1,3-Benzenedicarboxylic acid, 5-sulfo-, monosodium salt, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid, .alpha.-hydro-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and 2,2-oxybisethanol, 2-oxepanone homo