A thermoplastic resin composition containing a graft copolymer (A) and a thermoplastic resin (B), in which the thermoplastic resin (B) contains a polymer having a vinyl cyanide monomer unit, the graft copolymer (A) and the thermoplastic resin (B) are contained in predetermined proportions based on the total amount of the graft copolymer (A) and the thermoplastic resin (B), the graft copolymer (A) has a main-chain polymer formed of a rubbery polymer and a graft chain, the graft chain has a vinyl cyanide monomer unit and at least one monomer unit copolymerizable with the vinyl cyanide monomer, the distribution of the content of the vinyl cyanide monomer unit in components derived from a graft chain has peak 1 having a peak top within a content range from 0 mass% or more to less than 10 mass%, and peak 2 having a peak top within a content range from 10 mass% or more to less than 55 mass%, and the difference between a representative value of the content represented by peak 1 and a representative value of the content represented by peak 2 is 10 mass% or more.
一种含有接枝共聚物(A)和热塑性
树脂(B)的热塑性
树脂组合物,其中热塑性
树脂(B)含有一种具有
乙烯基氰单体单元的聚合物,接枝共聚物(A)和热塑性
树脂(B)按照接枝共聚物(A)和热塑性
树脂(B)总量的预定比例含有、接枝共聚物(A)具有由橡胶聚合物和接枝链形成的主链聚合物,接枝链具有
乙烯氰单体单元和至少一个可与
乙烯氰单体共聚的单体单元、
乙烯基氰单体单元在由接枝链衍生的组分中的含量分布具有峰值 1,其峰值顶部的含量范围为 0 质量%或以上至小于 10 质量%,峰值 2 的峰值顶部的含量范围为 10 质量%或以上至小于 55 质量%,且峰值 1 所代表的含量代表值与峰值 2 所代表的含量代表值之间的差值为 10 质量%或以上。