Patent · US Active

Process for metering superabsorbents

US8371475B2 · kind B2 · utility

0Cited by

11References

11Claims

0Family size

Assignee

BASF SE

Inventors

Norbert Herfert · Charlotte, US
Herman Josef Feise · Kleinniedesheim, DE
Hanno Rüdiger Wolf · Heidelberg, DE

Key dates

Filing date	Sep 12, 2008
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Jan 25, 2030

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F13/15764
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Superabsorbents are metered by a process using a screw conveyor, wherein the superabsorbent is selected, or treated with a cohesion control agent, to have an unconfined yield strength of from 0.75 to 1.5 kPa at consolidation stress of 6 kPa.

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