JP2009274991A - Solid powder cosmetic product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid powder cosmetic product compounded with elastic powder, having excellent impact resistance, easily removable with a small utensil such as a mat and smoothly extendable and spreadable on the skin. <P>SOLUTION: The solid powder cosmetic product contains (a) 20-50 mass% platy powder of calcium sulfate dihydrate, (b) 0.5-7 mass% elastic powder and (c) 2-10 mass% liquid oil at a (b)/(a) mass ratio of 0.02-0.20. The platy powder of calcium sulfate dihydrate preferably has a major diameter of 30-100 μm, a minor diameter of 20-50 μm and a thickness of 1-3 μm, and the elastic powder preferably has an average particle diameter of 3-35 μm. The cosmetic product preferably further contains (d) 0.1-1.0 mass% solid oil powder in addition to the components (a) to (c). The solid oil powder (d) preferably has an average particle diameter of 0.05-20 μm and a melting point of 85-125°C. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a solid powder cosmetic comprising a calcium sulfate dihydrate plate-like powder and an elastic powder, which can be easily taken into props such as sponges and mats when used, and has a smooth spread and finish. The present invention relates to a solid powder cosmetic excellent in moldability and impact resistance.

  Solid powder cosmetics are generally formed by filling powder-type cosmetic base materials such as color pigments, extender pigments, and luster pigments in a dish-like container made of metal such as aluminum or resin, and then forming the molded product into a compact container. It is a cosmetic used by being attached to the skin, and since it has good portability, it is a dosage form widely used in makeup cosmetics such as foundations and eye shadows. And since solid powder cosmetics are carried in handbags etc., if the impact resistance of the molded product is poor, the molded product will crack or collapse, so the impact resistance is not at a guaranteed level. Don't be. In addition, since solid powder cosmetics are used by scraping the surface of the molded article with a prop and applying it to the skin, the degree of removal to the prop and the feeling of use when applied to the skin are important requirements for the product. Quality has become. On the other hand, it is known that solid powder cosmetics are blended with elastic powders typified by silicone elastomer and polyurethane to improve usability and exert a pore concealing effect (Patent Document 1).

  Solid powder cosmetics are usually manufactured by a method (so-called press molding method) in which an oil agent is added to a powder-based cosmetic base material, filled into a dish-like container, and this is compression-molded (so-called press molding method). Depending on the blending components and compression molding conditions, problems of molding defects such as reduced impact resistance, peeling and chipping occur. Solid powder cosmetics containing the above-mentioned elastic powder tend to be inferior in impact resistance due to poor molding because the elastic powder is difficult to be compression-molded. In order to increase the impact resistance of solid powder cosmetics, methods using solid oil powder as a blending component are known (Patent Documents 2 and 3), but a method of improving impact resistance by blending solid oil powder. However, in order to obtain sufficient impact resistance, it is necessary to increase the amount of solid oil powder or reduce the amount of elastic powder, resulting in the smoothness of the spread of cosmetics. There are problems that significantly impair the feeling of use. In addition, as another method for improving impact resistance, a method of blending a large amount of oil is known, but cosmetics blended with a large amount of oil add to the feeling of use at the time of application, and the cosmetic spreads. There is a problem that the so-called caking that is worsened or the cosmetics are tightened with time and the usability is deteriorated.

Also, as a method of filling and molding solid powder cosmetics, apart from the press molding method, the powder-based cosmetic base material is mixed with a solvent and slurried, then filled into a container such as a metal plate or a resin plate, and the solvent is added. A method of drying and removing is used. And about the solid powder cosmetic by this shaping | molding method, the technique (patent document 4) which improves impact resistance by mix | blending the elastic powder and the extender surface-treated with the cationic surfactant, and elasticity A technique (Patent Document 5) has been developed that combines impact resistance and good usability by blending powder and spherical polyolefin resin powder.
JP-A-8-319215 Japanese Patent Laid-Open No. 4-18011 JP 2005-272427 A JP 2006-199644 A JP 2006-169207 A

  An object of the present invention is to provide a solid powder cosmetic that is excellent in impact resistance, is excellent in mats and other props, and is excellent in smooth spread and spread with respect to a solid powder cosmetic containing an elastic powder. To do.

  As a result of intensive studies, the present inventors have found that solid powder cosmetics containing elastic powders can be easily taken into props such as mats by blending plate powder of calcium sulfate dihydrate. The present invention was completed by finding that a solid powder cosmetic material having excellent elongation spread, good moldability and excellent impact resistance was obtained.

That is, the present invention includes the following components (a) to (c);
(A) Calcium sulfate dihydrate plate-like powder 20-50% by mass
(B) 0.5-7 mass% of elastic powder
(C) Liquid oil 2-10 mass%
And a component (a) and a component (b) at a mass ratio of component (b) / component (a) = 0.02 to 0.20. is there.

  In the present invention, the plate-like powder of calcium sulfate dihydrate is preferably a plate-like powder having a major axis of 30 to 100 μm, a minor axis of 20 to 50 μm, and a thickness of 1 to 3 μm. The elastic powder is preferably an elastic powder having an average particle diameter of 3 to 35 μm. Furthermore, in the present invention, it is preferable that the components (a) to (c) further contain 0.1 to 1.0% by mass of the component (d) solid oil powder. This component (d) solid oil powder is preferably a solid oil powder having an average particle size of 0.05 to 20 μm. The component (d) solid oil powder is preferably a solid oil powder having a melting point of 85 to 125 ° C.

  In the solid powder cosmetic of the present invention, the formability of the solid powder cosmetic blended with the elastic powder is improved because the powdered calcium sulfate dihydrate is blended, so that the impact resistance is excellent. In addition, the solid powder cosmetic of the present invention can be easily taken into props such as sponges and mats during use due to the presence of elastic powder and plate powder of calcium sulfate dihydrate. Are better.

  The calcium sulfate dihydrate plate-like powder of component (a) used in the present invention is a powder (powder) composed of plate-like particles of calcium sulfate dihydrate. Calcium sulfate dihydrate plate powder is excellent in moldability, especially compression moldability, so it can be easily taken into props and has good impact resistance while maintaining a smooth spread. A solid powder cosmetic can be obtained. The range of the size of the particles constituting the calcium sulfate dihydrate salt powder is 30 to 100 μm in the major axis and 20 to 50 μm in the minor axis from the viewpoint of improving moldability and not impairing the properties of the cosmetic. A thickness of 1 to 3 μm is preferable. More preferably, the major axis is 30 to 70 μm, the minor axis is 20 to 40 μm, and the thickness is 1 to 2 μm.

  A method of synthesizing a plate-like calcium sulfate powder having a large particle diameter using calcium carbonate and sulfuric acid is used for producing the plate-like powder of the calcium sulfate dihydrate of component (a). For example, columnar or plate-like half-water plate-like calcium sulfate of 30 to 40 μm can be synthesized by a method in which calcium carbonate and a sulfuric acid solution are gradually dropped at room temperature. In addition, a plate-like calcium dihydrate sulfate powder having a major axis of 30 μm and a minor axis of 10 to 15 μm is synthesized by suspending calcium carbonate in water and gradually dropping a sulfuric acid solution into the suspension at room temperature. it can. Furthermore, when the reaction temperature at the time of synthesis is increased to 70 ° C., the major axis increases to 100 μm, and when 0.1 to 1.0% aluminum sulfate is added at the time of synthesis, the particle size increases as the addition amount increases. However, it can be increased to 150 to 300 μm.

  The compounding amount of the calcium sulfate dihydrate salt powder of component (a) in the solid powder cosmetic of the present invention is 20 to 50% by mass (hereinafter simply referred to as “%”) of the solid powder cosmetic. Preferably, 25 to 45% is particularly preferable. When the component (a) is blended in this range, a solid powder cosmetic with good take-off and good moldability can be obtained while maintaining a smooth spread. In addition, when the blending amount is less than 20%, the impact resistance is inferior due to a decrease in moldability, and when the blending amount is 50% or more, there is no room for blending other components such as other colorants. Cannot be obtained.

  The elastic powder of the component (b) used in the present invention improves the usability such as how to take the solid powder cosmetics into a prop, improves the feeling of use such as smooth expansion and spreading, and improved feel when applied. In addition, it is formulated for focusing effects such as pore concealment. As the elastic powder of the component (b) used in the present invention, an elastic powder blended in cosmetics is usually used. This elastic powder is preferably a powder having a hardness (JIS hardness) of 25 to 80 in a spring type hardness test described in JIS K6301 and more preferably a powder having a hardness of 30 to 50. Such powders are specifically silicone resin powder, polyurethane powder, polyalkyl acrylate powder, nylon powder, etc., and commercially available products include Trefill E505, E506, E701 (all are Toray Dow Corning). Silicone), Techpolymer ACX-806C (Sekisui Plastics Co., Ltd.), Matsumoto Microsphere S100, S101, S102 (all Matsumoto Yushi Seiyaku Co., Ltd.), KSP-100, KSP-101, KSP- 102 (all manufactured by Shin-Etsu Chemical Co., Ltd.). These can be used by appropriately selecting one kind or two or more kinds or combining them. Further, the elastic powder of the present invention preferably has an average particle diameter of 3 to 35 μm, and if it is within this range, an excellent effect can be obtained particularly in the smoothness at the time of coating.

  The compounding quantity of the component (b) to the solid powder cosmetic of this invention is 0.5-7% of a solid powder cosmetic, Preferably it is 3-5%. If it is this range, the thing excellent in the effect which improves usability, such as the smoothness at the time of application | coating, will be obtained. When the blending amount of component (b) is less than 0.5%, the smooth feel at the time of application cannot be sufficiently exhibited, and when it exceeds 7%, sufficient impact resistance cannot be obtained.

  The plate-like powder of component (a) calcium sulfate dihydrate used in the present invention improves the moldability of a solid powder cosmetic containing the component (b) elastic powder having inferior moldability. For this reason, the blending ratio of the calcium sulfate dihydrate plate powder of component (a) and the elastic powder of component (b) is also important. The blending ratio of both is mass ratio, and component (b) / component (a) = 0.02 to 0.20. If this ratio is less than 0.02, the smooth feel at the time of coating cannot be sufficiently exhibited, and if it exceeds 0.20, the impact resistance is inferior due to a decrease in moldability.

  The liquid oil of component (c) used in the present invention is a liquid oil at room temperature, and acts as a feeling modifier, a binder between powders when molded, and an adhesion improver to the skin. This oil includes, for example, hydrocarbons such as liquid paraffin and squalane, glyceryl tribehenate, pentaerythritol ester of rosin acid, jojoba oil, cetyl isooctanoate, isopropyl myristate, glyceryl trioctanoate, and diglyceryl triisostearate. Fats and oils such as esters, olive oil, castor oil, mink oil, lanolin derivatives such as lanolin fatty acid isopropyl and lanolin alcohol, amino acid derivatives such as N-lauroyl-L-glutamate di (cholesteryl, behenyl, octyldodecyl), dimethyl Silicones such as polysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, decamethylpolysiloxane, perfluoropolyether, perfluorodecane, perfluorooctane, etc. A fluorine-based oil, etc. These can be used in combination of two or more.

  The compounding quantity of the component (c) in the solid powder cosmetic of this invention is 2-15% of a solid powder cosmetic, Preferably it is 5-13%. When component (c) is blended within this range, a solid powder cosmetic with good moldability and good moldability can be obtained. When the content is less than 2%, the effect as a feel modifier, a binder between powders, and an adhesion improver to the skin is inferior. When the content exceeds 15%, smoothness of sufficient elongation and spread cannot be obtained, and caking (The phenomenon that the surface of the solid powder cosmetic becomes hard and cannot be removed with props) occurs.

  By mix | blending a component (d) solid oil powder with the solid powder cosmetics of this invention, compression moldability can improve more and drop strength can be improved more especially. The solid oil powder of component (d) used in the present invention is a powder that functions as a powder binder by fusing particles together when compression molded. The solid oil powder is preferably a solid oil powder having a melting point of 85 to 125 ° C. In particular, a powder obtained by pulverizing a hydrocarbon wax having a melting point of 85 to 125 ° C. is preferable. Examples of hydrocarbon waxes having a melting point of 85 to 125 ° C. include plant-derived waxes such as polyethylene wax, ethylene / propylene copolymer, paraffin wax, Fischer-Tropsch wax, microcrystalline wax, and carnauba wax. One kind or two or more kinds can be used.

  In order to pulverize these hydrocarbon waxes, a mechanical pulverization method or a chemical pulverization method, which is a known pulverization method, or a pulverization method in which mechanical pulverization and chemical pulverization are combined can be used. Specifically, examples of the mechanical pulverization method include a jet mill, a hammer mill, a pin mill, a ball mill, and a bead mill. As the chemical pulverization method, a solution obtained by dissolving the hydrocarbon wax in an appropriate solvent is spray-dried, a method in which the hydrocarbon wax is phase-separated from the solution, or the solution is emulsified with water and micronized. The method of drying as an emulsion is mentioned. After pulverization, it is possible to classify the hydrocarbon wax as needed until the desired average particle size is obtained.

  The average particle size of the solid oil powder of component (d) is preferably 0.05 to 20 μm, more preferably 3 to 5 μm. By allowing the solid oil powder having an average particle diameter in this range to exist in this state, a solid powder cosmetic having particularly good moldability and particularly excellent impact resistance can be obtained. The shape of the solid oil powder of component (d) is preferably non-spherical or amorphous. In the spherical form, the effect of improving the moldability of the solid powder cosmetic is low, and in the non-spherical form, the effects of improving the moldability and strength of the solid powder cosmetic are excellent. Commercially available products such as PRESS-AID-XP (average particle size 3 μm), PRESS-AID-SP (average particle size 6 μm) (both manufactured by PRESPERSE) are used as the solid oil powder of component (d). Further, non-spherical solid oil powder produced by the method described in JP-A-2000-72624 is also used.

  The blending amount of the component (d) solid oil powder in the solid powder cosmetic of the present invention is preferably 0.05 to 1.0%, more preferably 0.1 to 0.5% of the solid powder cosmetic. If solid fat powder is mix | blended in this range, the solid powder cosmetics which can be taken off and are excellent in impact resistance will be obtained.

  In addition to the above components, other powders can be blended in the solid powder cosmetic of the present invention. The powders that can be blended in the present invention are used for purposes such as colorants, masking agents (makeup effects), feel modifiers, excipients, UV screening agents, pearl agents, etc., and are used in ordinary cosmetics. It is not particularly limited by the shape of a plate, a sphere, a needle, etc., a particle shape such as a haze, a fine particle, a pigment class, a particle structure such as a porous or nonporous material, etc. And body powders, organic powders, pigment powders, and composite powders. Specifically, titanium oxide, black titanium oxide, conger, ultramarine, bengara, yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, silicic anhydride, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide , Chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, mica, synthetic mica, sericite, talc, kaolin, silicon carbide, barium sulfate, boron nitride and other inorganic powders, polymethyl Organic powders such as sesquioxane, polystyrene, acrylonitrile-methacrylic acid copolymer, vinylidene chloride-methacrylic acid copolymer, polyethylene, wool powder, silk powder, crystalline cellulose powder, N-acyl lysine powder, organic tar type Pigments, organic dyes Dye powders such as lake pigments, composite powders such as fine particle titanium oxide coated mica titanium, fine particle zinc oxide coated mica titanium, barium sulfate coated mica titanium, titanium oxide containing silicic acid, zinc oxide containing silicic acid anhydride, etc. 1 type or 2 types or more can be used from these. In addition, these powders may be used after being subjected to a surface treatment with a generally known treatment agent such as a fluorine compound, a silicone compound, or a surfactant.

  In addition to the above-mentioned components, the solid powder cosmetic of the present invention includes, as components used in normal cosmetics, oil agents (paste oil), surfactants, oil gelling agents, water-soluble polymers, trimethylsiloxysilicate. Oil-soluble film forming agents such as acids, ultraviolet absorbers, aqueous components, paraoxybenzoic acid derivatives, preservatives such as phenoxyethanol, vitamins, cosmetic ingredients, fragrances, etc. may be appropriately blended within a range not impairing the effects of the present invention. it can.

The paste oil that can be blended in the solid powder cosmetic of the present invention may be any paste oil as long as it is used in ordinary cosmetics. Examples include petroleum jelly, polyisobutylene, polybutene, and dipentaerythritol fatty acid ester. One or two or more of these can be used.

The surfactant that can be blended in the solid powder cosmetic of the present invention is used for the purpose of a dispersing agent, a feel control agent, and the like. Such surfactants include glycerin fatty acid esters and alkylene glycol adducts thereof, polyglycerin fatty acid esters and alkylene glycol adducts thereof, propylene glycol fatty acid esters and alkylene glycol adducts thereof, sorbitan fatty acid esters and alkylene glycol adducts thereof. , Fatty acid ester of sorbitol and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, polyoxyalkylene-modified silicone, polyoxyalkylene alkyl co-modified silicone and other nonionic surfactants, alkylbenzene sulfate, acid salt, dialkyl Sulfosuccinate, α-sulfonated fatty acid salt, alkyl sulfonate, α-olefin sulfone, acylmethyl taurate, N-methyl- N-alkyl taurine salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl phenyl ether phosphate, N-acyl amino acid salt, Anionic surfactants such as N-acyl-N-alkyl amino acid salts, cationic surfactants such as alkylamine salts, polyamines and alkanoylamine fatty acid derivatives, alkylammonium salts and alicyclic ammonium salts, and lecithin And amphoteric surfactants such as N, N-dimethyl-N-alkyl-N-carboxymethylammonium betaine, and the like. One or more of these can be used.

  The oil gelling agent that can be blended in the solid powder cosmetic of the present invention may be any one as long as it is used in ordinary cosmetics. For example, dextrin fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, 12-hydroxy A stearic acid, calcium stearate, etc. are mentioned, 1 type or 2 types or more can be used from these.

  The water-soluble polymer that can be blended in the solid powder cosmetic of the present invention is used for the purpose of improving adhesion to the skin, improving makeup sustainability, improving touch, and the like. Examples of such water-soluble polymers include cellulose derivatives such as methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, sodium alginate, carrageenan, quince seed gum, agar, gelatin, xanthan gum, locust bean gum, pectin , Natural polymers such as gellan gum, synthetic polymers such as polyvinyl alcohol, carboxyl vinyl polymer, alkyl-added carboxy vinyl polymer, polyacrylic acid soda, polymethacrylic acid soda, polyacrylic acid glycerin ester, polyvinylpyrrolidone, etc. 1 type or 2 types or more can be used from these.

  The ultraviolet absorber that can be blended in the solid powder cosmetic of the present invention is not particularly limited as long as it is usually used in cosmetics. Specifically, benzophenone series such as 2-hydroxy-4-methoxybenzophenone, 2,4,6-trianilino-p- (carbo-2′-ethylhexyl-1′-oxy) -1,3,5-triazine, Salicylic acid type such as 2-ethylhexyl salicylate, PABA type such as ethyl paradihydroxypropyl benzoate, dibenzoylmethane type such as 4-tert-4′-methoxydibenzoylmethane, and the like, one or more of these Can be used.

  The production method of the solid powder cosmetic of the present invention is not particularly limited, but the components (a), (b) and, if necessary, (d), and other powders are mixed, and the component (c) and Examples include a method of adding and mixing other components as necessary, uniformly dispersing the mixture, and filling and molding it into a metal or resin dish-like container. In addition, as a method of filling and molding the dish-shaped container, a compression molding (press molding) method is preferably used, but a slurry filling method using a solvent may be used.

  Examples of the solid powder cosmetic of the present invention include makeup cosmetics such as foundation, white powder, blusher, eye shadow, and eyebrow, and skin care cosmetics such as body powder and antiperspirant powder. In addition to the cake shape, the solid powder cosmetic of the present invention may be formed into a variety of three-dimensional shapes such as a dome shape, a spherical shape, a hemispherical shape, a conical shape, a pyramid shape, a diamond cut shape, and a stick shape. Can do.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. In addition, these do not limit this invention at all. The calcium sulfate dihydrate plate-like powder used in the examples and the calcium sulfate dihydrate amorphous powder used in the comparative examples were obtained by the following production methods.
(1) Manufacturing method of calcium sulfate dihydrate plate powder Sulfuric acid solution was gradually added dropwise at 40 ° C. while calcium carbonate was suspended in water, the major axis was 30-50 μm, the minor axis was 20-25 μm, and the thickness was A plate-like calcium dihydrate sulfate having a thickness of 1 to 3 μm was synthesized.
(2) Manufacturing method of amorphous powder of calcium sulfate dihydrate 84.3 parts by mass of calcium sulfate hemihydrate and 15.7% by mass of water are uniformly mixed with a Henschel mixer (manufactured by Mitsui Mining). React. The obtained reaction product was pulverized with a hammer mill and passed through a sieve (opening 150 μm) to obtain an amorphous powder of calcium sulfate dihydrate having a particle size of 5 to 100 μm.

Examples 1 to 8 and Comparative Examples 1 to 7: Foundations Foundations having compositions shown in Table 1 were prepared by the following method. The obtained foundation was evaluated for each item of “smooth extension and spread”, “impact resistance”, and “goodness to take out props”. Evaluation was performed by the following evaluation method and criteria. The results are also shown in Table 1.

Note 1: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)
Note 2: Techpolymer ACX-806C (manufactured by Sekisui Plastics)
Note 3: Nylon 12 SP500 (Toray Industries, Inc.)
Note 4: Matsumoto Microsphere M101 (Matsumoto Yushi Seiyaku Co., Ltd.)
Note 5: Amorphous solid oil powder produced by the following production method Spherical particles having an average particle diameter of 5 mm of Fischer-Tropsch wax having a melting point of 120 ° C. were pulverized by a mill to obtain a coarsely pulverized product. The average particle size of the coarsely pulverized product was measured with a laser diffraction particle size distribution measuring device, and as a result, it was 60 μm. Next, this coarsely pulverized product was further finely pulverized by a single track jet mill to obtain a solid oil powder having an average particle size of 3 μm. This solid oil powder was indefinite as a result of observing the particle shape with an electron microscope.

(Production method)
A: Components 15 to 19 are mixed.
B: Components 1 to 14 are uniformly dispersed with a Henschel mixer (Mitsui Mining Co., Ltd.).
C: A is added to B and mixed.
D: C is pulverized with a pulverizer.
E: D was filled in a resin dish and compression molded to obtain a foundation.

(Evaluation method 1) Sensory evaluation Twenty cosmetic evaluation panel members were asked to use the foundation for evaluation. Each item of “smooth extension and spread” and “goodness to take out props” will be evaluated according to the following evaluation criteria in 7 levels, with a score for each foundation, and the average score of all panels Was determined according to the following criteria.
[Evaluation criteria]
(Evaluation result): (Grade)
Very good: 6 points Good: 5 points Somewhat good: 4 points Normal: 3 points Somewhat bad: 2 points Bad: 1 point Very bad: 0 points
[Criteria]
(Average score): (Judgment)
5.0 or more: ◎ Very good 3.5 or more to less than 5.0: ○ Good 1.5 or more to less than 3.5: △ Defect Less than 1.5: × Very poor

(Evaluation Method 2) Impact Resistance Each of the foundations of Examples and Comparative Examples was prepared, and the resin plate was filled, and the resin plate was dropped freely from the height of 50 cm onto the acrylic plate in the upright direction. The surface condition of each of the foundations was observed, and a score was assigned according to the following evaluation criteria for each foundation, and an average score of n = 5 was calculated and determined according to the following four criteria.
[Evaluation criteria]
(Content): (Grade)
No change: 4
Slight cracking but no problem with usability: 3
Cracks and gaps: 2
There are large cracks and gaps: 1
[Criteria]
(Average score of n = 5): (Score)
3.5 or more: ◎
3.0 or more to less than 3.5: ○
2.0 or more and less than 3.0: △
Less than 2.0: ×

  As is clear from the results in Table 1, the foundations of Examples 1 to 8, which are the products of the present invention, have all of “smooth elongation and spread”, “impact resistance”, and “goodness to take out props”. It was a solid powder cosmetic excellent in items. On the other hand, Comparative Example 1 in which no elastic powder (spherical silicone powder) was blended, Comparative Example 4 in which inelastic powder (spherical nylon powder) was blended instead of elastic powder, and a large amount of liquid oil (liquid paraffin) was blended The foundation of Comparative Example 6 and Comparative Example 2 in which talc was blended instead of the plate-like powder of calcium sulfate dihydrate was inferior in smooth spread and ease of removal to props. Further, the foundation of Comparative Example 3 in which mica was blended instead of the plate-like powder of calcium sulfate dihydrate, and Comparative Example 5 in which a large amount of elastic powder (spherical silicone powder and spherical polyalkyl acrylate powder) was blended, It was inferior in impact resistance. Further, Comparative Example 7 in which an amorphous powder of calcium sulfate was used instead of the plate-like powder of calcium sulfate dihydrate was inferior in smooth expansion and ease of removal to props.

Example 9 White powder (component) (%)
1. Talc 20
2. Plate powder of calcium sulfate dihydrate 30
3. Spherical polystyrene 5
4). Synthetic hydrocarbon wax powder 0.5
5. Spherical nylon powder (Note 3) 3
6). Spherical polyalkyl acrylate powder (Note 2) 2
7). Bengala 0.1
8). Yellow iron oxide 1
9. Black iron oxide 0.1
10. Titanium oxide coated synthetic phlogopite 10
11. Methyl paraoxybenzoate 0.3
12 Sericite remaining amount 13. Dimethylpolysiloxane 4
14 Squalane 4
15. Perfluoropolyether 1

(Production method)
A: Components 13 to 15 are mixed.
B: Components 1 to 12 are uniformly dispersed with a Henschel mixer (Mitsui Mining Co., Ltd.).
C: A is added to B and mixed.
D: C is pulverized with a pulverizer.
E: D was filled in a metal pan and compression molded to obtain white powder.
The obtained white powder was a solid powder cosmetic excellent in all items of “smoothness at the time of application”, “impact resistance”, and “goodness to take out of props”.

Example 10 Eye shadow (ingredient) (%)
1. Talc 5
2. Plate powder of calcium sulfate dihydrate 20
3. Titanium oxide coated synthetic phlogopite (average particle size 20 μm) 20
4). Titanium oxide-coated glass powder (average particle size 80 μm) 10
5. Spherical silica (Note 6) 2
6). Spherical silicone powder (Note 7) 1
7). 7. Sericite remaining amount Bengala 4
9. Yellow iron oxide 3
10. Black iron oxide 0.5
11. Methyl paraoxybenzoate 0.3
12 Synthetic hydrocarbon wax powder 0.5
13. Liquid paraffin 5
14 Methyl polysiloxane 5
Note 6: Silica microbead P-1505 (manufactured by Catalyst Kasei Kogyo Co., Ltd.)
Note 7: KSP-101 (Shin-Etsu Chemical Co., Ltd.)

(Production method)
A: Components 13 to 14 are mixed.
B: Components 1 to 12 are uniformly dispersed with a Henschel mixer (Mitsui Mining Co., Ltd.).
C: A is added to B and mixed.
D: C is pulverized with a pulverizer.
E: D was filled in a metal pan and compression molded to obtain an eye shadow.
The obtained eye shadow was a solid powder cosmetic excellent in all items of “smoothness at the time of application”, “impact resistance”, and “goodness to take out props”.

Example 11 Blusher (ingredient) (%)
1. Plate powder of calcium sulfate dihydrate 20
2. Talc 10
3. Boron nitride 5
4). Silicon-treated titanium oxide 5
5. Silicic anhydride (Note 8) 3
6). Nylon powder (Note 3) 2
7). Spherical silicone powder (Note 1) 2
8). Bengala 4
9. Yellow iron oxide 1
10. Black iron oxide 0.2
11. Sericite 12 Methyl paraoxybenzoate 0.3
13. Synthetic hydrocarbon wax powder 0.05
14 Squalane 4
15. Dimethicone 4
Note 8: God Ball D11-796C (manufactured by Suzuki Yushi Kogyo Co., Ltd.)

(Production method)
A: Components 14 to 15 are mixed.
B: Components 1 to 13 are uniformly dispersed with a Henschel mixer (Mitsui Mining Co., Ltd.).
C: A is added to B and mixed.
D: C is pulverized with a pulverizer.
E: D was filled in a metal pan and compression molded to obtain blusher.
The resulting blusher was a solid powder cosmetic excellent in all items of “smoothness at the time of application”, “impact resistance”, and “goodness to take out of props”.

Example 12 Eyebrow (Ingredient) (%)
1. Plate powder of calcium sulfate dihydrate 30
2. Talc 10
3. Polymethyl methacrylate (Note 4) 2
4). Spherical silicone powder (Note 1) 2
5. Bengala 2
6). Yellow iron oxide 1
7). Black iron oxide 8
8). Synthetic mica 5
9. Silicon processing sericite Methyl paraoxybenzoate 0.2
11. Liquid paraffin 4
12 Dimethicone 3
13. Polyisobutylene 1

(Production method)
A: Components 11 to 13 are mixed.
B: Components 1 to 10 are uniformly dispersed with a Henschel mixer (Mitsui Mining Co., Ltd.).
C: A is added to B and mixed.
D: C is pulverized with a pulverizer.
E: D was filled in a metal pan and compression molded to obtain an eyebrow.
The obtained eyebrow was a solid powder cosmetic excellent in all items of “smoothness at the time of application”, “impact resistance”, and “goodness to take out props”.

Claims (6)

The following components (a) to (c);
(A) Calcium sulfate dihydrate plate-like powder 20-50% by mass
(B) 0.5-7 mass% of elastic powder
(C) Liquid oil 2-10 mass%
And a component (a) and a component (b) at a mass ratio of component (b) / component (a) = 0.02 to 0.20.   The solid powder cosmetic according to claim 1, wherein the plate-like powder of calcium sulfate dihydrate is a plate-like powder having a major axis of 30 to 100 µm, a minor axis of 20 to 50 µm, and a thickness of 1 to 3 µm.   The solid powder cosmetic according to claim 1 or 2, wherein the elastic powder is an elastic powder having an average particle diameter of 3 to 35 µm.   Furthermore, 0.05-1.0 mass% of component (d) solid oil powder is contained, The solid powder cosmetics of any one of Claims 1-3 characterized by the above-mentioned.   The solid powder cosmetic according to claim 4, wherein the component (d) solid oil powder is a solid oil powder having an average particle size of 0.05 to 20 µm.   The solid powder cosmetic according to claim 4 or 5, wherein the component (d) solid oil powder is a solid oil powder having a melting point of 85 to 125 ° C.