| 摘要 |
A method for preparing an alpha -olefin polymer comprising the step of polymerizing or copolymerizing an alpha -olefin in the presence of a catalyst containing a solid catalyst constituent (A) which contains magnesium, titanium, a halogen element and an electron donor, an organoaluminum compound constituent (B), an organosilicon compound constituent (C) represented by the following general formula (1); and an organosilicon compound constituent (D) represented by the following general formulas (2) or (3) to prepare an alpha -olefin polymer RnSi(OR)4-n (wherein R is a hydrocarbon group having 1 to 8 carbon atoms, n is integer of 1 or 2) <CHEM> (wherein R<1> is a hydrocarbon group having 1 to 8 carbon atoms, R<2> is a hydrocarbon group having 1 to 8 carbon atoms, a hydrocarbylamino group having 2 to 24 carbon atoms, or a hydrocarbylalkoxy group having 1 to 24 carbon atoms, R<3>N is a polycyclic amino group having 7 to 40 carbon atoms, wherein the carbon atoms and the nitrogen atom form a cyclic skeleton). |
