Water-absorbing polymers having interstitial compounds, a process for their production, and their use

US6623848B2 · kind B2 · utility

Assignee

• Stockhausen GmbH & Co. KG · DE

Inventors

• Helmut Brehm · Krefeld, DE
• Jorg Harren · Baesweiler, DE
• Jörg Issberner · Lügde, DE
• Richard Mertens · Krefeld, DE

Key dates

• Filing date: Feb 14, 2002
• Grant date: Sep 23, 2003
• Expiry date: Feb 14, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/257
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to absorvents for water and aqueous liquids, which are vased on water-swell-able, yet water-insoluble polymers wherein cyclodextrin or cyclodextrin derivatives and zeolites high in silicon have been incorporated ionically, covalently and/or as a result of mechanical inclusion.