Coated superabsorbent polymer particles and processes therefore

US8945419B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Torsten Lindner · Schwalbach am Taunus, DE
• Axel Meyer · Frankfurt am Main, DE
• Mattias Schmidt · Idstein, DE

Key dates

• Filing date: Jul 19, 2010
• Grant date: Feb 3, 2015
• Expiry date: Jan 31, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/00
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Superabsorbent material, comprising first superabsorbent polymers, coated with second clay-crosslinked superabsorbent polymers, said second clay-crosslinked superabsorbent polymers being obtainable by the step of polymerization of a solution/dispersion of polymerizable compounds and clay particles, to obtain said second superabsorbent polymers, crosslinked by said clay particles, of a weight average largest particle dimension of less than 800 nm.