Catalyst system for the polymerization of ethylene

Details Catalyst system for the polymerization of ethylene Catalyst system for the polymerization of ethylene

C - Chemistry, Metallurgy

08

F

C08F 4/609 (2006.01) C08F 4/44 (2006.01) C08F 4/643 (2006.01) C08F 10/02 (2006.01) C08F 36/20 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2194178

The invention relates to a catalyst system comprising a catalyst A and a cocatalyst B for the homopolymerization of ethylene or copolymerization of ethylene with one or more .alpha.-olefins having 3-12 carbon atoms and optionally one or more non-conjugated dienes, catalyst A comprising one or more organomagnesium compounds, one or more transition metal compounds, one or more halides that do not react spontaneously with the organomagnesium compound(s) and also at least one transfer agent The invention also relates to the preparation of the catalyst system and to the homo- or copolymerization of ethylene with the aid of this catalyst system.

L'invention concerne un système catalytique composé d'un catalyseur A et d'un cocatalyseur B servant à effectuer l'homopolymérisation de l'éthylène ou la copolymérisation de l'éthylène avec une ou plusieurs alpha -oléfines possédant 3-12 atomes de carbone et, éventuellement, un ou plusieurs diènes non conjugués, le catalyseur A comprenant un ou plusieurs composés d'organomagnésium, un ou plusieurs composés de métaux de transition, un ou plusieurs halogénures qui ne réagissent pas spontanément avec le(s) composé(s) d'organomagnésium et, également, au moins un agent de transfert. L'invention concerne également la préparation du système catalytique, ainsi que l'homo- ou la copolymérisation de l'éthylène à l'aide dudit système.

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