Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0216—Solid or semisolid forms
  • A61K8/022—Powders; Compacted Powders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
  • A61K8/0279—Porous; Hollow
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/25—Silicon; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/12—Face or body powders for grooming, adorning or absorbing
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/41—Particular ingredients further characterized by their size
  • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns

Definitions

• the present invention relates to powder cosmetics and methods for producing the same.
• powdered cosmetics such as powdery foundations, eyeshadows, face powders, and blushers have been developed.
• powder cosmetics often contain particles such as silica.
• Patent Document 1 for the purpose of providing a solid powder cosmetic having excellent drop impact resistance while maintaining good usability as a cosmetic, 1 to 1
• a solid powder cosmetic is disclosed which contains 20% by mass and contains nano-hollow particles composed of silica shells.
• Patent Document 2 discloses a cosmetic containing predetermined silica-based particles in the range of 0.1 to 30% by weight, and the silica particles according to Patent Document 2 have an average particle diameter of 0. .1 to 200 ⁇ m, has cavities inside the outer shell silica layer, the porosity of the cavities is in the range of 20 to 95% by weight, the outer shell silica layer is non-porous, and the inside of the cavities is a negative pressure.
• the present invention is intended to improve the above circumstances, and its object is to improve the overall usability, and improve the moldability and impact resistance when making a solid powder cosmetic. Providing cosmetics.
• ⁇ Aspect 1> A powder cosmetic containing 80 to 99% by mass of a powder component and 1.0 to 20% by mass of an oily component, A cosmetic containing, as the powder component, the following component (A) and at least one of the following component (B) and component (C): Component (A): hollow silica particles having an average particle size of 1 to 10 ⁇ m, Component (B): solid silica particles having an average particle size of 2 to 7 ⁇ m, Component (C): porous silica particles having an average particle size of 1 to 30 ⁇ m.
• the powder cosmetic of the present invention is a powder cosmetic containing 80 to 99% by mass of a powder component and 1 to 20% by mass of an oily component,
• the powder component includes component (A) below and at least one of component (B) and component (C) below:
• Component (C) porous silica particles having an average particle size of 1 to 30 ⁇ m.
• the cosmetic of the present invention contains a powder component.
• the content of the powder component in the cosmetic of the present invention may be 80% by mass or more, 85% by mass or more, 90% by mass or more, or 95% by mass or more, or 99% by mass, relative to the total amount of the cosmetic. may be:
• the present inventors have found through their intensive research that the effects of the present invention can be achieved by using two or more types of specific silica particles as a powder component in combination, and three or more types of specific silica particles. It was found that the effect of the present invention can be exhibited more by using together.
• the cosmetic of the present invention contains the following component (A) and at least one of the following component (B) and component (C) as powder components, and From the viewpoint of further exerting the effects of the invention, it is preferable to include the following component (A), the following component (B), and the following component (C).
• Component (A) hollow silica particles having an average particle size of 1 to 10 ⁇ m
• Component (B) solid silica particles having an average particle size of 2 to 7 ⁇ m
• Component (C) porous silica particles having an average particle size of 1 to 30 ⁇ m.
• component (A) refers to hollow silica particles having an average particle size of 1 to 10 ⁇ m. Such hollow silica particles are particularly effective in imparting a light and smooth feel to powder cosmetics.
• hollow silica particles refer to silica particles having an outer shell made of silica and an inner core that is hollow.
• the shape of the hollow silica particles is not particularly limited as long as it is a hollow particle. good.
• the spherical shape is preferred, because its shape allows it to roll on the skin during application, which can improve the particularly light touch.
• the hollow silica particles as component (A) may have an average particle diameter of 1 ⁇ m or more, 2 ⁇ m or more, 3 ⁇ m or more, or 4 ⁇ m or more, and may be 10 ⁇ m or less, 8 ⁇ m or less, 6 ⁇ m or less, or 4 ⁇ m. may be:
• the average particle size of silica particles can be obtained as the average particle size in terms of volume measured by a laser light scattering method.
• the porosity of the hollow silica particles is not particularly limited. you can
• the oil absorption of the hollow silica particles is not particularly limited. It's okay.
• the oil absorption of the silica particles it was kneaded with a metal spatula while dropping a certain amount of squalane (oil), and it was visually confirmed that the entire silica particles were united and the continuous phase became oil.
• the end point is defined as the end point, and the amount of oil dripping at that time is defined as the oil absorption amount.
• the hollow silica particles may or may not be surface-treated.
• Examples of the surface treatment of the hollow silica particles include, but are not limited to, amino acid treatment, silicone treatment, metal soap treatment, and the like.
• the content of component (A) in the cosmetic of the present invention is, for example, 3.0% by mass or more, 4.0% by mass or more, 5.0% by mass or more, and 6.0% by mass with respect to the total amount of the cosmetic. % or more, or 7.0 mass % or more, and may be 20 mass % or less, 15 mass % or less, 10 mass % or less, 8.0 mass % or less, or 6.0 mass % or less.
• component (B) refers to solid silica particles having an average particle size of 2-7 ⁇ m. Such solid silica particles are particularly effective in imparting a soft feel to the powdered cosmetic together with the oily component.
• solid silica particles refer to silica particles that do not have cavities inside.
• the shape of the solid silica particles is not particularly limited as long as it does not have a cavity inside. It may be a combination of these. Among these, a spherical shape is preferable, for example, from the viewpoint of good usability derived from its shape during application.
• the solid silica particles as component (B) may have an average particle size of 2 ⁇ m or more, 4 ⁇ m or more, or 6 ⁇ m or more, and may be 10 ⁇ m or less, 8 ⁇ m or less, or 6 ⁇ m or less. .
• the oil absorption of the solid silica particles is not particularly limited. can be any oil absorption of the solid silica particles.
• the solid silica particles may or may not be surface-treated.
• the surface treatment of the hollow silica particles include, but are not limited to, amino acid treatment, silicone treatment, metal soap treatment, and the like.
• the content thereof is, for example, 2.0% by mass or more, 3.0% by mass or more, and 4.0% by mass with respect to the total amount of the cosmetic. or more, or 5.0% by mass or more, and may be 10% by mass or less, 8.0% by mass or less, or 5.0% by mass or less.
• the shape of the porous silica particles is not particularly limited as long as it is porous. good. Among these, a spherical shape is preferable, for example, from the viewpoint of resistance to agglomeration.
• the porous silica particles as component (C) may have an average particle size of 1 ⁇ m or more, 3 ⁇ m or more, 5 ⁇ m or more, or 8 ⁇ m or more, and may be 30 ⁇ m or less, 20 ⁇ m or less, or 10 ⁇ m or less.
• the oil absorption of the porous silica particles is not particularly limited, but may be, for example, 50 ml/100 g or more.
• the porous silica particles may or may not be surface-treated.
• Examples of the surface treatment of the porous silica particles include, but are not limited to, amino acid treatment, silicone treatment, metal soap treatment, and the like.
• the content thereof is, for example, 2.0% by mass or more, 3.0% by mass or more, or 4.0% by mass with respect to the total amount of the cosmetic. % or more, and may be 10% by mass or less, 8.0% by mass or less, or 6.0% by mass or less.
• the contents of each when component (A) and component (B) are used in combination, the contents of each may be the same or different, but the content of component (A) The amount may be greater than the content of component (B).
• the contents of each other when the component (A) and the component (C) are used in combination, the contents of each other may be the same or different, but the component (A) may be greater than the content of component (C).
• the respective contents when component (A), component (B) and component (C) are used in combination, the respective contents may be the same or different.
• the content of component (A) may be the highest, the content of component (C) may be intermediate, and the content of component (B) may be the lowest. More specifically, when component (A), component (B) and component (C) are used in combination, the content of component (A): the content of component (B): the content of component (C)
• the content is, for example, 1.0:0.1-2.0:0.1-2.0, 1.0:0.2-1.5:0.2-1.5, 1.0:0 .2-1.0:0.2-1.0, or 1.0:0.3-0.8:0.3-0.9.
• the cosmetic of the present invention may further contain one or more other powder components in addition to the components (A), (B), and (C) described above as powder components.
• the content can be appropriately adjusted according to the function or effect or the application of the cosmetic.
• powder components include, for example, mica, talc, kaolin, sericite (sericite), muscovite, phlogopite, synthetic mica, synthetic fluorine phlogopite, red mica, biotite, calcined talc, calcined sericite, calcined Muscovite, calcined phlogopite, boron nitride, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, sulfuric acid Barium, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder, metal soap (e.g., zinc myristate, calcium palmitate, aluminum stearate, etc.), photochromic titanium oxide (sintering iron oxide) titanium dioxide,), reduced
• natural pigments e.g., chlorophyll, ⁇ -carotene, etc.
• these other powder components are subjected to powder surface treatment with higher fatty acids, metallic soaps, oils and fats, waxes, silicone compounds, fluorine compounds, hydrocarbons, surfactants, dextrin fatty acid esters, etc., as required. may
• the cosmetic composition of the present invention contains at least one of the component (A) and the components (B) and (C) described above, thereby improving the overall usability. Therefore, it is not necessary to substantially contain the resin powder blended for the purpose of imparting a soft tactile feel, as has been reported in the past.
• the content thereof is 5.0% by mass or less, 4.0% by mass or less, relative to the total amount of the cosmetic, It may be 3.0% by mass or less, 2.0% by mass or less, 1.0% by mass or less, 0.5% by mass or less, or 0.1% by mass or less.
• the cosmetic of the present invention contains an oily component.
• the content of the oil component in the cosmetic of the present invention is 1.0% by mass or more, 5.0% by mass or more, or 10% by mass or more, and 20% by mass or less, or 15% by mass with respect to the total amount of the cosmetic. % or less.
• the oily component is not particularly limited, for example, as long as it can be generally used in cosmetics. More specific examples include, but are not limited to, liquid fats and oils, solid fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, synthetic ester oils, and silicone oils.
• the term “oily component” includes both oil and oil-soluble components.
• POE is an abbreviation for polyoxyethylene
• POP is an abbreviation for polyoxypropylene
• the number in parentheses after POE or POP represents the average added mole number of POE or POP groups in the compound.
• liquid oils examples 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, sasanqua oil, castor oil, and linseed oil. , safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, sinagiri oil, Japanese pear oil, jojoba oil, germ oil, triglycerin, etc., but are limited to these. not.
• solid fats and oils include cacao butter, coconut oil, horse fat, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, palm kernel oil, lard, beef bone fat, Japanese wax kernel oil, hydrogenated oil, beef Examples include, but are not limited to, leg fat, Japanese wax, hydrogenated castor oil, and the like.
• hydrocarbon oils include, but are not limited to, liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, vaseline, and microcrystalline wax.
• higher fatty acids examples include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, toric acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid ( DHA) and the like, but are not limited to these.
• silicone oils include dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, stearoxymethylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl/polyoxyalkylene co-modified organopolysiloxane, and alkyl-modified organopolysiloxane.
• the cosmetic of the present invention may contain other ingredients such as esters, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, moisturizing agents, as long as the effects of the present invention are not impaired.
• Water-soluble polymers, thickeners, film agents, UV absorbers, sequestering agents, lower alcohols, polyhydric alcohols, sugars, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, oxidation Antioxidants, antioxidant aids, perfumes, water and the like can be appropriately blended as necessary, and the composition can be produced by a conventional method depending on the intended dosage form.
• powder cosmetics can be prepared by blending the above essential ingredients with any one or more of the following ingredients.
• anionic surfactants include fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.); higher alkyl sulfate salts (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate salts (e.g., POE-triethanolamine lauryl sulfate, POE-sodium lauryl sulfate, etc.); N-acylsarcosic acid (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., N-myristoyl-N-methyltaurate sodium, coconut Sodium oil fatty acid methyl tauride, sodium lauryl methyl tauride, etc.); Phosphate ester salts (POE-sodium oleyl ether phosphate, POE-stearyl ether phosphate, etc.); sodium,
• Amphoteric surfactants include, for example, imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide side-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amidobetaine , sulfobetaine, etc.) and the like, but are not limited thereto.
• imidazoline-based amphoteric surfactants e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydro
• Lipophilic nonionic surfactants include, for example, sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, etc.); propylene glycol fatty acid esters (eg, propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; glycerin alkyl ether, etc. include but are not limited to:
• hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (eg, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.).
• POE-sorbitan fatty acid esters eg, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.
• POE-sorbitol fatty acid esters eg, POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.
• POE-glycerin fatty acid esters eg, POE - POE-monooleate, such as glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate, etc.
• POE-fatty acid esters e.g., POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.
• POE-alkyl ethers e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl
• natural water-soluble polymers include plant-based polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algecolloid (cassou extract), starch (rice, corn, potato, wheat), glycyrrhizic acid); microbial macromolecules (e.g., xanthan gum, dextran, succinoglucan, bullulan, etc.); animal macromolecules (e.g., collagen, casein, albumin, gelatin, etc.), etc. include, but are not limited to.
• plant-based polymers e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algecolloid (cassou extract), starch (rice, corn, potato, wheat
• semi-synthetic water-soluble polymers include starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, , hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); alginate-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.);
• Examples of synthetic water-soluble polymers include vinyl polymers (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (eg, polyethylene glycol 20,000, 40 ,000, 60,0000 polyoxyethylene polyoxypropylene copolymers, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethylene imine; , but not limited to.
• vinyl polymers eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.
• polyoxyethylene polymers eg, polyethylene glycol 20,000, 40 ,000, 60,0000 polyoxyethylene polyoxypropylene copolymers, etc.
• acrylic polymers e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.
• Thickeners include, for example, gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed (quince), casein, dextrin, gelatin, sodium pectate, sodium araginate, methylcellulose, ethylcellulose, CMC, hydroxyethylcellulose, hydroxypropyl Cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, A1 Mg silicate (Vegum), Examples include, but are not limited to, laponite, silicic anhydride, and the like.
• sequestering agents 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.
• lower alcohols include, but are not limited to, ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol, and the like.
• Polyhydric alcohols include, for example, dihydric alcohols (e.g., 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.); trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.); tetrahydric alcohols (e.g., 1,2,6 -pentaerythritol such as hexanetriol); pentahydric alcohols (e.g., xylitol, etc.); hexahydric alcohols (e.g., sorbitol, mannitol, etc.); polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, tri
• dihydric alcohol alkyl ethers e.g., 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 dihydric alcohol ether ester (e.g., ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monopheny
• Monosaccharides include, for example, 3-carbon sugar (eg, D-glycerylaldehyde, dihydroxyacetone, etc.); 4-carbon sugar (eg, D-erythrose, D-erythrulose, D-threose, erythritol, etc.); 5-carbon sugar (eg, , L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.); hexoses (e.g., D-glucose, D-talose, D -Busicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); seven-carbon sugar (e.g., aldoheptose, heprose, etc.); eight-carbon sugar (e.g.
• Oligosaccharides include, for example, sucrose, guntianose, umbelliferose, lactose, planteose, isoliquinoses, ⁇ , ⁇ -trehalose, raffinose, lignoses, umbilicin, stachyose, verbascoses, and the like. Not limited.
• polysaccharides 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, and keratosulfate.
• locust bean gum succinoglucan, caroninic acid, and the like, but are not limited thereto.
• Amino acids include, for example, neutral amino acids (eg, threonine, cysteine, etc.); basic amino acids (eg, hydroxylysine, etc.).
• amino acid derivatives include, but are not limited to, sodium acyl sarcosinate (sodium lauroyl sarcosinate), acyl glutamate, sodium acyl ⁇ -alanine, glutathione, pyrrolidone carboxylic acid and the like.
• organic amines examples include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, and the like. include, but are not limited to.
• polymer emulsions include, but are not limited to, acrylic resin emulsions, polyethyl acrylate emulsions, acrylic resin liquids, polyacrylic alkyl ester emulsions, polyvinyl acetate resin emulsions, and natural rubber latex.
• pH adjusters include, but are not limited to, buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.
• vitamins include, but are not limited to, vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin, and the like.
• antioxidants include, but are not limited to, tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, and gallic acid esters.
• antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid. is not limited to
• ingredients that can be blended include, for example, preservatives (ethylparaben, butylparaben, chlorphenesin, phenoxyethanol, etc.); ); whitening agent (e.g., placenta extract, saxifrage extract, arbutin, etc.); , coix seed, loofah, lily, saffron, cnidium, ginger, hypericum, ononis, garlic, hot pepper, chimp, angelica, seaweed, etc.), activator (e.g., royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (e.g., , Nonylic Acid Valenylamide, Nicotinic Acid Benzyl Ester, Nicotinic Acid ⁇ -Butoxyethyl Ester, Capsaicin, Zingerone, Cantharis Tincture, Ictamol, Tannic Acid, ⁇ -Borneol, Tocopherol Nicotinate, Inositol
• sequestering agents such as disodium edetate, trisodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, malic acid, caffeine, tannin, verapamil, tranexamic acid and its derivatives, licorice,
• Various crude drug extracts such as Chinese quince and Ichiyakko, medicines such as tocopherol acetate, glycyrrhizic acid, glycyrrhizic acid and its derivatives or salts thereof, whitening agents such as vitamin C, magnesium ascorbate phosphate, ascorbate glucoside, arbutin, kojic acid, etc.
• Amino acids such as arginine and lysine and derivatives thereof, sugars such as fructose, mannose, erythritol, trehalose and xylitol may also be added as appropriate.
• the product form of the cosmetic of the present invention is not particularly limited, and can take any product form within the category of powder cosmetics. More specific examples include, but are not limited to, powder foundation, eye shadow, cheek color, body powder, perfume powder, baby powder, pressed powder, deodorant powder, face powder, loose powder and the like.
• the cosmetic of the present invention is particularly applied to solid powder cosmetics such as powder foundation, eye shadow, cheek color, and pressed powder.
• this first method is Dispersing the above powder component and oily component in a solvent to prepare a slurry; filling the slurry into a container, and removing the volatile solvent from the slurry after filling the container; including, The method.
• the solvent may be either a volatile solvent or a non-volatile solvent.
• the volatile solvent for example, water as the main dispersion medium is mixed with 0 to 30% by mass of a volatile organic solvent soluble in water such as ethyl alcohol, acetone, isopropyl alcohol as a secondary dispersion medium. good. From the viewpoint of improving moldability and impact resistance, it is preferable to adjust the blending amount of the auxiliary dispersion medium so that the contact angle of the volatile dispersion medium with respect to the uniform mixture of all cosmetic ingredients is 125 to 135°.
• non-volatile solvents include non-volatile silicone-based solvents, but are not limited to these.
• the powder component and the oily component are dry-mixed/crushed by a Henschel mixer (registered trademark), a pulper, or the like in advance, and then added to the dispersion solvent.
• a Henschel mixer registered trademark
• a pulper or the like in advance
• examples thereof include a method of mixing/dispersing with a Lee mixer, Combimix (registered trademark), Ajihomo mixer, twin-screw kneader, and the like.
• the oily component contains an oil that becomes solid or pasty at 25° C., it is preferable to heat and dissolve the oily component and then dry-mix it with the powder component.
• the amount of the dispersing solvent used at this time cannot be specified because it depends on the polarity, specific gravity, etc. of the dispersing solvent used, but it is important to ensure sufficient fluidity at the time of filling and molding. It is common to use half to twice the amount.
• the slurry prepared as described above can be suitably filled into a container such as a medium plate made of metal or resin by injection filling or the like.
• the method for removing the solvent may be, for example, suction press molding or the like, and may further include drying with a dryer as appropriate.
• this first method may also be referred to as a "wet manufacturing method”.
• this second method consists of Dispersing the above powder component and oily component in a solvent to prepare a slurry; drying the slurry to obtain a dry powder; including, The method.
• the method for preparing the slurry and the details of the solvent may be the same as the “first method” described above, so the description is omitted here.
• the "slurry preparation step” and “volatile solvent” (especially when the solvent is used as the volatile solvent) described in JP-A-2007-55990 may be employed as appropriate.
• the prepared slurry can be dried to obtain a dry powder.
• this drying apparatus when drying the slurry, for example, a drying apparatus may be used that dries the slurry by turning the slurry into fine droplets by mechanical shearing force and blowing a drying gas onto the fine droplets.
• this drying apparatus includes a hollow housing, a shearing means for shearing the slurry by a shearing member provided in the housing to form fine droplets, and a supply means for supplying the slurry to the shearing member in the housing. and a blowing means for blowing a dry gas into the housing to supply and contact the dry gas to the slurry made into fine droplets by the shearing means, and a collecting means for collecting the dry powder generated by drying the slurry.
• It may be a drying device comprising
• JP-A-2007-55990 may be referred to as appropriate.
• the second method of the present invention may further include filling the resulting dry powder into a container and solidifying it by dry molding.
• this second method may be referred to as the "W&D manufacturing method”.
• Examples 1 to 3 and Comparative Examples 1 to 4>> Manufactured by W&D manufacturing method: The powder component described in the formulation shown in Table 1 below and the oily component are mixed, mixed in ethyl alcohol with a disper mixer, the slurry viscosity is adjusted to about 4000 mPa s, and then a twin-screw kneader is used. to mix/disperse. A powder slurry was thus obtained.
• the obtained powder slurry was dried in the state of fine droplets using a stirring drying device (spin flash dryer, APV Nordic Anhyro) to obtain dry powder.
• a stirring drying device spin flash dryer, APV Nordic Anhyro
• the obtained dry powder was filled in a resin-made medium dish container and subjected to dry press molding by a known method to obtain solid powder cosmetics for each of Examples 1 to 3 and Comparative Examples 1 to 4. .
• A can be molded into a resin-like medium plate by pressing with a constant pressure
• B Can be molded into a resinous medium plate by pressing at a constant pressure, but is brittle
• C Even if it presses by a fixed pressure, it does not solidify and cannot be molded.

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• 2022
  • 2022-06-10 EP EP22824935.5A patent/EP4356897A4/en not_active Withdrawn
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