1,3-Benzenedicarboxylic acid, 5-sulfo-, 1,3-dimethyl ester, sodium salt, polymer with 1,3-benzenedicarboxylic acid, dimethyl 1,4-benzenedicarboxylate,alpha-hydro-omega-hydroxypoly(oxy-1,2-ethanediyl) and 2,2-oxybis(ethanol)