Method for producing water-absorbent polymer foams

US9120878B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Francisco Javier Lopez Villanueva · Schifferstadt, DE
• Markus Linsenbühler · Heidelberg, DE
• Matthias Weismantel · Bad Orb, DE
• Bernd Siegel · Ludwigshafen, DE
• Timo Baumgaertner · Monsheim, DE
• Michael Fastner · Mannheim, DE

Key dates

• Filing date: Nov 19, 2010
• Grant date: Sep 1, 2015
• Expiry date: Oct 19, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing water-absorbing polymeric foams by polymerization of a foamed aqueous monomer solution or suspension, comprising an ethylenically unsaturated monomer which bears acid groups and may be at least partly neutralized, a crosslinker, a photoinitiator and a surfactant.