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:
Feb. 26, 2002
Filed:
Jun. 11, 2001
Michael Sander, Ruhland, DE;
Ulrich Penzel, Tettau, DE;
Hans Volkmar Schwarz, Waterloo, BE;
Eckhard Ströfer, Mannheim, DE;
Dieter Stützer, Dudenhofen, DE;
Jörn Müller, Ludwigshafen, DE;
Markus Maurer, Ludwigshafen, DE;
Peter Zehner, Ludwigshafen, DE;
Ekkehard Schwab, Neustadt, DE;
Ralf Böhling, Griesheim, DE;
Dominic Vanoppen, Fussgönheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a process for the preparation of amines by hydrogenation of nitro compounds, which comprises carrying out the hydrogenation in a vertical reactor whose length is greater than its diameter, having a downward-facing jet nozzle arranged in the upper region of the reactor through which the starting materials and the reaction mixture are fed in, and having an outlet at any desired point of the reactor, through which the reaction mixture is fed back to the jet nozzle in an external circuit by means of a conveying means, and having flow reversal in the lower region of the reactor.