| 摘要 |
PURPOSE:To obtain a polymer composition, consisting of propylene homopolymer having specific physical properties and propylene-ethylene random copolymer having specified physical properties and suitable for molding molded products having high impact resistance and rigidity. CONSTITUTION:A polymer composition consisting of (A) 60-94wt.% propylene homopolymer, produced by using a stereoregular polymerization catalyst and having 0.5-5dl/g intrinsic viscosity [eta1] and <=3wt.% content (Xs) of matter soluble in xylene at ordinary temperature, <=0.5, preferably <=0.4 difference between the intrinsic viscosity of matter insoluble in xylene at ordinary temperature and that of the matter soluble in xylene at ordinary temperature and an isotactic pentad fraction (IP) satisfying formula I and crystallization temperature (Tc) satisfying formula II and (B) 6-40wt.% propylene-ethylene random copolymer having >=2.8dl/g, preferably 3-10dl/g intrinsic viscosity [eta2] and 30-80wt.% ethylene content. |
