| 摘要 |
<p>Polypropylene composition comprising a propylene homopolymer having a melt flow rate MFR2 (230 °C) in the range of 1.0 to 20.0 g/10min and a propylene copolymer, said copolmyer comprises ° a polypropylene fraction having a comonomer content of not more than 1.0 wt.-%, the comomers are C5 to C12 a-olefins, and ° a propylene copolymer fraction having a comonomer content 4.0 to 20.0 wt.-%, the comomers are C5 to C12 a-olefins, wherein further ° the propylene copolymer has a comonomer content of at least 2.5 wt.-%, the comomers are C5 to C12 a-olefins, ° the melt flow rate MFR2 (230 °C) of the propylene homopolymer is higher than the melt flow rate MFR2 (230 °C) of the polypropylene fraction, ° the weight ratio of the polypropylene fraction to the propylene copolymer fraction is in the range of 30/70 to 70/30, and ° the weight ratio of the propylene copolymer to the propylene homopolymer is in the range of 95/5 to 75/25.</p> |
