Process for producing water-absorbing polymer particles

US9382393B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Norbert Eugen Voll · Worms, DE
• Oskar Stephan · Hockenheim, DE
• Karl J. Possemiers · Schilde, BE
• Matthias Weismantel · Bad Orb, DE
• Rüdiger Funk · Niedernhausen, DE
• Monte Peterson · Pearland, US
• Leo Van Miert · Kapellen, BE
• Rene Callot · Ekeren, BE

Key dates

• Filing date: Sep 19, 2013
• Grant date: Jul 5, 2016
• Expiry date: Sep 19, 2033

Classification

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

Abstract

The invention relates to a process for producing water-absorbing polymer particles, comprising polymerization and drying the resulting polymer gel on a through-circulation belt dryer having at the end of the belt in transport direction a means for guiding the dried polymer gel down towards a means for crushing the dried polymer gel.