Superabsorbent polymer with high permeability

US7795345B2 · kind B2 · utility

Assignee

• Evonik Stockhausen GmbH · US

Inventors

• Scott J. Smith · Greensboro, US
• Mark Joy · Greensboro, US
• Whei-Neen Hsu · Greensboro, US
• Markus Frank · Baden-Baden, DE
• Michael M. Azad · Reidsville, US

Key dates

• Filing date: Nov 22, 2006
• Grant date: Sep 14, 2010
• Expiry date: Apr 26, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and high centrifuge retention capacity.