A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by a) complexing a magnesium alkyl composition with an ortho disubstituted hindered aromatic acid ester; b) reacting the resulting complex with a compatible precipitation agent to form a solid component; and c) reacting the resulting solid with a titanium (IV) compound and an electron donor compound in a suitable diluent.
一种具有优异活性、立体特异性和形态特征的不溶于
碳氢化合物的固体α-
烯烃聚合
催化剂组分,由以下步骤形成的产物组成:a)
镁烷基组合物与正交二取代受阻
芳香酸酯络合;b) 所得络合物与相容沉淀剂反应形成固体组分;以及 c) 所得固体与
钛(IV)化合物和电子供体化合物在合适的稀释剂中反应。