Ethylene oligomerization process and catalyst

Details Ethylene oligomerization process and catalyst Ethylene oligomerization process and catalyst

C - Chemistry, Metallurgy

07

C

260/706.2, 260/4

C07C 2/30 (2006.01) B01J 31/22 (2006.01) C07C 2/34 (2006.01) C07C 11/02 (2006.01) C07F 7/00 (2006.01)

Patent

CA 2000182

A process for preparing oligomers of ethylene, which comprises contacting ethylene, alone or in combination with one or more C3-C10 alpha olefins, at a temperature in the range of from 100 to 130 °C with a catalyst comprising the reaction product of a zirconocene and one or more alkyl aluminoxanes wherein the alkyl is selected from methyl, ethyl and mixtures thereof and the ratio of equivalents of methyl to ethyl in the product is in the range of from 4 to 0.25 and wherein the atomic ratio of aluminium to zirconium is in the range of from 0.1 to 100, and a catalyst suitable for use in the process.

Méthode pour préparer des oligomères d'éthylène, consistant à mettre en contact de l'éthylène, seul ou en combinaison avec une ou plusieurs alpha-oléfines C3-C10, à une température de 100 à 130 degrés C, avec un catalyseur renfermant le produit de réaction d'un zirconocène et d'un ou de plusieurs alkylaluminoxanes, où l'alkyle est choisi parmi un méthyle, un éthyle ou un mélange de ces deux radicaux, avec un rapport équivalents de méthyle/équivalents d'éthyle de 4 à 0,25 et un rapport atomique aluminium/zirconium de 0,1 à 100; catalyseur approprié pour cette méthode.

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