Method for preparing tris(ether-amine)

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 213/02 (2006.01) C07C 217/28 (2006.01)

Patent

CA 2350652

The invention concerns a method for preparing tris(ether-amines) of formula (I): N[A-O-(B-O)n-R]3 wherein R, A, B and n are as defined in Claim 1, comprising the reaction, in liquid phase, of an alkylene-glycol monoether of formula (II): HO-A-O-(B-O)nR wherein R, A, B and n are as defined in Claim 1, with an ammonolysis agent selected among ammonia and an etheramine of formula (I'): H3-pN[A-O-(B-O)nR]p wherein: A, B, n and R are as defined in Claim 1 and p represents 1 or 2, at a temperature ranging between 100 and 250 DEG C, by contacting reagents with a hydrogenation-dehydrogenation catalyst.

La présente invention concerne un procédé de préparation de tris(éther-amines) de formule (I) N[A-O-(B-O)n-R]3 dans laquelle R, A, B et n sont tels que définis à la revendication (1), comprenant la réaction, en phase liquide, d'un monoéther d'alkylène-glycol de formule (II): HO-A-O-(B-0)n R où R, A, b et n sont tels que définis à la revendication (1), avec un agent d'ammonolyse choisi parmi l'ammoniac et une étheramine de formule (I'): H3-p N[A-O-(B-O)n-R]p où A, B, n et R sont tels que définis à la revendication (1) et p représente 1 ou 2, à une température comprise entre 100 et 250° C, par mise en contact des réactifs avec un catalyseur d'hydrogénation-déshydrogénation.

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