Exxonmobil Chemical Patents Inc.

Susan Chia-Yu Yeh

Chon-Yie Lin

Michael Chia-Chao Chen

Bernard Louis Bossaert

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 aluminum 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&#xb0; C. to 110&#xb0; 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.

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Houston, TX, United States of America

Susan Chia-Yu Yeh