Patent · US Active

Regulation of a process for producing water-absorbing polymer particles in a heated gas phase

US8183331B2 · kind B2 · utility

4Cited by

6References

10Claims

0Family size

Assignee

BASF SE

Inventors

Dennis Lösch · Altrip, DE
Marco Krüger · Mannheim, DE
Matthias Weismantel · Bad Orb, DE
Wilfried Heide · Freinsheim, DE

Key dates

Filing date	Oct 29, 2007
Grant date	May 22, 2012
Priority date	—
Expiry date	Jul 3, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/93
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

In a process for producing water-absorbing polymeric particles which comprises generating droplets comprising monomers, polymerizing the monomers in a heated gas phase surrounding the droplets and flowing the gas through the polymerization reactor, the temperature of the gas leaving the polymerization reactor is closed-loop controlled.

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