Syndiotactic polypropylene mold and process for preparing the same.

A MOLD RIGID HIGH STRENGTH AND IMPACT for which the melting point ALLOCABLE is formed syndiotactic polypropylene as measured by ANALYSIS THERMAL DIFFERENTIAL TRACKING at a rate of temperature rise DE 10 (degree) C / MIN PROVIDES ONE LIFTING THE MOLD MOLTEN homopolymer or propylene SUBSTANTIALLY syndiotactic, syndiotactic copolymer with a minor amount of another olefin, or a mixture thereof with a small amount of substantially isotactic polypropylene FOLLOWED BY HEAT TREATMENT.