| 摘要 |
PROBLEM TO BE SOLVED: To provide anα-olefin polymerization solid catalyst component and anα-olefin polymerization catalyst which have highly active polymerizability, and a process for efficiently producing anα-olefin polymer. SOLUTION: Theα-olefin polymerization solid catalyst component can be obtained by subjecting (a) a solid product to be obtained by reducing (2) a titanium compound to be represented by formula [I] (wherein a is a number of 2-20; R<2> is a 1-20C hydrocarbon group; and X<2> is a halogen atom or a 1-20C hydrocarbon oxy group, and all X may be the same or different) with (3) an organomagnesium compound in the presence of (1) an organosilicon compound having an Si-O bond, (b) an organic acid halide, (c) a halogenated compound, and (d) a phthalic acid ester compound having a 7C hydrocarbon oxy group to contact treatment. Other aspects are also disclosed.
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