Montell Technology Company Bv

Montell North America Inc.

Umberto Zucchini, Deceased

Tiziano Dall'Occo

Illaro Cuffiani

Antonella Angelini

Floriano Guglielmi

Catalysts component of the (co)polymerization of alpha-olefins CH.sub.2 .dbd.CHR, wherein R is hydrogen or an alkyl radical having from 1 to 8 carbon atoms, comprising a product of the composition:

Vanadium based components and catalysts for the polymerization of

Process for preparing elastomeric copolymers of ethylene with .alpha.-olefins CH.sub.2 .dbd.CHR, optionally containing minor proportions of a diene, characterized by the use during the polymerization of a catalyst comprising the reaction product of:

Process for preparing elastomeric ethylene copolymers

Solid catalyst component for the polymerization of ethylene including the product of the reaction between: 1) the product obtained by reacting:

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Ferrara, Italy

Umberto Zucchini, Deceased