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. 04, 2022
Filed:
Dec. 15, 2017
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Monica Haag, Ludwigshafen, DE;
Stephan Deuerlein, Ludwigshafen, DE;
Holger Barthel, Ludwigshafen, DE;
Volker Klock, Ludwigshafen, DE;
Roland Krauss, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 48/00 (2019.01); B29C 48/63 (2019.01); B29C 48/68 (2019.01); B29C 48/395 (2019.01); B29C 48/535 (2019.01); B29C 48/625 (2019.01); B29C 48/685 (2019.01); B29B 7/42 (2006.01); C08J 3/075 (2006.01); C08L 101/14 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/022 (2019.02); B29B 7/422 (2013.01); B29B 7/429 (2013.01); B29C 48/397 (2019.02); B29C 48/535 (2019.02); B29C 48/625 (2019.02); B29C 48/63 (2019.02); B29C 48/681 (2019.02); B29C 48/687 (2019.02); C08J 3/075 (2013.01); C08L 101/14 (2013.01); B29K 2105/0061 (2013.01); C08J 2333/06 (2013.01);
Abstract
A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.