| 摘要 |
PURPOSE:To obtain the title catalyst which is inexpensive and highly active and can give a highly stereoregular polymer, by combining a specified solid catalyst component with a silicon compound and an organoaluminum compound. CONSTITUTION:A dialkoxymagnesium is suspended in a liquid aromatic hydrocarbon, and titanium tetrachloride and an aromatic dicarboxylic diester are added to the solution and reacted at 80-135 deg.C. The obtained solid substance is separated and further reacted with titanium tetrachloride, and the formed solid product is contacted with a silicon compound of the formula (wherein R is alkyl, vinyl or the like, R' is alkyl and 0<=m<4) and further contacted with an organoaluminum compound to produce a solid catalyst component. This solid catalyst component is combined with a silicon compound (e.g., tetramethoxysilane) and an organoaluminum compound (e.g., triethylaluminum) to form the title polymerization catalyst.
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