| 摘要 |
Provided is an ultrahigh molecular weight ethylene-α-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/cm3 or more, and a flow-down rate of 20 g/10 seconds or more. Also, provided is an ultrahigh molecular weight ethylene-α-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.
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