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. 02, 2016
Filed:
Apr. 25, 2013
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Samuel Neto, Mannheim, DE;
Ruediger Fritz, Bernsdorf, DE;
Renate Hempel, Ruhland, DE;
Holger Allardt, Schwarzheide, DE;
Barbara Becker, Mannheim, DE;
Julia Leschinski, Ixelles, BE;
Sebastian Ahrens, Wiesloch, DE;
Heinrich Hermann, Cologne, DE;
Mirko Haendel, Neunkirchen-Seelscheid, DE;
Juergen Poehlmann, Cologne, DE;
Assignees:
BASF SE, Ludwigshafen, DE;
Josef Meissner GmbH & Co. KG, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 205/00 (2006.01); C07C 201/00 (2006.01); C07C 205/06 (2006.01); C07C 201/06 (2006.01);
U.S. Cl.
CPC ...
C07C 205/06 (2013.01); C07C 201/06 (2013.01);
Abstract
The invention relates to a process for scrubbing a crude mixture comprising dinitrotoluene, nitric acid, nitrogen oxides and sulfuric acid obtained in the nitration of toluene after the nitrating acid has been separated off, which comprises two scrubbing steps (SS-I) and (SS-II), wherein