Patent · US Active

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

US8529805B2 · kind B2 · utility

1Cited by

7References

8Claims

0Family size

Assignee

BASF SE

Inventors

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

Key dates

Filing date	Oct 2, 2007
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Jul 22, 2028

Classification

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

Abstract

The invention relates to a method for the production of water absorbent polymer particles by polymerizing drops, comprising at least one monomer in a gas phase surrounding the drops, wherein the drops are produced by surrounding a first monomer solution with a second monomer solution and polymerizing the second monomer solution to a higher cross-linked polymer than the first monomer solution.

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