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:
Aug. 13, 2024
Filed:
Sep. 17, 2019
Basf SE, Ludwigshafen, DE;
Rene Callot, Antwerp, BE;
Ruediger Funk, Ludwigshafen, DE;
Marco Krueger, Ludwigshafen, DE;
Thomas Pfeiffer, Ludwigshafen, DE;
Karl Possemiers, Antwerp, BE;
Juergen Schroeder, Ludwigshafen, DE;
Matthias Weismantel, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt drier, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt drier by means of an oscillating conveyor belt, the underside of the revolving conveyor belt is freed of adhering polymer gel by means of at least one stripper device, and the underside of the revolving conveyor belt is sprayed with water.