Catalyst components for the stereoregular polymerization of alpha-olefins, comprising a Ti halide and an electron-donor compound supported on an anhydrous magnesium dihalide and obtained by means of non-extractive treatments, with liquids having a dielectric constant at 20 °C equal to or higher than 2, of compositions comprising an anhydrous Mg dihalide, the crystallites of which have an average size lower than 300 A.
用于α-烯烃立体聚合的催化剂组分,包括支撑在无
水二卤化
镁上的卤化
钛和电子供体化合物,并通过非萃取处理获得,其液体在 20 °C 时的介电常数等于或大于 2,其成分包括无
水二卤化
镁,其晶体的平均尺寸小于 300 A。