Hexanedioic acid, polymer with (E)-2-butenedioic acid, 2,2'-[(1-methylethylidene) bis(4,1-phenyleneoxymethylene)]bis[oxirane], α,α'-[(1-methylethylidene) di-4,1-phenylene]bis[ω-hydroxypoly [oxy(methyl-1,2-ethanediyl)]], methyloxirane and oxirane