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:
Jul. 16, 2024
Filed:
Feb. 21, 2020
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Monte Alan Peterson, Freeport, TX (US);
Ruediger Funk, Ludwigshafen, DE;
Matthias Weismantel, Ludwigshafen, DE;
Juergen Schroeder, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C 4/42 (2006.01); A61L 15/60 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B02C 4/02 (2006.01); B02C 4/28 (2006.01); B02C 4/40 (2006.01); C08F 2/06 (2006.01); C08F 220/06 (2006.01);
U.S. Cl.
CPC ...
C08F 220/06 (2013.01); A61L 15/60 (2013.01); B01J 20/267 (2013.01); B01J 20/28004 (2013.01); B01J 20/3021 (2013.01); B02C 4/02 (2013.01); B02C 4/286 (2013.01); B02C 4/40 (2013.01); C08F 2/06 (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, drying the resulting polymer gel and grinding the dried polymer gel with a roll mill, wherein the rolls of the roll mill are cleaned by reducing the feed rate to the roll mill, and if the deflection and/or the power consumption increases above a setpoint, operating the roll mill with reduced feed, and increasing the feed rate to the roll mill.