This invention relates to isotactic propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from about 2.5 to about 20.0. The isotactic propylene homopolymer composition may be prepared in a multiple stage...http://www.google.com.tw/patents/US6207750?utm_source=gb-gplus-share專利 US6207750 - Propylene homopolymers and methods of making the same