Composite powder in which porous polymer is impregnated with scoria powder particles, cosmetic composition containing same, and process for producing same

Patent metadata

Field	Value
Publication number	US-10472485-B2
Application number	US-201615764935-A
Country	US
Kind code	B2
Filing date	Sep 26, 2016
Priority date	Sep 30, 2015
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

The present invention relates to a composite powder of scoria powder and a porous polymer. More particularly, the present invention relates to a composite powder (scoria sphere) in which the surface and the inside of a porous polymer are uniformly impregnated with scoria powder particles prepared by spraying in one-step a dispersion in which scoria powder is dispersed in a solution in which a polymer is dissolved; a cosmetic composition containing the same; and a process for producing the same. When the scoria impregnated powder, of the present invention, in which the porous polymer is uniformly impregnated with the scoria powder particles, is formulated as a cosmetic composition, the porous polymer supplements the sebum absorption performance of the scoria miniaturized in a micro size, and thus the sebum absorption power is greatly improved.

First claim

The invention claimed is:

1. A composite powder in which a porous polymer is impregnated with scoria powder particles, wherein the average particle diameter of the scoria powder is 0.1 to 2 μm.

2. The composite powder according to claim 1 , wherein the scoria powder is impregnated in an amount of 50 to 90% by weight based on the total weight of the composite powder.

3. The composite powder according to claim 1 , wherein the porous polymer comprises at least one selected from the group consisting of poly-(methyl methacrylate), poly-(vinyl pyrrolidone), poly-(caprolactone), poly-(L-lactic acid), poly-(ethylene oxide), poly-(propylene oxide), poly-(dimethyl siloxane), poly-(lactic-co-glycolic acid), polystyrene and a copolymer thereof.

4. The composite powder according to claim 1 , wherein the composite powder has the average particle diameter of 5 to 20 in and is a sphere.

5. The composite powder according to claim 1 , wherein the porosity of the composite powder is 40 to 85%.

6. The composite powder according to claim 1 , wherein the average pore size of the composite powder is 15 to 800 nm.

7. A method for preparing a composite powder in which a porous polymer is impregnated with scoria powder particles, comprising:
spray drying or electro-spraying a dispersion in which the scoria powder is dispersed in the polymer solution to prepare the composite powder,
wherein the average particle diameter of the scoria powder is 0.1 to 2 μm.

8. The method according to claim 7 , wherein the solvent of the polymer solution is a mixed solvent of dichloromethane and hexanol.

9. The method according to claim 8 , wherein the weight ratio of dichloromethane to hexanol is 9:1 to 7:3.

10. A cosmetic composition containing the composite powder according to claim 1 .

Assignees

• Amorepacific Corp

Inventors

• Lee Hyun Suk
• Paik Dong-Hyun
• Shin Jin Seob
• Yang Mi-Suk
• Choi Sung-Wook
• Kim Yong Jin
• Lee John Hwan

Classifications

• A61K2800/61

  Surface treated · CPC title

• A61K8/315

  Halogenated hydrocarbons · CPC title

• A61K8/0279

  Porous; Hollow · CPC title

• A61K2800/654

  The particulate/core comprising macromolecular material · CPC title

• C08J3/212

  and solid additives · CPC title