A polyester resin, and a molded article, a stretched film, and a bottle containing the polyester resin

摘要

A polyester resin comprising a dicarboxylic acid structural unit and a diol structural unit, wherein more than 0 mol% and 20 mol% or less of the diol structural unit is a unit derived from a diol having a cyclic acetal skeleton, the diol structural unit 70 to 98 mol% of the unit is a unit derived from a diol having an alicyclic skeleton, and a unit derived from ethylene glycol is included in the diol structural unit, and 80 mol% or more of the dicarboxylic acid structural unit A polyester resin that is a unit derived from terephthalic acid and has physical properties represented by the following (A). (A) The minimum value of semi-crystallization time based on the depolarization intensity method when melting at 280°C and crystallizing at constant temperature at 150 to 230°C is 600 seconds or less.