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:
Sep. 16, 2025
Filed:
Mar. 24, 2021
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Maxime Huchede, Lyons, FR;
Sandra Chouzier, Deaux, FR;
Assignee:
BASF SE, Ludwigshafen Am Rhein, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 209/26 (2006.01); C07C 209/28 (2006.01); C07C 211/12 (2006.01);
U.S. Cl.
CPC ...
C07C 209/26 (2013.01); C07C 209/28 (2013.01); C07C 211/12 (2013.01);
Abstract
The present invention relates to a process for the preparation of hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst, wherein a Raney nickel catalyst modified by treatment with carbon monoxide or carbon dioxide in a liquid medium is used.