Patent ID: 6399533
Filing Date: 2002-06-04
Classification: B01J,C08F

Abstract:
A component of catalysts for the polymerization of olefins comprising a compound of a transition metal M selected from the group consisting of Ti, V, Zr, and Hf containing at least one &pgr; bond between said transition metal and a cyclopentadienyl-group containing moiety, and a Mg halide wherein the component is characterized by a surface area (BET) greater than 50 m2/g, porosity (BET) greater than 0.15 cm3/g and porosity (Hg) greater than 0.3 cm3/g, with the proviso that when the surface area is less than about 150 m2/g, the porosity (Hg) is less than about 1.5 cm3/g; and wherein the Mg halide is complexed with the transition metal M-containing compound, and one or more electron donor compounds not containing active hydrogen in an amount up to about 30 mol % based on the Mg halide and the electron donor compounds are selected from the group consisting of ethers, esters and ketones.