英文名称:1,3-Benzenedicarboxylic acid, polymer with 1,4-butanediol and dimethyl 1,4-benzenedicarboxylate; 1,3-Benzenedicarboxylic acid, polymer with 1,4-butanediol and dimethyl 1,4-benzenedicarboxylate; isophthalic acid/dimethyl terephthalate/1,4-butanediol