2-Oxepanone, polymer with 1,4-butanediol, alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)) and 1,1'-methylenebis(4-isocyanatobenzene) 66120-74-9 Diphenylmethane diisocyanate, polycaprolactone, polypropylene etherglycol, 1,4-butanediol polymer