Polyolefin composition having a high balance of stiffness and impact strength
    1.
    发明授权
    Polyolefin composition having a high balance of stiffness and impact strength 有权
    具有高刚度和冲击强度平衡的聚烯烃组合物

    公开(公告)号:US06395832B1

    公开(公告)日:2002-05-28

    申请号:US09582599

    申请日:2000-06-28

    IPC分类号: C08L2310

    摘要: A polyolefin composition comprising (percentage by weight): (A) from 40 to 60% of a broad molecular weight distribution propylene polymer (component A) having a polydispersity index from 5 to 15 and melt flow rate of from 80 to 200 g/10 min (according to ASTM-D 1238, condition L); and (B) from 40 to 60% of a partially xylene-insoluble olefin polymer rubber (component B) containing at least 65% by weight of ethylene; the IVS/IVA ratio between the intrinsic viscosity (IVS) of the portion soluble in xylene of the polyolefin composition at room temperature and the intrinsic viscosity (IVA) of component (A) ranging from 2 to 2.5, both values on intrinsic viscosity being measured in tetrahydronaphthalene at 135° C. Said composition finds application in automotive field.

    摘要翻译: 包含(重量百分比)的聚烯烃组合物:(A)40-60%的分子量分布多的丙烯聚合物(组分A),其多分散指数为5至15,熔体流动速率为80至200g / 10 min(根据ASTM-D 1238,条件L); 和(B)含有至少65重量%乙烯的部分二甲苯不溶性烯烃聚合物橡胶(组分B)的40至60% 在室温下可溶于聚烯烃组合物的二甲苯的部分的特性粘度(IVS)与组分(A)的特性粘度(IVA)在2至2.5之间的IVS / IVA比,测量的特性粘度值 在四氢萘中在135℃。所述组合物可用于汽车领域。