Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-12-26
2006-12-26
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S407000, C524S730000, C524S779000, C524S795000
Reexamination Certificate
active
07153573
ABSTRACT:
The invention provides a polymer composite particle having superb blending stability even in a W/O emulsion cosmetic, a highly effective ultraviolet protection effect and a good feeling in use. The invention also relates to a method of producing the polymer composite particle and a cosmetic composition containing the polymer composite particle. A preferred polymer composite particle contains a metal oxide coated with a silicone and/or fluorine compound and has an average particle diameter of 1 μm or less, wherein the polymer composite particle is obtained by polymerizing a crosslinking agent with a vinyl monomer contained in an amount of 25% by weight based on 100% by weight of the sum of total of all the monomers and crosslinking agent and wherein the vinyl monomer has a solubility parameter calculated by the Fedors method of less than about 8.9. A preferred cosmetic composition may contain (A) a microparticle metal oxide having an average primary particle diameter of from 0.001 to 0.1 μm, and (B) a flake zinc oxide having an average primary particle size of from 0.1 μm to 1 μm and an average thickness of from 0.01 μm to 0.2 μm, which provides ultraviolet protection ability and visible-light transmittance.
REFERENCES:
patent: 3716505 (1973-02-01), Ohe et al.
patent: 4801445 (1989-01-01), Fukui et al.
patent: 6132861 (2000-10-01), Kang et al.
patent: 6224852 (2001-05-01), Morgan et al.
patent: 6451941 (2002-09-01), Urashima et al.
patent: 6475500 (2002-11-01), Vatter et al.
patent: 6524705 (2003-02-01), O'Lenick et al.
patent: 6599631 (2003-07-01), Kambe et al.
patent: 6610278 (2003-08-01), Kashimoto
patent: 2002/0094439 (2002-07-01), Edelmann et al.
patent: 2002/0197475 (2002-12-01), Edelmann et al.
patent: 0 317 272 (1989-05-01), None
patent: 0 659 786 (1995-06-01), None
patent: 0 887 067 (1998-12-01), None
patent: 4-132702 (1992-05-01), None
patent: 9-208437 (1997-08-01), None
patent: 9-235217 (1997-09-01), None
patent: WO 99/57205 (1999-11-01), None
patent: WO 99/57375 (1999-11-01), None
patent: WO 00/05284 (2000-02-01), None
patent: WO 01/18082 (2001-03-01), None
patent: WO 01/81466 (2001-11-01), None
patent: WO 03/060014 (2003-07-01), None
Patent Abstracts of Japan, JP 02-187402, Jul. 23, 1990 (corr. US 5,420,177).
Patent Abstracts of Japan, JP 57-120514, Jul. 27, 1982.
Patent Abstracts of Japan, JP 09-208437, Aug. 12, 1997.
Patent Abstracts of Japan, JP 2002-121421, Apr. 23, 2002.
Inomata Yukio
Inoue Makoto
Nambu Hiromi
Sugawara Satoshi
Tsuji Makoto
Kao Corporation
Le H. Thi
LandOfFree
Polymer composite particle comprising metal oxide and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymer composite particle comprising metal oxide and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer composite particle comprising metal oxide and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3720359