Process for making ABS polymeric blends
    3.
    发明授权
    Process for making ABS polymeric blends 失效
    制备ABS聚合物共混物的方法

    公开(公告)号:US06492467B1

    公开(公告)日:2002-12-10

    申请号:US09852103

    申请日:2001-05-09

    IPC分类号: C08F27902

    摘要: A process for the preparation of a blend of ABS polymers is disclosed. The invention comprises introducing a core/shell grafted rubber in the form of powder (crumb) to at least one stage of the continuous mass polymerization process for making an ABS polymer. Accordingly, the process comprises, in sequence, steps (i) through (iii) wherein (i) refers to charging into a first reactor a material system containing primarily monoalkenylaromatic monomer and an ethylenically unsaturated nitrile monomer having dissolved therein diene rubber under conditions to promote at least partial polymerization to form a partially polymerized first mixture and where (ii) refers to polymerizing the first mixture in a subsequent reactor to form a subsequent mixture and where (iii) refers to devolatilizing the subsequent mixture, and introducing said core/shell grafted rubber into at least one of step (i), (ii) and (iii) to yield a blend having a dispersed grafted rubber phase with a bimodal or multimodal particle size distribution.

    摘要翻译: 公开了制备ABS聚合物共混物的方法。 本发明包括将粉末(碎屑)形式的核/壳接枝橡胶引入到用于制备ABS聚合物的连续质量聚合方法的至少一个阶段。 因此,该方法按顺序包括步骤(i)至(iii),其中(i)指在第一反应器中装入主要包含单链烯基芳族单体和烯属不饱和腈单体的物质体系,其中二烯橡胶溶解在促进条件下 至少部分聚合以形成部分聚合的第一混合物,其中(ii)是指在随后的反应器中聚合第一混合物以形成随后的混合物,其中(iii)是指将后续混合物脱挥发分并将所述核/壳接枝 橡胶进入步骤(i),(ii)和(iii)中的至少一个,以产生具有双峰或多峰粒度分布的分散的接枝橡胶相的共混物。