| 摘要 |
An olefin polymerization catalyst comprising: (A) a solid catalyst component prepared by contacting (a) a dialkoxyl magnesium, (b) a tetra-valent titanium halide, and (c) a phthalic acid diester in (d) an aromatic hydrocarbon having a boiling point in the range of 50 to 150 DEG C, (B) an organoaluminum compound of the formula R<1>pAlQ3-p, one or more compounds selected from the group consisting of (C) one or more halogen-containing organosilicon compounds selected from (C<1>) a halogen-containing organosilicon compound of the formula R<2>lSi(OR<3>)4-l-mXm and(C<2>) a halogen-containing organosilicon compound of the formula R<4>qSi(OR<5>)4-q, and (D) an organosilicon compound of the formula R<6>sSi(OR<7>)4-s. The catalyst exhibits excellent activity to hydrogen and the same catalytic activity and yield performance as conventional catalysts, and possesses the capability of producing polymers with stereoregularity equivalent to conventional catalysts. <IMAGE> |
