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:
Sep. 10, 2024
Filed:
Apr. 09, 2019
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Norbert Herfert, Shanghai, CN;
Bootsara Parchana, Rayong, TH;
Sunantha Kaenthong, Rayong, TH;
Stephan Bauer, Ludwigshafen, DE;
Thomas Daniel, Ludwigshafen, DE;
Katrin Baumann, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C08F 220/06 (2006.01);
U.S. Cl.
CPC ...
B01J 20/267 (2013.01); B01J 20/28016 (2013.01); B01J 20/3021 (2013.01); B01J 20/3085 (2013.01); C08F 220/06 (2013.01); C08F 2800/10 (2013.01); C08F 2810/20 (2013.01);
Abstract
The invention relates to a process for producing long-term color stable superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises at least 0.01% by weight of 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof and at least 0.01% by weight of 2-hydroxy-2-sulfonatoacetic acid or a salt thereof.