Polymer mixture comprising a polyester and copolyether ester block copolymer, articles formed therefrom

摘要

The invention relates to a polymer mixture which comprises A) a polyester and B) a copolyether ester block copolymer consisting of the reaction product of (a) at least one diol with 2-8 carbon atoms; (b) at least one dicarboxylic acid and (c) at least one ethylene oxide capped poly-(propylene oxide) glycol having an ethylene oxide content of 15-35% by weight and a number-averaged molecular weight of 1,500-3,000. Articles formed from the polymer mixture according to the invention have a reduced surface resistance. Addition of a flame-retardant leads to a further reduction of the surface resistance.