Patent · US Expired

Hydrophilic, swellable polymers

US5182312A · kind A · utility

4Cited by

5References

6Claims

0Family size

Assignee

Cassella Aktiengesellschaft · DE

Inventors

Friedrich Engelhardt · Frankfurt, DE
Gerlinde Ebert · Rödermark, DE

Key dates

Filing date	Sep 24, 1990
Grant date	Jan 26, 1993
Priority date	—
Expiry date	Sep 24, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F20/04
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The present invention relates to hydrophilic, swellable polymers which consists of radicals of the general formula I ##STR1## wherein R.sup.1 to R.sup.3 are defined as stated in the description, and of radicals of a crosslinking agent which have originated from monomers having at least two olefinically unsaturated double bonds, and which are characterized in that they are in the form of a highly porous, foam-like polyhedral structure, their preparation and their use as absorption agents for water and aqueous solutions.

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