Patent · US Expired

Water-swellable, hydrophilic polymer compositions

US6107432A · kind A · utility

12Cited by

13References

9Claims

0Family size

Assignee

BASF SE

Inventors

Fritz Engelhardt · Frankfurt am Main, DE
Rüdiger Funk · Niedernhausen, DE
Norbert Herfert · Charlotte, US
Matthias Weismantel · Bad Orb, DE

Key dates

Filing date	May 26, 1998
Grant date	Aug 22, 2000
Priority date	—
Expiry date	May 26, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F20/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to water-swellable, hydrophilic polymer compositions which can be prepared by free-radical (co)polymerization of one or more hydrophilic monomers in the presence of starch and/or chemically modified starch, wherein a free-radical initiator which forms three or more free radical sites per molecule is used.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.