JPS59101411A - Powdery cosmetic - Google Patents

Abstract

PURPOSE:To obtain a powdery cosmetic having reduced darkishness of silk powder while keeping the advantages of the powder, by dyeing silk powder in an acidic aqueous solution of a water-soluble tar dyestuff, washing thoroughly with water, filtering and drying the powder, and using the product as a colorant. CONSTITUTION:Silk powder is colored in a desired color by heating in an acidic aqueous solution (especially a solution of 2-5pH acidified with sulfuric acid) of a water-soluble tar dyestuff, especially Red 105 (1) (Rose Bengal) or Yellow 402 (Polar Yellow 5G) preferably raising the temperature slowly from 50 deg.C. The colored powder is washed thoroughly with water, filtered and dried to obtain a colorant, which is compounded to a cosmetic to obtain the objective powdery cosmetic. The cosmetic can be collected on a puff after forming, gives a beautiful fair skin free from darkishness, and exhibits excellent cosmetic effect. It is resistant to the sweat and water, and has excellent applicability to the skin, spreadability, clear feeling, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to powdered cosmetics, and more specifically to colored powder or solid cosmetics such as cakes and powders. To provide a cosmetic that allows easy and bright color makeup to be applied.

Conventionally, powdered cosmetics are colored using inorganic coloring pigments, water-insoluble tar pigments, or lakes of tar pigments. However, since inorganic pigments themselves do not have bright colors, cosmetics using them have the disadvantage that bright colors do not appear when makeup is applied. In the case of water-insoluble tar pigments, there are only a few types that can be used in cosmetics due to safety concerns, and in the case of lakes, the color density is low, so large amounts must be used, which impairs the properties of the cosmetics themselves. There is. In addition, water-soluble tar pigments cannot be used as they are in powdered cosmetics because they run into sweat and water.

On the other hand, silk powder has characteristics such as a smooth feel, ease of molding when making solid powder, ease of applying to puffs, transparency, etc. (Usually, ease of molding and ease of applying to puffs must be compatible However, because it is light gray in color, when used in cosmetics and applied to the face and skin, it causes dullness and even the skin tone becomes dull, making it impossible to achieve a smooth and beautiful skin tone. There were no drawbacks.

Therefore, when silk powder is used, the coloring properties of conventional coloring materials such as those mentioned above are further diminished when applied to the skin due to their dullness.

If enough tar pigment is added to cover dullness, the skin tone will become extremely strong and the color will not be suitable for cosmetics, making it impossible to put it to practical use.

The present invention has solved these conventional problems, and has developed a powdered cosmetic that takes advantage of the advantages of silk powder, and that produces a bright and even color when applied to the skin and is especially effective on skin tone. It was successfully manufactured.

That is, in the present invention, silk powder is heat-treated in an acidic aqueous solution of a water-soluble tar pigment to obtain a predetermined color. Examples of the water-soluble tar pigment that can be used in the present invention include the following.

Reds include Red No. 401 (Violamine R) and Red No. 104 (1).
(Phloxin B), Red No. 105 (1) (Rose Bengal), Red No. 203 (1) (Nioxin YS),
The former champion among Red No. 504 (Bonsor R) and the like is particularly preferred, and Red No. 105 (1) is particularly preferred.

In addition, yellow colors include Yellow No. 402 (Polar Yellow 5G) and Yellow No. 203 (
Quinoline Yellow WS), Yellow No. 403 (1) (Naphthol Yellow S), Yellow No. 5 (Sunsera) IW-Fe2
), and Yellow No. 402 is particularly preferred.

Next, in the present invention, the silk powder is preferably dyed in a conventional manner.

(1) Sodium sulfate 0-10% (2) Sulfuric acid for pH adjustment (3) Tar pigment 0.01-0.5 inch (4) Silk powder 10 inch (5) Make 100 inch with purified water.

(4) is added to the aqueous solutions of (1) to (8) and (6) above kept at 50°C, and the temperature is gradually raised to 100°C over 30 to 45 minutes. After heating at 100°C for 1 hour, add sulfuric acid (for 0.5 mj/1 looy) and heat for 15 minutes, filter the water until the pH becomes neutral, and most of the washing liquid is removed. Wash with water until no longer colored. Dry the resulting r hyperkinesia.

Dyeing can be carried out without necessarily raising the temperature gradually above 50°C, but from the viewpoint of uniformity it is preferable to carry out the dyeing process at a temperature above 50°C. Hydrochloric acid, glacial acetic acid, acetic acid or ammonium acetate can also be used in place of sulfuric acid, but sulfuric acid stains best. Furthermore, even when using sulfuric acid, the pH is below 2, $f
'1 Dyeing is possible even at a pH of 5 to 7, but dyeing is best in the pH range of 2 to 5.

The silk powder thus obtained is mixed into the required formulation materials as a main coloring agent to form a powdered cosmetic.

Example (1) Talc 20 parts by weight (2) Mica 50 (3) Kaolin 5 (4) Titanium oxide
5 (5) Yellow iron oxide
2〃(6) Red Garla
1 〃(7) Colored silk powder 10 〃(
8) Binder 7 (9) Fragrance Appropriate amount After mixing (1) to (4) above, add (5) and (6) and mix well, then add ()) and mix thoroughly and uniformly. Finally, after adding (9), the mixture is pulverized using a pulverizer. The obtained fine powder is molded into a predetermined shape using a molding machine to form a cake.

The thus-obtained cosmetic of the present invention was easy to take off with a puff, and when applied to the skin and applied as make-up, it developed a bright and beautiful complexion, and a beautiful make-up effect was obtained without causing any dullness. It also did not run off with sweat or water, and had excellent adhesiveness, spreadability, and transparency.

Patent applicant: Seven Chemical Co., Ltd. Agent: Yoshio Dokimura, patent attorney

Claims (1)

[Claims] Silk powder is heat-treated in an acidic aqueous solution of water-soluble tar pigment to give it a desired color.