  The method for producing a powdered solid cosmetic of the present invention comprises a slurry preparation step in which a powder component, an oily component as a binder, and a swellable organically modified clay mineral as a gelling agent are mixed in a volatile solvent to form a slurry, A drying step of drying the slurry to obtain a dry powder; and a method for producing a powdered solid cosmetic, characterized in that the slurry is obtained from the dry powder. The drying apparatus is characterized in that the slurry is formed into fine droplets by a mechanical shearing force and the slurry is dried by blowing a dry gas into the fine droplets.

  Further, in the method for producing a powdered solid cosmetic according to the present invention, the drying apparatus used in the drying step is configured to form a fine droplet by shearing the slurry with a hollow casing and a shearing member provided in the casing. Shearing means, supply means for supplying slurry to the shearing member in the casing, and drying gas is blown into the casing, and the drying gas is supplied to and contacted with the slurry formed into fine droplets by the shearing means. It is preferable that the drying apparatus includes a blowing unit and a collecting unit that collects a dry powder generated by drying the slurry.

  Further, in the method for producing a powdered solid cosmetic according to the present invention, in the slurry preparation step, using a medium stirring mill, the powder component and the oily component are mixed in a volatile solvent, and the powder component is crushed and It is preferable to obtain a slurry by pulverizing and / or dispersing.

  According to the method for producing a powdered solid cosmetic according to the present invention, since a swellable organically modified clay mineral as a gelling agent is added and mixed in the slurry adjustment step, it has no roughness, is excellent in preventing drooling, shine, and the like. It was possible to obtain a powdered solid cosmetic having a good makeup.

It is a schematic block diagram of the apparatus used with the manufacturing method concerning embodiment of this invention. It is the figure which showed an example of the medium stirring mill. It is the figure which showed an example of the medium stirring mill. It is the figure which showed the maximum particle size of the cosmetics obtained by the manufacturing method of this invention, and the powder solid cosmetics obtained by the conventional manufacturing method.

  Hereinafter, preferred embodiments according to the present invention will be described.

Powder Component The powder component used in the present invention is not particularly limited as long as it can be generally used. For example, talc, kaolin, sericite (sericite), muscovite, phlogopite, synthetic mica, sauroite, biotite, calcined talc, calcined sericite, calcined muscovite, calcined phlogopite, permiculite, magnesium carbonate, calcium carbonate , Aluminum silicate, Barium silicate, Calcium silicate, Magnesium silicate, Strontium silicate, Tungsten metal salt, Magnesium, Silica, Zeolite, Barium sulfate, Calcinated calcium sulfate (baked gypsum), Calcium phosphate, Fluorine apatite, Hydroxyapatite , Ceramic powder, metal soap (eg, zinc myristate, calcium palmitate, aluminum stearate, etc.), boron nitride, photochromic titanium oxide (titanium dioxide sintered with iron oxide), reduced zinc white; organic powder (eg, , Silico Elastomer powder, silicone powder, silicone resin-coated silicone elastomer powder, polyamide resin powder (nylon powder), polyethylene powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, Inorganic white pigments (eg, titanium dioxide, zinc oxide, etc.); Inorganic red pigments (eg, iron oxide (Bengara), iron titanate, etc.); Inorganic brown pigments (eg, γ-iron oxide, etc.) ); Inorganic yellow pigments (for example, yellow iron oxide, loess); inorganic black pigments (for example, black iron oxide, low-order titanium oxide); inorganic purple pigments (for example, mango violet, cobalt violet); Inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments Pearl pigment (eg, bismuth oxychloride, fish scale foil, titanium mica, iron oxide-coated mica titanium, low-order titanium oxide-coated mica titanium, titanium mica having photochromic properties, talc instead of mica as a substrate) Glass, synthetic fluorine phlogopite, silica, bismuth oxychloride, etc. In addition to titanium oxide as coating, low-order titanium oxide, colored titanium oxide, iron oxide, alumina, silica, zirconia, zinc oxide, oxidation Cobalt, aluminum, and the like, functional pearl pigments coated with resin particles on the pearl pigment surface (JP-A-11-92688), and coated with aluminum hydroxide particles on the pearl pigment surface (JP-A 2002-2002) 146238), the surface of pearl pigment coated with zinc oxide particles (Japanese Patent Laid-Open No. 2003-261) 421), pearl pigment surface coated with barium sulfate particles (Japanese Patent Laid-Open No. 2003-61229), etc .; metal powder pigments (eg, aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (eg, Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Organic pigments such as blue 404, red 3, red 104, red 106, red 227, red 230, red 401, red 505, orange 205, yellow 4, yellow 5, yellow 202 No., yellow No. 203, green No. 3, blue No. 1, etc.); natural pigments (for example, chlorophyll, β-carotene, etc.)

Oily component The oily component used in the present invention is not particularly limited as long as it can be generally used. Specific examples include silicone oils, liquid fats and oils, solid fats and oils, silicone oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, and the like.

  Examples of the silicone oil include chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane, and cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Examples thereof include various modified polysiloxanes such as silicone resins, silicone rubbers, amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes that form a three-dimensional network structure. One or two or more of these silicone oils may be used in combination.

  In this invention, it is preferable that the compounding quantity of the said silicone oil is 0.5-20 mass%. More preferably, it is 1-10 mass%. If it is less than 0.5% by mass, a stable powdered solid cosmetic may not be obtained. In addition, a good feeling of use may not be obtained. Moreover, even if it exceeds 20 mass%, a favorable usability may not be obtained.

  Moreover, it is preferable that the ratio of the compounding quantity of the said silicone oil with respect to the compounding quantity of oil-based component whole quantity (except an ultraviolet absorber) is 0.5 or less. When it is larger than 0.5, the feeling of use of the powdered solid cosmetic is deteriorated, the finish becomes powdery, and a natural finish may not be obtained.

Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern castor oil, castor oil, linseed oil , Safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin and the like.
Examples of the solid fat include cacao butter, palm oil, horse fat, hydrogenated palm oil, palm oil, beef tallow, sheep fat, hydrogenated beef tallow, palm kernel oil, pork fat, beef bone fat, owl kernel oil, hydrogenated oil, cattle Leg fats, moles, hydrogenated castor oil and the like.

Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nuka wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugar cane wax, lanolin fatty acid isopropyl, hexyl laurate, and reduced lanolin. Jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, and the like.
Examples of the hydrocarbon oil include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, and the like.
Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, toluic acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid ( DHA) and the like.

Examples of higher alcohols include linear alcohols (eg, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol); branched chain alcohols (eg, monostearyl glycerin ether (batyl alcohol) ), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyl decanol, isostearyl alcohol, octyldodecanol and the like.
Synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, myristyl lactate Lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, apple Acid diisostearyl, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, Trimethylolpropane phosphate, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, glycerin trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L -Glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyl myristate Sill, palmitic acid 2-hexyl decyl, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

Swellable organically modified clay mineral The swellable organically modified clay mineral used in the present invention is a kind of colloidal hydrous aluminum silicate having a three-layer structure, and is represented by the following general formula (1). A mineral is modified with a quaternary ammonium salt type cationic surfactant.
(X, Y) _2-3 (Si, Al) ₄ O ₁₀ (OH) ₂ Z _1/3 · nH ₂ O (1)

  (However, X = Al, Fe (III), Mn (III), Cr (III), Y = Mg, Fe (II), Ni, Zn, Li, Z = K, Na, Ca)

  Specifically, natural or synthetic montmorillonite group such as montmorillonite, saponite, hectorite (in which the (OH) group in the formula is substituted with fluorine) (in the commercial product, bee gum, kunipia, laponite) Quaternary ammonium salt form of clay minerals such as sodium silicic mica and synthetic mica known as sodium or lithium teniolite (commercially available is Dimonite: Topy Industries, Ltd.) Obtained by treatment with a cationic surfactant.

（式中、Ｒ_１は炭素数１０〜２２のアルキル基またはベンジル基、Ｒ_２はメチル基または炭素数１０〜２２のアルキル基、Ｒ_３またはＲ_４炭素数１〜３のアルキル基またはヒドロキシアルキル基、Ｘはハロゲン原子またはメチルサルフェート残基を表す。） The quaternary ammonium salt type cationic surfactant used here is represented by the following general formula (1).
(Formula 1)

(In the formula, R ₁ is an alkyl group or benzyl group having 10 to 22 carbon atoms, R ₂ is a methyl group or an alkyl group having 10 to 22 carbon atoms, R ₃ or R _{4 is} an alkyl group having 1 to 3 carbon atoms or hydroxyalkyl. Group X represents a halogen atom or a methyl sulfate residue.)

  Examples of such quaternary ammonium salt type cationic surfactants include dodecyltrimethylethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, aralkyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyltrimethylammonium chloride. Chloride, cetyldimethylethylammonium chloride, stearyldimethylethylammonium chloride, aralkyldimethylethylammonium chloride, behenyldimethylethylammonium chloride, myristyldimethylethylammonium chloride, aralkyldiethylethylammonium chloride, behenyldiethylethylammonium chloride, myristic Diethylethylammonium chloride, benzyldimethylmyristylammonium chloride, benzyldimethylcetylammonium chloride, benzyldimethylmethylammonium chloride, benzyldimethylbehenylammonium chloride, benzylmethylethylstearylammonium chloride, dibehenyldihydroxyethylammonium chloride, and the corresponding bromide, etc. Includes dipalmitylpropylethylammonium methyl sulfate. In carrying out the present invention, one or more of these are arbitrarily selected.

Representative examples of swellable organically modified clay minerals include dimethylalkylammonium hectorite, benzyldimethylstearylammonium hectorite, distearyldimethylammonium chloride-treated aluminum magnesium silicate, especially quaternary ammonium salt type cations. Hectorite modified with a surfactant or bentonite modified with a quaternary ammonium salt type cationic surfactant is preferable. Commercially available products include Benton 27 (benzyldimethylstearyl ammonium chloride-treated hectorite: National Red), Benton 38 (distearyldimethylammonium chloride-treated hectorite: National Red), TIXOGEL.
MP100 (manufactured by Rockwood Specialties Group) is preferred.

  These swellable organically modified clay minerals are contained in an amount of 0.1 to 10.0% by mass, more preferably 1.0 to 5.0% by mass, based on the total amount of the powdered solid cosmetic.

Other components In the powder solid cosmetic according to the present invention, other components such as esters, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionics are included within the range not impairing the effects of the present invention. Surfactant, moisturizer, water-soluble polymer, thickener, film agent, UV absorber, sequestering agent, lower alcohol, polyhydric alcohol, sugar, amino acid, organic amine, polymer emulsion, pH adjuster, Skin nutrients, vitamins, antioxidants, antioxidant auxiliaries, fragrances, water and the like can be appropriately blended as necessary, and can be produced by conventional methods according to the intended dosage form. Specific ingredients that can be blended are listed below, but a powder solid cosmetic can be prepared by blending the above essential blending ingredients and any one or more of the following ingredients.

  Anionic surfactants include, for example, fatty acid soaps (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (eg, POE-lauryl sulfate triethanolamine, POE-sodium lauryl sulfate, etc.); N-acyl sarcosine acid (eg, sodium lauroyl sarcosine, etc.); higher fatty acid amide sulfonates (eg, sodium N-myristoyl-N-methyl taurate, palm Oil fatty acid methyl tauride sodium, lauryl methyl tauride sodium, etc .; phosphate ester salt (POE-oleyl ether sodium phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinate (example) For example, sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc .; alkyl benzene sulfonates (eg, sodium linear dodecyl benzene sulfonate, linear dodecyl benzene sulfone) Acid triethanolamine, linear dodecylbenzene sulfonic acid, etc.); higher fatty acid ester sulfates (for example, hydrogenated coconut oil fatty acid sodium glycerin sulfate, etc.); N-acyl glutamate (for example, monosodium N-lauroyl glutamate, N-stearoyl) Disodium glutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oil (eg funnel oil); POE POE-alkylallyl ether carboxylates; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfates; higher fatty acid alkylolamide sulfates; lauroyl monoethanolamide succinic acid Sodium; N-palmitoyl aspartate ditriethanolamine; sodium caseinate and the like.

  Examples of the cationic surfactant include alkyltrimethylammonium salts (eg, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (eg, cetylpyridinium chloride, etc.); distearyldimethylammonium dialkyldimethylammonium chloride; Poly (N, N′-dimethyl-3,5-methylenepiperidinium chloride); alkyl quaternary ammonium salt; alkyldimethylbenzylammonium salt; alkylisoquinolinium salt; dialkyl morpholinium salt; POE-alkylamine; Examples include alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride and the like.

  Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (eg, 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide). Side-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (for example, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine) , Sulfobetaine, etc.).

  Examples of the lipophilic nonionic surfactant include sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, Sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexyl); glycerin polyglycerin fatty acids (for example, mono-cotton oil fatty acid glycerin, mono-erucic acid glycerin, sesquioleate glycerin, monostearin) Glycerin acid, α, α′-oleic acid pyroglutamate glycerin, monostearate glycerin malate, etc.); propylene glycol fatty acid esters (eg, Propylene glycol stearate); hydrogenated castor oil derivatives; glycerol alkyl ethers, and the like.

  Examples of the hydrophilic nonionic surfactant include POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate). POE-sorbite fatty acid esters (eg, POE-sorbite monolaurate, POE-sorbite monooleate, POE-sorbite pentaoleate, POE-sorbite monostearate, etc.); POE-glycerin fatty acid esters (eg, POE) -POE-monooleate such as glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triisostearate); POE-fatty acid esters (for example, POE-distearate, OE-monodiolate, ethylene glycol distearate, etc.); POE-alkyl ethers (for example, POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-core) Stanol ether, etc.); Pluronic type (for example, Pluronic, etc.); POE • POP-alkyl ethers (for example, POE • POP-cetyl ether, POE • POP-2-decyltetradecyl ether, POE • POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerin ether, etc.); Tetra POE / tetra-POP-ethylenediamine condensates (eg, Tetronic, etc.); POE-castor oil hardened castor oil derivative (For example, POE-castor oil, POE-hardened castor oil, POE-hardened castor oil monoisostearate, POE-hardened castor oil triisostearate, POE-hardened castor oil monopyroglutamic acid monoisostearic acid diester, POE-hardened Castor oil maleic acid, etc.); POE-beeswax lanolin derivatives (eg POE-sorbit beeswax etc.); alkanolamides (eg coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide etc.); POE-propylene glycol Fatty acid ester; POE-alkylamine; POE-fatty acid amide; sucrose fatty acid ester; alkylethoxydimethylamine oxide; trioleyl phosphoric acid and the like.

  Examples of the humectant include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate. Sodium lactate, bile salt, dl-pyrrolidone carboxylate, alkylene oxide derivative, short-chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, yarrow extract, merirot extract and the like.

  Examples of natural water-soluble polymers include plant-based polymers (for example, gum arabic, gum tragacanth, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (Rice, corn, potato, wheat), glycyrrhizic acid); microbial polymers (eg, xanthan gum, dextran, succinoglucan, bullulan, etc.); animal polymers (eg, collagen, casein, albumin, gelatin, etc.), etc. Is mentioned.

  Semi-synthetic water-soluble polymers include, for example, starch polymers (eg, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate) Hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder and the like); alginic acid polymers (for example, sodium alginate, propylene glycol alginate, etc.) and the like.

  Synthetic water-soluble polymers include, for example, vinyl polymers (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer); polyoxyethylene polymers (eg, polyethylene glycol 20,000, 40). , 000, 60,0000 polyoxyethylene polyoxypropylene copolymer, etc.); acrylic polymers (for example, sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers and the like.

  Examples of the thickener include gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (malmello), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, CMC, hydroxyethylcellulose, hydroxypropyl Cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, cellulose dialkyldimethylammonium sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, silicate A1Mg (bee gum), Examples thereof include laponite and silicic anhydride.

Examples of the ultraviolet absorber include benzoic acid-based ultraviolet absorbers (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester. N, N-dimethyl PABA ethyl ester, N, N-dimethyl PABA butyl ester, N, N-dimethyl PABA ethyl ester, etc.); anthranilic acid ultraviolet absorbers (for example, homomenthyl-N-acetylanthranylate, etc.); Salicylic acid-based UV absorbers (eg, amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate); For example, octylmethoxycinnamate, ethyl-4-isopropylcinnamate, methyl-2,5-diisopropylcinnamate, ethyl-2,4-diisopropylcinnamate, methyl-2,4-diisopropylcinnamate, propyl-p-methoxy Cinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl -P-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-diparamethoxycinnamate, etc.); Benzo Enon UV absorbers (for example, 2,4-dihydroxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, 2,2 ′, 4,4) '-Tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2 -Ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.); 3- (4'-methylbenzylidene) -d, l-camphor, 3-benzylidene-d, l- Camphor; 2-phenyl-5-methylbenzoxazole; 2,2′-hydroxy-5-methylphenylbenzotriazole; 2- (2′-hydroxy-5′-t-octylphenyl)
2- (2′-hydroxy-5′-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4′-t-butyldibenzoylmethane; 5- (3,3-dimethyl-2-benzoate; Norbornylidene) -3-pentan-2-one, dimorpholinopyridazino; 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate; 2,4-bis-{[4- (2-ethylhexyloxy) -2 -Hydroxy] -phenyl} -6- (4-methoxyphenyl)-(1,3,5) -triazine and the like.

  Examples of the sequestering agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, and tetrasodium edetate. Sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyl triacetate and the like.

  Examples of the lower alcohol include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like.

  Examples of the polyhydric alcohol include divalent alcohols (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, Pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trivalent alcohol (eg, glycerin, trimethylolpropane, etc.); tetravalent alcohol (eg, 1, 2, 6) Pentaerythritol such as hexanetriol, etc .; pentavalent alcohol (eg, xylitol, etc.); hexavalent alcohol (eg, sorbitol, mannitol, etc.); polyhydric alcohol polymer (eg, diethylene glycol, dipropylene glycol, Tylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, etc.); divalent alcohol alkyl ethers (for example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol) Monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol Dibutyl A Dihydric alcohol alkyl ethers (for example, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol) Monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol Dibutyl alcohol ether esters (for example, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazinate, ethylene glycol disuccinate) , Diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc .; glycerin monoalkyl ether (for example, Xyl alcohol, ceralkyl alcohol, batyl alcohol, etc.); sugar alcohols (eg sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch degrading sugar, maltose, xylitol, starch degrading sugar) Reduced alcohol etc.); Glysolid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether; POP-POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP / POE-pentane erythritol ether, polyglycerin and the like can be mentioned.

  Examples of monosaccharides include tricarbon sugars (eg, D-glyceryl aldehyde, dihydroxyacetone, etc.); tetracarbon sugars (eg, D-erythrose, D-erythrulose, D-treose, erythritol, etc.); pentose sugars (eg, L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc .; hexose (eg, D-glucose, D-talose, D) -Bucicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); pentose sugar (eg, aldheptose, heproose, etc.); octose sugar (eg, octulose, etc.); For example, 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L Mannose, etc.]; amino sugars (eg, D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); uronic acids (eg, D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D- Galacturonic acid, L-iduronic acid, etc.).

  Examples of the oligosaccharides include sucrose, gnocyanose, umbelliferose, lactose, planteose, isoliquinoses, α, α-trehalose, raffinose, lycnose, umbilicin, stachyose verbus courses and the like.

  Examples of the polysaccharide include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, kerato sulfate. , Locust bean gum, succinoglucan, caronic acid and the like.

  Examples of amino acids include neutral amino acids (eg, threonine, cysteine, etc.); basic amino acids (eg, hydroxylysine, etc.) and the like. Examples of amino acid derivatives include acyl sarcosine sodium (lauroyl sarcosine sodium), acyl glutamate, acyl β-alanine sodium, glutathione, and pyrrolidone carboxylic acid.

Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol. Is mentioned.
Examples of the polymer emulsion include an acrylic resin emulsion, a polyethyl acrylate emulsion, an acrylic resin liquid, a polyacryl alkyl ester emulsion, a polyvinyl acetate resin emulsion, and a natural rubber latex.

Examples of the pH adjuster include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.
Examples of vitamins include vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin and the like.
Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters and the like.

  Examples of the antioxidant assistant include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

  Other ingredients that can be blended include, for example, preservatives (ethyl paraben, butyl paraben, etc.); anti-inflammatory agents (eg, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); Extract, placenta extract, saxifrage extract, arbutin, etc.); various extracts (eg, buckwheat, auren, shikon, peonies, assembly, birch, sage, loquat, carrot, aloe, mallow), iris, grape, yokuinin, loofah, lily , Saffron, nematode, ginger, hypericum, onionis, garlic, capsicum, chimney, red snapper, seaweed, etc.), activator (eg, royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (eg, nonyl acid wallenylamide, nicotine) Acid Gyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, gingerone, cantalis tincture, ictamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandrate, cinnarizine, trazoline, acetylcholine, verapamil, cephalanthin , Γ-oryzanol, etc.); antiseborrheic agents (eg, sulfur, thianthol, etc.); anti-inflammatory agents (eg, tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

  Furthermore, edetate disodium, edetate trisodium, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, malic acid and other metal sequestering agents, caffeine, tannin, verapamil, tranexamic acid and its derivatives, licorice, Various herbal extracts such as Karin and Ichiyakusou, drugs such as tocopherol acetate, glycyrrhizic acid, glycyrrhizic acid and derivatives or salts thereof, whitening agents such as vitamin C, magnesium ascorbate phosphate, glucoside ascorbate, arbutin, kojic acid, Amino acids such as arginine and lysine and derivatives thereof, saccharides such as fructose, mannose, erythritol, trehalose and xylitol can also be appropriately blended.

Production method The powdered solid cosmetic according to the present embodiment can be produced by conventional dry molding, but after highly dispersed in a wet system using a bead mill, dry fine particles are formed by a flash dryer. It can manufacture also by the manufacturing method (W & D manufacturing method) of the powder solid cosmetics obtained.
FIG. 1 is a diagram showing an example of a device configuration used in a manufacturing method according to an embodiment of the present invention. The method for producing a powdered solid cosmetic according to the present embodiment comprises a slurry preparation step in which a swellable organically modified clay mineral of a powder component and an oily component as a binder is mixed in a volatile solvent to form a slurry; A drying step of drying to obtain a dry powder.
First, in the slurry adjustment step, using the medium stirring mill 10 shown in FIG. 1, the powder component, the oil component, and the swellable organically modified clay mineral are mixed in a volatile solvent, and the powder component is crushed / ground / A slurry is obtained by dispersing. The obtained slurry is temporarily stored in the storage tank 12 and supplied to the drying device 14 at a predetermined flow rate.

The drying device 14 used in the present embodiment makes the slurry fine droplets by mechanical shearing force, that is, shearing force generated by rotation of shearing members (plate-like members 34a, 34b, 34c) provided in the shearing means 18. The slurry is dried by blowing a dry gas to the fine droplets. The shape of the shearing member is not particularly limited as long as it meets the purpose of the present invention. For example, the shape of the shearing member may be any shape such as a blade shape or a disk shape in addition to the plate shape as described above. .
Thus, in this embodiment, since dry powder is manufactured using the drying apparatus 14 which dries in the state which made the slurry into the fine droplet, the dry powder which hardly agglomerates the powder component at the time of drying is obtained. Can do. Therefore, it is possible to provide a powdered solid cosmetic excellent in use feeling when applied to the skin. Moreover, since it is not necessary to crush again after drying, it is excellent in productivity and work environment.

It is also preferable to further include a step of filling the obtained dry powder into a container and solidifying by dry press molding. The obtained solid powdered solid cosmetics are excellent not only in the feeling of use but also in the usability such as the degree to which the puffs are removed.
Moreover, as shown in FIG. 1, in the slurry preparation process, it is preferable to use a medium stirring mill 10 in order to mix the powdered oil component and the oil component as a binder in a volatile solvent. By using a medium stirring mill, it is possible to obtain a slurry in which the oil component is cleanly coated on the surface of the powder component, and by using the slurry, it is possible to obtain a powder solid cosmetic with further improved feel and usability. it can.

<Slurry preparation process>
Examples of the method for mixing the powder component and the oil component in a volatile solvent to form a slurry include the following methods.
(A) Powder and oil previously dry-mixed / pulverized with a Henschel mixer (registered trademark) or pulverizer, etc. are added to a volatile solvent, and a disper mixer, a homogenizer, a planetary mixer, a twin-screw kneader, etc. By mixing / dispersing method.
(B) A method in which powder and oil are added to a volatile solvent and, if necessary, premixed with a disper mixer or the like, and then pulverized / ground / dispersed with a medium stirring mill.
(C) A partly specific powder component having strong cohesive properties such as polymer elastic powder and fine particle powder is added to a volatile solvent. If necessary, this is premixed with a disper mixer or the like, and then a medium stirring mill is used. A dispersion is obtained by pulverizing / pulverizing / dispersing, adding the dispersion and other powdered oil, and further using a wet mixer or a medium stirring mill.
In addition, it is suitable to use a medium stirring mill in the slurry preparation step (for example, (B) and (C) above). The medium agitation mill is a medium in which a dispersion liquid composed of a powder component (and an oil component) and a solvent is contained in a container filled with a solid dispersion medium (medium) such as beads and the liquid in the container is agitated. The powder component is crushed / pulverized / dispersed by impact force, frictional force, and the like.

2 and 3 are schematic configuration diagrams showing examples of a medium agitating mill preferably used in the present invention. The medium agitating mill that can be suitably used in the present invention is not particularly limited to the following, and any medium stirring mill may be used as long as the object of the present invention can be achieved.
The medium stirring mill 110 in the example shown in FIG. 2 is attached to a substantially cylindrical container 112, a drive shaft 114 inserted into the container 112, a drive motor 116 that rotationally drives the drive shaft 114, and the drive shaft 114. A plurality of stirring disks 118a to 118f. The inside of the container 112 is divided into a dispersion chamber 120 for crushing / pulverizing / dispersing the powder component and an extraction chamber 122 for extracting the treated dispersion liquid. A supply port 124 for supplying the dispersion liquid to be treated is provided on the dispersion chamber 120 side of the container 112, and an extraction port 126 for taking out the treated dispersion liquid is provided on the extraction chamber 122 side. A partition wall 130 having an opening 128 is provided between the dispersion chamber 120 and the extraction chamber 122, and a separation disk 132 attached to the drive shaft 114 is disposed in the vicinity of the partition wall 130. 128 is disposed so as to cover 128. A gap is provided between the partition wall 130 and the separation disk 132, and this gap is used as a separation slit 134 for separating the solid dispersion medium and the dispersion liquid to be treated.

The dispersion liquid containing the powder component and the solvent is sequentially supplied from the supply port 124 to the dispersion chamber 120 in the container 112, and the dispersion liquid in the dispersion chamber 120 sequentially moves toward the extraction chamber 122. At this time, the drive shaft 114 is rotationally driven by the drive motor 116, and the stirring disks 118a to 118f are rotating. The dispersion chamber 120 is filled with a large number of solid dispersion media 136, and the solid dispersion media 136 are stirred together with the dispersion by the rotation of the stirring disks 118a to 118f. The agglomerated powder component in the dispersion is crushed / pulverized / dispersed by impact force or shear stress from the solid dispersion medium 136.
The pulverized / ground / dispersed dispersion liquid passes through the separation slit 134 between the partition wall 130 and the separation disk 132 between the dispersion chamber 120 and the extraction chamber 122 and flows into the extraction chamber 122. , Extracted from the extraction port 126 to the outside. The separation slit 134 is sized so that the solid dispersion medium 136 does not flow out of the dispersion chamber 120 into the extraction chamber 122. Therefore, when the dispersion liquid passes through the separation slit 134, the dispersion liquid (powder component + solvent) and the solid dispersion medium 136 are separated, and only the dispersion liquid enters the extraction chamber.

  FIG. 3 is a schematic configuration diagram of an annular type medium stirring mill. The medium agitating mill 210 shown in FIG. 3 includes a container 212 having a substantially W-shaped cross section that is symmetric with respect to the central axis A, and a substantially inverted U-shaped rotor that is provided in the container 212 and is rotatable about the central axis A 214 and a drive motor 216 that rotationally drives the rotor 214. An annular space 218 is formed between the inner surface of the container 216 and the outer surface of the rotor 214, and the annular space 218 has a shape having a substantially V-shaped cross section on both sides of the central axis A. Further, the container 212 is formed with a supply port 220 for sending the dispersion liquid (powder component + solvent) to be processed into the annular space 218 and an extraction port 222 for taking out the treated dispersion liquid from the annular space 218. Yes. The annular space 218 is filled with a solid dispersion medium 224, and the annular space 218 is used as a dispersion chamber for crushing / pulverizing / dispersing the powder components in the dispersion.

The dispersion supplied from the supply port 220 is sent to the annular space 218 through the inlet slit 226. The fed dispersion liquid moves in the annular space 218 and is taken out from the extraction port 222 through the outlet slit 228. At this time, by rotating the rotor 214 around the central axis A in the annular space 218, the dispersion liquid and the solid dispersion medium 224 in the annular space 218 are agitated. Then, the agglomerated powder component in the dispersion is crushed / pulverized / dispersed by the impact force or shear stress from the solid dispersion medium 224. Thereafter, the dispersion passes through the exit slit 228 and is taken out from the extraction port 222.
The exit slit 228 has such a size that the solid dispersion medium 224 does not flow out of the annular space 218, and functions as a separation means for separating the dispersion (powder component + solvent) from the solid dispersion medium 224. In addition, the rotor 214 is provided with a return hole 230 for returning the solid dispersion medium 224 to the inlet side so that the solid dispersion medium 224 does not stay near the outlet.

The reason for crushing / pulverizing / dispersing the powder and oil in a volatile solvent using a medium stirring mill is that the mixing / dispersing state of the powder component and the oil component can be increased, and the surface of the powder component can be evenly distributed. This is because the oily component can be coated, so that a powdered solid cosmetic having a good feeling to use can be obtained. It is also possible to easily pulverize a highly cohesive powder and disperse it uniformly in a volatile solvent.
Examples of the medium agitating mill include, in addition to those described above, a batch type bead mill such as a basket mill, a horizontal type, a vertical type, an annular type continuous type bead mill, a sand grinder mill, a ball mill, and Micros (registered trademark). And the like can be used without any particular limitation as long as they meet the object of the present invention. That is, when blending powder components in an agglomerated state, there is no particular limitation as long as the powder components can be agglomerated to stir and disperse to a state close to primary particles and the oily component can be uniformly adhered to the powder surface. Can be used.

  The medium used in the medium agitating mill is preferably beads, and beads made of glass, alumina, zirconia, steel, flint stone and the like can be used, and zirconia is particularly preferable. Further, as the size of the beads, those having a diameter of about 0.5 to 10 mm are usually preferably used, but those having a diameter of about 2 mm to 5 mm are preferably used in the present invention. If the bead diameter is too small, crushing of extender pigments such as mica and talc will proceed excessively, adversely affecting the feel of use, and the hardness after molding will become difficult to remove, caking etc. It becomes easy to cause. On the other hand, if the size of the beads is too large, the aggregation of the powder component cannot be sufficiently solved, and it becomes difficult to uniformly coat the oil component.

The volatile solvent used in the present invention is not particularly limited, but purified water, cyclic silicone, ethanol, light liquid isoparaffin, lower alcohol, ethers, LPG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, volatile linear chain Silicone, next-generation chlorofluorocarbon, and the like. One or more of these solvents can be mixed and used appropriately according to the characteristics of the powder component to be used and the characteristics of the oil component.
In the slurry preparation step, the amount ratio (mass ratio) of the powder component to the oil component depends on the oil component used and the type of the powder component, but the powder component / oil component = 60/40 to 99.5 / 0. .5 is preferred. In addition, the amount of the volatile solvent used at this time depends on the polarity and specific gravity of the volatile solvent to be used, and thus cannot be specified, but it is important to ensure fluidity that enables processing with a medium stirring mill. It is.

<Drying process>
Next, an example of a drying apparatus used in the drying process of the manufacturing method according to the embodiment of the present invention will be described with reference to FIG. Note that the drying apparatus used in the manufacturing method according to the present embodiment is not limited to that shown in FIG. 1, and may be any apparatus provided with shearing means for mechanically turning the slurry into fine droplets. The drying device 14 shown in FIG. 1 is configured such that a slurry is dried by a hollow casing 16 serving as a place for drying the slurry and a rotating shearing member (plate-shaped members 34a, 34b, 34c) provided in the casing 16. Shearing means 18 for forming fine droplets, supply means 20 for supplying slurry to the shearing members (plate-like members 34a, 34b, 34c) in the casing 16, and dry gas is blown into the casing 16 to shear the means. 18 is provided with a blowing means 22 for supplying a drying gas to the slurry made into fine droplets by 18 and a collecting means 24 for collecting the dry powder generated by drying the slurry.

The casing 16 has a vertical, hollow, and substantially cylindrical shape, and has a discharge port 26 that discharges dry powder and dry gas at the top, and a blower that supplies dry gas from the blowing means 22 into the casing 16 at the bottom. A mouth 28 is provided. Further, the supply port 30 for supplying the slurry into the housing 16 is located between the discharge port 26 located at the top of the housing 16 and the blower port 28 located at the bottom.
The shearing means 18 rotates the rotary shaft 32 provided in the vertical direction from the bottom of the housing 16, shear members (plate-like members 34 a, 34 b, 34 c) provided at right angles to the rotary shaft 32, and the rotary shaft 32. And a drive unit 36. The drive unit 36 is disposed outside the housing 16 and transmits a rotational force to the shearing members (plate-like members 34a, 34b, 34c) via the rotation shaft 32. The shearing member shown in FIG. 1 is configured by three plate-like members 34a, 34b, and 34c provided at right angles to the rotation shaft 32 at intervals in the vertical direction. These shear members are located below the slurry supply port 30 and above the dry gas blowing port 28. By rotating the rotating shaft 32 by the drive unit 36 constituted by a motor or the like, the plate-like members 34a, 34b, 34c rotate in the horizontal direction around the rotating shaft 32 in the housing 16, and this mechanical shearing is performed. The slurry is made into fine droplets by force.

The supply means 20 supplies the slurry sent from the storage tank 12 into the housing 16. The slurry supplied into the housing 16 falls toward the plate-like members 34a, 34b, and 34c, and is made into fine droplets by the rotating plate-like members 34a, 34b, and 34c. Further, the dry gas sent from the blowing means 22 is blown into the housing 16 from the blower port 28. Since the dry gas is supplied toward the tangential direction of the horizontal section of the casing 16 and the plate members 34a, 34b, and 34c are rotating, the dry gas flow blown into the casing 16 swirls. It becomes a flow. When the slurry in the form of fine droplets comes into contact with this dry gas flow, the slurry is further refined and dried to form a dry powder. The dry powder is blown up to the upper part of the housing 16 together with the dry gas flow, and is discharged from the discharge port 26. The dry powder discharged out of the casing 16 from the discharge port 26 is collected by the collecting means 24.
A classifying means 38 is provided at the portion of the discharge port 26 in the housing 16. The classifying means 38 is configured as an orifice provided in the discharge port 26, and prevents large particles, lumps, undried products, etc. from entering the collecting means 24. Note that the configuration of the classification means is not limited to this, and other configurations may be used.

Thus, by giving mechanical shearing force to the slurry by the shear members (plate-like members 34a, 34b, 34c) and drying the slurry in the form of fine droplets, a dry powder with less aggregation can be obtained. it can. The reason why the dry powder has less agglomeration is that fine droplets reduce the amount of powder components present in the droplets, so that aggregation during drying is less likely to occur, and aggregation of powder components that occurs during the drying process It may be solved by a shearing force caused by a shearing member or a swirling flow.
Here, as the shearing member, a member constituted by a plate-like member rotating in the horizontal direction is shown, but in addition to this, a member constituted by a plate-like member rotating in the vertical direction (rotating shaft in the horizontal direction) is also provided. May be. Further, the shape of the shearing member is not limited to the above-described one, and examples thereof include a blade shape (such as a rod member perpendicular to the rotation axis provided with a cutter perpendicularly), a disk shape, and the like. Also, the number of shear members is not particularly limited.

The above-mentioned drying apparatus is of a type called a flash dryer. For example, a spin flash dryer manufactured by APV Nordic Anhyro, a dry meister manufactured by Hosokawa Micron, a vertical stirring dryer manufactured by Tsukishima Kikai Co., Ltd. Is mentioned. The drying apparatus suitably used in the present invention is not limited to this, and any system having a shearing mechanism in the system may be used, and any of a vertical type and a horizontal type may be used.
Further, the temperature of the drying gas used for drying can be changed depending on the boiling point of the volatile solvent used. In addition, since the drying efficiency increases as the temperature of the drying gas increases, it is desirable to set the temperature to a high temperature within a range that does not adversely affect the modification of the dry powder constituents by heat.
In addition, since an inert gas such as nitrogen gas or Ar gas is sealed in the housing 16, the explosion resistance is improved, so that the work environment is improved. In addition, the solvent can be recovered by incorporating a solvent recovery mechanism such as a condenser.

<Solidification process>
In the method for producing a powdered solid cosmetic according to an embodiment of the present invention, it is preferable that the method further includes a solidification step of filling a dry powder in a container and solidifying by dry molding. As the solidification method, a conventionally known dry press molding or the like may be used. The powdered solid cosmetic thus obtained also has good usability (adhesiveness to puff), which is an advantage of dry molding, while maintaining the excellent feeling of use that is an advantage of the wet manufacturing method. In addition, in the case of conventional wet molding including a step of filling a slurry into a container by injection filling, since it is necessary to consider the filling properties of the slurry, there are limitations on the raw materials to be used, but normal dry press molding is performed As long as there is no limitation on the raw materials used, there is an advantage.
Moreover, the blending amount of the dry powder when obtaining the powder cosmetic is preferably 0.5 to 100 parts by weight, more preferably 30 to 100 parts by weight with respect to 100 parts by weight of the cosmetic.

  Furthermore, when preparing a powdered solid cosmetic to which a pearl pigment typified by titanium mica or glass pearl is added, first of all, using the powder component of the portion other than the pearl pigment, the slurry preparation step and the drying step are performed. After that, a dry powder is obtained. This dry powder and the required amount of pearl pigment are mixed in a dry mixer with low shearing force, such as a Henschel mixer or Nauter mixer, to form a mixed powder, and the mixed powder is filled into a container or further dry-molded to form a powder solid Get cosmetics. The powdered solid cosmetic obtained by this method is not only excellent in use feeling and usability, but also excellent in pearl feeling.

  The production method according to the present invention is suitably applied to powdered or solid powdered solid cosmetics such as foundations, eye shadows, teak colors, body powders, perfume powders, baby powders, pressed powders, deodorant powders, and candy. The

  Examples and the like according to the present invention will be described below, but the present invention is not limited thereto. In addition, the quantity in the following prescription is shown by the mass%.

<Evaluation of usability of powdered solid cosmetics>
(A) Make-up evaluation The foundation was prepared by the above-mentioned slurry adjustment process and powder solid cosmetic manufacturing process with the formulation shown in the following table, and the panel test was performed by the following method about the make-up. Ten professional cosmetic panels applied the obtained foundation to the skin. Then, after 3 hours, 3 expert evaluators evaluated each of the evaluation items of “Yori Evaluation” and “Electric Evaluation” based on the following evaluation criteria (very poor makeup: 0 points to very long makeup) Good: 10 points), and from the average score of three people, the determination was made according to the following criteria.

[Judgment]
◎: Average score is 9 or more and less than 10 ○: Average score is 6 or more and less than 8 ○ △: Average score is 4 or more and less than 5 △: Average score is 2 or more and less than 3 points x: Average score of less than 2 points

(B) Usability Evaluation 10 cosmetic panels apply the obtained foundation to the skin, and the difference between before and after the treatment is evaluated for each of the “usability” evaluation items on a five-point scale (use Very poor: 0 points to very good usability: 5 points).

(C) Roughness Evaluation 10 cosmetic panels apply the obtained foundation to the skin, and the difference between before and after treatment is evaluated with respect to the “Roughness” evaluation item, with a 5-level evaluation (very rough) : 0 points to no roughness at all: 5 points).

<Measurement of maximum particle size>
The maximum particle size of the obtained powdered solid cosmetic was measured by particle size distribution measurement. The apparatus used was a Microtrac particle size distribution meter manufactured by Nikkiso Co., Ltd.

＊１ ベントン３８（ナショナルレッド社製）
（製法）上記表１処方に示す粉末成分と油性成分と膨潤性有機変性粘土鉱物とを常法により乾式混合し粉砕した後、プレス成型し、固形状の粉末固形化粧料を得た。

* 1 Benton 38 (National Red)
(Production method) The powder component, oil component and swellable organically modified clay mineral shown in Table 1 above were dry-mixed and pulverized by a conventional method, followed by press molding to obtain a solid powder solid cosmetic.

  From Table 1 above, it was confirmed that in Examples 1-2 to 1-5 in which 0.1 to 10% by mass of the swellable organically modified clay mineral of the present invention was blended, it was excellent in the evaluation of use and evaluation and usability evaluation. . On the other hand, about the manufacture example 1-1 which did not mix | blend the swellable organic modified clay mineral of this invention at all, it became a result inferior to a Yore-tekari evaluation, and the manufacture example which mix | blended more than 10 mass% of said swellable organic modified clay minerals. In 1-6, it became inferior to usability.

  Then, in order to investigate the kind of clay mineral which can be mix | blended with the powder solid cosmetics of this invention as shown in the following prescription table 2, it determined in accordance with the criteria similar to the above.

＊１ ベントン３８（ナショナルレッド社製）
＊２ TIXOGEL MP100（Rockwood Specialties Group）
（製法）上記表２処方に示す粉末成分と油性成分と膨潤性有機変性粘土鉱物とを常法により乾式混合し粉砕した後、プレス成型し、固形状の粉末固形化粧料を得た。

* 1 Benton 38 (National Red)
* 2 TIXOGEL MP100 (Rockwood Specialties Group)
(Production method) The powder component, the oil component and the swellable organically modified clay mineral shown in Table 2 above were dry-mixed and pulverized by a conventional method, followed by press molding to obtain a solid powder solid cosmetic.

  As can be seen from the results in Table 2 above, unmodified clay minerals (hectorite, bentonite) were not able to recognize the dripping and shining prevention effect and the usability evaluation, and were excellent in these evaluations. In order to obtain a powdered solid cosmetic, it has become clear that it is preferable to use organically modified hectorite, which is an organically modified clay mineral, and organically modified bentonite. This indicates that organically modified hectorite or organically modified bentonite is superior in gelling ability of sebum components than other unmodified clay minerals.

  Subsequently, as shown in the following Formulation Table 3, the foundation was adjusted by changing the blending ratio of silicone oil that could be blended into the powdered solid cosmetic.

＊２ ベントン３８（ナショナルレッド社製）
（製法）上記表３処方に示す粉末成分と油性成分と膨潤性有機変性粘土鉱物とを常法により乾式混合し粉砕した後、プレス成型し、固形状の粉末固形化粧料を得た。

* 2 Benton 38 (National Red)
(Production method) The powder component, oil component and swellable organically modified clay mineral shown in Table 3 above were dry-mixed and pulverized by a conventional method, and then press-molded to obtain a solid powder solid cosmetic.

  From the said Table 3, the manufacture examples 3-2 to 3-5 whose ratio of the compounding quantity of the said silicone oil with respect to the compounding quantity of the oil component whole quantity is 50% or less showed favorable usability. However, it was confirmed that Production Example 1-1 in which no silicone oil was blended at all and Production Examples 3-5 to 3-6 in which the proportion of silicone oil was blended more than 50% were remarkably inferior in terms of usability.

  Subsequently, as shown in Table 4 below, the foundation was adjusted by changing the blending amount of the polymethacrylate resin powder that can be blended in the powdered solid cosmetic.

＊１ ベントン３８（ナショナルレッド社製）
＊２ ＰＦ６３６（ＯＭＮＯＶＡ社製）

* 1 Benton 38 (National Red)
* 2 PF636 (made by OMNOVA)

(Manufacturing method)
<Slurry preparation process>
After mixing the powder component, the oil component, the swellable organically modified clay mineral and other components shown in the above-mentioned prescription table 4 and mixing in ethyl alcohol with a disper mixer, and adjusting the slurry viscosity to about 2000 mPa · s, 2 mmφ Crushing / crushing / dispersing was performed using a medium stirring mill (sand grinder mill) filled with zirconia beads. This obtained the powder slurry.

<Manufacture of powdered solid cosmetics>
The powder slurry was dried in the form of fine droplets using a stirrer / dryer Dry Meister (manufactured by Hosokawa Micron) to obtain a dry powder.
The obtained dry powder was filled into a resin intermediate dish container, and dry press molding was performed by a known method to obtain a solid powder solid cosmetic.

From Table 4 above, in addition to the swellable organically modified clay mineral of the present invention, for Production Examples 4-2 to 4-7 in which 1 to 20% by mass of polymethacrylate resin powder was further blended, Everything was excellent. And especially about the manufacture examples 4-3-4-6 which mix | blended 2-20 mass% of this polymethacrylic acid ester resin powder, it became what was very excellent also in evaluation of usability with evaluation of [yore-tekari].
On the other hand, about the manufacture example 4-1 which did not mix | blend the polymethacrylic ester resin powder at all, although high evaluation regarding usability was able to be obtained, it became inferior about evaluation of Yole and shine.

  Test Examples 5-2 to 5-4) shown in Table 5 below are obtained by mixing and dispersing a swellable organically modified clay mineral, a powder component, and an oil component in a volatile solvent using an atomizer. It is a foundation obtained by a wet method in which the powder slurry is formed by known filter press molding. On the other hand, Test Example 5-1 having the same formulation as in Table 1 is a foundation obtained by the above-described W & D production.

＊１ ベントン３８（ナショナルレッド社製）

* 1 Benton 38 (National Red)

  From Table 5 above, the foundation (Manufacturing Example 5-1) obtained by the manufacturing method of the present invention is distorted compared to the foundation (Manufacturing Examples 5-2 to 5-4) by a conventional wet method using an atomizer. It became clear that it was very excellent in evaluation and usability. Moreover, it became clear that the foundation obtained by the production method of the present invention is finely pulverized in particle size and the roughness is reduced.

  Moreover, the maximum particle diameter measurement result of the foundation obtained about the manufacture examples 5-1 to 5-4 of the said Table 5 was shown in FIG. 4, respectively. Also from FIG. 4, the powdered solid cosmetic obtained by the production method of the present invention has a particle size smaller than that of the conventional method, and improves the roughness caused by the swellable organically modified clay mineral, which has been a problem until now. I was able to.

Several examples according to the present invention will be given below, but the present invention is not limited to them. In addition, the quantity in the following prescription is shown by the mass%.
Powdery Foundation I
The powder component, the oil component, and the swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press molded to obtain a powdery foundation. The obtained powdery foundation was very excellent in use feeling and usability.

・ Prescription (powder component)
Talc residue
L-lauroyl lysine-treated synthetic fluorine phlogopite 5
Synthetic fluorine phlogopite 10
Sericite 30
Barium sulfate 20
Boron nitride 4
L-lauroyl lysine 3
Silicone-treated titanium oxide 15
Silicone-treated iron oxide red 1
Silicone-treated iron oxide yellow 3
Silicone-treated iron oxide black 0.3
(Oil component)
Diisostearyl malate 2
Vaseline 1
Trioctanoin 2
Dimethicone 1
Sorbitan sesquiisostearate 0.8
(Gelling agent)
Swellable organically modified clay mineral (Benton 38) 3
(Other)
Preservative appropriate amount
Antioxidant appropriate amount
Perfume

Powdery Foundation II
The powder component, the oil component, and the swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press molded to obtain a powdery foundation. The obtained powdery foundation was very excellent in use feeling and pearl feeling.

・ Prescription (powder component)
Talc residue
Synthetic fluorine phlogopite 20
Sericite 30
Boron nitride 4
Zinc myristate 3
Silicone-treated titanium oxide 15
Silicone-treated iron oxide red 1
Silicone-treated iron oxide yellow 3
Silicone-treated iron oxide black 0.3
(Pearl pigment component)
Spherical barium sulfate coated red interference mica titanium 3
Spherical barium sulfate coated yellow interference mica titanium 2
(Oil component)
Triisostearin 2
Vaseline 2
Trioctanoin 2
Dimethicone 3
Sorbitan sesquiisostearate 0.8
(Gelling agent)
Swellable organically modified clay mineral (Benton 27) 3
(Other)
Preservative appropriate amount
Antioxidant appropriate amount
Perfume

Amphibious Foundation A powder component, an oil component, and a swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press molded to obtain a dual-use foundation. The obtained amphibious foundation was very excellent in both feel and usability.

・ Prescription (powder component)
Silicone-treated talc Residual silicone-treated sericite 20
Silicone-treated mica 10
Silicone-treated titanium oxide 10
Zinc oxide 5
Plate-like silicic acid 5
Silicone treated bengara 0.8
Silicone-treated yellow iron oxide 3
Silicone-treated black iron oxide 0.2
Silicone elastomer spherical powder 5
Silicone resin-coated silicone elastomer spherical powder 5
(Oil component)
Liquid paraffin 4
Vaseline 4
Sorbitan sesquiisostearate 0.8
(Gelling agent)
Swellable organically modified clay mineral (TIXOGEL MP100) 3
(Other)
Preservative Appropriate amount Antioxidant Appropriate amount Fragrance Appropriate amount

The powder component, the oil component, and the swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press-molded to obtain a powder. The obtained fungus was excellent in use feeling and pearl feeling.

・ Prescription (powder component)
Mica 10
Talc Residual zinc oxide 5
Fine particle titanium oxide 3
Spherical silicone powder 20
(Pearl pigment)
Iron oxide coated red interference mica titanium 10
(Oil component)
Vaseline 1
Squalane 2
Diisostearyl malate 1
(Gelling agent)
Swellable organically modified clay mineral (TIXOGEL MP100) 3
(Other)
Preservative Appropriate amount Antioxidant Appropriate amount Fragrance Appropriate amount

Eye shadow The powder component, the oil component, and the swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press molded to obtain an eye shadow. The obtained eye shadow was excellent in use feeling, usability and pearl feeling.

・ Prescription (powder component)
Talc Residual calcined sericite 30
(Pearl pigment part)
Iron oxide coated mica titanium 30
Silica-coated aluminum bengara 10
(Oil component)
Vaseline 5
Diisostearyl malate 5
Sorbitan sesquiisostearate 0.8
(Gelling agent)
Swellable organically modified clay mineral (Benton 27) 3
(Other)
Methyl paraben Appropriate amount Antioxidant Appropriate amount Fragrance Appropriate amount

Pressed powder The powder component, oily component, and swellable organically modified clay mineral shown in the following formulation were dry mixed and pulverized in a conventional manner, and then press molded to obtain a pressed powder. The obtained pressed powder was very excellent in both feel and usability.

・ Prescription (powder component)
Metal soap treated talc Residual synthetic fluorine phlogopite 10
Spherical urethane powder 5
Spherical PMMA 5
L-lauroyl lysine 5
(Oil component)
Squalane 2
Polybutene 1
Dimethicone 2
Sorbitan sesquiisostearate 0.8
(Gelling agent)
Swellable organically modified clay mineral (Benton 38) 3
(Other)
Preservative Appropriate amount Antioxidant Appropriate amount Fragrance Appropriate amount

Body powder A powder component, an oil component, and a swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, followed by press molding to obtain a body powder. The obtained body powder was very excellent in use feeling.

・ Prescription (powder component)
Talc Remaining Mica 10
Zinc oxide 5
Spherical silicone powder 20
(Oil component)
Vaseline 1
Squalane 2
Diisostearyl malate 1
(Gelling agent)
Swellable organically modified clay mineral (Benton 27) 3
(Other)
Preservative Appropriate amount Antioxidant Appropriate amount Fragrance Appropriate amount

Perfume powder A powder component, an oil component, and a swellable organically modified clay mineral shown in the following formulation were dry-mixed and pulverized by a conventional method, and then press-molded to obtain a perfume powder. The obtained perfume powder was very excellent in use feeling.

・ Prescription (powder component)
Silicone-treated talc Residual synthetic fluorine phlogopite 10
Boron nitride 2
Silicone elastomer spherical powder 20
Red 226 0.1
(Oil component)
Vaseline 2
Trioctanoin 2
(Gelling agent)
Swellable organically modified clay mineral (TIXOGEL MP100) 3
(Other)
Preservative Appropriate amount Antioxidant Appropriate amount of perfume 1

DESCRIPTION OF SYMBOLS 10 Medium stirring mill 12 Storage tank 14 Drying device 16 Housing | casing 18 Shearing means 20 Supply means 22 Blowing means 24 Collection means

Claims (9)

Powder ingredients,
An oily component as a binder;
A swellable organically modified clay mineral as a gelling agent;
A powdered solid cosmetic comprising: In the powder solid cosmetic according to claim 1,
A powdered solid cosmetic comprising 0.1 to 10.0% by mass of a swellable organically modified clay mineral. In the powder solid cosmetic according to claim 1 or 2,
A powdered solid cosmetic, wherein the swellable organically modified clay mineral is organically modified hectorite and / or organically modified bentonite.   The powdered solid cosmetic according to any one of claims 1 to 3, wherein the silicone oil is contained in an amount of 0.5 to 20% by mass, and the ratio of the amount of the silicone oil to the amount of the oily component is 0.5 or less. A powdered solid cosmetic characterized by being.   The powder solid cosmetic according to any one of claims 1 to 4, wherein the powder solid cosmetic contains 1 to 20% by mass of a polymethacrylate resin powder. In the powder solid cosmetic according to claim 1,
A powder component, an oily component as a binder, and a swellable organically modified clay mineral as a gelling agent are mixed in a volatile solvent to form a slurry, containing a dry powder obtained by drying the slurry using a drying device,
The dry powder cosmetic is characterized in that the drying device is a drying device for drying the slurry by making the slurry into fine droplets by mechanical shearing force and blowing a dry gas into the fine droplets.   A slurry preparation step of mixing a powder component, an oil component as a binder, and a swellable organically modified clay mineral as a surface treatment agent in a volatile solvent, and a drying step of drying the slurry to obtain a dry powder A method for producing a powdered solid cosmetic, wherein the drying device used in the drying step makes the slurry fine droplets by mechanical shearing force, A method for producing a powdered solid cosmetic, which is a drying device for drying the slurry by blowing a dry gas to fine droplets. In the manufacturing method of the powder solid cosmetics of Claim 7,
The drying device used in the drying step includes a hollow casing, a shearing means for shearing the slurry into a fine droplet by a shearing member provided in the casing, and a slurry to the shearing member in the casing A supply means for supplying air, a blowing means for blowing dry gas into the housing, and supplying and contacting the dry gas with the slurry made into fine droplets by the shearing means, and drying caused by drying the slurry A method for producing a powdered solid cosmetic, characterized in that it is a drying device comprising a collecting means for collecting powder. In the manufacturing method of the powder solid cosmetics in any one of Claim 7 or 8,
In the slurry preparation step, using a medium stirring mill, a powder component and an oil component are mixed in a volatile solvent, and the powder component is crushed and / or pulverized and / or dispersed to obtain a slurry. A method for producing a powdered solid cosmetic.

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