Catalyst components for .alpha. olephine-polymerizing...

Details Catalyst components for .alpha. olephine-polymerizing... Catalyst components for .alpha. olephine-polymerizing...

C - Chemistry, Metallurgy

08

F

252/107

C08F 4/614 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1285262

ABSTRACT OF THE DISCLOSURE A catalyst component for alpha olefine-polymerizing catalysts which comprise an organoaluminum compound, an external electron donor, and a solid catalyst compound obtained when a solid carrier component containing magnesium has reacted with a titanium halide compound, in addition to a procedure for manufacturing the same. The catalyst component is produced by reacting a solid carrier component with a titanium halide compound with or without the presence of an internal electron donor. The solid carrier component is prepared by (a) dissolving, in hydrochloric acid, a magnesium compound selected from the group consisting of magnesium hydroxide, magnesium carbonate, magnesium oxide, and natural and/or synthetic minerals containing the same, (b) evaporating the solution until dry, (c) heating the obtained salt mixture at 130 to 150°C, (d) dissolving the magnesium component in ethanol, (e) drying the ethanol solution of the magnesium component with the aid of periodic azeotropic distillation, and (f) precipitating the solid carrier component from the ethanol solution.

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