Production of blend of polyolefin and organopolysiloxane
    210.
    发明授权
    Production of blend of polyolefin and organopolysiloxane 有权
    生产聚烯烃和有机聚硅氧烷的共混物

    公开(公告)号:US09527988B2

    公开(公告)日:2016-12-27

    申请号:US14429004

    申请日:2013-09-19

    Abstract: A process for the production of a polymer composition is disclosed. The polymer composition comprises an organopolysiloxane dispersed in a thermoplastic organic polymer liable to thermo-radical degradation or cross-linking when subjected to a high compounding energy at a temperature above its melting point. In a first step (I), a thermoplastic organic polymer and an organopolysiloxane are mixed at a temperature at which both the thermoplastic organic polymer and the organopolysiloxane are in liquid phases to form a masterbatch. In a second step (II), the masterbatch is mixed with further thermoplastic organic polymer to form a polymer composition having a lower concentration of organopolysiloxane than that in the masterbatch. In the first step (I), the thermoplastic organic polymer and the organopolysiloxane are mixed in the presence of an additive capable of inhibiting the thermo-radical degradation or cross-linking of the thermoplastic organic polymer. The organopolysiloxane of the masterbatch remains stable during processing.

    Abstract translation: 公开了制备聚合物组合物的方法。 当在高于其熔点的温度下经受高配合能量时,聚合物组合物包含分散在易于热自由基降解或交联的热塑性有机聚合物中的有机聚硅氧烷。 在第一步骤(I)中,将热塑性有机聚合物和有机聚硅氧烷在热塑性有机聚合物和有机聚硅氧烷都处于液相中的温度下混合以形成母料。 在第二步(II)中,母料与另外的热塑性有机聚合物混合以形成具有比母料中低的有机聚硅氧烷浓度较低的聚合物组合物。 在第一步骤(I)中,将热塑性有机聚合物和有机聚硅氧烷在能够抑制热可降解或热塑性有机聚合物交联的添加剂的存在下混合。 母料的有机聚硅氧烷在加工过程中保持稳定。

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