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:
Jun. 30, 1992
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Rosemarie Bailliard, Lyons, FR;
Georges Cordier, Francheville, FR;
Jean-Michel Grosselin, Francheville, FR;
Bernard Langlois, Lyons, FR;
Laurent Gilbert, Lyons, FR;
Gerard Forat, Lyons, FR;
Assignee:
Rhone-Poulenc Chimie, Cedex, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564416 ; 564414 ; 564415 ;
Abstract
A process for the hydrogenation of halogenonitro-aromatic compounds wherein said compounds are contacted with a nickel-, cobalt- or iron-based catalyst, preferably Raney nickel, and hydrogen in the presence of a sulfur-containing compound. Preferably, the sulfur-containing compound is a sulfoxide or sulfone, and the molar ratio of the sulfur-containing compound to the catalyst ranges from about 1:1 to 10:1.