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. 25, 2019
Filed:
Nov. 30, 2016
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Andreas Weickgenannt, Mannheim, DE;
Sandra Kramp, Mannheim, DE;
Jan-Oliver Weidert, Schifferstadt, DE;
Alexander Panchenko, Ludwigshafen, DE;
Artur Kozicki, Bad Duerkheim, DE;
Ralph Busch, Worms, DE;
Assignee:
BASF SE, Ludwigshafen am Rhein, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 209/88 (2006.01); C07C 211/36 (2006.01);
U.S. Cl.
CPC ...
C07C 209/88 (2013.01); C07C 211/36 (2013.01); C07C 2521/06 (2013.01); C07C 2523/46 (2013.01); C07C 2601/14 (2017.05);
Abstract
A method for isomerizing a starting mixture comprising 2,4-diamino-1-methylcyclohexane, 2,4-MDACH for short, 2,6-diamino-1-methylcyclohexane, 2,6-MDACH for short, or mixtures thereof, wherein the isomerization is carried out in the presence of a supported catalyst with zirconium dioxide as support and ruthenium as active metal.