| 摘要 |
PURPOSE:To obtain a highly stereoregular olefin polymer in high yields, by contacting an olefin with a catalyst comprising a specified solid catalyst, an organoaluminum compound and an electron-donating compound. CONSTITUTION:An olefin is polymerized by contact with a catalyst comprising a solid catalyst component (A) containing a magnesium halide, a titanium halide and a nitro compound as components, an organoaluminum compound (B) and an electron-donating compound (C). As the magnesium halide, magnesium chloride, especially anhydrous magnesium chloride is preferable. As the titanium halide, titanium trichloride is particularly desirable. As the nitro compound, an aromatic one is desirable and further a dinitro compound or a compound having both of a nitro group and another functional group is preferred to a mononitro compound.
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