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:
Jul. 30, 2013
Filed:
Oct. 17, 2011
Jan Eberhardt, Mannheim, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Johann-peter Melder, Böhl-lggelheim, DE;
Gerhard Fritz, Dannstadt-Schauernheim, DE;
Volkmar Menger, Neustadt, DE;
Thomas Hill, Ludwigshafen, DE;
Jan Eberhardt, Mannheim, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Johann-Peter Melder, Böhl-lggelheim, DE;
Gerhard Fritz, Dannstadt-Schauernheim, DE;
Volkmar Menger, Neustadt, DE;
Thomas Hill, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing a diamine from a corresponding aminoalkyl nitrile, which is prepared by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, comprising the steps: a) introduction of the corresponding monoamine into a continuously conveyed reaction stream; b) introduction of the corresponding alkenyl nitrile into the reaction stream, with this already comprising the aminoalkyl nitrile on addition; c) reaction of the reaction stream in a first reaction region; d) at least partial transfer of the reaction stream into at least one second reaction region for further reaction; e) discharge of the reaction stream from the second reaction region after the reaction; f) introduction of the reaction stream discharged in step (a) into a reduction region; and g) reduction of the aminoalkyl nitrile present in the reaction stream to the corresponding diamine.