Title:
UV REFLECTING POWDER AND COSMETIC CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP3455066
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a monodisperse powder, having high transparency, excellent-in UV protecting effects and useful as a formulating ingredient of a cosmetic by providing a powder, capable of forming a regular structure and having the UV selective reflectivity when coated.
SOLUTION: This monodisperse powder (which may be any of an inorganic powder, an organic powder, a complex powder thereof, etc., and has 0.1-0.3 μm average particle diameter measured by using dynamic scattered light, ≤1.50 particle diameter distribution and a spherical particle shape) is capable of forming a regular structure (a crystal latticelike structure formed when filling a uniform powder, preferably a regular structural layer emitting reflected diffracted light) and has the UV selective reflectivity capable of reflecting light in regions of UVB to UVA preferably at 250-400 nm wavelength when coated (coating of a solid surface, especially a skin surface with a monodisperse dispersion and evaporation of a volatile dispersion medium).
Inventors:
Yukio Inomata
Yuzo Kawada
Yuzo Kawada
Application Number:
JP17384997A
Publication Date:
October 06, 2003
Filing Date:
June 30, 1997
Export Citation:
Assignee:
Kao Corporation
International Classes:
A61K8/00; A61Q17/04; C09K3/00; (IPC1-7): C09K3/00; A61K7/42
Domestic Patent References:
| JP558841A | ||||
| JP5306314A | ||||
| JP7133232A | ||||
| JP1112148A | ||||
| JP5757260A | ||||
| JP5681319A | ||||
| JP59179609A | ||||
| JP7315859A | ||||
| JP977503A | ||||
| JP5221841A | ||||
| JP9143030A | ||||
| JP7258058A | ||||
| JP9104822A |
Attorney, Agent or Firm:
Arga Patent Office (4 outside)
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