| 摘要 |
PURPOSE:A specific solid component is treated with an electron donor and an electron acceptor such as titanium tetrachloride, combined with an organoaluminum compound, preliminarily activated with the monomer and then used as a polymerization catalyst, thus producing the titled high-crystallinity polymer without deashing process in high yield. CONSTITUTION:A trivalent metal halide is made to react with a divalent metal hydroxide, oxide, carbonate, double salt containing them, or a hydrate containing a divalent metal compound to give the solid component (A). Then, electron donors and electron acceptors are made to act on the solid component once to ten times respectively, in which titanium tetrachloride is used at least once as the electron acceptor, thus forming the solid component (B). Further, the solid component (B) is combined with a trialkylaluminum and a reaction product from the electron donor and the electron acceptor. At this time, an alpha-olefin is used to effect the polymerization treatment of the catalyst in the presence of the solid component (B) and the trialkylaluminum to activate the catalyst. Then, polymerization of an olefin is effected with the resultant catalyst.
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