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:
Apr. 29, 2014
Filed:
Jul. 27, 2011
Wolfgang Mägerlein, Mannheim, DE;
Jan Eberhardt, Mannheim, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Ulrich Köhler, Mannheim, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Mirko Kreitschmann, Mannheim, DE;
Dominik Herbrecht, Heidelberg, DE;
Wolfgang Mägerlein, Mannheim, DE;
Jan Eberhardt, Mannheim, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
Ulrich Köhler, Mannheim, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Mirko Kreitschmann, Mannheim, DE;
Dominik Herbrecht, Heidelberg, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used has a content of 2-(dimethylaminomethyl)glutaronitrile (DGN) of 300 ppm by weight or less, based on the DMAPN used. Furthermore, the present invention relates to mixtures of DMAPN and DGN, wherein the weight ratio of DMAPN to DGN is in the range from 1 000 000:5 to 1 000 000:250.