Water-absorbing polymer structures with improved absorption properties

US8071202B2 · kind B2 · utility

Assignee

• Evonik Stockhausen GmbH · US

Inventors

• Franck Furno · Mülheim an der Ruhr, DE
• Harald Schmidt · Nideggen, DE
• Peter Herbe · Kevelaer, DE
• Ursula Nielinger · Krefeld, DE
• Michael Keup · Essen, DE

Key dates

• Filing date: Apr 21, 2006
• Grant date: Dec 6, 2011
• Expiry date: Oct 18, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24942
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to a process for production of water-absorbing polymer structures comprising the process steps of providing an untreated, water-absorbing polymer structure (Pu) with a retention of at least about 35 g/g; and bringing this water-absorbing untreated polymer structure (Pu) into contact with a permeability-increasing agent. The invention further relates to the water-absorbing polymer structures obtainable by this process, water-absorbing polymer structures, a composite, a process for production of a composite, a composite obtainable by this process, chemical products comprising water-absorbing polymer structures or a composite as well as the use of water-absorbing polymer structures or of the composite in chemical products.