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CN105980474B 热塑性树脂组合物、以及成型体及其制造方法 有权

热塑性树脂组合物、以及成型体及其制造方法
摘要：
一种热塑性树脂组合物，其包含嵌段共聚物(a)和共聚物(b)，该嵌段共聚物(a)包含乙烯基芳香族单体单元60～80质量％和共轭二烯单体单元40～20质量％，该共聚物(b)包含乙烯基芳香族单体单元60～90质量％和不饱和腈单体单元40～10质量％，上述嵌段共聚物(a)具有以乙烯基芳香族单体单元为主体的至少1个聚合物嵌段(S)，上述嵌段共聚物(a)在‑73～‑10℃的范围具有至少1个动态粘弹性的tanδ的峰，上述嵌段共聚物(a)相对于上述共聚物(b)的质量比(a)/(b)为1/99～80/20。
摘要（英）：

A thermoplastic resin composition comprising: a block copolymer (a) having 60 to 80% by mass of a vinyl aromatic monomer unit and 40 to 20% by mass of a conjugated diene monomer unit; and a copolymer (b) having 60 to 90% by mass of a vinyl aromatic monomer unit and 40 to 10% by mass of an unsaturated nitrile monomer unit, wherein the block copolymer (a) has at least one polymer block (S) primarily having a vinyl aromatic monomer unit, the block copolymer (a) has at least one tan ´ peak of dynamic viscoelasticity at a temperature in a range of -73 to -10°C, and a mass ratio (a)/(b) of the block copolymer (a) to the copolymer (b) is 1/99 to 80/20.

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