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:
Aug. 18, 1987
Filed:
Dec. 09, 1985
Applicant:
Inventors:
John H Grate, Mountain View, CA (US);
David R Hamm, Mountain View, CA (US);
Assignees:
Catalytica Associates, Mountain View, CA (US);
Haldor Topsoe A/S, Copenhagen, DK;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 25 ; 560 24 ; 560 26 ; 560 27 ; 560 28 ; 560 29 ; 560 30 ; 560 31 ; 560 32 ; 560 33 ; 560115 ; 560157 ; 560158 ; 560160 ; 560163 ; 560165 ;
Abstract
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 catalyst comprising rhodium, as a metal or compound, is disclosed. In the process of this invention, the rate of conversion and selectivity to urethane is increased by providing a rhodium catalyst comprising a polyamino ligand having at least two tertiary amino groups capable of coordinating with rhodium.