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US08729205B2 Flowability improver for engineering plastics, thermoplastic resin compositions containing the same and molded articles of the compositions 有权
工程塑料的流动性改进剂，含有其的热塑性树脂组合物和组合物的模制品

Flowability improver for engineering plastics, thermoplastic resin compositions containing the same and molded articles of the compositions
Abstract:
A flowability improver for engineering plastics which comprises a polymer (A) comprising of 50 to 99.5% by mass of aromatic vinyl monomer units (a1), 0.5 to 50% by mass of (meth)acrylate monomer units (a2) having an ester group of phenyl or substituted phenyl group, and 0 to 40% by mass of other monomer units (a3) (with the proviso that the total of the units (a1) to (a3) is 100% by mass) and having a weight average molecular weight of 5000 to 150000. The flowability improver can improve engineering plastics in melt-flow characteristics (processability in molding) and chemical resistance without impairing the plastics in heat resistance, exfoliation resistance, and transparency.
Abstract(Chinese):

一种工程塑料用流动性改进剂，其包含含有50〜99.5质量％芳族乙烯基单体单元（a1）的聚合物（A），0.5〜50质量％的具有酯基的（甲基）丙烯酸酯单体单元（a2） 的苯基或取代的苯基，0〜40质量％的其他单体单元（a3）（前提条件是单元（a1）〜（a3）的合计为100质量％），重均分子量 流动性改进剂可以改善工程塑料的熔体流动特性（成型加工性）和耐化学性，而不损害塑料的耐热性，耐剥离性和透明度。

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