| 摘要 |
A polyethylene resin suitable for formation into pipes or pipe fittings is disclosed, having an MI5 of from 0.40 to 0.70 g/10 min, and comprising from 47 to 52 wt % of a low molecular weight polyethylene fraction, and from 48 to 53 wt % of a high molecular weight polyethylene fraction, wherein the high molecular weight polyethylene fraction comprises a copolymer of ethylene and 1-hexen or 1-octene.
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