JP2649448B2 - Water repellent powder and cosmetic containing the powder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in water repellency, has good elongation on the skin, has a good feeling in use, gives a clear feeling and a bare skin feeling, and has uneven color such as spots and freckles existing on the skin. The present invention relates to a water-repellent powder excellent in the effect of making a hard to see and a cosmetic containing the powder.

[0002]

2. Description of the Related Art As cosmetics containing powder, makeup cosmetics such as foundation, white powder, blusher, eye shadow, eyebrow and the like, and body cosmetics such as body powder and baby powder are commercially available.

[0003] Due to the nature of the cosmetic effect, these cosmetics are required to hide uneven color such as spots and freckles existing on the skin when applied to the skin. Performance such as water repellency for preventing sensation and perspiration is also a problem. Conventionally, pigments with high hiding power, i.e., pigments with a high refractive index and pigments with high coloring power, such as titanium dioxide, red iron oxide, yellow iron oxide, and organic pigments, are used as coloring pigments in order to meet the demand for hiding color unevenness. And
Covering power has been increased, and a method has been adopted to make it difficult to see uneven color such as spots and freckles existing on the skin. However, pigments having a high hiding power as described above, that is, cosmetics containing many pigments having a high refractive power and pigments having a high coloring power show a thick cosmetic feeling when applied to the skin,
It has the disadvantage of becoming opaque and losing the natural skin feel.

[0004] On the other hand, conventionally, in order to impart a sense of transparency and bare skin to the makeup skin, a pigment having a small refractive index such as talc, kaolin, mica, mica, or the like has been blended into a cosmetic as an extender pigment. In addition, these extender pigments have been added to cosmetics in a large amount because they have superior usability such as spreading and sticking compared to the coloring pigments described above. However, when a large amount of such extender pigments are blended, they tend to give a glimpse to the appearance or give an unnatural luster when applied to the skin, so the surface of these extender pigments is coated with an inorganic silicate compound. (JP-A-60-228406), coating with an acrylic resin (JP-A-61-69708), etc., and blending the resulting pigment with cosmetics.
Attempts have been made to obtain clarity, bare skin and a natural finish. However, when a cosmetic containing the above-mentioned extender, an inorganic silicate compound-coated extender, an acrylic resin-coated extender, or the like is applied to the skin, it can have a transparent feeling and a bare skin feeling, but it is refracted itself. Since the pigment has a low ratio, the covering power is insufficient, and it has a drawback that the original function of the cosmetic, which hides the color unevenness such as spots and freckles existing on the skin, cannot be sufficiently exhibited.

[0005] In addition, when the cosmetic is applied to the skin, the performance such as elongation and smoothness on the skin is also a problem, and the powder is coated with an N-mono long-chain acyl basic amino acid for the purpose of improving feel and adhesion. (Japanese Patent Application Laid-Open No. 61-10503) has been proposed. However, as described above, pigments having a high hiding power conventionally used, i.e., pigments having a large refractive index and pigments having a high coloring power and extender pigments, inorganic silicate compound-coated pigments, acrylic resin-coated pigments, and the like are transparent. It has a drawback that it cannot satisfy both of imparting a feeling and a bare skin feeling and a cover of uneven color such as spots and freckles existing on the skin.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a transparent and bare skin sensation, to hide uneven color such as spots and freckles existing on the skin, and to provide a superior use feel, particularly excellent smoothness. Another object of the present invention is to provide a water-repellent powder which simultaneously satisfies the four requirements of water repellency against sweat swelling, and a cosmetic containing the same.

[0007]

The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have found that barium sulfate powder having a specific plate-like structure can be surface-coated with N-mono long-chain acyl basic amino acids. By performing the treatment, a water-repellent powder having water repellency and further excellent feeling in use can be obtained. By blending this, water resistance is extremely good, and it has a transparent feeling, a bare skin feeling, The present inventors have found that a cosmetic excellent in hiding power of existing color spots such as spots and freckles can be obtained, and completed the present invention.

That is, the present invention has a plate-like structure, the aspect ratio of which is 5 to 100, and the ratio of the square of the perimeter of the plate-like surface to the area of the orthographic surface of the plate-like surface. 20:
An object of the present invention is to provide a water-repellent powder obtained by surface-treating a barium sulfate powder of 1 to 150: 1 with an N-mono long-chain acyl basic amino acid, and a cosmetic containing the same.

The barium sulfate powder used in the present invention has a plate-like structure, has an aspect ratio of 5 to 100, and has the square of the perimeter of the plate-like surface and the area of the orthographic surface of the plate-like surface. Is defined as 20: 1 to 150: 1. The shape is preferably a butterfly shape having one or two mirror image planes perpendicular to the plate-like surface and having a concave portion at an edge. In addition, when this barium sulfate powder was subjected to X-ray diffraction, the diffraction peak intensity ratio between the (020) and (200) planes of the crystal became very large, and (020) / (20)
0) = 1.5 to 100 are particularly preferred.

[0010] Such barium sulfate powder is produced by reacting a barium salt solution with a sulfate solution. The barium salt used here is soluble in a solvent such as water or alcohol, and examples thereof include barium chloride, barium nitrate, barium acetate, and barium hydroxide.
The purity is preferably 1000 ppm or less of metal ions other than barium so as not to impair the transparency characteristic of the cosmetic of the present invention. Sulfate means sulfate and sulfuric acid which are soluble in a solvent such as water and alcohol, and examples of the sulfate include sodium sulfate and ammonium sulfate. It is preferable to use a sulfate solution containing no.

The barium ion concentration of the barium salt solution and the sulfate ion concentration of the sulfate solution need to be 0.001 to 0.05 mole / l before the reaction. If these concentrations are less than 0.001 mole / l, the plate-like structure of the crystal is broken and becomes close to a columnar shape, so that the feeling of use is deteriorated and the yield as barium sulfate is lowered, which is not industrially preferable. On the other hand, if it exceeds 0.05 mole / l, the plate-like structure of the crystal is broken down into fine particles, so that the feeling of use is deteriorated, the light scattering effect is large, and the transparency is poor. In the reaction, the barium salt solution and the sulfate solution are mixed in a molar ratio of 1:10 to 5: 1. During the reaction, the pH is adjusted with hydrochloric acid, sulfuric acid and nitric acid as necessary so that the pH is 1.0 to 5.0, and the reaction temperature is 50 to 100 ° C, preferably 60 to 95 ° C.
When the pH and the reaction temperature are out of these ranges, the plate-like structure of the crystal is broken, and the feeling of use and transparency are deteriorated.

The barium sulfate powder obtained as described above has a scatter transmittance of 70% or more and a total transmittance of 8% when a thin film having a powder concentration of 20% by weight and a thickness of 25 μm is formed.
It has an optical property of 5% or more. Powders having such optical properties have high total transmittance, so that reflected scattered light is small.On the other hand, powders having high scattered transmittance have large transmitted scattered light. The transmitted light has the effect of being scattered and making the base blurred and difficult to see. Such an effect does not exist in the conventional pigment, and is hereinafter referred to as “sharpness suppressing effect”.

On the other hand, N-mono (aliphatic acyl having 8 to 22 carbon atoms) used for the surface treatment of the above barium sulfate powder.
As basic amino acids that constitute basic amino acids,
α, γ-diaminobutyric acid, ornithine, lysine, arginine, histidine and the like, which may be optically active or racemic. The long-chain aliphatic acyl group is a saturated or unsaturated straight-chain or branched-chain aliphatic acyl group having 8 to 22 carbon atoms, and may have a single chain length or a mixed chain length. Is also good. Specifically, 2
-Ethylhexanoyl, capryloyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl, isostearyl, oleoyl, behenoyl, cocoyl, tallow fatty acid acyl, hardened tallow fatty acid acyl and the like. The binding site of the long-chain acyl group to the basic amino acid is an amino group at the α-position or an amino group at the ω-position, but is limited to the amino group at the α-position in arginine and histidine. Specific examples include Nε-2-ethylhexanoyl lysine, Nε-lauroyl lysine, Nε-cocoyl lysine, Nε-palmitoyl lysine, Nε-isostearoyl lysine, Nε-hardened tallow fatty acid acyl lysine, N
α-capryloyl lysine, Nα-lauroyl lysine, N
α-myristoyl lysine, Nα-oleoyl lysine, N
α-behenoyl lysine, Nδ-cocoyl ornithine, N
δ-stearoyl ornithine, Nδ-tallow fatty acid acyl ornithine, Nα-ethylhexanoyl ornithine, N
α-lauroyl ornithine, Nα-isostearoyl ornithine, Nγ-palmitoyl-α, γ-diaminobutyric acid, Nα-tallow fatty acid acyl-α, γ-diaminobutyric acid,
Nα-caproylarginine, Nα-lauroylarginine, Nα-palmitoylarginine, Nα-hardened tallow fatty acid acylarginine, Nα-cocoylhistidine,
Nα-isostearoyl histidine and the like,
It is not limited to these examples.

As a method of treating the barium sulfate powder with an N-mono long chain aliphatic acyl basic amino acid, any of a dry method and a wet method can be used. The dry method is simple and effective. The fine powder of N-mono long chain aliphatic acyl basic amino acid is mixed with barium sulfate powder with stirring, or the N-mono long chain aliphatic acyl basic amino acid is mixed with sulfuric acid. By mixing and then pulverizing the barium powder, the surface of the barium sulfate powder can be easily treated. Since the wet method hardly dissolves N-mono long-chain aliphatic acyl basic amino acids in water near neutrality and ordinary oil, calcium chloride is used as a solubilizing agent for N-mono long-chain aliphatic acyl basic amino acids. Is dissolved in an organic solvent, and then the barium sulfate powder is brought into contact with the powder, washed with water to remove calcium chloride, and dried to treat the surface of the barium sulfate powder. Alternatively, after dissolving the N-mono long-chain aliphatic acyl basic amino acid in acidic or alkaline water or aqueous solvent and contacting the barium sulfate powder, neutralize the solution to near neutrality and apply it to the surface of the barium sulfate powder. The same surface treatment can be performed by depositing and attaching an N-mono long-chain aliphatic acyl basic amino acid, removing salts produced by neutralization by washing with water, and drying (Japanese Patent Application Laid-Open No. 61-7202).
No. 61-10503).

The amount of the N-mono long chain aliphatic acyl basic amino acid to be applied to the barium sulfate powder is preferably 0.0
The content is 5 to 20% by weight, more preferably 0.5 to 15% by weight. If the amount is less than 0.05% by weight, the surface treatment effect is not sufficient, and if the amount exceeds 20% by weight, the treatment effect is not so improved, so that there is no advantage in terms of economy.

The surface-treated powder thus obtained has an excellent sharpness suppressing effect, excellent water repellency, and a good feel when applied to the skin, so that an excellent cosmetic can be obtained by using it. .

The cosmetics of the present invention include foundation, powdered powder, solid powder, blusher, eye shadow,
Makeup cosmetics and emulsions such as lipsticks and eyeliners,
Basic cosmetics such as creams can be mentioned,
It can be applied in a wide variety of forms such as powder, cake, emulsion, oil, and gel.

The compound of the surface-treated powder in the cosmetic of the present invention is arbitrarily selected depending on the properties of the cosmetic, but is preferably 0.1 to 99% by weight based on the total amount of the cosmetic component.

The cosmetic of the present invention contains, in addition to the above-mentioned surface-treated powder, which is an essential component, components which are added to ordinary cosmetics as needed, as long as the effects of the present invention are not impaired. Various oils, surfactants, other powders, water-soluble polymers,
Preservatives, drugs, pigments, fragrances, humectants, ultraviolet absorbers, water and the like may be added.

Examples of the oil include liquid paraffin,
Vaseline, paraffin wax, squalane, beeswax, carnauba wax, olive oil, lanolin, higher alcohol, fatty acid, higher fatty acid, ester oil, ceresin, microcrystalline wax, candelilla wax, diglyceride, triglyceride, silicone oil, perfluoropolyether, perfluoro Oils commonly used in cosmetics such as decalin and perfluorooctane are used.
As the surfactant, for example, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, poly Nonionic surfactants such as oxyethylene sorbitol fatty acid esters; anionic surfactants represented by fatty acid soaps such as sodium stearate and triethanolamine palmitate; and cationic surfactants and amphoteric surfactants Surfactants commonly used in cosmetics are used. Examples of the water-soluble polymer include carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, tragacanth gum, carrageenan, locust bean gum, dextrin, dextrin fatty acid ester, carboxyvinyl polymer, xanthan gum, gelatin, sodium alginate, gum arabic, etc. Water-soluble polymers commonly used in cosmetics are used.

Examples of the humectant include cosmetics such as sorbitol, xylitol, glycerin, maltitol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, sodium pyrrolidonecarboxylate, lactic acid, sodium lactate and polyethylene glycol. A humectant commonly used for is used. As preservatives,
For example, preservatives commonly used in cosmetics such as alkyl paraoxybenzoate, sodium benzoate, and potassium sorbate are used. As the drug, for example, drugs commonly used in cosmetics such as vitamins, crude drugs, anti-inflammatory agents, bactericides and the like are used. Examples of the UV absorber include UV absorbers commonly used in cosmetics, such as a paraaminobenzoic acid UV absorber, an anthranyl UV absorber, a salicylic acid UV absorber, a cinnamic acid UV absorber, and a benzophenone UV absorber. Used.

Other powders include, for example, talc, mica, kaolin, sericite, muscovite, synthetic mica, phlogopite, phlogopite, biotite, litthic mica, vermiculite,
Magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, metal tungstate,
Inorganic powders such as hydroxyapatite, hydrous silicic acid, silicic anhydride, magnesium oxide, bentonite, zeolite, ceramic powder, and aluminum hydroxide; nylon powder, polyethylene powder, polymethylbenzoguanamine powder, polymethyl methacrylate powder, and polytetrafluoroethylene powder Organic powders such as crystalline cellulose and rice starch lauroyl lysine; surfactant metal salt powders such as calcium stearate, zinc stearate, magnesium stearate, magnesium myristate, calcium cetyl phosphate, sodium zinc cetyl phosphate; titanium oxide, oxidation Zinc, zirconium oxide, iron oxide (Bengara), iron titanate, iron hydroxide, loess, black iron oxide, carbon black, mango violet, cobalt violet, oxidation Inorganic colored powders such as ROM, chromium hydroxide, cobalt titanium, ultramarine and navy blue; titanium oxide coated mica, titanium oxide coated bismuth oxychloride, bismuth oxychloride, titanium oxide coated talc, fish scale foil, colored titanium oxide coated mica, etc. Pearl pigments; aluminum powder, stainless powder,
Powders commonly used in cosmetics such as metal powders such as copper powder and powders treated with silicon or fluorine compounds are used.

As the coloring matter, for example, Red No. 3, Red No. 10
No. 4, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226
No., Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 505, Yellow No. 4, Yellow No. 5, Yellow No. 2
No. 02, Yellow No. 203, Yellow No. 204, Yellow No. 401,
Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, Green No. 205,
Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 20
Tar dyes such as No. 6, orange No. 207 and the like; dyes widely used in cosmetics such as natural dyes such as carminic acid, laccaic acid, bradyline and crocin are used.

The cosmetic of the present invention can be produced according to a conventional method except that the above surface-treated powder is blended.

[0025]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. All amounts are by weight.

Reference Example 1 1.974 g of a special grade barium chloride reagent and 0.50 of special grade sulfuric acid
5 g were dissolved in 1000 g of deionized water, respectively.
A 008 mole / l barium solution and a 0.005 mole / l sulfuric acid solution were used. Next, each solution was heated to 70 ° C., and a barium solution was added dropwise to the sulfuric acid solution stirred at 1,000 rpm using a U-shaped stirring spring over 10 minutes, followed by stirring for 3 minutes to terminate the reaction. The pH during the reaction was 3.5. Next, the mixture was cooled to room temperature, filtered through a 5C filter paper, washed with water, and dried at 105 ° C. for 2 hours to obtain a barium sulfate powder.
12 g were obtained. The obtained powder had an average diameter of the plate-like surface of 5.
The thickness was 3 μm, the aspect ratio was 58, and the ratio of the square of the perimeter of the plate surface to the area of the orthographic surface of the plate surface was 88: 1.
Also, in the X-ray diffraction, (020)
And (200) plane had a diffraction peak ratio of 5.3, a butterfly shape, a well-developed plate-like structure, transparency, and slippery powder. Here, the degree of development of the plate-like structure was measured as follows. That is, 1 g of powder is dispersed in 50 cc of ethanol, then a thin film having a thickness of about 15 μm is formed on a glass plate, dried, and then dried.
It was evaluated by the intensity ratio of the (020) / (200) diffraction peak of the crystal by line diffraction. X-ray diffraction is manufactured by Rigaku Denki (model;
RAD-200) at 40 kV and 80 mV.

Production Example 1 The butterfly barium sulfate obtained in Reference Example 1 was mixed with 150
g and 7.5 g of N-lauroyl lysine were placed in a Henschel mixer and stirred and mixed for 10 minutes to perform a surface treatment, thereby obtaining 155 g of N-lauroyl lysine-treated butterfly-like barium sulfate treated with N-lauroyl lysine.

Production Example 2 A round bottom flask (or kneader) is charged with 50 g of the barium sulfate barium sulfate obtained in Reference Example 1. After dissolving 50 g of calcium chloride in 2500 g of ethanol in advance, a solution of 2.5 g of N-lauroyl lysine is added, followed by stirring and mixing at room temperature for 2 hours. Next, this was filtered, washed with water to remove calcium chloride, and dried to obtain 51 g of barium sulfate, a butterfly-like N-lauroyllysine-treated water-repellent powder.

Test Example 1 The surface-treated powders obtained in Production Examples 1 and 2 were evaluated for water repellency and feel. (Method of evaluating water repellency) About 0.05 g of each powder was floated on 15 ml of water in a beaker for 30 ml, and the beaker was shaken to observe the dispersibility of the powder in water. The evaluation was based on the following criteria. 0: The powder was immediately dispersed in water. 1: When the beaker was shaken, the powder was almost completely dispersed in water within 30 seconds. 2: When the beaker was shaken, the water became cloudy and white after 1 minute, but floating powder was also observed. 3: When the beaker was shaken, the water became cloudy and white after one minute, but there were many floating powders. 4: One minute after the beaker was shaken, water did not become cloudy and no dispersed powder was observed. Even when the beaker was shaken for 5: 1 minutes or more, no powder dispersed in water was observed. (Feeling Evaluation Method) Five special panelists evaluated the feeling of the powder on the basis of the following five grades from 1 to 5 based on the smoothness, squeakiness, and roughness of the powder, and the average value was shown. In addition, plate-like barium sulfate H having an average particle size of 5 μm (produced by Sakai Chemical Industry Co., Ltd .: aspect ratio = 5, ratio of square of perimeter of plate-like surface to area of orthographic surface = 9: 1) The feel of the untreated powder was set to a standard value of 3.0. 1: Poor touch such as smoothness 2: Poor touch such as smoothness 3: Normal (equivalent to plate-like barium sulfate H) 4: Good touch such as smoothness 5: Good touch such as smoothness Table 1 shows the results.

[0030]

[Table 1]

From Table 1, it can be seen that the surface-treated powder of the present invention is superior in both water repellency and feel as compared with untreated barium sulfate.

Example 1 Using the surface-treated powder obtained in Production Example 2, pressed face powders as shown in Table 2 were prepared, and their use feeling and finished feeling were evaluated. Table 4 shows the results. (Production method) Powder components 1 to 6 are mixed and pulverized. This was transferred to a Henschel mixer, and oil layer components 7 and 8 were added and mixed uniformly. After the component 9 was added to the mixture and mixed, the mixture was ground again and passed through a sieve. This was press-molded on a metal plate to obtain a product.

[0033]

[Table 2]

(Evaluation Method) The evaluation was performed by the 16 expert panelists on the following items based on the criteria shown in Table 3 with respect to Comparative Examples 1 and 2, and the total score of the 16 panelists was shown in Table 4. Indicated. Item 1: feeling of use Item 2: bare skin (transparency) Item 3: difficulty in seeing uneven skin color

[0035]

[Table 3]

[0036]

[Table 4]

As is evident from Table 4, the cosmetics of the present invention, when applied to the skin, are more susceptible to spots, freckles, etc. due to the sharpness suppressing effect of the compounded surface-treated powder when compared to Comparative Examples 1 and 2. It is clear that it is an excellent face powder that is not present in conventional cosmetics, such that the color unevenness of the product becomes difficult to see, and the surface treatment with N-mono long-chain fatty acid basic amino acid improves the usability. Became.

Example 3 Powder foundation (Production method) Powder components 1 to 7 were mixed and pulverized. This was transferred to a Henschel mixer, and oil layer components 8 to 10 were added and mixed uniformly. After the component 11 was added to the mixture and mixed, the mixture was pulverized again and passed through a sieve. This was press-molded on a metal plate to obtain a product. (Composition) (% by weight) 1. Surface-treated powder of Production Example 2 50.0 Mica remaining 3. Talc 20.0 4. Titanium oxide 10.0 5. Bengara 0.8 6. Iron oxide yellow 2.5 7. Black iron oxide 0.18. Liquid paraffin 8.0 9. Beeswax 2.010. Preservatives qs . Fragrance trace total 100

Example 4 Powder paste (Production method) Powder components 1 to 8 were mixed and pulverized. This was transferred to a Henschel mixer, and components 9 and 10 were further added and mixed uniformly. This mixture was crushed and sieved to obtain the product. (Composition) (% by weight) 1. Surface-treated powder of Production Example 2 50.0 Mica remaining 3. Talc 20.0 4. Titanium oxide 0.55. Bengara 0.16. Iron oxide yellow 0.1 7. 7. Black iron oxide 0.01 Magnesium stearate 10.0 9. Preservative appropriate amount 10. Fragrance trace total 100

Example 5 Cream Foundation (Preparation Method) Powder components 11 to 14 were mixed and pulverized. Separately, a solution was prepared by mixing aqueous phase components 7 to 10, and after adding and dispersing the ground pigment, the mixture was heated to 75 ° C. Oil phase components 1-6
Was heated and dissolved at 80 ° C., and the mixture was stirred and emulsified in the previously prepared aqueous phase. Cool while stirring
Component 15 was added at 0 ° C., and the mixture was cooled with stirring to obtain a product. (Composition) (% by weight) Stearic acid 5.5 2. 2. Lipophilic glyceryl monostearate 2.5 Cetostearyl alcohol 1.0 4. 4. Propylene glycol monolaurate 3.0 Squalane 7.0 6. Olive oil 8.0 7. Purified water balance 8. Preservative appropriate amount 9. Triethanolamine 1.2 10. Sorvit 3.0 11. Titanium oxide 10.0 12. Talc 5.0 13. 13. Color pigment (black iron oxide, red iron oxide, yellow iron oxide) Surface treated powder 8.0 15 Production Example 2. Fragrance trace total 100

Example 6 Blush (Production method) Powder components 1 to 7 were mixed and pulverized. This was transferred to a Henschel mixer, and oil layer components 8 to 10 were added and mixed uniformly. The mixture was ground again and passed through a sieve. This was press-molded on a metal plate to obtain a product. (Composition) (% by weight) 1. Surface-treated powder of Production Example 2 50.0 Mica remaining 3. Talc 20.0 4. Titanium oxide 4.0 5. 5. Zinc stearate 5.0 Rice starch 5.0 7. Coloring material 3.0 8. Liquid paraffin 3.0 9. Preservative appropriate amount 10. Fragrance trace total 100

Example 7 Eye shadow (Production method) Powder components 1 to 7 were mixed and pulverized. This was transferred to a Henschel mixer, and oil layer components 8 to 10 were added and mixed uniformly. The mixture was ground again and passed through a sieve. This was press-molded on a metal plate to obtain a product. (Composition) (% by weight) 1. Surface-treated powder of Production Example 2 50.0 Mica remaining 3. Talc 5.0 4. 4. Mica titanium 5.0 5. Zinc stearate 5.0 Zinc laurate 3.0 7. Coloring material 10.0 8. Liquid paraffin 7.5 9. Preservative appropriate amount 10. Fragrance trace total 100

Example 8 Lipstick (Production method) Powder components 7 to 14 were heated and melted and uniformly mixed. After adding 1 to 6, kneading with a roll mill and uniformly dispersing, re-melting, adding 15 to 17 to remove bubbles, pouring into a mold, and quenching to solidify. Remove the solidified material from the mold and fill the container. Next, in order to adjust the appearance of the stick, it is passed through a flame to make the surface uniform. (Composition) (% by weight) Titanium oxide 1.0 2. Red No. 201 1.0 3. Red No. 202 2.0 4. Blue No. 4 aluminum lake 1.05. Red No. 223 0.16. 6. Surface-treated powder of Production Example 2 5.0 Castor oil 46.9 8. Octyldodecanol 15.0 9. Lanolin 5.0 10. Liquid lanolin 5.0 11. Beeswax 5.0 12. Ozokerite 4.0 13. 13. Candelilla Row 7.0 Carnauba wax 1.0 15. Antioxidant appropriate amount 16. Preservative trace amount 17. Perfume appropriate amount total 100

Example 9 Eyeliner (Preparation method) 6 was added to a part of 5 and dispersed and gelled through a colloid mill. On the other hand, 1 to 4 and 10 were mixed, heated and dissolved, 7 to 9 was added, then cooled and kneaded with a roll mill, and again heated and melted, then the bentonite gel and the remaining 5 were added and stirred. While cooling. (Composition) (% by weight) Carnauba wax 5.0 2. Beeswax 1.03. Microcrystalline wax 10.0 4. White petrolatum 1.05. Light liquid isoparaffin 67.5 6. Organic bentonite 0.5 7. 7. Surface-treated powder of Production Example 2 10.0 Titanium oxide 3.0 9 Carbon black 2.010 . Preservatives 100

Example 10 O / W cream (Preparation method) 8, 9, 12 and 13 were mixed by stirring and kept at 80 ° C. The other components were mixed and dissolved by heating to 80 ° C. The above-mentioned aqueous phase was added to the oil phase, preliminarily emulsified, uniformly emulsified by a homomixer, and then cooled to 30 ° C. to obtain a product. (Composition) (% by weight) Beeswax 5.5 2. Cetanol 4.5 3. Hydrogenated lanolin 7.0 4. Squalane 33.0 5. Fatty acid glycerin 3.5 6. 6. Lipophilic glyceryl monostearate 2.0 7. Polyoxyethylene sorbitan monolaurate (20EO) 2.0 8. Surface treated powder of Production Example 2 8.0 Perfume 0.1 10. Preservatives 0.2 11. Antioxidant 0.1 12. Propylene glycol 10.0 13. Purified water Total remaining amount 100 When any of the cosmetics obtained in Examples 3 to 10 are applied to the skin, color unevenness such as spots and freckles becomes difficult to see due to the sharpness suppressing effect of the compounded surface-treated powder. In addition, the cosmetics were extremely good, unlike conventional cosmetics, such as an improvement in the feeling of use.

[0046]

Industrial Applicability According to the present invention, while having a transparent feeling and a bare skin feeling, the color unevenness such as spots and freckles existing on the skin is hidden, and furthermore, the feeling in use, particularly the smoothness, is excellent, and the water resistance against sweating is further improved. A cosmetic that satisfies the four conditions at the same time can be provided.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-4770 (JP, A) JP-A-3-257016 (JP, A) JP-A-4-5215 (JP, A) JP-A-4-4 41411 (JP, A) JP-A-4-108716 (JP, A) JP-A-5-186706 (JP, A)

Claims (2)

(57) [Claims] 1. A plate-like structure having an aspect ratio of 5
Barium sulfate powder having a ratio of the square of the perimeter of the plate-shaped surface to the area of the orthogonally projected surface of the plate-shaped surface being 20: 1 to 150: 1, is N-mono (carbon A water-repellent powder obtained by performing a surface treatment with an aliphatic acyl (basic number 8 to 22) basic amino acid. 2. A cosmetic comprising the water-repellent powder according to claim 1.