Ecp Enichem Polimeri S.r.l.

Enichem Anic S.p.a.

Lia Barazzoni

Francesco Masi

Renzo Invernizzi

Angelo Moalli

Francesco Menconi

Cesare Ferrero

Stefano Malquori

Mario Polesello

Francesco Ciardelli

Sergio Masini

Solid component of catalyst for the (co) polymerization of ethylene and &agr;-olefins

A solid component of catalyst highly active in the (co)polymerization of ethylene containing titanium, magnesium, aluminum, chlorine and alkoxy groups, and obtained by means of a procedure wherein:

Procedure for the preparation of a solid component of catalyst for the

Ethylene homopolymers and ethylene copolymers with alpha-(C.sub.3 -C.sub.10)-olefins are obtained by polymerizing the monomers with a polymerization catalyst formed by:

Process for polymerizing ethylene and copolymerizing ethylene with

A solid catalyst component for the low-pressure polymerization of ethylene and C.sub.3 -C.sub.10 alpha-olefins into very high molecular weight polyolefins is in the form of a spherical granular solid having a surface area of between 20 and 40 m.sup.2 /g, a mean pore radius of between 5,000 and 40,000 .ANG. and a porosity of between 40 and 90 vol %, and is definable by the following formula (in atomic proportions:

Catalyst component and catalyst for the production of very high

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Piacenza, Italy

Lia Barazzoni