| 摘要 |
PURPOSE:To obtain highly crystalline PP having excellent physical properties, by pretreating a catalyst consisting of a transition metal catalyst and organoaluminum compound with vinylsilacyclohexane and polymerizing propylene using the pretreated catalyst. CONSTITUTION:A catalyst consisting of a transition metal catalyst (preferably titanium halide) and an organoaluminum compound (e.g. trimethylaluminum) is previously subjected to contact treatment with vinylsilacyclohexane. The resultant catalyst is used to polymerize propylene to afford the aimed PP. Furthermore, the polymerization temperature is preferably ordinary temperature-100 deg.C and polymerization pressure is preferably ordinary pressure-50kg/cm<2> gauge.
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