ANTISTATIC AGENT, ANTISTATIC AGENT COMPOSITION CONTAINING SAME, ANTISTATIC RESIN COMPOSITION CONTAINING SAID ANTISTATIC AGENT OR SAID ANTISTATIC AGENT COMPOSITION, AND MOLDED BODY OF SAID ANTISTATIC RESIN COMPOSITION

摘要

The present invention provides: an antistatic agent which is capable of continuously imparting a synthetic resin with an excellent antistatic effect, while having excellent storage stability and excellent productivity (cutting properties); an antistatic agent composition which contains this antistatic agent; an antistatic resin composition which contains this antistatic agent or this antistatic agent composition; and a molded body of this antistatic resin composition.　The present invention contains one or more polymer compounds (C), each of which has a polyester segment (A) and a polyether segment (B), while having a structure where the segments (A) and (B) are bonded to each other via an ester bond, wherein: the segment (A) is composed of a polyester that is obtained from (a1) at least one of 1,4-butanediol and ethylene glycol, (a2) adipic acid and terephthalic acid, and (a3) a polyhydric alcohol compound that has three or more hydroxyl groups; the ratio of the terephthalic acid in component (a2) is 40% by mole or more but less than 100% by mole relative to the total number of moles of the adipic acid and the terephthalic acid; and the segment (B) is composed of (b) a polyethylene glycol.