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. 20, 1996
Filed:
Oct. 12, 1994
Applicant:
Inventors:
Emmanuel Cadot, Paris, FR;
Michel Lacroix, Lyon, FR;
Annie Commarieu, Pau, FR;
Emmanuel Arretz, Pau, FR;
Assignee:
Elf Aquitaine Production, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568 70 ; 568 69 ;
Abstract
The invention relates to the manufacture of methyl mercaptan by catalytic hydrogenation of dimethyl disulphide on a catalyst based on sulphide(s) of at least one transition metal. The selectivity with respect to methyl mercaptan is considerably improved by working in the presence of water and/or hydrogen sulphide.