Kimberly-clark Worldwide, Inc.

Yusuke Ueda

Vasily Aramovich Topolkaraev

Dave Allen Soerens

Mark Michael Mleziva

Neil T Scholl

WanDuk Lee

Theodore T Tower

Kazuhiro Takahashi

Yuriy Galabura

Austin N Pickett

Karen Goeders

Lori A Eslinger

Megumi Tomioka

Superabsorbent particles have a median size of from about 50 to about 2,000 micrometers and contain a porous network that includes a plurality of nanopores having an average cross-sectional dimension of from about 10 to about 500 nanometers, wherein the superabsorbent particles exhibit a Vortex Time of about 80 seconds or less and a free swell gel bed permeability (GBP) of 5 darcys or more, of 10 darcys or more, of 20 darcys or more, of 30 darcys or more, of 60 darcys or more, or of 90 darcys or more. A method for forming such superabsorbent particles includes forming a composition that contains a superabsorbent polymer and a solvent system; contacting the composition with a non-solvent system to initiate formation of the porous network through phase inversion; removing non-solvent from the composition; and surface crosslinking the superabsorbent particles.

Nanoporous superabsorbent particles

Growing community of inventors

Kyoto, Japan

Yusuke Ueda