Hydrophilic, highly swellable hydrogels

US5731365A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Fritz Engelhardt · Frankfurt am Main, DE
• Norbert Herfert · Charlotte, US
• Uwe Stuven · Bad Soden, DE
• Ulrich Riegel · Landstuhl, DE
• Rüdiger Funk · Niedernhausen, DE
• Detlev Seip · Kelkheim, DE

Key dates

• Filing date: Jul 19, 1995
• Grant date: Mar 24, 1998
• Expiry date: Jul 19, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to hydrophilic, highly swellable hydrogels which are coated with non-reactive, water-insoluble film-forming polymers.