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SOLID PRECURSOR OF OLEFIN POLYMERIZATION CATALYST SYSTEM, ITS PRODUCTION, CATALYST SYSTEM CONTAINING SAME, AND METHOD OF OLEFIN POLYMERIZATION IN THE PRESENCE OF THE SYSTEM
SOLID PRECURSOR OF OLEFIN POLYMERIZATION CATALYST SYSTEM, ITS PRODUCTION, CATALYST SYSTEM CONTAINING SAME, AND METHOD OF OLEFIN POLYMERIZATION IN THE PRESENCE OF THE SYSTEM
Solid precursor of a catalyst system for the polymerisation of olefins, containing at least one halogenated neutral metallocene derived from a transition metal, the latter being bonded to at least one halogen atom, and at least one ionising agent. Process for the preparation of this solid precursor, according to which a compound based on the halogenated neutral metallocene and a compound based on the ionising agent are mixed in a heterogeneous medium. Catalyst system including an organometallic compound derived from a metal chosen from groups IA, IIA, IIB, IIIA and IVA of the Periodic Table and a solid precursor described above. Process for the polymerisation of olefins in which this catalyst system is employed.
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