Propylene-Based Elastomeric Composition
    32.
    发明申请
    Propylene-Based Elastomeric Composition 有权
    丙烯弹性组合物

    公开(公告)号:US20110118418A1

    公开(公告)日:2011-05-19

    申请号:US13010558

    申请日:2011-01-20

    IPC分类号: C08L23/24 C08L23/20 C08L23/16

    摘要: The present invention includes a polyolefin elastomeric composition comprising a propylene-based elastomer having at least seventy five weight percent units derived from propylene, the propylene-based elastomer exhibiting a heat of fusion of from 1 to 35 Joules/gram, a weight average molecular weight of from 5400 to 875000 g/mol, and a permanent set of less than 40%; and a homogeneous ethylene-alpha olefin interpolymer having a molecular weight distribution of less than 3.5, a density from 0.885 to 0.915 g/ml, and a heat of fusion of from 65 to 125 Joules/gram, wherein the ratio of the propylene-based elastomer to the homogeneous ethylene-alpha olefin interpolymer is from 97:3 to 80:20, and wherein the composition exhibits a heat of fusion from 2 to 55 Joules/gram, and a 2% secant flexural modulus of less than 69 MPa.

    摘要翻译: 本发明包括一种聚烯烃弹性体组合物,其包含丙烯基弹性体,其具有衍生自丙烯的至少75重量%的单元,所述丙烯基弹性体显示出1至35焦耳/克的熔化热,重均分子量 为5400〜875000g / mol,永久变形小于40%。 和分子量分布小于3.5,密度为0.885至0.915g / ml,熔融热为65至125焦耳/克的均匀乙烯-α-烯烃互聚物,其中丙烯基 均匀乙烯-α-烯烃互聚物的弹性体为97:3至80:20,其中该组合物显示2至55焦耳/克的熔化热和小于69MPa的2%正割弯曲模量。