Binary cocatalyst compositions for activating heterogeneous...

Details Binary cocatalyst compositions for activating heterogeneous... Binary cocatalyst compositions for activating heterogeneous...

C - Chemistry, Metallurgy

08

F

C08F 4/642 (2006.01) C08F 10/00 (2006.01) C08F 210/02 (2006.01)

Patent

CA 2174452

A catalyst composition for copolymerizing ethylene with alpha-olefins is prepared by supporting a magnesium compound and a titanium compound on a solid, inert porous carrier, and activating the precursor with a mixture of dimethylaluminum chloride and a trialkylaluminum compound. Products with a bimodal molecular weight distribution are produced which are free of alpha-olefin oligomers.

L'invention concerne une composition catalytique servant à copolymériser de l'éthylène avec des alpha-oléfines par application d'un composé magnésium et d'un composé titane sur un support poreux inerte solide et par activation du précurseur avec un mélange de chlorure d'aluminium diméthylique et d'un composé aluminium-alcoyle. On obtient des produits à distribution bimodale du poids moléculaire, qui sont exempts d'oligomères à alpha-oléfines.

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