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. 25, 2002
Filed:
Aug. 23, 2001
Frédéric Favre, Saint Fons, FR;
Dominique Commereuc, Meudon, FR;
Hélène Olivier-Bourbigou, Rueil-Malmaison, FR;
Lucien Saussine, Croissy sur Seine, FR;
Institut Francais du Petrole, Rueil-Malmaison Cedex, FR;
Abstract
In a process for hydroformylation of olefinically unsaturated compounds using a catalyst based on cobalt and/or rhodium co-ordinated by at least one ligand selected from the group formed by nitrogen-containing or phosphorus-containing ligands used in a non-aqueous ionic solvent, which catalyst is liquid at a temperature of less than 90° C., in which the aldehydes formed are not or are only slightly soluble and which comprises at least one quaternary ammonium and/or phosphonium cation Q and at least one anion A , the improvement of the invention consists in that in the cobalt and/or rhodium complex, the ligand also carries an ionic function (Q′) (A′) where Q and Q′ and/or A and A′ are chemically identical.