Polymer resins having improved barrier properties and methods of making same
    44.
    发明授权
    Polymer resins having improved barrier properties and methods of making same 有权
    具有改进的阻挡性能的聚合物树脂及其制备方法

    公开(公告)号:US08476394B2

    公开(公告)日:2013-07-02

    申请号:US12875373

    申请日:2010-09-03

    IPC分类号: C08F210/02 C08F210/00

    摘要: A polymeric resin having a lower molecular weight (LMW) component and a higher molecular weight (HMW) component and the resin having a density of from about 0.955 g/cc to about 0.967 g/cc, a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s. A method comprising providing a catalyst system comprising at least one transition metal complex, an activator support, and a cocatalyst; contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin has a HMW component and a LMW component; and recovering the polyolefin, wherein the polyolefin has a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s.

    摘要翻译: 具有较低分子量(LMW)组分和较高分子量(HMW)组分的聚合物树脂,该树脂的密度为约0.955g / cc至约0.967g / cc,熔体指数为约0.5dg / min至约4.0dg / min,零剪切粘度为约3.0×10 3 Pa·s至约4.0×10 4 Pa·s。 一种包括提供包含至少一种过渡金属络合物,活化剂载体和助催化剂的催化剂体系的方法; 在适于形成聚烯烃的条件下使催化剂体系与烯烃接触,其中聚烯烃具有HMW组分和LMW组分; 并回收聚烯烃,其中聚烯烃的熔体指数为约0.5dg / min至约4.0dg / min,零剪切粘度为约3.0×10 3 Pa〜s至约4.0×10 4 Pa·s。