PROCESS OF PREPARING A POLYMERIZATION CATALYST AND PREPARATION OF ETHYLENE POLYMERS WITH THIS CATALYST

摘要

Disclosed is a catalyst comprising an inert, particulate, inorganic support onto which has been deposited a group II or III metal hydrocarbyl complex of throsium and at least one additional complex or compound of a transition metal selected from the group consisting of nickel, molybdenum, and titanium. The catalyst is activated by nesting in the range 200.degree.C1200.degree.C. Also disclosed is the process for the polymerization of .alpha. -olefins in the presence of said catalyst.