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:
Nov. 05, 2002
Filed:
Nov. 01, 2000
Raymond A Hadden, Durham, GB;
Jean M Pearson, Clitheroe, GB;
Lucite International UK Limited, Southampton, GB;
Abstract
A process for the manufacture of an alkyl ester of an aliphatic carboxylic acid comprises the steps of supplying a first feed stream comprising carbon monoxide and an alkene of formula C H to a reactor, supplying a second feed stream comprising an alkyl alcohol, having a formula R—OH where R is an optionally substituted alkyl group, to the reactor, and reacting together said first and second feed streams in the reactor in the presence of a carbonylation catalyst, which catalyses the carbonylation reaction between carbon monoxide and the alkene, to form a product comprising an alkyl alkanoate having the formula C H COOR, such that the ratio of alkyl alcohol to alkyl alkanoate present in the reactor is greater than the ratio of alkyl alcohol to alkyl alkanoate present in an azeotropic mixture of the alkyl alcohol and alkyl alkanoate. The process is particularly useful for the manufacture of methyl propionate by the methoxycarbonylation of ethylene.