| abstract |
(57) [Summary] [Object] To provide a catalyst having a reduced amount of organoaluminum oxy compound used and excellent polymerization activity in gas phase polymerization or suspension polymerization. [Structure] An olefin prepolymerization catalyst formed by prepolymerizing an olefin into a catalyst component comprising (a) a carrier, (c) an organoaluminum oxy compound, and (d) a metallocene compound, and (e) an organoaluminum compound, (F) An olefin polymerization catalyst comprising an ionized ionic compound. |