Polypropylene resin, polypropylene resin composition, and foam-injection-molded article
    11.
    发明授权
    Polypropylene resin, polypropylene resin composition, and foam-injection-molded article 有权
    聚丙烯树脂,聚丙烯树脂组合物和泡沫注塑制品

    公开(公告)号:US08552116B2

    公开(公告)日:2013-10-08

    申请号:US13501193

    申请日:2010-10-12

    摘要: A polypropylene resin and a polypropylene resin composition are provided, which have excellent fluidity and foaming properties, and particularly in use for foam injection molding, allow molding with a narrow initial cavity clearance even if a large mold is used, and therefore can provide a thin, large-area foam-injection-molded article having good appearance. The invention relates to a polypropylene resin obtained by melt mixing a linear polypropylene resin, a radical polymerization initiator and a conjugated diene compound, wherein the polypropylene resin has a melt flow rate of more than 30 g/10 min and not more than 250 g/10 min as measured at 230° C. under a load of 2.16 kg; a melt tension at 200° C. of not less than 0.3 cN; and a loss tangent (tan δ) of not more than 6.0, the loss tangent being a ratio of loss modulus to storage modulus at an angular frequency of 1 rad/s in dynamic viscoelasticity measurement at 200° C., and also relates to a polypropylene resin composition for foam injection molding, containing the polypropylene resin.

    摘要翻译: 提供了具有优异的流动性和发泡性的聚丙烯树脂和聚丙烯树脂组合物,特别是在用于泡沫注射成型的情况下,即使使用大型模具,也能够使初始空腔间隙窄的成型,因此可以提供薄 具有良好外观的大面积泡沫注塑制品。 本发明涉及通过熔融混合线性聚丙烯树脂,自由基聚合引发剂和共轭二烯化合物而获得的聚丙烯树脂,其中聚丙烯树脂的熔体流动速率大于30g / 10min且不超过250g / 在230℃,2.16kg负荷下测定; 在200℃下的熔体张力不小于0.3cN; 和损耗角正切(tanδ)为6.0以下,损耗角正切为在200℃的动态粘弹性测定中的角频率为1弧度/秒的损耗模量与储能模量的比率,并且还涉及 用于泡沫注塑的聚丙烯树脂组合物,含有聚丙烯树脂。

    POLYPROPYLENE RESIN, POLYPROPYLENE RESIN COMPOSITION, AND FOAM-INJECTION-MOLDED ARTICLE
    12.
    发明申请
    POLYPROPYLENE RESIN, POLYPROPYLENE RESIN COMPOSITION, AND FOAM-INJECTION-MOLDED ARTICLE 有权
    聚丙烯树脂,聚丙烯树脂组合物和泡沫注塑成型

    公开(公告)号:US20120264886A1

    公开(公告)日:2012-10-18

    申请号:US13501193

    申请日:2010-10-12

    IPC分类号: C08F8/00 B29C45/00

    摘要: A polypropylene resin and a polypropylene resin composition are provided, which have excellent fluidity and foaming properties, and particularly in use for foam injection molding, allow molding with a narrow initial cavity clearance even if a large mold is used, and therefore can provide a thin, large-area foam-injection-molded article having good appearance. The invention relates to a polypropylene resin obtained by melt mixing a linear polypropylene resin, a radical polymerization initiator and a conjugated diene compound, wherein the polypropylene resin has a melt flow rate of more than 30 g/10 min and not more than 250 g/10 min as measured at 230° C. under a load of 2.16 kg; a melt tension at 200° C. of not less than 0.3 cN; and a loss tangent (tan δ) of not more than 6.0, the loss tangent being a ratio of loss modulus to storage modulus at an angular frequency of 1 rad/s in dynamic viscoelasticity measurement at 200° C., and also relates to a polypropylene resin composition for foam injection molding, containing the polypropylene resin.

    摘要翻译: 提供了具有优异的流动性和发泡性的聚丙烯树脂和聚丙烯树脂组合物,特别是在用于泡沫注射成型的情况下,即使使用大型模具,也能够使初始空腔间隙窄的成型,因此可以提供薄 具有良好外观的大面积注射成型品。 本发明涉及通过熔融混合线性聚丙烯树脂,自由基聚合引发剂和共轭二烯化合物而获得的聚丙烯树脂,其中聚丙烯树脂的熔体流动速率大于30g / 10min且不超过250g / 在230℃,2.16kg负荷下测定; 在200℃下的熔体张力不小于0.3cN; 和损耗角正切(tanδ)为6.0以下,损耗角正切为在200℃的动态粘弹性测定中的角频率为1弧度/秒的损耗模量与储能模量的比率,并且还涉及 用于泡沫注塑的聚丙烯树脂组合物,含有聚丙烯树脂。