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:
Sep. 15, 1987
Filed:
Apr. 25, 1986
Applicant:
Inventors:
Howard Alper, Ottawa, CA;
David J Smith, Camberley, GB;
Assignee:
The British Petroleum Company p.l.c., London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 24 ; 560 22 ; 560 25 ; 560 29 ; 560 30 ; 560 31 ; 560 32 ; 560115 ; 560157 ; 560163 ;
Abstract
Carbamate esters are produced by reacting at ambient or elevated temperature an amine with carbon monoxide and an alcohol in the presence of a protonic acid, a dehydrating agent, for example a molecular sieve, and a catalyst comprising (a) at least one metal selected from the group palladium, rhodium, ruthenium, iridium and cobalt, and (b) at least one of the metals copper, molybdenum and iron, the components (a) and (b) being in the form of elemental metals or compounds thereof. The presence of the dehydrating agent reduces the formation of by-product carbon dioxide.