Patent ID: 6143844
Filing Date: 2000-11-07
Classification: B01J,C08F,Y10S

Abstract:
A process for polymerizing 1-olefin monomers, comprising contacting, in one or more polymerization reactors in the slurry or gas phase, olefin monomers or mixtures thereof at an increased pressure of at least 500 kPa with a heterogeneous catalyst prepared by a process comprising:chemisorbing, in a reaction chamber, a vapourized metallocene compound or a precursor thereof onto an inorganic support at a temperature which is sufficiently high to keep said metallocene compound in the vapour state during said chemisorbing; and removing any unreacted metallocene compound in the vapour state so as to form a heterogenous metallocene catalyst in said reaction chamber; andwherein the metallocene compound has a metal selected from the group consisting of Zr, Ti and Hf.