Patent · US Active

Method for the production of absorbent polymer particles by polymerizing drops of a monomer solution

US10450395B2 · kind B2 · utility

0Cited by

9References

9Claims

0Family size

Assignee

BASF SE

Inventors

Dennis Lösch · Altrip, DE
Matthias Weismantel · Bad Orb, DE
Marco Krüger · Mannheim, DE
Antje Ziemer · Mannheim, DE

Key dates

Filing date	Aug 1, 2013
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Jan 7, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2989
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing water-absorbing polymer beads by polymerizing droplets comprising at least one monomer in a gas phase surrounding the droplets, the droplets being obtained by enveloping a first monomer solution with a second monomer solution and polymerizing the second monomer solution and polymerizing to give a more highly crosslinked polymer than the first monomer solution.

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