Patent · US Active

Process for producing water-absorbing polymer particles with high free swell rate

US9950306B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Markus Braun · Mannheim, DE
Matthias Weismantel · Bad Orb, DE

Key dates

Filing date	Jul 9, 2012
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Mar 6, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F230/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for producing water-absorbing polymer particles with high free swell rate by polymerizing a monomer solution or suspension comprising an ethylenically unsaturated monomer bearing acid groups, a crosslinker, an initiator and an ethylenically unsaturated ionic surfactant.

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