Solid powder cosmetic

Abstract

To provide solid powder cosmetics that have a smooth feel, show reduced shininess and whiteness, and deliver a three-dimensional glossy finish.SOLUTION: Solid powder cosmetics contain following components (A), (B) and (C): (A) synthetic mica, (B) spherical inorganic powder, and (C) oil solution that is liquid at 25°C. The component (A) includes at least (A1) synthetic mica with a particle size of 5-29 μm and (A2) synthetic mica with a particle size of 30-60 μm. The mass ratio of the component (A1) to the component (A2), (A1) / (A2), is 2-20.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a solid powder cosmetic preparation. [Background technology]

[0002] Solid powder cosmetics are produced by mixing oily ingredients with powder and then pulverizing and compressing the mixture to form a solid powder. Studies have been conducted to improve the feel of the product when applied and to obtain a glossy finish. For example, Patent Document 1 describes that a solid powder cosmetic obtained by pressure molding a powder cosmetic containing plate-shaped powder with a specific aspect ratio while irradiating it with ultrasonic waves has excellent gloss, usability, and stability on the cosmetic surface and coating film. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-161451 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, solid powder cosmetics containing synthetic mica as a plate-like powder have the problem of leaving a whitish cast or glaring appearance in the finished product. [Means for solving the problem]

[0005] The present inventors have discovered that by using two or more types of synthetic mica having specific particle sizes in combination, controlling the particle size distribution of the synthetic mica, and using a spherical inorganic powder in combination, it is possible to obtain a solid powder cosmetic that has a smooth feel when used, suppresses glare and whitishness, and provides a three-dimensional, lustrous finish.

[0006] The present invention comprises the following components (A), (B) and (C): (A) synthetic mica, (B) Spherical inorganic powder, (C) Oil that is liquid at 25℃ The present invention relates to a solid powder cosmetic preparation comprising: component (A) containing at least (A1) synthetic mica having a particle size of 5 to 29 μm and (A2) synthetic mica having a particle size of 30 to 60 μm; and a mass ratio of component (A1) to component (A2), (A1) / (A2), is 2 to 20.

[0007] The present invention also relates to a composition comprising the following components (A), (B) and (C): (A) synthetic mica, (B) Spherical inorganic powder, (C) Oil that is liquid at 25℃ The present invention relates to a solid powder cosmetic preparation obtained by adding component (A1) to component (A2) so that the mass ratio (A1) / (A2) of component (A1) to component (A2) is 2 to 20, wherein component (A1) comprises at least (A1) synthetic mica having a particle diameter of 5 to 29 μm and (A2) synthetic mica having a particle diameter of 30 to 60 μm. Effect of the Invention

[0008] The solid powder cosmetic of the present invention has a smooth feel when used, is free of any glare or whitish feeling, and provides a three-dimensional, glossy finish. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The synthetic mica of component (A) is a type commonly used in cosmetics, and synthetic phlogopite, synthetic ferric phlogopite, etc. can be used. The synthetic mica of component (A) may be used as is, or may be subjected to a hydrophobic treatment by a conventional method before use. The hydrophobic treatment is not limited as long as it is a treatment that is applied to ordinary cosmetic powders, and examples thereof include silicone treatment, fatty acid treatment, lauroyl lysine treatment, lecithin treatment, amino acid treatment such as N-acyl amino acid treatment, metal soap treatment, etc. Among these, silicone treatment is preferred.

[0010] Component (A) contains at least (A1) synthetic mica having a particle size of 5 to 29 μm and (A2) synthetic mica having a particle size of 30 to 60 μm. The synthetic mica having a particle size of 5 to 29 μm as component (A1) suppresses glare and excels in a three-dimensional glossy finish. Furthermore, from the viewpoint of excellence in a three-dimensional glossy finish, it is preferable to include (A11) synthetic mica having a particle size of 5 to 14 μm and (A12) synthetic mica having a particle size of 15 to 29 μm, and the mass ratio of component (A11) to component (A12), (A11) / (A12), is preferably 0.6 to 3, more preferably 0.9 to 2, and even more preferably 1 to 1.5. The aspect ratio of component (A1) is preferably from 20 to 90, and more preferably from 40 to 80, from the viewpoint of suppressing glare and achieving a three-dimensional, glossy finish. Here, the particle size is a value measured using a laser diffraction scattering type particle size distribution analyzer (Seishin Enterprise Co., Ltd., LMS-350) with ethanol as a dispersion medium. The volume average particle size is the average particle size based on volume, and is the 50% median diameter. The average particle thickness is a value obtained by measuring using an electron microscope and dividing the total value by the number of particles measured. The aspect ratio is a value obtained by dividing the particle size by the average particle thickness. From the viewpoint of obtaining a three-dimensional, glossy finish, the content of component (A1) is preferably from 5 to 40 mass % of the total composition, more preferably from 10 to 37 mass %, and even more preferably from 15 to 34 mass %.

[0011] Component (A2) synthetic mica with a particle size of 30 to 60 μm suppresses whitishness and excels in creating a three-dimensional, glossy finish. The aspect ratio of component (A2) is preferably from 40 to 120, and more preferably from 60 to 100, from the viewpoint of suppressing whitishness and obtaining a three-dimensional, glossy finish. From the viewpoint of suppressing whitishness and obtaining a three-dimensional, glossy finish, the content of component (A2) is preferably 1 to 20 mass % of the total composition, more preferably 2 to 15 mass %, and even more preferably 2 to 9 mass %.

[0012] The mass ratio (A1) / (A2) of the component (A1) to the component (A2) is from 2 to 20, preferably from 2 to 15, and more preferably from 2 to 14, from the viewpoint of obtaining a three-dimensional, glossy finish. Component (A) contains at least (A1) synthetic mica having a particle size of 5 to 29 μm and (A2) synthetic mica having a particle size of 30 to 60 μm, and is added so that the mass ratio of component (A1) to component (A2), (A1) / (A2), is 2 to 20.

[0013] From the viewpoint of obtaining a glossy finish, the content of component (A) is preferably from 6 to 60 mass % of the total composition, more preferably from 12 to 52 mass %, and even more preferably from 17 to 43 mass %.

[0014] In the spherical inorganic powder of component (B), the spherical shape includes a perfect sphere, an approximately spherical shape, and a spheroid, and may be a spherical powder having an uneven surface. The spherical inorganic powder of component (B) is one that is commonly used in cosmetics, such as silica, calcium silicate, magnesium silicate, etc., and it is preferable that the powder contains silica from the viewpoint of obtaining a smooth feel and a three-dimensional, glossy finish. The spherical inorganic powder of component (B) may be hydrophobized in the same manner as component (A), and silicone treatment is preferred.

[0015] The spherical inorganic powder of component (B) preferably has a volume average particle size of 3 to 15 μm, more preferably 4 to 10 μm, from the viewpoint of obtaining a finish with excellent dryness and a three-dimensional gloss. Here, the average particle size is a value measured using ethanol as a dispersion medium with a laser diffraction scattering type particle size distribution analyzer (LMS-350, manufactured by Seishin Enterprise Co., Ltd.) The volume average particle size is the average particle size based on volume, and is the 50% median size.

[0016] The specific surface area of ​​component (B) is 1 to 400 m 2 / g, and 2 to 350 m 2 / g is more preferable, and at least 30 to 350 m 2It is more preferable that the powder contains spherical inorganic powder in an amount of 1 / g. Here, the specific surface area refers to the surface area per unit mass, and in the present invention, it is measured by the BET method (N2).

[0017] Component (B) can be used alone or in combination of two or more kinds. From the viewpoint of obtaining an excellent smooth feeling and a three-dimensional glossy finish, the content is preferably 4 to 20 mass % of the total composition, more preferably 5 to 16 mass %, and even more preferably 6 to 13 mass %.

[0018] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 1 to 12, more preferably 1.5 to 10, and even more preferably 2 to 7, from the viewpoints of achieving an excellent smooth feel, suppressing glare and whitishness, and obtaining a three-dimensional, glossy finish.

[0019] Component (C) is an oil that is liquid at 25° C. Liquid means that it has fluidity, and includes a paste state. The oil agent of component (C) may be any oil agent that is commonly used in cosmetics, and examples thereof include hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols.

[0020] More specifically, examples of the hydrocarbon oil include straight-chain or branched-chain hydrocarbon oils such as squalane, vegetable squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, and petrolatum.

[0021] Ester oils include monoester oils, diester oils, triester oils and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic or dicarboxylic acids having 2 to 24 carbon atoms. Specific examples include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, and the like. Examples of suitable oleic acid esters include 2-hexyldecyl palmitate, butyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, alkyl benzoate (C12 to C15), and octyldodecyl 12-stearoyl stearate.

[0022] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms and difatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monomyristate monoisostearate, glycerin di-2-heptylundecanoate, di-2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, and di-2-ethylhexyl sebacate.

[0023] Triester oils include tri-fatty acid esters of trivalent or higher polyhydric alcohols, and specific examples include glyceryl trimyristate, glyceryl triisopalmitate, glyceryl tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric)glyceryl, trioleate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, olive oil, and jojoba oil.

[0024] Examples of tetraester oils include tetra fatty acid esters of polyhydric alcohols having 4 or more valences, and specific examples thereof include pentaerythritol tetra(behenic acid / benzoic acid / ethylhexanoic acid), pentaerythritol tetraethylhexanoate, pentaerythritol tetraoctanoate, and pentaerythritol tetra-2-ethylhexanoate.

[0025] The ether oils include dialkyl ethers, specifically, dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, and the like.

[0026] Examples of silicone oils include crosslinked methylpolysiloxane, network methylpolysiloxane, dimethylpolysiloxane, methyltrimethicone, dimethylcyclopolysiloxane, methylphenylpolysiloxanes such as diphenylsiloxyphenyltrimethicone, and higher alcohol-modified organopolysiloxanes. Examples of volatile silicone oils include linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), and dimethylpolysiloxane (2cs); branched siloxanes such as methyltrimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0027] Examples of higher alcohols include those having a straight or branched alkyl or alkenyl group having 10 to 24 carbon atoms, such as lauryl alcohol, myristyl alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyldodecanol, and oleyl alcohol.

[0028] From the viewpoints of excellent adhesion to applicators and skin and suppression of white cast, component (C) preferably contains at least a hydrocarbon oil and an ester oil, and more preferably contains at least a hydrocarbon oil and a monoester oil.

[0029] Component (C) can be used alone or in combination of two or more kinds. From the viewpoints of excellent adhesion to applicators and skin and suppression of white cast, the content is preferably 2 to 20 mass % of the total composition, more preferably 3 to 18 mass %, and even more preferably 5 to 15 mass %.

[0030] The solid powder cosmetic of the present invention may further contain (D) a plate-like extender pigment other than component (A), which makes it possible to improve adhesion to applicators and skin and reduce glare. The plate-like extender pigment of component (D) is one that is commonly used in cosmetics, such as silicic acid, silicic anhydride, magnesium silicate, talc, sericite, boron nitride, glass flakes, kaolin, bismuth oxychloride, and barium sulfate. Among these, from the viewpoint of excellent finish, it is preferable to contain one or more selected from talc and barium sulfate. The plate-like extender pigment of component (D) may be subjected to a hydrophobic treatment in the same manner as component (A).

[0031] Component (D) can be used alone or in combination of two or more kinds. From the viewpoints of excellent adhesion to applicators and skin and suppression of a glaring feeling, the content is preferably 10 to 70 mass% of the total composition, more preferably 25 to 60 mass%, and even more preferably 30 to 55 mass%.

[0032] The solid powder cosmetic preparation of the present invention may further contain a coloring pigment and a luster pigment. Examples of color pigments include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, black iron oxide, ultramarine, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; synthetic organic pigments such as Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue 404; and natural organic pigments such as β-carotene, caramel, and paprika color. The color pigments can be used alone or in combination of two or more kinds. From the viewpoints of improving aesthetics and enhancing skin covering power, the content is preferably 0.01 to 20 mass % of the total composition, more preferably 0.1 to 15 mass %, and even more preferably 1 to 10 mass %.

[0033] Luster pigments that can be used include plate-like powders such as mica, synthetic phlogopite, glass, silica, alumina, etc., the surface of which is coated with colorants such as titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, organic pigments, etc., as well as film rolls cut into any shape such as polyethylene terephthalate-polymethyl methacrylate laminated powder, polyethylene terephthalate-aluminum vapor-deposited powder, and polyethylene terephthalate-gold vapor-deposited laminated powder. Further, organic powders such as polyethylene powder, polypropylene powder, polymethyl methacrylate powder, nylon powder, polytetrafluoroethylene powder, silicone powder, silicone rubber powder, silk powder, urethane powder, cellulose powder, starch powder, and polyethylene fluoride; inorganic powders such as silica, magnesium carbonate, and calcium carbonate; acylated lysine powders such as lauroyl lysine; and metal soap powders which are higher fatty acid metal salts can be used. The luster pigments can be used alone or in combination of two or more. From the viewpoint of enhancing the pearly feel, the content is preferably 0.01 to 15 mass % of the total composition, more preferably 0.1 to 8 mass %, and even more preferably 0.5 to 5 mass %.

[0034] There are no limitations on the size, shape, etc. of these powders, and they can be used as they are, or can be subjected to a hydrophobic treatment in the same manner as component (A) before use.

[0035] The solid powder cosmetic preparation of the present invention may further contain a nonionic surfactant. Examples of nonionic surfactants include those used in ordinary cosmetics, such as sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ether, polyoxyethylene phytosterose ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, alkyl glyceryl ether modified silicones, polyoxyalkylene modified silicones, polyoxyalkylene / alkyl co-modified silicones, polyoxyalkylene / fluoroalkyl co-modified silicones, and the like. Among these, from the viewpoints of excellent usability and suppression of white cast, sorbitan fatty acid esters are preferred, and sorbitan monoisostearate is more preferred.

[0036] The nonionic surfactants can be used alone or in combination of two or more. From the viewpoints of providing an excellent feeling in use and suppressing white cast, the content is preferably 0.001 to 5 mass % of the total composition, more preferably 0.005 to 1 mass %, and even more preferably 0.01 to 0.5 mass %.

[0037] The solid powder cosmetic of the present invention may contain, in addition to the above-mentioned components, components used in ordinary cosmetics, such as oily components other than component (C), powders other than those mentioned above, surfactants other than those mentioned above, preservatives, antioxidants, colorants, pH adjusters, fragrances, ultraviolet absorbers, moisturizers, blood circulation promoters, cooling agents, antiperspirants, germicides, skin activators, etc.

[0038] The solid powder cosmetic of the present invention can be produced by a conventional method. For example, after all the powder components including components (A) and (B) are mixed and ground, the oil phase components including component (C) are added and mixed, the resulting mixture is further ground in a grinder, and the ground product is filled into a container and molded under a molding pressure of 1000 to 2500 kgf to obtain a solid powder cosmetic.

[0039] The solid powder cosmetic composition of the present invention is suitable as a makeup cosmetic composition such as pressed powder, powder foundation, blusher, eye shadow, etc. EXAMPLES

[0040] Examples 1-7, Comparative Examples 1-3 A solid powder cosmetic (pressed powder) was produced with the composition shown in Table 1, and was evaluated for its smooth feel when used, three-dimensional shine, lack of glare, and lack of whitish appearance. The results are also shown in Table 1.

[0041] (Manufacturing method) After all the powder phase ingredients including ingredients (A) and (B) were mixed and ground, the oil phase ingredients including ingredient (C) were added and mixed, and the resulting mixture was further ground in a grinder. The ground product thus obtained was filled into a container and molded with a filling amount of 10.0 g and a molding pressure of 1500 kg to obtain a solid powder cosmetic (pressed powder).

[0042] (Evaluation method) (1) Smooth feel when used: A panel of five experts evaluated the smooth feel of each pressed powder cosmetic product when it was applied to the skin, using the following criteria. The results were expressed as the total score given by the five experts. 5;Very smooth. 4;Smooth. 3; Somewhat smooth. 2;It's not very smooth. 1;It's not smooth.

[0043] (2) Three-dimensional shine: Five expert panelists evaluated the three-dimensional shine of the finished product after applying each solid powder cosmetic product (pressed powder) to the skin, using the following criteria. The results were shown as the total score given by the five panelists. 5;Has a very three-dimensional shine. 4;Has a three-dimensional shine. 3;Has a slight three-dimensional shine. 2;It doesn't have much three-dimensional shine. 1: It lacks a three-dimensional shine.

[0044] (3) Lack of glare: Five expert panelists evaluated the lack of shine of the finished product after applying each solid powder cosmetic product (pressed powder) to the skin, using the following criteria. The results were shown as the total score of the five panelists. 5;It's too bright and I can't see. 4;It doesn't look too shiny. 3;It looks a bit glaring. 2;It appears to be glaring. 1;It looks quite glaring.

[0045] (4) Does not look whitish: A panel of five experts evaluated the lack of whitishness of the finished product after applying each solid powder cosmetic product (pressed powder) to the skin, using the following criteria. The results were shown as the total score given by the five experts. 5;There is no whiteness at all. 4;Not whitish. 3;Not very white. 2; Slightly whitish. 1;It has a whitish hue.

[0046] [Table 1]

[0047] Example 8 In the same manner as in Examples 1 to 7, solid powder cosmetics (pressed powders) having the compositions shown in Table 2 were produced. The obtained solid powder cosmetic has a smooth feel when used, and while suppressing any glare or whitish feeling, it provides a three-dimensional, glossy finish.

[0048] [Table 2]

Claims

1. The following components (A), (B), and (C): (A) synthetic mica, (B) Spherical inorganic powder, (C) An oil that is liquid at 25°C wherein component (A) comprises at least (A1) synthetic mica having a particle size of 5 to 29 μm and (A2) synthetic mica having a particle size of 30 to 60 μm, and the mass ratio of component (A1) to component (A2), (A1) / (A2), is 2 to 20.

2. 2. The solid powder cosmetic according to claim 1, wherein the mass ratio (A) / (B) of component (A) to component (B) is 1 to 12.

3. 3. The solid powder cosmetic preparation according to claim 1, wherein the content of component (A) is 6 to 60% by mass, the content of component (B) is 4 to 20% by mass, and the content of component (C) is 2 to 20% by mass.

4. 3. The solid powder cosmetic preparation according to claim 1, wherein the content of component (A1) is 5 to 40% by mass, and the content of component (A2) is 1 to 20% by mass.

5. 3. The solid powder cosmetic preparation according to claim 1, wherein component (B) contains at least silica.

6. The following components (A), (B), and (C): (A) synthetic mica, (B) Spherical inorganic powder, (C) An oil that is liquid at 25°C The solid powder cosmetic preparation is obtained by adding component (A) such that the mass ratio (A1) / (A2) of component (A1) to component (A2) is 2 to 20, wherein component (A) contains at least (A1) synthetic mica having a particle size of 5 to 29 μm and (A2) synthetic mica having a particle size of 30 to 60 μm.