Resin composition for bumpers
    4.
    发明授权
    Resin composition for bumpers 失效
    保险杠用树脂组合物

    公开(公告)号:US4960823A

    公开(公告)日:1990-10-02

    申请号:US479020

    申请日:1990-02-12

    IPC分类号: C08L23/16 C08L23/00 C08L53/00

    CPC分类号: C08L53/00

    摘要: A resin composition for bumpers including:(a) 50-65 parts by weight of a propylene-ethylene block copolymer including:(i) 60-75 weight % of a propylene-ethylene block copolymer having an ethylene content of 4-20 weight % and a melt flow rate of 9-30 g/10 min (230.degree. C., 2.16 kg load), and(ii) 40-25 weight % of a propylene-ethylene block copolymer having an ethylene content of 4-20 weight % and a melt flow rate of 40-80 g/10 min (230.degree. C., 2.16 kg load);(b) 40-25 parts by weight of an ethylene-propylene copolymer rubber and/or an ethylene-propylene-diene terpolymer rubber each having an ethylene content of 50-80 weight % and a Mooney viscosity ML.sub.1+4 (100.degree. C.) of 80 or less; and(c) 10-15 parts by weight of high-density polyethylene having a melt index of 1-20 g/10 min (190.degree. C., 2.16 kg load),(a)+(b)+(c) being 100 parts by weight.

    摘要翻译: 一种保险杠用树脂组合物,其包含:(a)50-65重量份的丙烯 - 乙烯嵌段共聚物,其包含:(i)60-75重量%的乙烯含量为4-20重量%的丙烯 - 乙烯嵌段共聚物, 熔体流动速率为9-30g / 10min(230℃,2.16kg负荷),和(ii)40-25wt%乙烯含量为4-20wt%的丙烯 - 乙烯嵌段共聚物, 熔体流动速率为40-80g / 10min(230℃,2.16kg负荷); (b)40-25重量份乙烯 - 丙烯共聚物橡胶和/或乙烯 - 丙烯 - 二烯三元共聚物橡胶,其乙烯含量为50-80重量%,门尼粘度ML1 + 4(100℃) )为80以下; 和(c)10-15重量份熔体指数为1-20g / 10min(190℃,2.16kg负载),(a)+(b)+(c)的高密度聚乙烯为 100重量份。