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    Controlled Long Chain Branching in EPDM by Post-Reactor Modification
    1.
    发明申请
    Controlled Long Chain Branching in EPDM by Post-Reactor Modification 有权

    公开(公告)号：US20220275121A1

    公开(公告)日：2022-09-01

    申请号：US17621935

    申请日：2020-06-18

    申请人： Dow Global Technologies LLC

    发明人： Santosh S. Bawiskar ,  Guang Ming Li ,  Tianzi Huang

    IPC分类号： C08F210/18 ,  C08F8/00

    摘要： The present disclosure provides a process. In an embodiment, the process includes providing a neat ethylene/ propy-lene/non-conjugated polyene terpolymer (n-terpolymer) having a Mooney viscosity (ML (1+4) at 125C) less than 100 Mooney units (MU). The process includes exposing the n-terpolymer to electron beam radiation at a dosage from 0.2 megaRad (MRad) to 1.3 MRad. The process includes forming a branched ethylene/propylene/non-conjugated polyene terpolymer (b-terpolymer) having a Mooney viscosity ML (1+4) at 125C from 25 MU to 135 MU.

    EPDM Blends with Long Chain Branching
    2.
    发明申请
    EPDM Blends with Long Chain Branching 有权

    公开(公告)号：US20220251360A1

    公开(公告)日：2022-08-11

    申请号：US17622069

    申请日：2020-06-18

    申请人： Dow Global Technologies LLC

    发明人： Santosh S. Bawiskar ,  Guang Ming Li ,  Tianzi Huang ,  Lizhi Liu ,  Xiaosong Wu

    IPC分类号： C08L23/16

    摘要： The present disclosure provides a composition. In an embodiment, the composition includes a non-irradiated ethylene/propylene/non-conjugated polyene terpolymer (nr-terpolymer) and a branched ethylene/propylene/non-conjugated polyene terpolymer (b-terpolymer). The b-terpolymer has: (A) a Mooney viscosity (ML 1+4 @ 125° C.) from 35 MU to 120 MU; (B) a rheology ratio from 55 to 110; and (C) a phase angle δ from 20° to 39°.