1,4-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 1,2-ethanediol, 2,2'-[1,2-ethanediylbis(oxy)]bis[ethanol], 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and α,α'-[(1-methylethylidene)di-4,1-phenylene]bis[ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)]], benzoate (ester)