Methods for producing water-absorbent foamed polymer particles

US9574019B2 · 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

Key dates

• Filing date: Nov 22, 2010
• Grant date: Feb 21, 2017
• Expiry date: Jul 14, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing water-absorbing polymer particles, comprising polymerization of a foamed monomer solution or suspension, drying, grinding and classification.