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. 18, 2011
Filed:
Oct. 02, 2008
Jean-marie Basset, Caluire et Cuire, FR;
Yves Chauvin, Tours, FR;
Jean-christophe Galland, Lyons, FR;
Gerald Niccolai, Villeurbanne, FR;
Christine Valerio, Villeurbanne, FR;
Christophe Vallee, Villeurbanne, FR;
Jean-Marie Basset, Caluire et Cuire, FR;
Yves Chauvin, Tours, FR;
Jean-Christophe Galland, Lyons, FR;
Gerald Niccolai, Villeurbanne, FR;
Christine Valerio, Villeurbanne, FR;
Christophe Vallee, Villeurbanne, FR;
Rhodia Polyamide Intermediates, Saint-Fons, FR;
Abstract
The present invention relates to the manufacture of nitrile compounds from unsaturated organic compounds by reaction with hydrogen cyanide. It relates more particularly to the manufacture of nitrile compounds of use in the synthesis of adiponitrile, an important chemical intermediate in the manufacture of major chemical compounds, such as hexamethylenediamine and ε-caprolactam. The invention provides a process for the manufacture of organic compounds comprising at least one nitrile functional group by carrying out a hydrocyanation reaction between hydrogen cyanide and an organic compound comprising at least one ethylenic unsaturation. This reaction is carried out in the presence of a catalytic system comprising a metal element chosen from the group consisting of nickel, platinum and palladium and an organophosphorus ligand, the reaction medium additionally comprising an ionic liquid in the liquid state at least at the temperature at which the hydrocyanation reaction is carried out.