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:
Jan. 05, 1988
Filed:
Dec. 20, 1985
Applicant:
Inventors:
Thirumurti Narayan, Grosse Ile, MI (US);
Peter T Kan, Plymouth, MI (US);
Assignee:
BASF Corporation, Parsippany, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564422 ;
Abstract
The invention relates to an improved process for the preparation of toluene diamine from dinitrotoluene involving hydrogenation of dinitrotoluene with hydrogen gas at elevated temperatures and super atmospheric pressure in the presence of a supported nickel catalyst and carbon monoxide ranging from 0.001 to 0.1 volume percent. The rate of hydrogenation, product quality and yield are improved when hydrogen spiked with small amounts of carbon monoxide was used.