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:
Jan. 20, 2026
Filed:
Sep. 06, 2021
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/00 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); C08F 220/06 (2006.01); C08F 222/10 (2006.01); C08J 3/075 (2006.01); C08J 3/24 (2006.01); C08K 3/22 (2006.01); C08K 5/17 (2006.01);
U.S. Cl.
CPC ...
B01J 20/261 (2013.01); B01J 20/28004 (2013.01); B01J 20/28047 (2013.01); C08F 220/06 (2013.01); C08F 222/103 (2020.02); C08J 3/075 (2013.01); C08J 3/245 (2013.01); C08K 3/22 (2013.01); C08K 5/175 (2013.01); B01J 2220/68 (2013.01); C08K 2003/2227 (2013.01);
Abstract
The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, drying the formed polymer gel, grinding the dried polymer gel, classifying and thermally surface post-crosslinking the polymer particles, wherein the monomer solution comprises a chelating agent and an aluminum salt.