Patent ID: 6562886
Filing Date: 2003-05-13
Classification: C08F,C08J,C08K,C08L

Abstract:
A propylene-based polymer composition, comprising:(1-A) a propylene homopolymer obtained through polymerization in the presence of a metallocene catalyst and having an isotactic pentad fraction (mmmm fraction) of from 80 to 99 mol %, a molecular weight distribution (Mw/Mn) of at most 3.5, and an intrinsic viscosity (&eegr;) of from 0.5 to 5.0 dl/g; and (1-B) at least 10 ppm of at least one nucleating agent selected from the group consisting of a metal salt of an organic phosphoric acid, talc, dibenzylidene-sorbitol or its derivative, an amide compound and a polymer capable of inducing a crystalline nucleus in said propylene homopolymer (1-A) to thereby lower a degree of supercooling.