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    • 10. 发明授权
    • Impact-modified compositions
    • 冲击改性组合物
    • US08969476B2
    • 2015-03-03
    • US11260711
    • 2005-10-27
    • Albin Peter BerzinisJames Edward Pickett
    • Albin Peter BerzinisJames Edward Pickett
    • C08L25/12C08L51/00C08F265/04
    • C08F265/04C08F212/10
    • In one of its aspects the invention is directed to rubber modified thermoplastic resin compositions comprising discontinuous elastomeric phase particles derived from a unitary rubber substrate having at least a bimodal particle size distribution, wherein the elastomeric phase particles comprise a polymer having structural units derived from at least one (C1-C12)alkyl(meth)acrylate monomer and are dispersed in a rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is grafted as a shell to elastomeric phase core particles, and wherein the rigid thermoplastic phase comprises structural units derived from at least one vinyl aromatic monomer, at least one monoethylenically unsaturated nitrile monomer and at least one (C1-C12)alkyl- or aryl-(meth)acrylate monomer. In another aspect the rigid thermoplastic phase of the compositions comprises a first thermoplastic phase at least a portion of which is grafted to the elastomeric phase; and a second thermoplastic phase comprising a polymer prepared separately in the absence of elastomeric phase and added to the composition.
    • 在其一个方面,本发明涉及橡胶改性的热塑性树脂组合物,其包含衍生自具有至少双峰粒度分布的单一橡胶基质的不连续弹性体相颗粒,其中弹性体相颗粒包含具有至少衍生的结构单元的聚合物 一种(甲基)丙烯酸(C 1 -C 12)烷基酯单体,并分散在刚性热塑性相中,其中刚性热塑性相的至少一部分作为壳接枝到弹性体相核心颗粒上,其中刚性热塑性相包括结构 衍生自至少一种乙烯基芳族单体,至少一种单烯属不饱和腈单体和至少一种(C1-C12)烷基 - 或芳基 - (甲基)丙烯酸酯单体的单元。 在另一方面,组合物的刚性热塑性相包含第一热塑性相,其至少一部分接枝到弹性体相; 和第二热塑性相,其包含在不存在弹性体相的情况下单独制备的聚合物并加入到组合物中。