Method of improving the crystallization rate and temperature of syndiotactic polypropylene by addition of at least one of polytetrafluoroethylene, sodium 2,2-methylene-bis-(4,6,di-tert-butylphenyl)phosphate)), pimellic acid, and calcium pimallate, and compositions and products made thereby....http://www.google.com/patents/US5969021?utm_source=gb-gplus-sharePatent US5969021 - Method of improving crystallization rate and temperature of syndiotactic polypropylene and compositions and products made therefrom
