POLYPROPYLENE COMPOSITION FOR FOAMING
    203.
    发明申请

    公开(公告)号:US20170145200A1

    公开(公告)日:2017-05-25

    申请号:US15425759

    申请日:2017-02-06

    Abstract: The present invention relates to a new polypropylene composition for molded articles, such as finished parts for the automotive industry. A composition comprising: (A) from 40 to 85% by weight of a first propylene-based component being selected from propylene homopolymers, propylene copolymers and heterophasic propylene polymer, such first propylene-based component having a flexural modulus higher than 800 MPa; (B) from 5 to 20% by weight of a second propylene-based component being a heterophasic propylene polymer comprising: (B1) from 20 to 90% by weight of a crystalline polypropylene, and (B2) from 10 to 80% by weight of a copolymer of ethylene and at least one C3-C10 alpha-olefin, such copolymer containing from 10 to 70% by weight of ethylene, being soluble in xylene at room temperature, and having an intrinsic viscosity in tetrahydronaphtalene at 135° C. of higher than 3.5 dl/g; and (C) from 10 to 40% by weight of glass fibers.

    Polyolefin compositions
    210.
    发明授权
    Polyolefin compositions 有权
    聚烯烃组合物

    公开(公告)号:US09321913B2

    公开(公告)日:2016-04-26

    申请号:US14352868

    申请日:2012-10-19

    CPC classification number: C08L23/12 C08L23/0815 C08L2666/06

    Abstract: A polyolefin compositions comprising: A) From 77 wt % to 90 wt %, of a propylene homopolymer having the fraction soluble in xylene at 25° C. lower than 2 wt %; B) from 10 wt % to 23 wt % of a copolymer of ethylene with one C4-C10 alpha-olefin containing from 20 wt % to 30 wt %, of said C4-C10 alpha-olefin derived units; said composition having the value of melt flow rate (MFR) at 230° C., 2.16 kg of from 0.5 to 4.5 g/10 min; the total content of ethylene of from 10 wt % to 18 wt %; the value of the intrinsic viscosity of the total fraction soluble in Xylene at 25° C. (AMXSIVtot) is less than 1.5 dl/g.

    Abstract translation: 一种聚烯烃组合物,其包含:A)77重量%至90重量%的在25℃下可溶于二甲苯的级分低于2重量%的丙烯均聚物; B)10重量%至23重量%的乙烯与一种含有20重量%至30重量%的所述C 4 -C 10α-烯烃衍生单元的C 4 -C 10α-烯烃的共聚物; 所述组合物在230℃下的熔体流动速率(MFR)值为2.16kg,为0.5-4.5g / 10min; 乙烯的总含量为10重量%至18重量%; 在25℃下可溶于二甲苯的总馏分的特性粘度(AMXSIVtot)的值小于1.5dl / g。

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