Patent · US Expired

Water-absorbent crosslinked polymers

US7732528B2 · kind B2 · utility

1Cited by

1References

15Claims

0Family size

Assignee

BASF SE

Inventors

Bernhard Steinmetz · Meiningen, DE
Peter W. Carrico · West Point, US
Vernon Lynn Adey · Hamilton, US

Key dates

Filing date	Mar 3, 2006
Grant date	Jun 8, 2010
Priority date	—
Expiry date	Mar 3, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F220/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Water-absorbent crosslinked polymers bearing acid groups, some or all of the acid groups being present as carboxylate groups having at least two different types of cations as counterions, processes for their preparation and mixtures of water-absorbent crosslinked polymers.

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