COMPONENTI DI CATALIZZATORI PER LA POLIMERIZZAZIONE DI OLEFINE

Components of catalysts for the polymerization of olefins CH2=CHR wherein R is hydrogen or an alkyl radical with 1-12 carbon atoms or an aryl radical, comprising the product obtained by contacting a Ti V, Zr or Hf compound containing at least a metal halogen bond and optionally a metal- pi bond, wit...

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1. Verfasser:	ZAMBON LICIO
Format:	Patent
Sprache:	ita
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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Zusammenfassung:	Components of catalysts for the polymerization of olefins CH2=CHR wherein R is hydrogen or an alkyl radical with 1-12 carbon atoms or an aryl radical, comprising the product obtained by contacting a Ti V, Zr or Hf compound containing at least a metal halogen bond and optionally a metal- pi bond, with a prepolymer having porosity (mercury porosimetry) higher than 0.3 cm /g obtained with a catalyst comprising a Ti, V Zr or Hf compound of the type above indicated, supported on a porous support containing a Mg dihalide formed in situ by conversion of a Mg compound different from the Mg dihalides or on TiC13 and/or VC13, having surface area higher than 100 m /g and porosity greater than 0.5 cm /g (by nitrogen).