abstract |
(57) [Summary] (Modified) [Objective] To provide an α-olefin polymerization catalyst capable of producing a highly stereoregular poly α-olefin in a high yield. [Constitution] An α-olefin polymerization catalyst comprising the following 1) to 3). 1) a solid catalyst component containing magnesium, titanium, a halogen and an electron donating compound as an essential component, 2) an organoaluminum compound and 3) a compound represented by the formula: [R 1 is a hydrocarbon group, R 2 is R 1 , R 4 O, etc., R 3 is methyl or ethyl, x is 1 or 2, y is 0 or 1, and z is 2 Or an organic silicon compound represented by 3]. Examples of the organic silicon compound include C 5 H 11 COOSi (OMe) 3 , C 3 H 5 COOSi (OMe) 2 Ph, PhCOOSi (OEt) 3 or the like is used. |