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:
Jan. 30, 1996
Filed:
Nov. 03, 1994
Applicant:
Inventors:
Marc Huser, Villeurbanne, FR;
Robert Perron, Charly, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558338 ; 558355 ;
Abstract
Ethylenically unsaturated aliphatic nitriles, for example the linear pentenenitriles, are converted/hydrocyanated into their corresponding dinitriles, for example adiponitrile, by reacting such nitriles with hydrogen cyanide, in an aqueous reaction medium which comprises (1) a catalytically effective amount of a transition metal compound and a sulfonated phosphine, together with (2) a cocatalytically effective amount of at least one Lewis acid; the Lewis acid cocatalyst promotes the linearity of the final product dinitriles and/or prolongs the useful life of the catalyst.