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. 16, 1986
Filed:
Mar. 04, 1985
Applicant:
Inventors:
John H Grate, Mountain View, CA (US);
David R Hamm, Mountain View, CA (US);
Donald H Valentine, Jr, Ridgefield, CT (US);
Assignee:
Catalytica Associates, Mountain View, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 24 ; 560 25 ; 560 27 ; 560 28 ; 560 29 ; 560 30 ; 560115 ; 560157 ; 560158 ;
Abstract
This invention relates to a process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a ruthenium catalyst. The selectivity of this process is increased by the use of methanol instead of various other alkanols, e.g. ethanol. Preferably the catalyst is a halide-free ruthenium catalyst, e.g. a ruthenium carbonyl complex.