In accordance with the present invention, there are provided olefin polymerization catalyst components comprising an organoaluminum oxy-compound having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C., and olefin polymerization catalyst containing said olefin...http://www.google.ca/patents/US5171799?utm_source=gb-gplus-sharePatent US5171799 - Olefin polymerization catalyst component, olefin polymerization catalyst and process for the polymerization of olefins
