| 摘要 |
<p>Polypropylene sheet for thermoforming wherein at least one layer comprises a propylene polymer containing at least 0.8 % by weight of ethylene and optionally one or more C4-C10 α-olefins, or a propylene polymer composition containing at least 0.8 % by weight of one or more comonomers selected from ethylene and C4-C10 α-olefins, and having the following features: 1) a melting temperature of 155 °C or higher; 2) a content of fraction soluble in xylene at room temperature lower than 4 % by weight, and a value of the ratio of the polymer fraction collected at the temperature range from 25 °C to 95 °C to the said xylene soluble fraction higher than 8.</p> |
