| 摘要 |
PURPOSE:To provide the titled additive capable of improving the low frictional properties of molded articles when incorporated in synthetic resins such as polyamide, also of giving molded articles of good appearance, consisting of ultra-high molecular weight polyethylene and a polyethylene with a specified range of intrinsic viscosity. CONSTITUTION:The objective additive consisting of (A) an ultra-high molecular weight polyethylene component with an intrinsic viscosity determined at 135 deg.C in the form of decalin solution (hereafter referring to 'intrinsic viscosity') >=6(pref. 6-40)dl/g, MFR pref. <=0.01g/10min, density >=0.92g/cm<3> and melting point >=115 deg.C and (B) a polyethylene component with an intrinsic viscosity 0.1-5(pref. 0.3-4)dl/g, density pref. 0.92-0.97g/cm<3> and melting point 115-145 deg.C with the weight ratio A/B=90-10/10-90 (pref. 85-15/15-85) and at least part of the component A and/or B modified with polar group.
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