ANTISTATIC AGENT, ANTISTATIC COMPOSITION COMPRISING SAME, ANTISTATIC RESIN COMPOSITION COMPRISING SAME, AND MOLDED ARTICLE THEREOF

Provided are: an antistatic agent which is capable of continuously imparting an excellent antistatic effect to a synthetic resin and has high storage stability and good productivity (cutting property); an antistatic composition comprising the same; an antistatic resin composition comprising the same; and a molded article thereof. The antistatic agent contains at least one kind of a polymer compound (E), which is obtained by reacting a polyester (a) obtained by reacting a diol (a1) with a dicarboxylic acid (a2), a compound (b) having at least one ethyleneoxy group and carrying hydroxyl groups at both ends and an epoxy compound (D) having at least two epoxy groups, wherein the diol (a1) is 1,4-butanediol and/or ethylene glycol and the dicarboxylic acid (a2) is succinic acid or a dicarboxylic acid mixture containing succinic acid. 本发明提供可对于合成树脂持续赋予优异的抗静电效果，进而保存稳定性与生产率(切割性)优异的抗静电剂、包含其的抗静电剂组合物、包含这些的抗静电性树脂组合物及其成型体。本发明的抗静电剂含有1种以上的高分子化合物(E)，该高分子化合物(E)是使如下者进行反应而得到的：使二醇(a1)与二羧酸(a2)反应而得到的聚酯(a)；具有1个以上亚乙氧基的在两末端具有羟基的化合物(b)；