US 11,052,034 B2
Cosmetic for correcting bumps and dips
Rikako Mori, Tokyo (JP); Shunsuke Yamaguchi, Tokyo (JP); and Takamasa Satonaka, Aichi (JP)
Assigned to NIKKO CHEMICALS CO., LTD., Tokyo (JP); COSMOS TECHNICAL CENTER CO., LTD., Tokyo (JP); and TOAGOSEI CO., LTD., Tokyo (JP)
Appl. No. 16/304,318
Filed by NIKKO CHEMICALS CO., LTD., Tokyo (JP); COSMOS TECHNICAL CENTER CO., LTD., Tokyo (JP); and TOAGOSEI CO., LTD., Tokyo (JP)
PCT Filed May 25, 2017, PCT No. PCT/JP2017/019474
§ 371(c)(1), (2) Date Nov. 26, 2018,
PCT Pub. No. WO2017/204281, PCT Pub. Date Nov. 30, 2017.
Claims priority of application No. JP2016-106166 (JP), filed on May 27, 2016.
Prior Publication US 2019/0133915 A1, May 9, 2019
Int. Cl. A61K 8/81 (2006.01); A61Q 1/02 (2006.01); A61Q 1/00 (2006.01); A61K 8/02 (2006.01); A61K 8/29 (2006.01); A61Q 19/08 (2006.01)
CPC A61K 8/8152 (2013.01) [A61K 8/025 (2013.01); A61K 8/29 (2013.01); A61K 8/8147 (2013.01); A61Q 1/00 (2013.01); A61Q 1/02 (2013.01); A61Q 19/08 (2013.01); A61K 2800/412 (2013.01); A61K 2800/43 (2013.01); A61K 2800/546 (2013.01)] 8 Claims
 
1. A cosmetic composition for unevenness correction, comprising:
(a) crosslinked polyacrylate water-absorbing polymer particles comprising one or more monomers selected from the group consisting of acrylic acid, methacrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, and salts thereof, and one or more crosslinking agents selected from the group consisting of polyethylene glycol diacrylate, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, and methylenebisacrylamide, wherein the polymer particles:
(i) have an average swollen particle size in ion-exchanged water of 10 μm to 150 μm and an average dry particle size of 10 μm to 50 μm as measured with a laser diffraction-scattering type particle size distribution measuring device; and
(ii) have a water absorbency of 5 g/g to 50 g/g;
and
(b) a cosmetic ingredient(s),
wherein the crosslinked polyacrylate water-absorbing polymer particles are 0.1% to 10.0% by mass of the cosmetic composition.