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:
Jun. 29, 1999
Filed:
Aug. 09, 1996
Mark Julian Howard, North Humberside, GB;
BP Chemicals Limited, London, GB;
Abstract
A carbonylation process which comprises (a) contacting, in a first carbonylation reactor at elevated temperature and pressure, an alcohol having n carbon atoms and/or a reactive derivative thereof with carbon monoxide in a liquid reaction composition comprising a halogen and/or halogen compound promoter and a Group VIII noble metal carbonylation catalyst to produce a carbonylation product comprising a carboxylic acid having n+1 carbon atoms and/or an ester of the carboxylic acid having n+1 carbon atoms and the alcohol having n carbon atoms and/or any anhydride of the carboxylic acid having n+1 carbon atoms, (b) withdrawing from the first carbonylation reactor, an off-gas stream comprising carbon monoxide and optionally halogen and/or halogen compound promoter, and optionally carbonylation production; and (c) contacting in a second carbonylation reactor, the withdrawn off-gas stream with an alcohol having m carbon atoms and/or reactive derivative thereof in the presence of a halogen and/or halogen compound promoter and a heterogenous carbonylation catalyst comprising a supported Group VIII noble metal to produce a further carbonylation product comprising a carboxylic acid having m+1 carbon atoms and/or an ester of the carboxylic acid having m+1 carbon atoms and the alcohol having m carbon atoms and/or an anhydride of the carboxylic acid having m+1 carbon atoms.