PROPYLENE POLYMER COMPOSITION, MOLDED OBJECT, AND POLYOLEFIN COPOLYMER

摘要

A propylene polymer composition comprising (A) a propylene block copolymer or a composition consisting of a propylene polymer and a rubber ingredient and (B) a polyolefin copolymer which contains a component eluted at 101°C and higher in temperature-rising fractional chromatography and giving, in <13>C-NMR spectrometry, a peak attributable to an ethylene chain and which has an intrinsic viscosity as measured in decalin at 135°C of 0.5 to 10.0 dl/g; a molded object obtained from the composition; and a polyolefin copolymer which comprises a propylene polymer segment and an ethylene copolymer segment chemically bonded to each other and is the ingredient (B). The propylene block copolymer or the composition comprising a propylene polymer and a rubber ingredient can have excellent impact resistance and excellent tensile strength at break while retaining high rigidity.