| 摘要 |
PURPOSE:To provide the title compsn. having excellent impact resistance and gloss, consisting of a specified propylene/ethylene block copolymer and high- density PE. CONSTITUTION:100pts.wt. propylene/ethylene copolymer (A) having an ethylene content of 3-50mol% and an MFR (230 deg.C, 2.16kg) of 0.3-100g/10min, composed of 97-40wt% propylene polymer component (a) having an isotactic index of not lower than 92, 3-40wt% propylene/ethylene copolymer component (b) having an ethylene contact of 15-40mol% and an intrinsic viscosity (in decalin, 135 deg.C) of 1-10dl/g and 0-20wt% high-density ethylene polymer component (c) having an intrinsic viscosity of 1-10dl/g, a density of not lower than 0.940g/cm<3> and an m.p. of 115-132 deg.C, is blended with 5-40pts.wt. high-density PE (B) having a density of not lower than 0.940g/cm<3>, an MFR of 0.05-50g/10min and an MFR ratio of B to A of 0.125-0.4. The mixture is melt-kneaded to obtain the title compsn. which has an MFR of 0.2-100g/10min and a good quality and in which the components are homogeneously dispersed in each other. |
