Patent · US Active

Process for classifying water-absorbing polymer beads

US9550213B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

BASF SE

Inventors

Karl J. Possemiers · Schilde, BE
Thomas Pfeiffer · Kumhausen, DE
Matthias Weismantel · Bad Orb, DE
Rüdiger Funk · Niedernhausen, DE
Monte Peterson · Pearland, US
Sven Serneels · Township of Washington, US
Jeffrey Johnson · Lake Jackson, US
Ronny De Kaey · Mortsel, BE

Key dates

Filing date	Mar 18, 2014
Grant date	Jan 24, 2017
Priority date	—
Expiry date	Mar 18, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A process for classifying water-absorbing polymer particles, wherein screens having different mesh sizes are used before and after surface postcrosslinking to remove the undersize (fines).

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