TITANIUM TRICHLORIDE CATALYST COMPONENT

摘要

A catalyst component for polymerization of alpha-olefins which is prepared by treating titanium tetrachloride with a mixture of a dialkyl aluminum monohalide and a monoalkyl aluminum dihalide wherein the dialkyl aluminum monohalide is present in a proportion at least equimolar with the titanium tetrachloride. If desired, the product of the first reaction is subjected to a beat treatment or alternatively it is treated successively with a Lewis base and then a hydrocarbon solution of titanium tetrachloride.