Propylene-ethylene random copolymer film

摘要

A propylene-ethylene random copolymer prepared by copolymerizing propylene with ethylene in the substantial absence of a liquid medium with a catalyst system comprising: (A) a solid catalyst component containing magnesium, titanium, a halogen and a first electron donor as an essential component, (B) an organoaluminum compound and (C) a second electron donor compound, wherein an ethylene content (E) of the copolymer is from 3.5 to 7.0% by weight, and wherein a content of a xylene-soluble portion at 20 DEG C. (D) of the copolymer satisfies the relationship D