The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2023
Filed:
Mar. 22, 2019
Raw material for cosmetic and oil-in-water emulsion cosmetic comprising core-corona polymer particle
Applicant:
Shiseido Company, Ltd., Tokyo, JP;
Inventors:
Yuki Sugiyama, Kanagawa, JP;
Ryushi Fukuhara, Kanagawa, JP;
Assignee:
Shiseido Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 8/02 (2006.01); A61K 8/06 (2006.01); A61K 8/85 (2006.01); A61Q 19/00 (2006.01);
U.S. Cl.
CPC ...
A61K 8/0241 (2013.01); A61K 8/06 (2013.01); A61K 8/85 (2013.01); A61Q 19/00 (2013.01);
Abstract
Provided are: a core-corona polymer particle excellent in emulsion stability and feeling of use, and a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising the particle. Certain embodiments of the present invention provides a core-corona polymer particle obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).