Method for the continuous production of water absorbent polymer particles

US9327270B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Uwe Stueven · Bad Soden, DE
• Rüdiger Funk · Niedernhausen, DE
• Matthias Weismantel · Bad Orb, DE
• Karl J. Possemiers · Schilde, BE
• Koen Deboel · Wilrijk, BE

Key dates

• Filing date: Jun 24, 2013
• Grant date: May 3, 2016
• Expiry date: Jul 25, 2034

Classification

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

Abstract

A process for continuously preparing water-absorbing polymer beads, comprising the drying of a polymer gel on a forced-air belt dryer, the water content of the polymer gel being used to control the forced-air belt dryer during or after the drying.