US 12,065,525 B2
Water-soluble copolymer composition
Anne-Laure Brocas, Lacq (FR); Sylvain Bourrigaud, Lacq (FR); and Sylvie Cazaumayou, Lacq (FR)
Assigned to Arkema France, Colombes (FR)
Appl. No. 17/291,468
Filed by Arkema France, Colombes (FR)
PCT Filed Nov. 8, 2019, PCT No. PCT/FR2019/052667
§ 371(c)(1), (2) Date May 5, 2021,
PCT Pub. No. WO2020/095003, PCT Pub. Date May 14, 2020.
Claims priority of application No. 1860275 (FR), filed on Nov. 8, 2018.
Prior Publication US 2021/0395414 A1, Dec. 23, 2021
Int. Cl. C08F 212/08 (2006.01); C08F 2/38 (2006.01); C08F 220/06 (2006.01); C08F 220/18 (2006.01); C08K 5/32 (2006.01)
CPC C08F 212/08 (2013.01) [C08F 2/38 (2013.01); C08F 220/06 (2013.01); C08F 220/18 (2013.01); C08F 220/1804 (2020.02); C08K 5/32 (2013.01); C08F 2438/01 (2013.01); C08F 2438/02 (2013.01); C08F 2438/03 (2013.01)] 12 Claims
 
1. A composition comprising a random copolymer comprising units derived from the following monomers:
styrene, from 28% to 45% by weight, limits included;
methacrylic acid, from 10% to 40% by weight, limits included;
acrylic acid, from 0.5% to 5% by weight, limits included;
butyl acrylate, from 18% to 35% by weight, limits included.