| 摘要 |
Heterophasic polypropylene resin having an MFR (2.16 kg, 230°C) of more than 27 g/10 min, determined according to ISO 1133 comprising a propylene homo- or copolymer matrix (A) and an ethylene-propylene rubber phase (B) dispersed within the matrix, wherein the heterophasic polypropylene resin has a fraction insoluble in p-xylene at 25°C (XCU) in an amount of 75 to 85 wt.-% with a weight average molecular weight of 110 to 190 kg/mol measured by GPC analysis according to ISO 16014-1, and 4, the fraction insoluble in p-xylene at 25°C (XCU) containing monomer units derived from ethylene in an amount of 12.0 to 21.0 wt.-% and a fraction soluble in p-xylene at 25°C (XCS) in an amount of 15 to 25 wt.- % having an intrinsic viscosity of 1.4 to 2.0 dl/g, determined according to DIN EN ISO 1628-1 and -3 and being composed of propylene monomer units in an amount of 40 wt.-% or more, and having a glass transition temperature Tg as measured by DSC according to ISO 6721-7 at a compression moulded sample consisting of the XCS fraction in the range of - 60 to - 50 °C. |
