68541-76-4 Oxirane, 2,2'-((1-methylethylidene)bis(4,1-phenyleneoxymethylene))bis-, polymer with alpha-(4-aminobutyl)-omega-(4-aminobutoxy)poly(oxy-1,4-butanediyl) alpha-(4-Aminobutyl-omega-aminopoly(oxy-1,4-butanediyl), polymer with 2,2-bis(p-(2,3-epoxyprpoxy)phenyl)propane