Patent · US Expired

Superabsorbent polymer with high permeability

US7169843B2 · kind B2 · utility

71Cited by

43References

74Claims

0Family size

Assignee

Stockhausen GmbH · DE

Inventors

Scott J. Smith · Greensboro, US
Mark Joy · Greensboro, US
Whei-Neen Hsu · Greensboro, US
Markus Frank · Baden-Baden, DE

Key dates

Filing date	Apr 25, 2003
Grant date	Jan 30, 2007
Priority date	—
Expiry date	Apr 25, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and high centrifuge retention capacity.

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