POLYPROPYLENE POLYMERS

摘要

Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminium and chlorine recoverables value of less than 25 ppm and a xylene solubles of less than 1 wt% relative to the total weight of the homopolymer. The resulting homopolymer has other desirable properties such as a heat deflection temperature at 0.45 MPa of from 90 DEG C to 110 DEG C, and a MWD value of from 1.7 to 5.0. These properties make embodiments of the homopolymer desirable for films, and in particular for capacitor films.