Patent · US Active

Superabsorbent polymer compositions having color stability

US7816426B2 · kind B2 · utility

27Cited by

4References

25Claims

0Family size

Assignee

Evonik Stockhausen GmbH · US

Inventors

Iqbal Ahmed · Bartlesville, US
Mirko Walden · Herten, DE
Brian Michael King · Jonesborough, US
Scott J. Smith · Greensboro, US
Harald Schmidt · Nideggen, DE

Key dates

Filing date	Jul 16, 2007
Grant date	Oct 19, 2010
Priority date	—
Expiry date	May 8, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K3/30
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.

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