Process for producing water-absorbing polymer particles

US8883961B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Monte Peterson · Pearland, US
• Filip Mees · Lake Jackson, US
• John Perry Guentzel · Beach City, US
• Justin Martin · Grobbendonk, BE
• Dominicus van Esbroeck · Nanjing, CN
• Karl J. Possemiers · Schilde, BE
• Leo Van Miert · Kapellen, BE
• Oskar Stephan · Hockenheim, DE
• Rüdiger Funk · Niedernhausen, DE
• Matthias Weismantel · Bad Orb, DE

Key dates

• Filing date: Aug 26, 2013
• Grant date: Nov 11, 2014
• Expiry date: Aug 26, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing water-absorbing polymer particles, comprising thermal postcrosslinking in a contact dryer having external heated outer surfaces.