A HIGH ACTIVITY OLEFIN POLYMERIZATION PROCATALYST, ITS PREPARATION, CATALYST SYSTEM AND USE

摘要

The invention relates to a high activity procatalyst for the polymerization of C2-C10 olefins, as well as a process for the preparation of this catalyst. The procatalyst has low hydrogen sensitivity and high polymerization activity and give homogenous C2-C10 olefin polymers. The procatalyst is prepared by contacting (a) an inorganic support, (b) an aluminium compound containing both an organic group and chlorine, (c) a compound or mixture containing hydrocarbyl and hydrocarbyl oxide linked to magnesium, (d) a titanium compound, typically a titanium chloride, and (e) a chlorine compound, which is either the same or different from the organic aluminum chloride compound.