1,4-Benzenedicarboxylic acid, polymer with 1,2-ethanediol, 2,2'-(1,2-ethanediylbis(oxy))bis(ethanol) and alpha,alpha'-((1-methylethylidene)di-4,1-phenylene)bis(omega-hydroxypoly(oxy-1,2-ethanediyl)) 72968-54-8