Polypropylene resin composition
    2.
    发明授权
    Polypropylene resin composition 失效
    聚丙烯树脂组合物

    公开(公告)号:US5145891A

    公开(公告)日:1992-09-08

    申请号:US236853

    申请日:1988-08-26

    IPC分类号: C08L23/12 C08K7/02 C08L53/00

    CPC分类号: C08K7/02

    摘要: A polypropylene resin composition superior in rigidity, resistances to heat distortion, to secondary deformation, to sink mark forming and to warpage deformation is provided which comprises a specified propylene-ethylene block copolymer and an organic fiber and an optionally added inorganic filler, or a specified modified propylene-ethylene block copolymer and an organic fiber and an optionary added inorganic filler.

    摘要翻译: 提供了具有优异的刚性,耐热变形性,二次变形,凹痕形成和翘曲变形的聚丙烯树脂组合物,其包含特定的丙烯 - 乙烯嵌段共聚物和有机纤维和任选添加的无机填料,或指定的 改性丙烯 - 乙烯嵌段共聚物和有机纤维和选择性添加的无机填料。

    Polypropylene interior parts for autocars
    3.
    发明授权
    Polypropylene interior parts for autocars 失效
    用于汽车的聚丙烯内部零件

    公开(公告)号:US4638030A

    公开(公告)日:1987-01-20

    申请号:US748438

    申请日:1985-06-25

    CPC分类号: B60R13/0206 B60R13/02

    摘要: Polypropylene interior parts for autocars having overcome the drawback of their permanent bulge or secondary deformation due to high temperature exposure is provided, which parts are obtained by molding a material comprising a propylene-ethylene block copolymer prepared by polymerizing propylene at a first stage so that the resulting propylene homopolymer can have a relation between its isotactic pentad ratio (P) and MFR of1.00.gtoreq.P.gtoreq.0.015 log MFR+0.955and can occupy 70 to 95% by weight of the total polymerization quantity, followed by polymerizing ethylene or ethylene and propylene in 30 to 5% by weight of the total polymerization quantity at at least one stage, so as to give an ethylene content occupying 3 to 12% by weight of the total polymerization quantity.

    摘要翻译: 提供了用于自动车的聚丙烯内部件,其克服了由于高温暴露引起的永久膨胀或二次变形的缺点,这些部件通过模制包含通过在第一阶段聚合丙烯而制备的丙烯 - 乙烯嵌段共聚物的材料而获得, 得到的丙烯均聚物可以具有其全同立构五价比(P)和MFR之间的关系,其总量为总聚合量的70-95重量%,然后聚合乙烯 或乙烯和丙烯在至少一个阶段的总聚合量的30至5重量%,以使乙烯含量占总聚合量的3-12重量%。