abstract |
In the liquid phase polymerization process of butene-1, (a) a solid catalyst component consisting of magnesium, titanium and an external donor compound represented by the formula (I) (I) (Wherein the R groups are the same or different and are a C 1 -C 10 hydrocarbon group), (b) an aluminum alkyl cocatalyst, and (c) a catalyst comprising an external electron donor. |