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:
Oct. 03, 2006
Filed:
May. 22, 2003
Lionel Magna, Rueil Malmaison, FR;
Helene Olivier-bourbigou, Rueil Malmaison, FR;
Stephane Harry, Montesson, FR;
Dominique Commereuc, Meudon, FR;
Lionel Magna, Rueil Malmaison, FR;
Helene Olivier-Bourbigou, Rueil Malmaison, FR;
Stephane Harry, Montesson, FR;
Dominique Commereuc, Meudon, FR;
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Abstract
In a process for liquid phase carbonylation of alcohols by carbon monoxide, the carbonylation reaction is carried out in a reaction zone at a temperature of 50° C. to 150° C. at a pressure in the range 0.5 MPa to 20 MPa in the presence of at least one catalyst comprising at least one rhodium and/or iridium complex and a halogenated promoter in at least one non-aqueous ionic liquid comprising at least one salt with general formula QA, in which Qrepresents a quaternary ammonium and/or a quaternary phosphonium cation, said salt having a melting point of less than 90° C.; the non-aqueous ionic liquid containing at least the major portion of the catalyst is separated; and the separated non-aqueous ionic liquid containing at least the major portion of the catalyst is returned to the reaction zone.