Method for producing aliphatic alpha-, omega-diamines

Details Method for producing aliphatic alpha-, omega-diamines Method for producing aliphatic alpha-, omega-diamines

C - Chemistry, Metallurgy

07

C

C07C 209/48 (2006.01) B01J 23/745 (2006.01) C07C 211/12 (2006.01)

Patent

CA 2322187

The invention relates to a method for producing aliphatic alpha-, omega- diamines by hydrogenating aliphatic alpha-, omega-dinitriles in the presence of a catalyst, characterised in that the catalyst used for the hydrogenation contains a) iron or a compound based on iron or mixtures thereof, b) 0.001 to 0.3 wt. % in relation to a) of a promoter based on 2, 3, 4 or 5 elements from the following group: aluminium, silicon, zirconium, titanium and vanadium and c) 0 to 0.3 wt. % in relation to a) of a compound based on an alkaline and/or alkaline earth metal.

L'invention concerne un procédé de production de diamines alpha,oméga aliphatiques par hydrogénation de dinitriles alpha,oméga aliphatiques en présence d'un catalyseur. Ce procédé est caractérisé en ce que l'on utilise pour l'hydrogénation un catalyseur contenant (a) du fer, un composé à base de fer ou leur mélange, (b) de 0,001 à 0,3 % en poids par rapport à (a) d'un promoteur à base de 2, 3, 4 ou 5 éléments choisis dans le groupe composé d'aluminium, de silicium, de zirconium, de titane, de vanadium et (c) de 0 à 0,3 % en poids par rapport à (a) d'un composé à base d'un métal alcalin et/ou d'un métal alcalino-terreux.

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