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发明公开
CN101790547A 超高分子量聚烯烃微粒、其制造方法以及其成型体 无效 - 撤回

超高分子量聚烯烃微粒、其制造方法以及其成型体
摘要：
本发明提供一种粒径小，粒度分布狭窄的超高分子量聚烯烃微粒，由该微粒形成的成型体，以及将该超高分子量聚烯烃微粒烧结成型的烧结过滤器。该超高分子量聚烯烃微粒含有1～50ppm钛原子，1～1000ppm铝原子，并且[A]在135℃的萘烷中测定的特性粘度[η]为5dl/g以上，[B]平均粒径为20μm以下，[C]粒径在0～40μm范围内的粒子为90质量％以上。
摘要（英）：

Disclosed are super high molecular weight polyolefin fine particles having small particle diameters and a narrow particle size distribution. Also disclosed are a molded body made of such super high molecular weight polyolefin fine particles, and a sintered filter obtained by sintering molding the super high molecular weight polyolefin fine particles. Specifically disclosed are super high molecular weight polyolefin fine particles containing 1-50 ppm of titanium atoms and 1-1000 ppm of aluminum atoms. The super high molecular weight polyolefin fine particles are characterized in that [A] the limiting viscosity [Eta] as measured in decalin at 135 DEG C is not less than 5 dl/g, [B] the average particle diameter is not more than 20 [mu]m, and [C] particles having a diameter within the range of 0-40 [mu]m are contained in an amount of not less than 90% by mass.

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