Superabsorbent composition with tannins for odor control

US8658146B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Franck Furno · Mülheim an der Ruhr, DE
• Laurent Wattebled · Düsseldorf, DE
• Anne Ix-Mund · Kerken, DE
• Harald Schmidt · Nideggen, DE
• Markus Henn · Gelsenkirchen, DE
• Jorg Harren · Baesweiler, DE

Key dates

• Filing date: Sep 24, 2008
• Grant date: Feb 25, 2014
• Expiry date: Oct 23, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/02
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to a water-absorbing composition comprising water-absorbing polymer structures, on the surface of which is at least one tannin fraction which has a number-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, which has a weight-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, or which is a hydrolysable gallotannin.The present invention also relates to a process for the preparation of a water-absorbing composition, the water-absorbing composition obtainable by this process, a composite, a process for the production of a composite, the composite obtainable by this process, chemical products, such as, for example, hygiene articles, the use of a water-absorbing composition or of a composite and the use of a tannin fraction.