Highly crystalline polypropylene with low amount of xylene solubles.

摘要

A polypropylene resin composition comprising: a polypropylene having a Mw / Mn less than 5.5, a flow rate lower melting than 5 g / 10 min a secant modulus at 1% larger than 2100 MPa (300,000 psi), less than 1% xylene solubles, a lower opacity than 25%, a crystallinity of at least 70% a pentad ratio / isotactic triad greater than 95% and a temperature of greater crystallization 133 ° C, wherein the composition contains polypropylene resin 1500ppm 750ppm to a nucleator / clarifier additive calculated on the total amount of the polypropylene and the nucleator / clarifier additive.