Two stage activation of oligomerisation catalyst and...

B - Operations – Transporting – 01 – J

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B01J 31/24 (2006.01) B01J 31/18 (2006.01) B01J 37/00 (2006.01) C07C 2/32 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2687259

This invention relates to the oligomerisation of olefinic compounds in the presence of an oligomerisation catalyst activated in two stages by two catalyst activators According to the invention there is provided a process for activating an oligomerisation catalyst by contacting the catalyst with i) a first activator component selected from the group consisting of the aluminoxanes and a mixture of at least one aluminoxane and at least one organylaluminium compound, and ii) a second activator component which is an organylaluminium compound, the process being characterised therein that the oligomerisation catalyst is first contacted with one of the first activator component or second activator component, and the resulting mixture is thereafter contacted with the other of the first activator component or second activator component

Cette invention concerne l'oligomérisation de composés oléfiniques en présence d'un catalyseur d'oligomérisation activé en deux stades par deux activateurs de catalyseur. Selon l'invention, il est proposé un procédé pour activer un catalyseur d'oligomérisation par la mise en contact du catalyseur avec i) un premier composant activateur choisi dans le groupe constitué par les aluminoxanes et un mélange d'au moins un aluminoxane et d'au moins un composé organylaluminium, et ii) un second composant activateur qui est un composé organylaluminium, le procédé étant caractérisé par le fait que le catalyseur d'oligomérisation est tout d'abord mis en contact avec l'un parmi le premier composant activateur et le second composant d'activateur, et le mélange résultant est ensuite mis en contact avec l'autre parmi le premier composant activateur et le second composant activateur.

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