Process for polymerization of alpha-olefin.

摘要

A process for producing poly- alpha -olefin having stereospecific property which comprises polymerizing alpha -olefin by the use of a catalyst comprising (A) a reaction product of a magnesium compound and a titanium compound, (B) an organometallic compound, and (C) an electron donor compound, wherein the reaction product used as Component (A) is a solid product which is prepared by reacting a magnesium dialkoxide represented by the general formula: Mg(OR<1>)2 with an electron donor compound, and then reacting the product obtained two or three more times with a halogen-containing tetravalent titanium compound represented by the general formula: Ti(OR<2>)nX<1>4-n. In accordance with the process of the present invention, polymers produced have high stereospecific property and high apparent density, and catalysts used have very high activity for the polymerization of alpha -olefin.