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:
May. 24, 1994
Filed:
Sep. 29, 1993
Applicant:
Inventors:
Kannappan Chockalingam, Baton Rouge, LA (US);
Tse-Chong Wu, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560105 ; 560-9 ; 560 20 ; 560 21 ; 560 55 ; 560 56 ; 560100 ; 562406 ;
Abstract
A new process for preparing aliphatic carboxylic acid esters is provided. A substituted aliphatic ether or thioether compound is reacted with carbon monoxide in the presence of an alcohol in anhydrous conditions at a temperature between about 25.degree. C. and about 200.degree. C. An excess of several moles of anhydrous alcohol is preferred. An acid such as hydrochloric acid may also be added. As catalyst, a mixture of palladium or a palladium compound and a copper compound with at least one acid-stable ligand are present.