CN114746067A

CN114746067A - Powdery solid cosmetic

Info

Publication number: CN114746067A
Application number: CN202080082279.6A
Authority: CN
Inventors: 有本晃佑; 大泽友; 木村元春; 高村爱
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2019-11-29
Filing date: 2020-11-19
Publication date: 2022-07-12
Also published as: JP7381309B2; JP2021084893A; WO2021106733A1

Abstract

The purpose of the present invention is to provide a powdery solid cosmetic that has the same usability as when an elastic spherical powder is blended and has sufficient impact resistance. The powdery solid cosmetic of the present invention is characterized by containing the following components (a) to (C): (A) mica, (B) spherical anhydrous silicic acid, and (C) boron nitride, wherein the amounts of the components (A) to (C) are such that: (A) 37 to 67% by mass of (B) + (C), ((A) + (C) + (35 to 53% by mass, and (B) + (C) + (11 to 46% by mass).

Description

Powdery solid cosmetic

Technical Field

The present invention relates to a powdery solid cosmetic. More specifically, the present invention relates to: a powdery solid cosmetic which has excellent usability and high impact resistance even when an elastic spherical powder is not substantially blended.

Background

The powdery solid cosmetic is a cosmetic base commonly used in makeup cosmetics such as foundation and eye shadow. In general, a powdery solid cosmetic is composed of a powder as a main component and an oil component which functions as a binder or an adhesive. The powder portion is a main base material of cosmetics, and therefore, has a great influence on the usability such as spreading on the skin, smoothness, and uniform finish. Among them, the spherical powder improves sliding properties by rolling on the skin, and plays an important role in realizing a light-spreadable, dry and comfortable make-up feeling.

In order to improve smoothness and flexibility of touch, in particular, spherical powders in powdery solid cosmetics such as foundations, synthetic resin powders such as polymethyl methacrylate (PMMA) powder, nylon powder, and urethane powder are often used.

However, among these, the elastic spherical powder having relatively high flexibility is spherical, and therefore the contact surface with other powder is small, and further, the elastic property thereof makes it difficult to cure and the moldability is poor. Therefore, even if excellent usability can be imparted to the powdery solid cosmetic, it is difficult to achieve sufficient impact resistance at the same time.

Many attempts have been made to improve the impact resistance of powdery solid cosmetics comprising elastic spherical powders. For example, it is proposed that: as the binder, solid oil powder finely granulated by an evaporation method in a gas (patent document 1), a spherical polyolefin resin powder blended (patent document 2), a rotary blade opposed type mixing device using a specific structure (patent document 3), and the like are used. However, it is still difficult to improve the impact resistance to a sufficient level, in addition to being limited by the necessity of using a specific raw material, a specific apparatus, and the like.

Under such circumstances, there is a need for a novel technique for achieving both excellent usability and impact resistance without blending an elastic spherical powder.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-272427

Patent document 2: japanese patent laid-open No. 2006 and 16907

Patent document 3: japanese patent laid-open publication No. 2009-167181

Disclosure of Invention

Problems to be solved by the invention

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

Means for solving the problems

The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that: the present inventors have found that a powdery solid cosmetic having both excellent usability and impact resistance can be obtained by blending mica, spherical anhydrous silicic acid, and boron nitride so as to satisfy predetermined blending amount conditions, and have completed the present invention.

That is, the gist of the present invention is a powdery solid cosmetic containing the following components (a) to (C):

(A) mica, mica,

(B) Spherical anhydrous silicic acid, and

(C) the boron nitride is used for the preparation of the boron nitride,

the blending amount of the components (A) to (C) is satisfied

(A) 37 to 67 mass% of +(B) + (C),

(A) 35 to 53% by mass of +(C), and

(B) and (C) 11-46% by mass.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention can realize a powdery solid cosmetic which has sufficient usability and is excellent in impact resistance without adding an elastic spherical powder which is commonly used as a usability-improving powder in a conventional powdery solid cosmetic.

Detailed Description

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

< (A) mica

The mica (a) used in the present invention may be natural mica, synthetic mica, or a combination of natural mica and synthetic mica. The type of mica (a) is not particularly limited, and examples thereof include muscovite, phlogopite, ferrierite, sericite, biotite, and synthetic phlogopite.

Further, those subjected to a hydrophobic treatment may be used. Examples of the surface treatment include an organosilicon compound treatment, a fluorine-modified organosilicon compound treatment, a fluoride treatment, a higher fatty acid treatment, a higher alcohol treatment, a fatty acid ester treatment, a metal soap treatment, an amino acid treatment, and an alkyl phosphate treatment.

Among them, the mica (a) used in the present invention preferably does not contain a glittering powder. The glitter powder is: powders having a multilayer structure in which a coating layer of titanium oxide, iron oxide, zinc oxide, silicon oxide or the like is formed on a scaly master powder such as mica are suitable, for example, mica titanium, iron oxide-coated mica titanium, titanium oxide-coated synthetic phlogopite, iron oxide/titanium oxide-coated synthetic phlogopite, and the like. Since the glitter powder develops color by emitting multiple interference lights with respect to incident white light, when blended in a cosmetic, it may cause excessive gloss (glare) and give unnatural feeling to a human body.

(A) The average particle diameter of mica is not particularly limited, but is preferably 1 to 150. mu.m, more preferably 5 to 60 μm.

The "average particle diameter" in the present specification means: the particle size at 50% accumulation in the particle size distribution obtained by the laser diffraction/scattering method.

(A) Commercially available mica can be used, and examples thereof include PDM-150S, PDM-9WA, PDM-5L, PDM-10L, mica PDM-9L-20 (both TOPY INDUSTRIES, LIMITED), mica powder #800, and mica powder #5500 (both Wakita Suiko Co., Ltd.).

The amount of mica (a) to be blended in the present invention is preferably 3% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, and further preferably 39% by mass or less, even more preferably 36% by mass or less, based on the whole cosmetic, from the viewpoint of imparting a suitable glossy feel.

(B) spherical Anhydrous silicic acid

(B) The spherical anhydrous silicic acid may be used without particular limitation as long as it is usable in general cosmetics.

(B) The spherical anhydrous silicic acid must be spherical in shape, but need not be a perfect regular sphere, and for example, the cross section may be elliptical. The spherical shape is preferably a regular spherical shape in view of obtaining a more smooth and suitable touch. The regular sphere shape in the present invention means a shape which shows a substantially regular circle when projected from any direction and the minimum value of the particle diameter is 80% or more, more preferably 90% or more of the maximum value.

(B) As the spherical anhydrous silicic acid, commercially available ones can be used, and for example, SILDEX L-51(AGC Si-Tech Co., Ltd.), SATINIERM-5(JGC Catalysts and Chemicals Ltd.), spherical silica P-1500(JGC Catalysts and Chemicals Ltd.) and the like can be suitably used.

The spherical anhydrous silicic acid (B) may be subjected to a hydrophobic treatment. The hydrophobizing agent is not particularly limited, and can be prepared by, for example, coating with an organosilane compound, an organosilicon compound, a fluoride compound, or the like. More specifically, dimethylsilylated anhydrous silicic acid, trimethylsilylated anhydrous silicic acid, octylsilylated anhydrous silicic acid, silicone oil-treated anhydrous silicic acid, methyl polysiloxane-treated anhydrous silicic acid, and the like can be exemplified.

From the viewpoint of the good ductility, the average particle diameter of the spherical anhydrous silicic acid (B) is preferably 0.05 μm or more, more preferably 0.5 μm or more, still more preferably 1 μm or more, and further preferably 20 μm or less, more preferably 15 μm or less, still more preferably 10 μm or less.

Among them, the spherical anhydrous silicic acid (B) preferably contains at least

(b-i) a spherical anhydrous silicic acid having an oil absorption of 10 to 100ml/100g, and

(b-ii) a spherical anhydrous silicic acid having an oil absorption of 100 to 200ml/100g,

further, it is particularly preferable that the spherical anhydrous silicic acid (B) is composed of only (B-i) and (B-ii).

By blending the 2 kinds of spherical anhydrous silicic acids having different oil absorption amounts, particularly excellent usability and impact resistance can be achieved.

The "oil absorption" in the present specification means: according to JIS K5101-13-2: 2004 (boiled linseed oil method). Specifically, the following method can be used.

First, 1.5g of spherical anhydrous silicic acid as a sample was collected on a weighing paper and transferred onto a glass measuring plate. Next, boiled linseed oil (prescribed in JIS K5101) was dropped onto the sample 1 time 4 or 5 drops from a burette, and the whole was thoroughly mixed with a toning knife each time. This dropping and mixing was repeated, and 1 drop was mixed after the whole became a hard putty-like mass, and the oil absorption per 100g of the sample was calculated by the following formula, with the end point being that the last 1 drop could be wound in a spiral shape with a toning knife.

Oil absorption (ml/100g) ═ a/W × 100

(A represents the amount of boiled linseed oil added dropwise (mL) and W represents the amount of sample collected (g))

The mass ratio of the spherical anhydrous silicic acid belonging to the above-mentioned group (b-i) to the spherical anhydrous silicic acid belonging to the group (b-ii) ((b-i): b-ii)) is preferably 0.1: 20-20: a range of 0.1, more preferably 0.5: 15-15: a range of 0.5.

The amount of the spherical anhydrous silicic acid (B) to be blended in the present invention is preferably 5% by mass or more, more preferably 6% by mass or more, and further preferably 32% by mass or less, more preferably 30% by mass or less, and further preferably 28% by mass or less, based on the total cosmetic composition, from the viewpoint of affecting the ductility and impact resistance.

< boron nitride (C) >

The boron nitride (C) is not particularly limited as long as it can be used in general cosmetics. Among them, hexagonal crystals having a plate-like crystal structure are preferable in terms of usability.

From the viewpoint of the satisfactory feeling in use, the average particle diameter of the boron nitride (C) is preferably 0.1 μm or more, more preferably 0.5 μm or more, further preferably 1 μm or more, and further preferably 30 μm or less, more preferably 25 μm or less, further preferably 20 μm or less.

As the boron nitride (C), commercially available products can be used, and examples thereof include Shine Lube #500, SHP-3, SHP-6 (all of Shuihai alloy iron Co., Ltd.), and the like.

(C) The boron nitride may be used as it is, or may be subjected to a hydrophobic treatment. Examples of the hydrophobic treatment include an organosilicon treatment, an alkylsilane treatment, a fatty acid treatment, and an N-acylamino acid treatment.

The content of the boron nitride (C) is preferably 2 mass% or more, more preferably 4 mass% or more, further preferably 10 mass% or more, and further preferably 42 mass% or less, more preferably 39 mass% or less, with respect to the entire cosmetic, from the viewpoint of achieving a smooth feel in use and a suitable gloss.

< conditions for blending amounts of Components (A) to (C) >

The amount of the components (a) to (C) to be blended preferably satisfies the following 3 conditions with respect to the whole cosmetic composition:

(A) 37 to 67 mass% of +(B) + (C),

(A) 35 to 53% by mass of +(C), and

(B) and (C) 11-46% by mass.

Among these, the blending amount conditions (a) + (B) + (C) are more preferably 42% by mass or more, and still more preferably 65% by mass or less. The blending amount condition (a) + (C) is more preferably 50% by mass or less.

When any of the above-mentioned conditions for the amount of blending is not satisfied, excellent usability and impact resistance cannot be achieved at the same time. In particular, when the blending amount condition (a) + (B) + (C) and the blending amount condition (B) + (C) do not satisfy the lower limit of the above numerical range, the workability tends to be poor, and when they exceed the upper limit, the impact resistance tends to be poor.

The powdery solid cosmetic of the present invention must satisfy the above blending amount conditions, and in addition to these conditions, in order to achieve a further excellent effect, (a) + (B) is preferably 10% by mass or more, more preferably 12% by mass or more, and further preferably 57% by mass or less, more preferably 55% by mass or less.

The amounts of the components (a) to (C) are preferably such that the following ratios (mass ratios) are satisfied.

(A) 0.07 to 12, and more preferably 0.13 to 9.

(B) 0.16 to 4, more preferably 0.18 to 3.5.

(A) 0.43 to 5.4, and more preferably 0.7 to 5.2.

< optional compounding ingredients >

The powdery solid cosmetic of the present invention may contain, in addition to the components (a) to (C), components generally used in cosmetics, within a range not impairing the effects of the present invention.

For example, powder components other than those described above, oily components, surfactants, ultraviolet ray protection agents, and the like may be appropriately blended as necessary.

The powder components other than the above are not particularly limited as long as they can be used in usual cosmetics, and examples thereof include inorganic powders (for example, talc, kaolin, vermiculite, magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, metal tungstate, hydroxyapatite, zeolite, ceramic powder, and the like); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigments (e.g., zinc oxide, etc.); inorganic red pigments (e.g., iron titanate); inorganic violet pigments (e.g., mango violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine blue and prussian blue); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium, or aluminum lakes (e.g., 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, red 227, red 230, red 401, red 505, orange 205, yellow 4, yellow 5, yellow 202, yellow 203, green 3, and blue 1); natural pigments (e.g., chlorophyll, beta-carotene, etc.), and the like.

The oily component is not particularly limited as long as it can be used in a usual cosmetic, and examples thereof include liquid oils and fats, solid oils and fats, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, silicone oils, and the like.

In the following description, POE is abbreviated as polyoxyethylene, POP is abbreviated as polyoxypropylene, and the number in parentheses after POE or POP indicates the average number of moles of POE groups or POP groups added to the compound.

Examples of the liquid oils and fats include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, almond oil, wheat germ oil, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla seed oil, soybean oil, peanut oil, tea seed oil, torreya oil, rice bran oil, wood oil tung oil, japanese tung oil, jojoba oil, germ oil, and glycerin.

Examples of the solid fat and oil 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, wood wax kernel oil, hydrogenated oil, neatsfoot oil, wood wax, hydrogenated castor oil, and the like.

Examples of the waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax (bayberry wax), insect wax, spermaceti wax, montan wax, rice bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugar cane wax, isopropyl lanolin fatty acid ester, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, and POE hydrogenated lanolin alcohol ether.

Examples of the hydrocarbon oil include liquid paraffin, ceresin, squalane, pristane, paraffin, ceresin, squalene, vaseline, and microcrystalline wax.

Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tall oil acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

Examples of the higher alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetearyl alcohol, etc.); branched alcohols (e.g., monostearyl glyceryl ether (batyl alcohol), 2-decyltetradecanol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.), and the like.

Examples of the synthetic ester oil include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesterol 12-hydroxystearate, ethylene glycol bis (2-ethylhexanoate), dipentaerythritol fatty acid ester, N-alkyldiol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, di (heptyl undecyl) glycerolate, trimethylolpropane tris (2-ethylhexanoate), trimethylolpropane triisostearate, pentaerythritol tetrakis (2-ethylhexanoate), and the like, Triglyceryl (2-ethylhexanoate), glyceryl tricaprylate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl tri (myristate), glyceryl tri (heptyl undecanoate), methyl ricinoleate, oleyl oleate, acetyl glyceride, 2-undecylheptyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di (2-undecylheptyl) adipate, ethyl laurate, di (2-ethylhexyl) sebacate, di (2-ethyldecyl) myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, triethyl citrate, and the like.

Examples of the silicone oil include silicone compounds such as dimethylpolysiloxane, polymethylhydrosiloxane, polymethylphenylsiloxane, stearyloxymethylpolysiloxane, polyether-modified polyorganosiloxane, fluoroalkyl/polyoxyalkylene-modified polyorganosiloxane, alkyl-modified polyorganosiloxane, non-terminal-modified polyorganosiloxane, fluorine-modified polyorganosiloxane, amino-modified polyorganosiloxane, silica gel, acrylic silicone, trimethylsiloxy silicic acid, silicone RTV rubber and the like.

Among them, in order to further improve the usability and impact resistance, it is preferable to blend a silicone wax which becomes solid or paste at 25 ℃.

As the surfactant, a lipophilic nonionic surfactant is preferably contained. The lipophilic nonionic surfactant is preferably a nonionic surfactant having an HLB of 2 to 10, more preferably 3 to 6. Examples thereof include 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 (6) hexastearate, POE (3) castor oil, PEG (2) monostearate, ethylene glycol monostearate, PEG (2) stearate, and the like.

As the ultraviolet ray protection agent (ultraviolet ray absorber and/or ultraviolet ray scattering agent), those commonly blended in cosmetics can be used.

The ultraviolet absorber is not particularly limited, and examples thereof include ultraviolet absorbers generally used in cosmetics. Examples thereof include benzoic acid-based ultraviolet absorbers (e.g., p-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglyceride, N-dipropoxypPABA ethyl ester, N-diethoxypPABA ethyl ester, N-dimethylpPABA butyl ester, N-dimethylpPABA ethyl ester, etc.); anthranilic acid-based ultraviolet absorbers (e.g., homomenthyl-N-acetyl anthranilate); salicylic acid-based ultraviolet absorbers (e.g., amyl salicylate, menthyl salicylate, homosalate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanolphenyl salicylate, etc.); cinnamic acid-based ultraviolet absorbers (for example, octyl methoxy cinnamate, ethyl-4-isopropyl cinnamate, methyl-2, 5-diisopropyl cinnamate, ethyl-2, 4-diisopropyl cinnamate, methyl-2, 4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate, isopentyl-p-methoxy cinnamate, octyl-p-methoxy cinnamate (2-ethylhexyl-p-methoxy cinnamate), 2-ethoxyethyl-p-methoxy cinnamate, cyclohexyl-p-methoxy cinnamate, ethyl- α -cyano- β -phenyl cinnamate, 2-ethylhexyl- α -cyano- β -phenyl cinnamate, methyl-2, 5-diisopropyl cinnamate, isopropyl-p-methoxy cinnamate, octyl-p-methoxy cinnamate, 2- α -cyano- β -phenyl cinnamate, methyl-p-methoxy cinnamate, methyl-ethyl- α -cyano-p-phenyl cinnamate, methyl-p-methyl cinnamate, methyl-ethyl- α -p-cyano-p-methyl cinnamate, ethyl-p-ethyl-p-ethyl-p-methyl cinnamate, p-n-p-ethyl-p-methyl cinnamate, p-ethyl-p-n-ethyl-p-n-p-ethyl-p-methyl cinnamate, p-n-p-n-p-n-p, Glyceryl mono-2-ethylhexanoyl-di-p-methoxycinnamate, etc.); benzophenone-based ultraviolet absorbers (e.g., 2, 4-dihydroxybenzophenone, 2 ' -dihydroxy-4-methoxybenzophenone, 2 ' -dihydroxy-4, 4 ' -dimethoxybenzophenone, 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-octyloxybenzophenone, 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' -tert-octylphenyl) benzotriazole; 2- (2 ' -hydroxy-5 ' -methylphenylbenzotriazole, dibenzoxazine, dianisiloylmethane, 4-methoxy-4 ' -tert-butyldibenzoylmethane, 5- (3, 3-dimethyl-2-norbornylene) -3-pentan-2-one, dimorpholinopyridazinone, 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.

The ultraviolet scattering agent is not particularly limited, and specific examples thereof include metal oxides in fine particle form, such as zinc oxide, titanium oxide, iron oxide, cerium oxide, and tungsten oxide.

The ultraviolet scattering agent may be one which has not been surface-treated or one which has been subjected to various kinds of hydrophobic surface treatments. As the surface treatment agent, surface treatment agents commonly used in the field of cosmetics, for example, silicones such as polydimethylsiloxane and alkyl-modified silicone; alkoxysilanes such as octyltriethoxysilane; dextrin fatty acid esters such as dextrin palmitate; stearic acid and other fatty acids.

In the powdery solid cosmetic of the present invention, a pH adjuster, a humectant, a thickener, a dispersant, a stabilizer, a colorant, a preservative, an antioxidant, a perfume, and the like may be appropriately blended within a range in which the object of the present invention is achieved.

Among them, from the viewpoint of achieving sufficient impact resistance, it is preferable to avoid blending the elastic spherical powder as much as possible. Examples of the elastic spherical powder which is preferably avoided include nylon, polyethylene, polypropylene, polymethyl methacrylate (PMMA), silicone resin, silicone elastomer, and urethane resin. Among them, it is preferable not to blend a powder formed of polymethyl methacrylate, nylon, polyethylene, or the like.

< production method >

The method for producing the powdery solid cosmetic of the present invention is not particularly limited, and a known method can be used. For example, the following methods can be used: a "dry process" in which a powder component and an oily component are mixed without using a solvent and filled in a container to be molded; a "wet process" in which a powder component and an oil component are added to a volatile dispersion medium to form a slurry, and the slurry is filled in a container, and then a solvent is removed and solidified; a method of forming slurry into fine droplets by a mechanical shearing force, blowing a dry gas to the fine droplets to dry the droplets, and subjecting the obtained dry powder to ordinary dry molding (hereinafter, this method is sometimes referred to as a "W & D method" in the present specification for convenience). Details of the W & D production method are described in, for example, Japanese patent laid-open No. 2007-55990 and the like. Further improvement in usability such as bulkiness, smoothness and a feeling of adhesion can be expected by the W & D production method.

The solvent used for preparing the slurry in the wet process or the W & D process is not particularly limited, and examples thereof include purified water, cyclic silicone, ethanol, light liquid isoparaffin, lower alcohol, ether, LPG, fluorocarbon, N-methylpyrrolidone, fluoroalcohol, volatile linear silicone, and the like. Representative examples of the lower alcohol include ethanol and isopropanol. These solvents may be mixed in 1 kind or 2 or more kinds and used appropriately in different ways according to the characteristics of the compounding ingredients used.

The powdery solid cosmetic of the present invention may be in any form of powdery cosmetic. Specifically, it can be made into foundation, eye shadow, blush, toilet powder, perfume powder, baby toilet powder, pressed powder, deodorant powder, and powdery material.

Examples

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the amount of the compound is expressed as mass% based on the whole cosmetic. Before each example is specifically described, the evaluation method used will be described.

< impact resistance >

The powdery solid cosmetic was placed in a compact container for cosmetic, and dropped from a height of 50cm onto a metal plate with the cosmetic surface facing downward, and the number of times until the cosmetic broke was examined. For each cosmetic, the impact resistance was evaluated in terms of the number of times of dropping.

More than 5 times: more than 5 drops were tolerated.

3-4 times: the material is damaged when dropped 3-4 times.

The following are 2 times: the sheet is broken when dropped 1-2 times.

< usability >

The obtained powdery solid cosmetic was applied to the skin of 10 panelists, and the spreadability and the moist feeling during application were evaluated.

A: out of 10 subjects, 9 or more responded well.

B: more than 6 and less than 9 of 10 subjects responded well.

C: more than 4 and less than 6 of 10 subjects responded well.

D: fewer than 4 of 10 subjects responded well.

< examples 1 to 5 and comparative examples 1 to 2>

Solid cosmetic powders of examples 1 to 5 and comparative examples 1 to 2 shown in Table 1 below were prepared by a dry method. Specifically, powder components shown in the formulation of table 1 were mixed by a stirring mixer such as a henschel mixer, then an oil component was added and uniformly mixed, and the mixture was crushed by a pulverizer such as a palperizer and then filled into a container. And then molded by dry pressing.

The above items were evaluated for the obtained powdery solid cosmetic. The evaluation results are shown in table 1.

[ Table 1]

1 Shine Lube #500 (Shuihai alloy iron Co., Ltd.)

*2 PDM-150S(TOPY INDUSTRIES,LIMITED)

3 mica powder #800(Wakita Suiko Co., Ltd.)

*4 SILDEX L-51(AGC Si-Tech Co.,Ltd.)

*5 SATINIER M5(JGC Catalysts and Chemicals Ltd.)

As shown in table 1, when the ingredients (a) to (C) including mica (a), spherical anhydrous silicic acid (B), and boron nitride (C) were mixed in amounts satisfying all the conditions of 37 to 67 mass% for (a) + (B) + (C), (a) + (C) 35 to 53 mass%, and (B) + (C) 11 to 46 mass%, the results of good usability and impact resistance were obtained (examples 1 to 5).

On the other hand, when the total amount of (B) and (C) does not satisfy the above conditions, the workability and impact resistance are not sufficient (comparative examples 1 to 2).

< examples 6 to 9 and comparative examples 3 to 6>

Powdery solid cosmetics of examples 6 to 7 and comparative examples 3 to 4 described in the following table 2 and powdery solid cosmetics of examples 8 to 9 and comparative examples 5 to 6 described in the following table 3 were prepared by a dry method in the same manner as in example 1.

The above items were evaluated for the obtained powdery solid cosmetic. The evaluation results are shown in tables 2 and 3.

[ Table 2]

[ Table 3]

As shown in tables 2 and 3, when the total amount of the components (a) to (C) including (a) mica, (B) spherical anhydrous silicic acid and (C) boron nitride satisfies all the conditions of the above-mentioned predetermined amount of components, good results in both workability and impact resistance can be obtained (examples 6 to 9).

On the other hand, when the total amount of (A) and (C) does not satisfy the above-mentioned conditions, the results of insufficient workability and impact resistance were obtained (comparative examples 3 to 6).

< examples 10 to 11 and comparative examples 7 to 8>

Powdery solid cosmetics of examples 10 to 11 and comparative examples 7 to 8 shown 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 powdery solid cosmetic. The evaluation results are shown in Table 4.

[ Table 4]

As shown in Table 4, when the total amount of the components (A) to (C) including (A) mica, (B) spherical anhydrous silicic acid and (C) boron nitride satisfies the above-mentioned predetermined blending amount, the results of good workability and impact resistance were obtained (examples 10 to 11).

On the other hand, when the total amount of (B) and (C) does not satisfy the above-mentioned condition, and when the total amount of (A) and (B) and (C) does not satisfy the above-mentioned condition, the results of insufficient usability and impact resistance were obtained (comparative examples 7 to 8).

< example 12 and comparative example 9>

Powdery solid cosmetics of example 12 and comparative example 9 shown 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 powdery solid cosmetic. The evaluation results are shown in Table 5.

[ Table 5]

11 Nylon SP500(Toray Industries, Inc.)

*12 Techpolymer MBP-8HP(Sekisui Kasei Co.,Ltd.)

13 Matsumoto Microsphere M-330 (Songban oil & fat pharmaceutical Co., Ltd.)

As shown in table 5, when an elastic spherical powder, which has been widely used for improving the usability, such as a nylon powder and a methyl methacrylate crosslinked polymer powder, was blended without blending (B) spherical anhydrous silicic acid and (C) boron nitride, the result of poor impact resistance was obtained although the usability was excellent (comparative example 9).

On the other hand, when the composition contains (a) mica, (B) spherical anhydrous silicic acid, and (C) boron nitride, and the amounts of the components (a) to (C) satisfy all the above-described predetermined conditions of the amounts of the components, the composition has the same handling properties as in comparative example 9 in which the elastic spherical powder is blended, and also has good results in terms of impact resistance (example 12).

The following examples illustrate the formulation of the cosmetic of the present invention. It goes without saying that the invention is not limited in any way by these formulation examples, but only by the patent claims. The total amount of the components is expressed as mass% of the total cosmetic.

Formulation example 1: foundation make-up

Claims

1. A powdery solid cosmetic comprising the following components (A) to (C):

(A) mica, mica,

(B) Spherical anhydrous silicic acid, and

(C) the boron nitride is added into the reaction kettle,

the blending amounts of the components (A) to (C) satisfy:

(A) 37 to 67 mass% of +(B) + (C),

(A) 35 to 53% by mass of +(C), and

(B) and (C) 11 to 46% by mass.

2. The powdery solid cosmetic according to claim 1, wherein the ingredient (B) comprises:

(b-ii) a spherical anhydrous silicic acid having an oil absorption of 100 to 200ml/100 g.

3. The powdery solid cosmetic according to claim 2, wherein,

the mixing mass ratio of (b-i) spherical anhydrous silicic acid to (b-ii) spherical anhydrous silicic acid ((b-i): (b-ii)) was 0.1: 20-20: 0.1.

4. the powdery solid cosmetic according to any one of claims 1 to 3, which does not contain polymethyl methacrylate powder, nylon powder, polyethylene powder.