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. 30, 2024
Filed:
Jul. 20, 2018
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Rüdiger Funk, Ludwigshafen, DE;
Matthias Weismantel, Ludwigshafen, DE;
Monte Alan Peterson, Freeport, TX (US);
Patrick Neal Hamilton, Freeport, TX (US);
Ronny De Kaey, Antwerp, BE;
Karl Possemiers, Antwerp, BE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07B 13/16 (2006.01); B01J 20/26 (2006.01); B07B 4/08 (2006.01); B07B 11/02 (2006.01); C08F 20/06 (2006.01);
U.S. Cl.
CPC ...
B07B 13/16 (2013.01); B01J 20/261 (2013.01); B07B 4/08 (2013.01); B07B 11/02 (2013.01); C08F 20/06 (2013.01); B01J 2220/68 (2013.01); B07B 2220/02 (2013.01);
Abstract
The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve.