| 摘要 |
PURPOSE:To obtain a highly crystalline polypropylene with outstanding physical properties, by polymerization of propylene using a catalytic system consisting of an organoaluminum compound and a transition metal catalyst prepared by carrying a titanium halide on a specific carrier. CONSTITUTION:The objective polypropylene can be obtained by polymerization of propylene using a catalytic system consisting of (A) an organoaluminum compound (e.g., trialkylaluminum, dialkylaluminum halide) and (B) a transition metal catalyst, a solid catalyst prepared by carrying a titanium halide on a carrier formed by reaction, in the presence of talc, between (i) a halogenated hydrocarbon compound (pref. 1-20C-hydrocarbon chloride) and (ii) a Grignard reagent (pref., a product formed by reaction between 1-20C hydrocarbon bromide or iodide and metallic magnesium in an ether-contg. solvent).
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