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. 11, 2011
Filed:
May. 24, 2007
Jan Eberhardt, Mannheim, DE;
Harald Meiβner, Haβloch, DE;
Bram Willem Hoffer, Heidelberg, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Ekkehard Schwab, Neustadt, DE;
Jan Eberhardt, Mannheim, DE;
Harald Meiβner, Haβloch, DE;
Bram Willem Hoffer, Heidelberg, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
Ekkehard Schwab, Neustadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the reaction is carried out using a suspended catalyst as heterogeneous catalyst and is carried out in the semibatch mode in which the nitrogen compound as one reactant is placed in the reaction vessel and the aldehyde and/or the ketone as the other reactant is added during the course of the reaction and the aldehyde and/or the ketone is added in portions or continuously to the reaction mixture during the course of the reaction as a function of the achieved conversion of the nitrogen compound until a conversion of the nitrogen compound of at least 95% results, and all or part of the catalyst remains in the reaction vessel after the reaction batch and is reused for the next reaction batch.