Elastomeric blends and method for their preparation
    4.
    发明公开
    Elastomeric blends and method for their preparation 失效
    Mischunge弹性体和它们的制备方法。

    公开(公告)号:EP0616009A3

    公开(公告)日:1995-01-04

    申请号:EP94301943.0

    申请日:1994-03-18

    IPC分类号: C08L23/26 C08L51/06

    摘要: Copolymer compositions useful as impact modifiers are prepared by blending, under reactive conditions, at least one functionalized addition polymer with an excess of at least one functionalized elastomer reactive therewith to form a preblend, and subsequently blending said preblend, under reactive conditions with a further amount of at least one functionalized addition polymer. The preferred addition polymers and elastomers are carbamate-functionalized styrene-acrylonitrile copolymers and maleic anhydride-grafted EPDM elastomers, respectively. The product of the two-step blending operation is a composition comprising a continuous addition polymer phase and elastomer particles dispersed therein, said elastomer particles containing occluded addition polymer. Said composition is stabilized by copolymer formation between the elastomer particles and the addition polymer.