69961-71-3 Hexanedioic acid, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,2-ethanediyl), 1,1'-methylenebis(4-isocyanatobenzene) and 2-oxepanone Polyethylene glycol, adipic acid, epsilon-caprolactone, 1,1'-methylenebis(4-isocyanatobenzene) polymer