Catalyst for the polymerization of olefins

Details Catalyst for the polymerization of olefins Catalyst for the polymerization of olefins

C - Chemistry, Metallurgy

08

F

C08F 210/16 (2006.01) C08F 2/34 (2006.01) C08F 4/42 (2006.01) C08F 4/642 (2006.01) C08F 4/649 (2006.01) C08F 4/652 (2006.01) C08F 4/654 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2382009

Catalyst system for the polymerization of olefins CH2=CHR, wherein R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, comprising the product of the reaction between (a) a solid catalyst component comprising Mg, Ti, and halogen, (b) dimethylaluminium chloride (DMAC) and (c) an alkylaluminium compound, in which the molar ratio between (b) and (c) is lower than 10. This kind of catalyst system is particularly suitable for the preparation of copolymers of ethylene with .alpha.-olefins due to its high capacity for incorporating the comonomer while at the same time maintaining high yields.

Système catalytique servant à effectuer la polymérisation d'oléfines CH¿2? = CHR, dans laquelle R représente hydrogène ou un radical hydrocarbure possédant 1-12 atomes de carbone, et constitué par le produit de la réaction entre (a) un constituant catalytique solide contenant Mg, Ti et halogène, (b) chlorure de diméthylaluminium (DMAC) et (c) un composé d'alkylaluminium, le rapport molaire entre (b) et (c) étant inférieur à 10. Ce type de système catalytique est particulièrement approprié à la préparation de copolymères d'éthylène avec des .alpha.-oléfines, étant donné sa capacité élevée d'incorporation du comonomère, tout en maintenant simultanément une productivité élevée.

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