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. 28, 2025
Filed:
Nov. 04, 2019
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Monte Alan Peterson, Freeport, TX (US);
Ronny De Kaey, Antwerp, BE;
Karl Possemiers, Antwerp, BE;
Juergen Schroeder, Ludwigshafen, DE;
Ruediger Funk, Ludwigshafen, DE;
Matthias Weismantel, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 51/41 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); B01J 20/26 (2006.01); B01J 20/30 (2006.01);
U.S. Cl.
CPC ...
C07C 51/412 (2013.01); B01J 19/0053 (2013.01); B01J 19/24 (2013.01); B01J 19/2435 (2013.01); B01J 19/2465 (2013.01); B01J 20/267 (2013.01); B01J 20/3021 (2013.01); B01J 2204/005 (2013.01); B01J 2219/185 (2013.01); B01J 2219/1942 (2013.01); B01J 2219/1945 (2013.01); B01J 2220/68 (2013.01);
Abstract
The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises partly neutralized acrylic acid formed by continuous mixing of acrylic acid and an aqueous solution of a base, the apparatus for preparing the partly neutralized acrylic acid comprises a vessel (B), and the vessel (B) has a cylindrical shape and a torispherical bottom.