Method for purifying aliphatic aminonitriles

Details Method for purifying aliphatic aminonitriles Method for purifying aliphatic aminonitriles

C - Chemistry, Metallurgy

07

C

C07C 253/34 (2006.01) C07C 255/58 (2006.01)

Patent

CA 2328767

The invention concerns a method for purifying aliphatic aminonitriles and more particularly amino-6 capronitrile, which consists more precisely in subjecting amino-6 capronitrile to hydrogenation by molecular hydrogen, in the presence of a catalyst containing at least a metal selected among palladium, platinum, ruthenium, osmium, iridium, rhodium and a promoting or preconditioning agent to improve the selectivity of hydrogenation.

La présente invention concerne un procédé de purification d'aminonitriles aliphatiques et plus particulièrement de l'amino-6 capronitrile. Elle consiste plus précisément à soumettre l'amino-6 capronitrile à une hydrogénation par l'hydrogène moléculaire, en présence d'un catalyseur contenant au moins un métal choisi parmi le palladium, le platine, le ruthénium, l'osmium, l'iridium, le rhodium et un agent promoteur ou un préconditionnement pour améliorer la sélectivité de l'hydrogénation.

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