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. 12, 2021
Filed:
Dec. 12, 2018
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Thomas Daniel, Waldsee, DE;
Norbert Herfert, Shanghai, CN;
Stephan Bauer, Hochheim, DE;
Katrin Baumann, Mannheim, DE;
Birgit Reinhard, Limburgerhof, DE;
Jürgen Freiberg, Lampertheim, DE;
Christophe Bauduin, Plankstadt, DE;
Katarzyna Dobrosielska-Oura, Ludwigshafen, DE;
Michael A. Mitchell, Waxhaw, NC (US);
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 3/24 (2006.01); C08J 9/00 (2006.01); A61L 15/22 (2006.01); A61L 15/42 (2006.01); A61L 15/60 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); C08F 6/00 (2006.01); C08F 220/06 (2006.01); C08F 222/10 (2006.01);
U.S. Cl.
CPC ...
C08J 3/245 (2013.01); A61L 15/225 (2013.01); A61L 15/425 (2013.01); A61L 15/60 (2013.01); B01J 20/267 (2013.01); B01J 20/28004 (2013.01); B01J 20/28011 (2013.01); B01J 20/28019 (2013.01); C08F 6/008 (2013.01); C08F 220/06 (2013.01); C08J 3/247 (2013.01); C08J 9/00 (2013.01); C08F 222/1006 (2013.01); C08J 2207/12 (2013.01); C08J 2333/02 (2013.01);
Abstract
The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles by coating of water-absorbent polymer particles having a content of residual monomers in the range from 0.03 to 15% by weight with at least one surface-postcrosslinker and thermal surface-postcrosslinking at temperatures in the range from 100 to 180° C.