Patent · US Expired

Cross-linked, water-swellable polymer and method for producing the same

US7393908B2 · kind B2 · utility

7Cited by

4References

6Claims

0Family size

Assignee

BASF SE

Inventors

Wilfried Heide · Freinsheim, DE
Stefan Wickel · Ludwigshafen, DE
Thomas Daniel · Waldsee, DE
Uwe Stuven · Bad Soden, DE

Key dates

Filing date	Oct 17, 2001
Grant date	Jul 1, 2008
Priority date	—
Expiry date	Jan 30, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F220/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a cross-linked, water-swellable polymer that contains polymerized into it moieties of The polymer according to the invention has a balanced property profile as regards absorptivity, gel strength, absorption speed and extractable componenents and can be advantageously produced by a continuous method.

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