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. 07, 2014
Filed:
Mar. 09, 2011
Applicants:
Norbert Herfert, Altenstadt, DE;
Thomas Daniel, Waldsee, DE;
Rainer Dobrawa, Stuttgart, DE;
Inventors:
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 44/00 (2006.01); B32B 5/16 (2006.01); C08K 5/36 (2006.01); C08K 7/22 (2006.01); B01J 2/16 (2006.01); B01J 2/04 (2006.01); C08J 7/04 (2006.01); B23B 5/16 (2006.01); B32B 5/02 (2006.01); C08F 220/06 (2006.01); A61F 13/53 (2006.01); C08F 222/10 (2006.01);
U.S. Cl.
CPC ...
B01J 2/04 (2013.01); B32B 2307/726 (2013.01); B01J 2/16 (2013.01); C08J 7/04 (2013.01); A61F 2013/530569 (2013.01); C08F 222/1006 (2013.01); B23B 5/16 (2013.01); A61F 2013/530591 (2013.01); B23B 2307/728 (2013.01); B32B 5/02 (2013.01); C08F 220/06 (2013.01);
Abstract
The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, which comprises coating the water-absorbing polymer particles with at least one sulfinic acid, sulfonic acid and/or salts thereof.