| 摘要 |
<p>Disclosed in one aspect is a pipe comprising a composition of one or more propylene-a-olefm copolymers comprising propylene-derived units and from 5 to 35 wt%, by weight of the propylene-a-olefin copolymer, of ethylene-derived units and/or a C4 to C10 a-olefin-derived unit, and having (i) a density from 0.850 to 0.920 g/cm3; (ii) an Hf of less than 75 J/g; and (iii) a Tm of less than 105°C; and at least one additional component selected from the group consisting of propylene random copolymers having a comonomer content of less than 5 wt%, a propylene block copolymer, propylene homopolymer and combinations thereof; wherein the pipe composition possesses a Flexural Modulus (23°C) less than 650 MPa, an Izod Impact (23°C) greater than 30 kJ/m2, and a Vicat Softening Temperature greater than 110°C.°</p> |
