Ecp Enichem Polimeri S.r.l.

Enichem Anic S.p.a.

Agip Petroli S.p.a.

Cesare Ferrero

Francesco Masi

Renzo Invernizzi

Angelo Moalli

Francesco Menconi

Lia Barazzoni

Stefano Malquori

Margherita Corbellini

Antonio Carbonaro

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

A novel process is disclosed for polymerizing and copolymerizing alpha olefins (ethylene included) also in the presence of conjugated diolephins, and more particularly for copolymerizing ethylene with 1,3-butadiene, based on the use of a plural-component catalyst system, one of said components being a novel complex which contains titanium and magnesium. The process gives, in yields higher than 200,000 grams of polymer per g of elemental Ti, ethylene-butadiene copolymers having a distribution of monomeric units characterized by a particular novel .sup.13 C-NMR spectrum, a high apparent specific gravity and such a grit size as to impart flowability to the dry product, and a distribution in the presence of sulphur and accelerators such as to acquire a gel content (fraction insoluble in boiling xylenes) over 50%.

Polymerizing and copolymerizing olefinically unsaturated compounds and

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Monza, Italy

Cesare Ferrero