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:
Feb. 03, 2009
Filed:
Nov. 25, 2003
Damien Bourgeois, Lyons, FR;
Jean-christophe Galland, Lyons, FR;
Blaise Didillon, Francheville, FR;
Philippe Marion, Vernaison, FR;
Damien Bourgeois, Lyons, FR;
Jean-Christophe Galland, Lyons, FR;
Blaise Didillon, Francheville, FR;
Philippe Marion, Vernaison, FR;
Rhodia Polyamide Intermediates, Saint-Fons, FR;
Abstract
The present invention relates to a process for hydrocyanating a hydrocarbon-based compound containing at least one ethylenic unsaturation by reaction in liquid medium with hydrogen cyanide in the presence of a catalyst comprising a metal element chosen from transition metals and an organophosphorus ligand, characterized in that the organophosphorus ligand is a monodentate organophosphorus compound. The present invention is in particular useful for the synthesis of adiponitrile from butadiene.