CATALYST COMPONENTS FOR POLYMERIZING ETHYLENE

Components of catalysts for polymerizing ethylene and the mixture of ethylene with alpha-olefins comprising the reaction product of (A) a magnesium compound, as Mg-chloride, Mg-alcoholate or a Grignard compound, with (B) a titanium, vanadium or zirconium compound having at least 2 metal-oxygen bonds...

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Bibliographische Detailangaben
Hauptverfasser:	CUFFIANI I, ZUCCHINI U, GALLI P
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Components of catalysts for polymerizing ethylene and the mixture of ethylene with alpha-olefins comprising the reaction product of (A) a magnesium compound, as Mg-chloride, Mg-alcoholate or a Grignard compound, with (B) a titanium, vanadium or zirconium compound having at least 2 metal-oxygen bonds, as a tetra-alcoholate, and with (C) a halogenated compound of metals of B, as Ti-tetrachloride. According to an aspect of the invention, the reaction product (A) + (B), before being reacted with (C), is treated with a silicium compound having a halogenating and/or reducing action. The catalysts according to the invention are suitable for obtaining ethylene polymers having a broad distribution of molecular weights.