WO2021106733A1

WO2021106733A1 - Powdered solid cosmetic product

Info

Publication number: WO2021106733A1
Application number: PCT/JP2020/043143
Authority: WO
Inventors: 晃佑有本; 友大澤; 元春木村; 愛高村
Original assignee: 株式会社資生堂
Priority date: 2019-11-29
Filing date: 2020-11-19
Publication date: 2021-06-03
Also published as: JP7381309B2; CN114746067A; JP2021084893A

Abstract

The purpose of the present invention is to provide a powdered solid cosmetic which has sufficient impact resistance while having similar usability to when an elastic spherical powder is blended. The powdered solid cosmetic according to the present invention comprises (A) mica, (B) a spherical silicic acid anhydride, and (C) boron nitride and is characterized in that the content of components (A) to (C) satisfies (A)+(B)+(C)= 37 to 67 mass%, (A)+(C)= 35 to 53 mass%, and (B)+(C)= 11 to 46 mass%.

Description

Powder solid cosmetics

The present invention relates to powdered solid cosmetics. More specifically, the present invention relates to a powder solid cosmetic which can realize excellent usability without substantially blending an elastic spherical powder and has high impact resistance.

Powdered solid cosmetics are cosmetic bases that are widely used in makeup cosmetics such as foundations and eye shadows. In general, powdered solid cosmetics are composed of a powder as a main component and an oil component acting as a binder or an adhesive thereof. Since the powder portion is the main base material of cosmetics, it has a great influence on usability such as spread on the skin, smoothness, and uniform finish. Among them, the spherical powder has an important role in improving the slipperiness by rolling on the skin, spreading lightly, and realizing a smooth finish.

As the spherical powder in powder solid cosmetics such as powder foundation, synthetic resin powder such as polymethylmethacrylate (PMMA) powder, nylon powder, urethane powder, etc. may be used in order to improve the smoothness and softness of the feel. There are many.

However, among these, the elastic spherical powder having relatively high flexibility has a small contact surface with other powders because it is spherical, and its elasticity makes it difficult to solidify and is inferior in moldability. Therefore, although it is possible to impart excellent usability to the powdered solid cosmetics, it is difficult to realize sufficient impact resistance at the same time.
So far, many attempts have been made to improve the impact resistance of powdered solid cosmetics containing elastic spherical powder. For example, a solid oil powder atomized by an evaporation method in gas may be used as a binder (Patent Document 1), a spherical polyolefin resin powder may be blended (Patent Document 2), and a rotary blade facing mixing device having a specific structure may be used. It has been proposed to use it (Patent Document 3). However, in addition to the restrictions of having to use specific raw materials and specific equipment, it is still difficult to improve the impact resistance to a sufficient level.

Under these circumstances, a new technology is required to achieve both excellent usability and impact resistance without blending elastic spherical powder.

Japanese Unexamined Patent Publication No. 2005-272427 Japanese Unexamined Patent Publication No. 2006-169207 JP-A-2009-167181

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a powdered solid cosmetic having sufficient impact resistance while having the same usability as when an elastic spherical powder is blended. To do.

As a result of diligent research to solve the above problems, the present inventors have achieved excellent usability by blending mica, spherical anhydrous silicic acid, and boron nitride so as to satisfy a predetermined blending amount condition. We have found that it is possible to realize a powdered solid cosmetic having both impact resistance, and have completed the present invention.

That is, in the present invention, the following components (A) to (C):
(A) Mica,
(B) Spherical silicic acid anhydride and (C) Boron nitride,
, And the blending amount of the components (A) to (C) is
(A) + (B) + (C) = 37-67% by mass,
(A) + (C) = 35 to 53% by mass, and (B) + (C) = 11 to 46% by mass
The gist is a powdered solid cosmetic that satisfies the above conditions.

The present invention is a powdered solid cosmetic having sufficient usability without blending elastic spherical powder, which has been widely used as a usability-improving powder in conventional powdered solid cosmetics, and also has excellent impact resistance. Can be realized.

The powdered solid cosmetic of the present invention contains mica, spherical silicic anhydride, and boron nitride under predetermined conditions. The details will be described below.

<(A) Mica>
The mica (A) used in the present invention may be a natural mica, a synthetic mica, or a combination of the natural mica and the synthetic mica. The type of (A) mica is not particularly limited, and examples thereof include muscovite, phlogopite, annite, sericite, biotite, and synthetic phlogopite.
In addition, those that have been hydrophobized can also be used. Examples of the surface treatment include silicone compound treatment, fluorine-modified silicone compound treatment, fluorine compound treatment, higher fatty acid treatment, higher alcohol treatment, fatty acid ester treatment, metal soap treatment, amino acid treatment, alkyl phosphate treatment and the like.

However, it is preferable that the mica (A) used in the present invention does not contain a glittering powder. The glittering powder is a powder having a multi-layer structure in which a coating layer of titanium oxide, iron oxide, zinc oxide, silicon oxide or the like is formed on a phlogopite-like mother powder such as phlogopite. Titanium oxide, iron oxide-coated phlogopite, iron oxide-coated phlogopite, titanium oxide-coated synthetic phlogopite, iron oxide / titanium oxide-coated phlogopite, etc. fall under this category. Since the brilliant powder develops multiple interference lights with respect to the incident white light, it may give an excessive luster (glare) or an unnatural feeling when blended with cosmetics.

The average particle size of the mica (A) is not particularly limited, but is preferably 1 μm to 150 μm, more preferably 5 μm to 60 μm.
The "average particle size" in the present specification means the cumulative 50% particle size in the particle size distribution obtained by the laser diffraction / scattering method.

(A) Commercially available mica may be used, for example, PDM-150S, PDM-9WA, PDM-5L, PDM-10L, Mica PDM-9L-20 (all by Topy Industries, Ltd.), Mica Powder # 800. , Mica powder # 5500 (both by Wakita Topy Industries, Ltd.) and the like can be used.

In the present invention, the blending amount of (A) mica is preferably 3% by mass or more, more preferably 5% by mass or more, still more preferably 10% by mass or more, based on the total cosmetics, from the viewpoint of giving an appropriate glossiness. , 39% by mass or less, more preferably 36% by mass or less.

<(B) Spherical silicic acid anhydride>
(B) Spherical anhydrous silicic acid can be used without particular limitation as long as it is used in ordinary cosmetics.
(B) The shape of spherical silicic anhydride needs to be spherical, but it does not have to be strictly true spherical, and for example, the cross section may be elliptical. A spherical shape is preferable in that a smoother and more preferable feel can be obtained. In the present invention, the true spherical shape shows a substantially perfect circular shape when projected from any direction, and the minimum value of the particle size is 80% or more, more preferably 90% or more of the maximum value. Means that
As the (B) spherical anhydrous silicic acid, commercially available products can be used, for example, SILDEX L-51 (AGC SITEC), SATINERM-5 (JGC Catalysts and Chemicals Co., Ltd.), and spherical silica P-1500 (JGC Catalysts and Chemicals Co., Ltd.) Company) and the like can be preferably used.

Further, as (B) spherical anhydrous silicic acid, one that has been hydrophobized can also be used. The hydrophobizing agent is not particularly limited, but can be prepared, for example, by covering with an organosilane compound, a silicone compound, a fluorine compound or the like. More specifically, dimethylsilylated silicic acid anhydride, trimethylsilylated silicic acid anhydride, octylsilylated silicic acid anhydride, silicone oil-treated silicic acid anhydride, methylpolysiloxane-treated silicic acid anhydride and the like are exemplified.

The average particle size of (B) spherical anhydrous silicic acid is preferably 0.05 μm or more, more preferably 0.5 μm or more, further preferably 1 μm or more, and preferably 20 μm or less, preferably 15 μm, from the viewpoint of good elongation and spread. The following is more preferable, and 10 μm or less is further preferable.

Among them, as (B) spherical anhydrous silicic acid, at least (bi) spherical anhydrous silicic acid having an oil absorption of 10 to 100 ml / 100 g and (b-ii) spherical anhydrous silicic acid having an oil absorption of 100 to 200 ml / 100 g are used. Further, it is particularly preferable that (B) spherical silicic acid anhydride is composed of only (bi) and (bi).
By blending the above two types of spherical anhydrous silicic acid having different oil absorption amounts, particularly excellent usability and impact resistance can be realized.

The "oil absorption amount" in the present specification is a numerical value measured according to JIS K5101-13-2: 2004 (simmered flax oil method). Specifically, it can be obtained by the following method.
First, 1.5 g of spherical anhydrous silicic acid, which is a sample, is collected on a medicine wrapping paper and transferred to a glass measuring plate. Next, oil (specified in JIS K 5101) is added to the sample from the burette four or five drops at a time, and the whole is thoroughly kneaded with a palette knife each time. Repeat this dropping and kneading, and when the whole becomes a hard putty-like mass, knead it drop by drop, and when the last drop is ready to be rolled into a spiral shape using a palette knife, the end point is set. The oil absorption per 100 g of the sample is calculated by the following formula.
Oil absorption (ml / 100g) = (A / W) x 100
(A represents the amount of oil dropped on the boiled flax (mL), and W represents the amount of sample collected (g))

The content mass ratio ((bi) :( b-ii)) of the spherical anhydrous silicic acid belonging to the group (bi) and the spherical anhydrous silicic acid belonging to the group (bi) is 0.1 :. The range of 20 to 20: 0.1 is preferable, and the range of 0.5: 15 to 15: 0.5 is more preferable.

In the present invention, the blending amount of (B) spherical anhydrous silicic acid is preferably 5% by mass or more, more preferably 6% by mass or more, and more preferably 6% by mass or more, based on the total cosmetics, from the viewpoint of affecting the spread and impact resistance. , 32% by mass or less, more preferably 30% by mass or less, still more preferably 28% by mass or less.

<(C) Boron Nitride>
The boron nitride (C) can be used without particular limitation as long as it is used in ordinary cosmetics. Among them, hexagonal crystals having a plate-like crystal structure are preferable from the viewpoint of usability.
The average particle size of boron nitride (C) is preferably 0.1 μm or more, more preferably 0.5 μm or more, further preferably 1 μm or more, further preferably 30 μm or less, and preferably 25 μm or less from the viewpoint of good usability. More preferably, it is more preferably 20 μm or less.

As the (C) boron nitride, a commercially available product can be used, and examples thereof include Lube Shine # 500, SHP-3, and SHP-6 (all of which are Mizushima Ferroalloy Co., Ltd.).

(C) Boron nitride can be used as it is, but it may be hydrophobized. Examples of the hydrophobizing treatment include silicone treatment, alkylsilane treatment, fatty acid treatment, N-acylamino acid treatment and the like.

The content of boron nitride (C) is preferably 2% by mass or more, more preferably 4% by mass or more, and 10% by mass or more, based on the total cosmetics, from the viewpoint of achieving a smooth feel and appropriate luster. Further, it is more preferably 42% by mass or less, and more preferably 39% by mass or less.

<Conditions for the amount of ingredients (A) to (C)>
The blending amount of the above ingredients (A) to (C) is based on the following three conditions for the entire cosmetic product:
(A) + (B) + (C) = 37-67% by mass,
(A) + (C) = 35 to 53% by mass, and (B) + (C) = 11 to 46% by mass
Must be met.
Among them, the compounding amount condition (A) + (B) + (C) is more preferably 42% by mass or more, and more preferably 65% by mass or less. Further, the blending amount condition (A) + (C) is more preferably 50% by mass or less.
If any of the above compounding amount conditions is not satisfied, excellent usability and impact resistance cannot be achieved at the same time. In particular, the compounding amount condition (A) + (B) + (C) and the compounding amount condition (B) + (C) tend to be inferior in usability unless they fall within the lower limit of the above numerical range, and exceed the upper limit. And tends to be inferior in impact resistance.

The powdered solid cosmetic of the present invention needs to satisfy the above-mentioned compounding amount conditions, but in order to achieve a more excellent effect, in addition to these, (A) + (B) is 10% by mass or more, and further. Is preferably 12% by mass or more, and is preferably 57% by mass or less, more preferably 55% by mass or less.
Further, the blending amount of the components (A) to (C) preferably satisfies the following ratio (mass ratio).
(A) / (C) = 0.07 to 12, more preferably 0.13 to 9.
(B) / (C) = 0.16 to 4, more preferably 0.18 to 3.5.
(A) / (B) = 0.43 to 5.4, more preferably 0.7 to 5.2.

<Arbitrary ingredients>
In addition to the above-mentioned components (A) to (C), the powdered solid cosmetic of the present invention may contain components usually used in cosmetics as long as the effects of the present invention are not impaired.
For example, powder components, oily components, surfactants, UV protection agents, and the like other than the above can be appropriately blended as needed.

The powder component other than the above is not particularly limited as long as it can be used in general cosmetics, but for example, an inorganic powder (for example, talc, kaolin, vermiculite, magnesium carbonate, calcium carbonate, diatomaceous soil). , Magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, metal tungate, hydroxyapatite, zeolite, ceramics powder, etc.); Organic powder (eg, polyamide resin powder (nylon powder), polyethylene Powders, polymethyl methacrylate powders, polystyrene powders, styrene and acrylic acid copolymer resin powders, benzoguanamine resin powders, polytetrafluorinated ethylene powders, cellulose powders, etc.); Inorganic white pigments (eg, zinc oxide, etc.); Inorganic Red pigments (eg, iron titanate, etc.); Inorganic purple pigments (eg, mango violet, cobalt violet, etc.); Inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); Inorganic blue pigments Pigments (eg, ultramarine, dark blue, 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 Blue 404, Red 3, Red 104, Red 106 No., Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3 and Blue No. 1 etc.); Natural pigments (For example, chlorophyll, β-carotene, etc.) and the like.

The oily component is not particularly limited as long as it can be used in general cosmetics, but liquid fats and oils, solid fats and oils, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, etc. Examples include silicone oil.
In the following description, POE is an abbreviation for polyoxyethylene and POP is an abbreviation for polyoxypropylene, and the number in parentheses after POE or POP represents the average number of moles of POE group or POP group added in the compound.

Liquid fats and oils include, for example, 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 ka oil, castor oil, flaxseed oil. , Saflower oil, cotton seed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese millet oil, jojoba oil, germ oil, triglycerin and the like.
Examples of solid fats and oils include coconut oil, palm oil, horse fat, hardened palm oil, palm oil, beef tallow, sheep fat, hardened beef tallow, palm kernel oil, lard, beef tallow, mokuro kernel oil, hardened oil, and cow. Examples include leg tallow, coconut oil, and hydrogenated palm oil.

Examples of waxes include honeydew, candelilla wax, cotton wax, carnauba wax, baby wax, ibotarou, whale wax, montan wax, lanolin, lanolin, capoc wax, lanolin acetate, liquid lanolin, sugar cane, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin. , Hohobarou, hard lanolin, cellac 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, selecin, squalene, petrolatum, microcrystalline wax and the like.

Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undesylene acid, tollic acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid ( DHA) and the like.

Higher alcohols include, for example, linear alcohols (eg, lauryl alcohols, cetyl alcohols, stearyl alcohols, behenyl alcohols, myristyl alcohols, oleyl alcohols, cetostearyl alcohols, etc.); branched alcohols (eg, monostearyl glycerin ethers (bacyl alcohols)). ), 2-Deciltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.) and the like.

Synthetic ester oils include isopropyl myristate, cetyl octanate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate. , Lanolin acetate, Isocetyl stearate, Isocetyl isostearate, Cholesteryl 12-hydroxystearate, Ethylene glycol di-2-ethylhexanoate, Dipentaerythritol fatty acid ester, N-alkylglycol monoisostearate, Neopentyl glycol dicaprate, Apple Diisostearyl Acid, Glycerin Di-2-Heptylundecanoate, Trimethylol Propane Tri-2-ethylhexanoate, Trimethylol Propane Triisostearate, Pentaerythritol Tetra-2-ethylhexanoate, Glycerin Tri-2-ethylhexanoate , Trioctanoate glycerin, triisopalmitate glycerin, triisostearate trimethylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glycerin trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl Ester, oleyl oleate, acetoglyceride, 2-heptyl undecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptyl undecyl adipate, ethyl laurate, sebacine Examples thereof include di-2-ethylhexyl acid, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate and triethyl citrate.

Silicone oils include dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, stearoxymethylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl-polyoxyalkylene co-modified organopolysiloxane, and alkyl-modified organopolysiloxane. , Unterminal modified organopolysiloxane, fluorine-modified organopolysiloxane, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicate, silicone compounds such as silicone RTV rubber and the like.

Of these, in order to further improve usability and impact resistance, it is preferable to add a silicone wax that becomes solid or paste at 25 ° C.

The surfactant preferably contains a lipophilic nonionic surfactant. Examples of the lipophilic nonionic surfactant include nonionic surfactants having an HLB of 2 to 10, more preferably 3 to 6. For example, POE (2) stearyl ether, self-emulsifying propylene glycol monostearate, glyceryl myristate, glyceryl monostearate, self-emulsifying glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, hexaglyceryl tristearate. , Decaglyceryl pentastearate, decaglyceryl pentaisostearate, decaglyceryl pentaoleate, sorbitan monostearate, sorbitan tristearate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, POE hexastearate (6) Examples thereof include sorbit, POE (3) castor oil, PEG monostearate (2), ethylene glycol monostearate, and PEG stearate (2).

As the UV protection agent (UV absorber and / or UV scatterer), those usually blended in cosmetics can be used.

The ultraviolet absorber is not particularly limited, and an ultraviolet absorber generally used for cosmetics can be widely mentioned. For example, a benzoic acid-based ultraviolet absorber (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxyPABA ethyl ester, N, N-dimethyl). PABA butyl ester, N, N-dimethyl PABA ethyl ester, etc.); Anthranilic acid-based UV absorber (eg, homomentyl-N-acetylanthranilate, etc.); Salicylic acid-based UV absorber (eg, amylsalicylate, menthylsalicylate, homo) Menthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, etc.); silicic acid-based ultraviolet absorbers (eg, octylmethoxycinnamate, ethyl-4-isopropylcinnamate, methyl-2,5-diisopropylsinna) Mates, ethyl-2,4-diisopropylsinnamate, methyl-2,4-diisopropylsinnamate, propyl-p-methoxysinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, octyl-p- Methoxysinnamete (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl- α-Cyano-β-phenylcinnamate, glycerylmono-2-ethylhexanoyl-diparamethoxycinnamate, etc.); benzophenone-based ultraviolet absorbers (eg, 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-camper, 3-benzylidene-d, l-camfer; 2-phenyl-5-methyl Benzotriazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole; 2- (2'-hydroxy-5'-methylphenyl) Benzotriazole; dibenzalazine; dianisoilmethane; 4-methoxy-4'-t-butyldibenzoylmethane; 5- (3,3-dimethyl-2-norbornenilidene) -3-pentane-2-one, dimorpholinopyridadino 2-Ethylhexyl-2-cyano-3,3-diphenylacrylate; 2,4-bis-{[4- (2-ethylhexyloxy) -2-hydroxy] -phenyl} -6- (4-methoxyphenyl)- (1,3,5) -Triazine and the like can be mentioned.

The ultraviolet scattering agent is not particularly limited, and specific examples thereof include fine particle metal oxides such as zinc oxide, titanium oxide, iron oxide, cerium oxide, and tungsten oxide.
The ultraviolet scattering agent may be one without surface treatment or one with various hydrophobic surface treatments. Surface treatment agents are widely used in the cosmetics field, for example, silicones such as dimethicone and alkyl-modified silicones, alkoxysilanes such as octylriethoxysilane, dextrin fatty acid esters such as dextrin palmitate, and fatty acids such as stearic acid. Can be used.

Further, in the powdered solid cosmetics of the present invention, pH adjusters, moisturizers, thickeners, dispersants, stabilizers, colorants, preservatives, antioxidants, fragrances and the like are also within the scope of achieving the object of the present invention. Can be appropriately blended within.

However, it is preferable to avoid blending elastic spherical powder as much as possible from the viewpoint of achieving sufficient impact resistance. Examples of the elastic spherical powder that should be avoided include nylon, polyethylene, polypropylene, polymethylmethacrylate (PMMA), silicone resin, silicone elastomer, polyurethane resin and the like. In particular, it is preferable not to mix powders made of polymethylmethacrylate, nylon, polyethylene and the like.

<Manufacturing method>
The method for producing the powdered solid cosmetic of the present invention is not particularly limited, and a known method can be used. For example, a "dry manufacturing method" in which a powder component and an oil component are mixed without using a solvent, filled in a container and molded, and a powder component and an oil component are added to a volatile dispersion medium to form a slurry, which is in the state of a slurry. "Wet manufacturing method" in which a container is filled and the solvent is removed to solidify it. The slurry is made into fine droplets by mechanical shearing force, and dry gas is blown into the fine droplets to dry the obtained dry powder. It is possible to use a manufacturing method in which ordinary dry molding is performed (hereinafter, this manufacturing method may be referred to as "W & D manufacturing method" for convenience in this document). Details of the W & D manufacturing method are described in, for example, Japanese Patent Application Laid-Open No. 2007-55990. The W & D manufacturing method can be expected to further improve usability such as puffing, smoothness, and fit.

The solvent used when preparing the slurry in the wet manufacturing method or the W & D manufacturing method is not particularly limited, but purified water, cyclic silicone, ethanol, light liquid isoparaffin, lower alcohol, ethers, LPG, fluorocarbon, N-methylpyrrolidone. , Fluoroalcohol, volatile linear silicone and the like. Typical examples of lower alcohols include ethanol, isopropanol and the like. These solvents may be used alone or in admixture of two or more, depending on the characteristics of the compounding ingredients to be used.

As the product form of the powdered solid cosmetics according to the present invention, any product form in the category of powdered cosmetics can be taken. Specifically, it can take product forms such as foundation, eye shadow, cheek color, body powder, perfume powder, baby powder, pressed powder, deodorant powder, and face powder.

The present invention will be described in more detail with reference to Examples below, but the present invention is not limited thereto. Unless otherwise specified, the blending amount is shown in mass% with respect to the total cosmetics. Before concretely explaining each embodiment, the adopted evaluation method will be described.

<Impact resistance>
The powdered solid cosmetic was set in a compact container for cosmetics, dropped from a height of 50 cm on a metal plate with the cosmetic surface facing down, and the number of times until the cosmetic cracked was examined. The impact resistance of each cosmetic was evaluated by the number of drops.
5 times or more: Withstood 5 or more drops.
3-4 times: Damaged after 3-4 drops.
2 times or less: Damaged after 1 to 2 drops.

<Usability>
Ten specialist panels applied the prepared powdered solid cosmetics on the skin, and evaluated the good spreadability and moist feeling at the time of application.
A: 9 or more out of 10 panels answered that it was good.
B: 6 or more and less than 9 out of 10 panels answered that it is good.
C: 4 or more and less than 6 out of 10 panels answered that it is good.
D: Less than 4 out of 10 panels answered that it was good.

<Examples 1 to 5 and Comparative Examples 1 to 2>
The powdered solid cosmetics of Examples 1 to 5 and Comparative Examples 1 and 2 listed in Table 1 below were prepared by a dry method. Specifically, the powder components shown in the formulation shown in Table 1 are mixed with a stirring mixer such as a Henschel mixer, then an oily component is added and mixed uniformly, crushed with a crusher such as a palperizer, and then the mixture is prepared. The container was filled. Further, it was molded by a dry press.
The above items were evaluated for the obtained powdered solid cosmetics. The evaluation results are also shown in Table 1.

* 1 Lube Shine # 500 (Mizushima Ferroalloy Co., Ltd.)
* 2 PDM-150S (Topy Industries, Ltd.)
* 3 Mica powder # 800 (Wakida Suigyo Co., Ltd.)
* 4 SILDEX L-51 (AGC SI Tech)
* 5 SATINER M5 (JGC Catalysts and Chemicals Co., Ltd.)

As shown in Table 1, it contains (A) mica, (B) spherical silicic acid anhydride, and (C) boron nitride, and the blending amounts of the components (A) to (C) are (A) + (B) +. Usability when all the conditions of (C) = 37 to 67% by mass, (A) + (C) = 35 to 53% by mass, and (B) + (C) = 11 to 46% by mass are satisfied. Good results were obtained in both the impact resistance and the impact resistance (Examples 1 to 5).
On the other hand, when the total amount of (B) and (C) deviates from the above conditions, the result is insufficient in usability or impact resistance (Comparative Examples 1 and 2).

<Examples 6 to 9 and Comparative Examples 3 to 6>
The powdered solid cosmetics of Examples 6 to 7 and Comparative Examples 3 to 4 listed in Table 2 below, and the powdered solid cosmetics of Examples 8 to 9 and Comparative Examples 5 to 6 listed in Table 3 below. , Prepared by a dry method in the same manner as in Example 1.
The above items were evaluated for the obtained powdered solid cosmetics. The evaluation results are also shown in Tables 2 and 3.

As shown in Tables 2 and 3, the blending amounts of the components (A) to (C) containing (A) mica, (B) spherical silicic acid anhydride, and (C) boron nitride are the above-mentioned predetermined blending amounts. When all of the conditions were satisfied, good results were obtained in both usability and impact resistance (Examples 6 to 9).
On the other hand, when the total amount of (A) and (C) deviates from the above conditions, the result is insufficient in usability or impact resistance (Comparative Examples 3 to 6).

<Examples 10 to 11 and Comparative Examples 7 to 8>
The powdered solid cosmetics of Examples 10 to 11 and Comparative Examples 7 to 8 listed in Table 4 below were prepared by a dry method in the same manner as in Example 1.
The above items were evaluated for the obtained powdered solid cosmetics. The evaluation results are also shown in Table 4.

As shown in Table 4, (A) mica, (B) spherical silicic acid anhydride, and (C) boron nitride are contained, and the blending amounts of the components (A) to (C) are all of the above-mentioned predetermined blending amount conditions. When the above conditions were met, good results were obtained in both usability and impact resistance (Examples 10 to 11).
On the other hand, when the total amount of (B) and (C) deviates from the above conditions, or when the total amount of (A), (B) and (C) deviates from the above conditions, in terms of usability or impact resistance. Insufficient results were obtained (Comparative Examples 7 to 8).

<Example 12 and Comparative Example 9>
The powdered solid cosmetics of Example 12 and Comparative Example 9 listed in Table 5 below were prepared by a dry method in the same manner as in Example 1.
The above items were evaluated for the obtained powdered solid cosmetics. The evaluation results are also shown in Table 5.

* 11 Nylon SP500 (Toray Industries, Inc.)
* 12 Techpolymer MBP-8HP (Sekisui Plastics Co., Ltd.)
* 13 Matsumoto Microsphere M-330 (Matsumoto Yushi Pharmaceutical Co., Ltd.)

As shown in Table 5, it has been widely used for improving usability, such as nylon powder and methyl methacrylate crosspolymer powder, without blending (B) spherical anhydrous silicic acid and (C) boron nitride. When the elastic spherical powder was blended, the usability was excellent, but the impact resistance was inferior (Comparative Example 9).
On the other hand, when (A) mica, (B) spherical anhydrous silicic acid, and (C) boron nitride are contained, and the blending amounts of the components (A) to (C) satisfy all of the above-mentioned predetermined blending amount conditions. Has the same usability as Comparative Example 9 in which the elastic spherical powder is blended, and good results are obtained in terms of impact resistance (Example 12).

The formulation of the cosmetic of the present invention is illustrated below. It goes without saying that the present invention is not limited to these prescription examples, and is specified by the scope of claims. In addition, all the compounding amounts are expressed by mass% with respect to the whole cosmetics.

Prescription example 1: Foundation (ingredient name) Blending amount (mass%)
Borosilicate (Ca / Al) 5
Talc Remaining Boron Nitride ^{* 1} 15
Mica ^{* 2} 22
Mica ^{* 3} 3
Spherical silicic acid anhydride (oil absorption 150 ml / 100 g) ^{* 4} 3.5
Spherical silicic acid anhydride (oil absorption 60 ml / 100 g) ^{* 5} 11.5
Pigment grade titanium oxide 9.2
Fine particle titanium oxide 3
Zinc oxide 1
Sulfate Ba 1
Hydrophobicized iron oxide 0.2
Magnesium myristate 2
(Stearoxymethicone / Dimethicone) Copolymer 0.8
Dimethicone 2
Hyaluronate Na 0.1
Methylphenyl polysiloxane 0.5
Tri (capryl / capric acid) glyceryl 2.5
Sorbitan sesquiisostearate 0.5
Ethylhexyl methoxycinnamate 4
Chlorphenesin Appropriate amount

Claims

The following components (A) to (C):
(A) Mica,
(B) Spherical silicic acid anhydride and (C) Boron nitride,
, And the blending amount of the components (A) to (C) is
(A) + (B) + (C) = 37-67% by mass,
(A) + (C) = 35 to 53% by mass, and (B) + (C) = 11 to 46% by mass
Meet, powder solid cosmetics.
Ingredient (B) is
The powdered solid cosmetic according to claim 1, comprising (bi) spherical anhydrous silicic acid having an oil absorption of 10 to 100 ml / 100 g, and (b-ii) spherical anhydrous silicic acid having an oil absorption of 100 to 200 ml / 100 g.
The compounding mass ratio of (bi) spherical anhydrous silicic acid and (b-ii) spherical anhydrous silicic acid ((bi) :( b-ii)) is 0.1: 20 to 20: 0.1. The powdered solid cosmetic according to claim 2.
The powdered solid cosmetic according to any one of claims 1 to 3, which does not contain polymethylmethacrylate powder, nylon powder, or polyethylene powder.