Block polymer and antistatic agent comprising the same

摘要

The present invention provides a block polymer comprising a polyolefin and a hydrophilic polymer, being finely dispersed in resins, in particular polyolefins, without requiring any compatibilizer, and giving thermoplastic resin compositions, said compositions giving moldings having permanent antistatic properties at low block polymer addition levels even when they are produced by a method involving no shearing and having excellent mechanical strength as well as having an excellent compatibility so as to avoid molding or roll pollution at their formation.The present invention provides a block polymer (A)which has a structure such that blocks of a polyolefin (a) and blocks of a hydrophilic polymer (b) having a volume resistivity of 105 to 1011 OMEGA.cm are bonded together alternately and repeatedly;an antistatic agent comprising the block polymer (A);a resin composition comprising the block polymer (A) and a thermoplastic resin (B); anda molded product obtainable by coating or printing a molding comprised of a resin composition containing the block polymer (A).