The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Aug. 01, 2013
Method for the production of absorbent polymer particles by polymerizing drops of a monomer solution
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Dennis Lösch, Altrip, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Marco Krüger, Mannheim, DE;
Antje Ziemer, Mannheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/00 (2006.01); C08F 220/10 (2006.01); A61L 15/60 (2006.01); C08F 2/00 (2006.01); C08F 2/01 (2006.01); C08F 2/10 (2006.01); C08F 2/16 (2006.01); C08F 2/18 (2006.01); C08F 220/06 (2006.01); C08F 222/10 (2006.01);
U.S. Cl.
CPC ...
C08F 220/10 (2013.01); A61L 15/60 (2013.01); C08F 2/00 (2013.01); C08F 2/01 (2013.01); C08F 2/10 (2013.01); C08F 2/16 (2013.01); C08F 2/18 (2013.01); C08F 220/06 (2013.01); C08F 222/1006 (2013.01); Y10T 428/2982 (2015.01); Y10T 428/2989 (2015.01);
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.