C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 255/04 (2006.01) C07C 253/10 (2006.01)
Patent
CA 2134940
This invention involves a process of hydrocyanation of ethenoid unsaturated nitriles into saturated dinitriles, particularly the hydrocyanation of pentenenitriles into adiponitrile, one of the basic compounds in the production of polyamide 66. More specifically, it involves a process of hydrocyanation of an ethenoid unsaturated aliphatic nitrile by reaction with hydrocyanic acid, in the presence of an aqueous solution of a catalyst consisting of a transition metal compound and a sulphonated phosphine. The process is characterized by the fact that the solution in question also contains a cocatalyst consisting of at least one Lewis acid.
La présente invention concerne un procédé d'hydrocyanation de nitriles à insaturation éthylénique en dinitriles saturés, notamment l'hydrocyanation des pentènenitriles en adiponitrile, l'un des composés de base pour la production du polyamide 66. Elle consiste plus précisément en un procédé d'hydrocyanation d'un nitrile aliphatique à insaturation éthylénique, par réaction avec le cyanure d'hydrogène, en présence d'une solution aqueuse d'un catalyseur comprenant un composé d'un métal de transition et une phosphine sulfonée, caractérisé en ce que ladite solution contient également un cocatalyseur consistant en au moins un acide de Lewis.
Huser Marc
Perron Robert
Rhone-Poulenc Chimie
Robic
LandOfFree
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