Neste Oy

Barbro U Lofgren

Luciano Luciani

Eero I Iiskola

Hanneli Seppanen

Maria H Stjernberg

Thomas Garoff

A catalyst component for alpha olefine-polymerizing catalysts which comprise an organo-aluminum compound, an external electron donor, and a solid catalyst component 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

Catalyst component for alpha olefine-polymerizing catalysts and

Catalysts for polymerization and copolymerization of olefins to form polymers having a high degree of isotacticity and fast rate of crystal transformation. The catalysts embody a component made by chlorinating a magnesium alkyl with chlorine or a mixture of chlorine and alkyl chloride to form a carrier, contacting the carrier first with liquid TiCl.sub.4, then with a Lewis base, and after that at least once with TiCl.sub.4 in the absence of Lewis base.

Catalyst components, a catalyst and a process for the polymerization

Catalyst components, a catalyst and a process for the polymerization of

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Barbro U Lofgren