JP6719269B2 - Powder-containing cosmetics - Google Patents

Description

The present invention relates to powder-containing cosmetics suitable as makeup cosmetics such as foundations and sunscreen cosmetics.

Powders that have been conventionally mixed in makeup cosmetics such as foundations, eye shadows, and blushers, sunscreen cosmetics, and emulsions have the purpose of improving adhesion to the skin and improving the feel of the powder. Therefore, a surface-coated powder in which the surface of the pigment powder is coated with various compounds is used.

As the surface-coated powder, silicone treatment (Patent Document 1), hydrophobic treatment powder such as metal soap treatment (Patent Document 2), hyaluronic acid treatment (Patent Document 3), amino acid treatment (Patent Document 4), etc. Chemically treated powder and the like are known.

JP, 60-163973, A JP 2004-051550 A JP 2002-201113A JP-A-8-48612

The conventional treated powder has a problem that the skin is easily dried and uneven.

The present invention has been made in view of the above-mentioned problems, has a moist feeling during and after use, has a skin care effect, has a glossy feeling, has less color unevenness, and further has a feeling on the skin, It is an object of the present invention to provide a powder-containing cosmetic having a good feeling in use such as extensibility.

The inventors of the present invention have completed the present invention as a result of earnestly examining such problems. That is, the present invention contains one or more powders selected from hydrogenated phospholipid-coated powders, spherical powders, and boron nitride in combination with polyhydric alcohol-coated powders It provides cosmetics.

The powder-containing cosmetic composition of the present invention has a moist feeling during and after use, has a skin care effect, has a glossy feeling, has less color unevenness, and has a good feeling in use such as skin feel and spreadability. Exerts the effect of being.

Hereinafter, modes for carrying out the present invention will be described in detail. However, the present invention is not limited to the following embodiments.

The powder-containing cosmetic of the present invention contains one or more powders selected from hydrogenated phospholipid-coated powder, spherical powder, and boron nitride as an essential component. It is advantageous in terms of usability to use a combination of two or more kinds selected from hydrogenated phospholipid-coated powder, spherical powder and boron nitride. Furthermore, it is preferable to use hydrogenated phospholipid-coated powder, spherical powder, and boron nitride in combination.

The hydrogenated phospholipid-coated powder is a powder whose surface is coated with hydrogenated phospholipid. Hydrogenated phospholipids used for the surface coating of the powder, egg yolk lecithin, those derived from natural products obtained by hydrogenating natural lecithin such as soybean lecithin, and phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, neutral phospholipids. Hydrogenated products and the like can be used. Among these hydrogenated phospholipids, hydrogenated soybean phospholipid is particularly preferable because it has a low odor. Examples of commercially available products include LTS series (manufactured by Daito Kasei), HSL-70 (manufactured by YMC), VLI-talc S (manufactured by Miyoshi Kasei Co., Ltd.) and the like.

The hydrogenated phospholipid-coated powder is produced, for example, as follows. That is, isopropyl alcohol and hydrogenated phospholipid are added to and mixed with a powder that is being stirred by a suitable mixer, and then the mixture is dried under reduced pressure at 120° C. with stirring to remove isopropyl alcohol as a solvent, and hydrogenation is performed. A phospholipid-treated powder is manufactured. Here, the coating amount of the hydrogenated phospholipid on the cosmetic powder is preferably 0.01 to 5 mass% with respect to the coated cosmetic powder, more preferably 0.02 to It is 5.0 mass %. If the coating amount is less than 0.01% by mass, it may not be possible to obtain a sufficient moisturizing effect. On the other hand, when the coating amount exceeds 5% by mass, an odor peculiar to hydrogenated phospholipid is generated, or the hydrogenated phospholipid is not adhered to the surface of the powder for cosmetics but precipitates itself. There is.

When the hydrogenated phospholipid-coated powder is blended, its content is preferably 5 to 70% by mass, and more preferably 10 to 40% by mass based on the total amount of the powder-containing cosmetic. If the content is less than 5%, the skin care effect may not be exhibited. If it exceeds 70% by mass, the odor derived from hydrogenated phospholipid may be a concern.

The spherical powder can be used without particular limitation as long as it is used in ordinary cosmetics, and may be either inorganic powder or organic powder. Specifically, examples of the inorganic spherical powder include silica, titanium oxide, zinc oxide, aluminum oxide, calcium carbonate, zirconium oxide, and cerium oxide. Examples of the organic spherical powder include nylon and polymethacrylic acid. Methyl, organopolysiloxane elastomer, methylsiloxane network polymer, cross-linked methylpolysiloxane, urethane resin, polystyrene, acrylonitrile-methacrylic acid copolymer, vinylidene chloride-methacrylic acid copolymer, polyethylene, silk, cellulose and the like. .. Among these, it is preferable to use one kind or two or more kinds selected from silica, a methyl siloxane network polymer, a cross-linking type methyl polysiloxane, and a urethane resin, and particularly to use these four kinds of spherical powders in combination. Is most preferred.

When the spherical powder is added to the powder-containing cosmetic, it is preferable that the spherical powder be contained in the total powder-containing cosmetic composition in an amount of 1 to 40% by mass, particularly 3 to 30% by mass. If the amount is less than 1% by mass, the effect of reducing elongation may not be felt. Even if compounded in an amount of more than 40% by mass, the effect of further improving elongation may not be observed, which is uneconomical.

Boron nitride can be used without particular limitation as long as it is used in ordinary cosmetics. The form of boron nitride may be any of hexagonal crystal, wurtzite structure, cubic crystal, rhombohedral crystal, turbostratic structure and the like, and hexagonal crystal is preferable from the viewpoint of usability. When compounding boron nitride, the compounding amount is preferably 0.1 to 20.0 mass% based on the total mass of the powder-containing cosmetic, and 1.0 to 10.0 mass% is more preferable. preferable. When it is less than 0.1% by mass, good gloss may not be obtained. If the amount is more than 20% by mass, the finish may be deteriorated.

The powder-containing cosmetic of the present invention further contains a polyhydric alcohol-coated powder.

The polyhydric alcohol for coating the surface of the powder is not particularly limited, but alone selected from glycerin, diglycerin, 1,3-butylene glycol, dipropylene glycol, pentylene glycol, and hexylene glycol, Alternatively, it is preferable to use two or more kinds in combination. Of these polyhydric alcohols, it is particularly preferable to use only glycerin from the viewpoints of effect and cost.

The powder whose surface is coated according to the present invention is not particularly limited, but it is particularly preferable to use powder for cosmetics. Such powders include titanium oxide, red iron oxide, yellow iron oxide, black iron oxide, zinc oxide, cerium oxide, manganese violet, cobalt violet, chromium oxide, chromium hydroxide, cobalt titanate, ultramarine blue, navy blue, magnesium oxide, Zirconium oxide, talc, kaolin, sericite, muscovite, phlogopite, synthetic mica, phlogopite, biotite, permiculite, silica, calcium carbonate, magnesium carbonate, magnesium silicate, aluminum silicate, barium silicate. , Calcium silicate, barium sulfate, calcium sulfate, calcium phosphate, hydroxyapatite, boron nitride, pearl pigment, inorganic pigments such as bismuth oxychloride, red No. 3, red No. 10, red No. 106, red No. 201, red No. 202 , Red 204, Red 205, Red 220, Red 226, Red 227, Red 228, Red 230, Red 401, Red 405, Red 505, Yellow 4, Yellow 5, Yellow No. 202, Yellow No. 203, Yellow No. 205, Yellow No. 401, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 205, Orange No. 206, Orange No. 207, Blue No. 1, Blue No. 2, Blue No. 201 , Blue 404, Green 3, Green 201, Green 204, Green 205, etc., natural pigments such as chlorophyll and β-carotene, zinc myristate, calcium palmitate, aluminum stearate, etc. Examples thereof include metal soap, organic powder such as nylon powder, cellulose powder, polyethylene powder, polymethylmethacrylate powder, polystyrene powder, acrylic powder, and silicon powder.

The powder is selected from titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, zinc oxide, talc, kaolin, sericite, muscovite, phlogopite, and synthetic mica from the viewpoint of the skin care effect of the present invention. One or more powders are preferably used, and titanium oxide, particularly pigment grade titanium oxide, is more preferable.

The mass ratio of the polyhydric alcohol used for the surface coating treatment of the powder is preferably 0.1 to 50 parts by mass with respect to the powder to be treated. If the mass ratio is less than 0.1 parts by mass, the uniform adhesion to the skin is not sufficient, and if it exceeds 50 parts by mass, the feel becomes very poor and it may not be suitable as a cosmetic.

Next, a method for producing the polyhydric alcohol-coated powder of the present invention will be described. The polyhydric alcohol coating method is not particularly limited, and the surface can be coated by a conventional method. For example, the pigment powder coated with a polyhydric alcohol is stirred in an appropriate mixer to leave the polyhydric alcohol as it is, or alcohols such as ethanol, isopropyl alcohol and isobutanol, and hydrocarbons such as toluene, n-hexane and cyclohexane. System organic solvent, acetone, ethyl acetate, a solution dissolved in a polar organic solvent such as butyl acetate, and after stirring by adding under droplets or spray spray, if necessary, the organic solvent is completely evaporated and removed, then, After pulverizing the powder, the polyhydric alcohol coating treatment can be performed by heating and aging the powder at 80 to 200°C.

As a device used for mixing and dispersing the powder, an appropriate method can be selected depending on the concentration and viscosity of the solution. Suitable examples include a reaction tank having a stirring blade, a method using a blender such as a disper, a Henschel mixer, a Loedige mixer, a kneader, a V-type mixer, a roll mill, a bead mill, and a twin-screw kneader, and an aqueous solution and a pigment. It is possible to select a spray drying method or the like, in which water is sprayed into heated air to remove water. Further, when pulverizing, a usual pulverizer such as a hammer mill, a ball mill, a sand mill, a jet mill can be used. Any of these pulverizers can obtain the same quality and is not particularly limited.

The content of the polyhydric alcohol-coated powder of the present invention in cosmetics is preferably 0.5 to 80% by mass. If the blending amount is less than 0.5% by mass, the skin care effect of the polyhydric alcohol-coated powder tends to be difficult to exert. On the other hand, when polyhydric alcohol powder exceeding 80 mass% is blended, formulation tends to be difficult.

As the form of the cosmetic of the present invention, any of dosage forms such as loose powder, press powder, stick, cream, emulsion, liquid, and multi-layer separated form can be adopted.

The cosmetics of the present invention can be blended with components usually used in cosmetics. Examples of such components include powders, surfactants, oils, UV protectors, polymers, aqueous components, preservatives, cosmetic components, and fragrances.

The powder-containing cosmetic composition of the present invention is particularly useful as a loose powder-like or press powder-like foundation or powder powder.

Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples.

[Preparation Example 1] Polyhydric alcohol-coated titanium oxide 1000 parts by mass of pigment-grade titanium oxide is charged into a blender. Subsequently, a solution prepared by dissolving 111.1 parts by mass of glycerin in 100 parts by mass of isopropyl alcohol was dropped and mixed, and well mixed with titanium oxide. Then, the inside of the blender was heated and decompressed to remove isopropyl alcohol. The coated powder was taken out from the blender, pulverized and heat-treated to obtain titanium oxide coated with 10% by mass of glycerin.

[Example 1, Comparative Examples 1 to 4]
Loose powder foundations according to the examples and comparative examples of the present invention were prepared by the conventional method with the formulations shown in Table 1.

[Evaluation of skin usefulness]
Example 5 and Comparative Example were applied after washing the face with 5 panelists specializing in cosmetics. Moisture, gloss, color unevenness, lightness of application, and persistence of moisturization 30 minutes after application The following criteria were evaluated by the consultation.
○: excellent △: slightly inferior ×: inferior

As shown in Table 1, the loose powder foundation of the present invention exhibits an excellent feeling of use in all evaluation items such as moist feeling upon application, gloss, uneven color, light elongation, and lasting moist feeling. It was On the other hand, Comparative Example 1 in which the hydrogenated soybean phospholipid-treated powder was replaced with the dimethicone-treated powder had a feeling of use lacking a moist feeling. Comparative Example 2 in which the polyhydric alcohol-coated titanium oxide according to Production Example 1 was replaced with dimethicone-treated titanium oxide had a moist feeling during application, uneven color, and a moist feeling lacking in sustainability during use. Comparative Example 3 in which boron nitride was replaced with hydrogenated soybean phospholipid-treated talc had a feeling of gloss and a feeling of use lacking in light elongation. Comparative Example 4 in which the spherical powder was replaced with hydrogenated soybean phospholipid-treated talc had a feeling of use lacking in light elongation.

Claims (1)

Powder containing hydrogenated phospholipid-coated powder as an essential component, containing one or more powders selected from spherical powder and boron nitride in combination with polyhydric alcohol-coated powder Cosmetics included.