| 摘要 |
<p>A polyolefin composition comprising: a) from 40.0 wt% to 58.5 wt%, of a propylene homopolymer having the fraction insoluble in xylene at 25°C higher than 96 wt% and an melt flow rate ranging from 95.0 to 200.0 g/10 min; b) from 21.0 wt% to 30.0 wt%, of a copolymer of ethylene and propylene, the copolymer having an amount of recurring units deriving from ethylene ranging from 35.0 wt% to 60.0 wt%, and the polymer fraction soluble in xylene at 25°C of component a) + component b) having an intrinsic viscosity value ranging from 3.1 to 4.2 dl/g; and, c) from 20.5 wt% to 30.0 wt%, of ethylene homopolymer; said composition having a value of melt flow rate ranging from 9.0 to 30.0 g/10 min, and the ratio between the MFR of component a) MFRa and the MFR of the total composition MFRT MFRa/MFRT is comprised between 5.0 and 15.0.</p> |
