| 摘要 |
<p>Provided is an ultrahigh molecular weight ethylene-±-olefin copolymer powder having an intrinsic viscosity of 5 dl/g or more, a DSC melting point of 122°C or less, an apparent bulk density of 0.30 g/cm 3 or more, and a flow-down rate of 20 g/10 seconds or more. Also, provided is an ultrahigh molecular weight ethylene-±-olefin copolymer powder having an intrinsic viscosity of 5 dl/g or more, a DSC melting point of 122°C or less, a median diameter of 1 to 3000 µm, and a particle size distribution parameter (SPAN) of 3 or less.</p> |
