1,3-Benzenedicarboxylic acid, dimethyl ester, polymer with 1,4-butanediol, dimethyl 1,4-benzenedicarboxylate and 1,6-hexanediol 65899-71-0 Dimethyl terephthalate, dimethyl isophthalate, 1,6-hexanediol, 1,4-butanediol polymer