Components of catalysts for the polymerization of olefins

Details Components of catalysts for the polymerization of olefins Components of catalysts for the polymerization of olefins

C - Chemistry, Metallurgy

08

F

252/111

C08F 4/16 (2006.01) C08F 4/02 (2006.01) C08F 10/00 (2006.01) C08F 110/00 (2006.01)

Patent

CA 1141744

ABSTRACT OF DISCLOSURE Components of catalysts for polymerizing olefins are obtained by grinding together an anhydrous magnesium halide, an ester of an aromatic carboxylic acid and a silicon compound having alkenyl groups and alkoxy groups bound to the silicon atom, of the type of vinyl-triethoxy-silane, and by successively reacting the ground product with a halogenated titanium com- pound, liquid under the reaction conditions, such as TiC14. The present invention provides not only the aforesaid catalyst components for the polymerization of olefins, but also catalysts obtained therefrom and the use of the same, partic- ularly in the polymerization of the alpha-olefins CH2 = CHR wherein R is an alkyl or aryl radical with from 1 to 8 carbon atoms. In the case of the polymerization of alpha-olefins, the catalytic components, when mixed with organometallic aluminum compounds, yield final catalysts which result in an increase in the polymer yield without lowering the isotacticity index of the polymer.

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