| abstract |
(57) [Summary] [Objective] To obtain a polyether ester block copolymer composition having improved temperature dependence in elastic recovery. [Structure] Using terephthalic acid and / or 2,6-naphthalenedicarboxylic acid, an aliphatic glycol and a polyoxyalkylene glycol as constituents, the tangent maximum temperature of β dispersion in viscoelastic behavior and the ratio of the tangent loss at 30 ° and 70 ° C. And a reduced specific viscosity of 1.2 or more (polyester ester block copolymer (component A)) In, a salt of one or more metals selected from zinc, magnesium, calcium and cobalt or a compound thereof and one or more phosphorus compounds selected from phosphonic acid, phosphonous acid and their esters, and And / or talc (component B) is contained in the polyether ester block copolymer composition. |