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:
Dec. 05, 2017
Filed:
Feb. 03, 2012
Applicants:
Thomas Daniel, Waldsee, DE;
Volker Braig, Weinheim-Lützelsachsen, DE;
Asif Karim, Mannheim, DE;
Inventors:
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 20/10 (2006.01); C09K 3/00 (2006.01); B01J 20/26 (2006.01); B29C 49/00 (2006.01); B01J 20/30 (2006.01); B01J 20/28 (2006.01);
U.S. Cl.
CPC ...
B01J 20/3021 (2013.01); B01J 20/264 (2013.01); B01J 20/267 (2013.01); B01J 20/28004 (2013.01); B01J 20/28047 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B01J 2220/68 (2013.01);
Abstract
The invention relates to a process for producing water-absorbing polymer particles with high free swell rate, comprising the steps of polymerization, drying, grinding, classification and thermal surface postcrosslinking, remoisturization and drying again.