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:
Jun. 20, 2023
Filed:
Jul. 06, 2018
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Ruediger Funk, Luwigshafen, DE;
Thomas Pfeiffer, Ludwigshafen, DE;
Matthias Weismantel, Ludwigshafen, DE;
Monte Alan Peterson, Freeport, TX (US);
Karl Possemiers, Antwerp, BE;
Ronny De Kaey, Antwerp, BE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/12 (2006.01); B07B 1/46 (2006.01); C08J 3/075 (2006.01); C08J 3/24 (2006.01);
U.S. Cl.
CPC ...
C08J 3/12 (2013.01); B07B 1/46 (2013.01); C08J 3/075 (2013.01); C08J 3/245 (2013.01); C08J 2300/12 (2013.01); C08J 2300/14 (2013.01); C08J 2333/08 (2013.01);
Abstract
The invention relates to a process for producing superabsorbent polymer particles, comprising surface postcrosslinking, classifying the surface postcrosslinked superabsorbent polymer particles, deagglomerating the separated oversize fraction using a roll crusher and recycling the disintegrated oversize fraction before or into the classification of the surface postcrosslinked superabsorbent polymer particles.