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:
Sep. 16, 2014
Filed:
Mar. 15, 2012
Gerrit Waters, Karlsruhe, DE;
Johannes Buettner, Ruhland, DE;
Andreas Raichle, Ludwigshafen, DE;
Markus Hiller, Maxdorf, DE;
Peter Renze, Mannheim, DE;
Michael Herrich, Jannowitz, DE;
Helmut Rueger, Schipkau, DE;
Burkhard Hantel, Schwepnitz, DE;
Arndt Hofmann, Radebeul, DE;
Ruediger Fritz, Bernsdorf, DE;
Kathrin Richter, Dresden, DE;
Holgar Braunsberg, Senftenberg, DE;
Lothar Bruntsch, Grossthiemig, DE;
Gerrit Waters, Karlsruhe, DE;
Johannes Buettner, Ruhland, DE;
Andreas Raichle, Ludwigshafen, DE;
Markus Hiller, Maxdorf, DE;
Peter Renze, Mannheim, DE;
Michael Herrich, Jannowitz, DE;
Helmut Rueger, Schipkau, DE;
Burkhard Hantel, Schwepnitz, DE;
Arndt Hofmann, Radebeul, DE;
Ruediger Fritz, Bernsdorf, DE;
Kathrin Richter, Dresden, DE;
Holgar Braunsberg, Senftenberg, DE;
Lothar Bruntsch, Grossthiemig, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to a process for preparing aromatic amines by hydrogenation of corresponding nitroaromatics by means of hydrogen, and also an apparatus suitable for this purpose. In particular, the invention relates to a process for preparing toluenediamine (TDA) by hydrogenation of dinitrotoluene (DNT).