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:
Dec. 18, 2018
Filed:
May. 11, 2015
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Assignee:
COVESTRO DEUTSCHLAND AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/36 (2006.01); C07C 201/08 (2006.01); C07C 201/16 (2006.01); B01D 17/04 (2006.01); B01D 17/06 (2006.01);
U.S. Cl.
CPC ...
C07C 209/36 (2013.01); B01D 17/045 (2013.01); B01D 17/06 (2013.01); C07C 201/08 (2013.01); C07C 201/16 (2013.01); B01D 2257/80 (2013.01); Y02P 20/582 (2015.11);
Abstract
The invention concerns a method for producing toluenediamine by hydrogenation of dinitrotoluene in the presence of a catalyst, a dinitrotoluene being used as starting material and being processed by applying an electrical voltage.