Solid catalyst components for use in olefin polymerization, olefin polymerization catalyst systems containing the solid catalyst components, methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing and copolymerizing olefins involving the use of the catalyst systems. The solid catalyst components are formed by (a) dissolving a magnesium compound and an auxiliary intermediate electron donor in at least one first solvent to form a solution; (b) contacting a first titanium compound with said solution to form a precipitate of the magnesium compound and the first titanium compound; (c) washing the precipitate with a mixture of a second titanium compound and at least one second solvent and optionally an electron donor at a temperature of up to 90° C.; and (d) treating the precipitate with a mixture of a third titanium compound and at least one third solvent at 90-150° C. to form a solid catalyst component.
用于
烯烃聚合的固体
催化剂组分,含有固体
催化剂组分的
烯烃聚合
催化剂体系,制造固体
催化剂组分和
催化剂体系的方法,以及使用
催化剂体系聚合和共聚
烯烃的方法。固体
催化剂组分是通过以下方法形成的:(a) 将
镁化合物和辅助中间电子供体溶解在至少一种第一溶剂中,形成溶液;(b) 将第一
钛化合物与所述溶液接触,形成
镁化合物和第一
钛化合物的沉淀;(c) 用第二
钛化合物和至少一种第二溶剂以及电子供体的混合物在最高 90°C 的温度下洗涤该沉淀;以及(d) 处理该沉淀。(d) 用第三种
钛化合物和至少一种第三种溶剂的混合物在 90-150 摄氏度下处理沉淀物,以形成固体
催化剂组分。