	US 11,786,884 B2
	Superabsorbent polymers based on copolymers of charged monomers and neutral monomers
Xuedong Song, Alpharetta, GA (US); Kaiyuan Yang, Cumming, GA (US); Todd Ryan Hoare, Ancaster (CA); and Zohreh Jomeh Farsangi, Hamilton (CA)
Assigned to KIMBERLY-CLARK WORLDWIDE, INC., Neenah, WI (US)
Appl. No. 17/917,324
Filed by Kimberly-Clark Worldwide, Inc., Neenah, WI (US); and MCMASTER UNIVERSITY, Hamilton (CA)
PCT Filed Apr. 30, 2020, PCT No. PCT/US2020/030613 § 371(c)(1), (2) Date Oct. 6, 2022, PCT Pub. No. WO2021/221641, PCT Pub. Date Nov. 4, 2021.
Prior Publication US 2023/0130584 A1, Apr. 27, 2023
Int. Cl. B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01)

CPC B01J 20/267 (2013.01) [B01J 20/28004 (2013.01); B01J 20/28016 (2013.01); B01J 20/3021 (2013.01); B01J 20/3078 (2013.01); B01J 20/3221 (2013.01); B01J 2220/68 (2013.01)]

10 Claims

1. A superabsorbent polymer comprising

a copolymer comprising

a major portion of low molecular weight monomers each individually comprising a backbone and a charged moiety;

a minor portion of high molecular weight monomers each individually comprising a backbone and a charged moiety; and

optionally a crosslinker;

wherein an average distance between the backbone and charged moiety of each individual low molecular weight monomer is less than an average distance between the backbone and charged moiety of each individual high molecular weight monomer;

wherein the copolymer lacks structured ordering of the low molecular weight monomers and the high molecular weight monomers.