	US 12,262,714 B2
	Superabsorbent polymer and preparation method thereof
Haesung Yun, Daejeon (KR); Hyungsam Choi, Daejeon (KR); Dong Hyun Kim, Daejeon (KR); Seonjung Jung, Daejeon (KR); Ji Seok Lee, Daejeon (KR); Jin Woo Lee, Daejeon (KR); Jun Kyu Kim, Daejeon (KR); Byungguk Kim, Daejeon (KR); and Sanggon Kim, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/774,202
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Nov. 13, 2020, PCT No. PCT/KR2020/015821 § 371(c)(1), (2) Date May 4, 2022, PCT Pub. No. WO2021/096230, PCT Pub. Date May 20, 2021.
Claims priority of application No. 10-2019-0145146 (KR), filed on Nov. 13, 2019; application No. 10-2020-0054684 (KR), filed on May 7, 2020; and application No. 10-2020-0151154 (KR), filed on Nov. 12, 2020.
Prior Publication US 2022/0346379 A1, Nov. 3, 2022
Int. Cl. C08F 220/60 (2006.01); A01N 47/44 (2006.01); A01P 1/00 (2006.01); A61L 15/24 (2006.01); A61L 15/46 (2006.01); A61L 15/60 (2006.01); C08F 220/06 (2006.01); C08J 3/24 (2006.01)

CPC A01N 47/44 (2013.01) [A01P 1/00 (2021.08); A61L 15/24 (2013.01); A61L 15/46 (2013.01); A61L 15/60 (2013.01); C08F 220/06 (2013.01); C08J 3/245 (2013.01); A61L 2300/404 (2013.01); C08J 2333/02 (2013.01)]

11 Claims

1. A superabsorbent polymer comprising:

a base polymer powder comprising a crosslinked polymer of water-soluble ethylene-based unsaturated monomers having acidic groups of which at least a part are neutralized, and a polymerizable antimicrobial monomer; and

a surface crosslinked layer formed on the base polymer powder, in which the crosslinked polymer is additionally crosslinked by a surface crosslinking agent;

wherein the polymerizable antimicrobial monomer comprises one or more of guanidine acrylate and salts thereof.