Patent · US Active

Superabsorbents having superior permeability and conveying properties

US8017549B2 · kind B2 · utility

7Cited by

1References

9Claims

0Family size

Assignee

BASF SE

Inventors

Norbert Herfert · Charlotte, US
Martin Wendker · Ludwigshafen am Rhein, DE
Hermann Josef Feise · Kleinniedesheim, DE
Hanno Rüdiger Wolf · Heidelberg, DE
Bill Chiang · Charlotte, US
Guy Thomas Woodrum · Chesapeake, US

Key dates

Filing date	Nov 7, 2007
Grant date	Sep 13, 2011
Priority date	—
Expiry date	Jan 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A superabsorbent having superior permeability and conveying properties comprises a permeability enhancing agent and a cohesion control agent and has a free swell gel bed permeability of at least 15 Darcies and a Hausner ratio in the range of 1.18 to 1.34.

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