| 摘要 |
PURPOSE:To obtain the titled composition having improved fluidity and moldability without lowering the abrasion resistance and chemical resistance, by adding specific amounts of styrene oligomer and a hydrocarbon wax or an aliphatic metal soap to polyethylene. CONSTITUTION:100pts.wt. of an ultra-high-molecular-weight polyethylene having an average molecular weight of >=1,000,000 is compounded with (A) 3-10pts. of a styrene oligomer having an average molecular weight of 300-5,000 and (B) 0.5-5pts., preferably 1-3pts. of (B1) a hydrocarbon wax having a melting point of 100-120 deg.C (e.g. paraffin wax) or (B2) a fatty acid metal soap (e.g. organic carboxylic acid metal salt, e.g. magnesium salt, calcium salt, etc.).
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