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    Propylene-based elastomeric composition
    29.
    发明授权
    Propylene-based elastomeric composition 有权
    基于丙烯的弹性体组合物

    公开(公告)号：US07893161B2

    公开(公告)日：2011-02-22

    申请号：US12088785

    申请日：2006-10-31

    申请人： Andy C. Chang ,  Thomas G. Pressly

    发明人： Andy C. Chang ,  Thomas G. Pressly

    IPC分类号： C08L23/00 ,  C08L23/04 ,  C08L23/10

    CPC分类号： C08L23/142 ,  C08L23/0815 ,  C08L2314/06 ,  C08L2314/08 ,  C08L2666/06

    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。