1,6-Hexanediamine-4,4′-methylenediphenyl diisocyanate copolymer 1,6-Hexanediamine-4,4′diphenylmethane diisocyanate copolymer 1,6-Hexanediamine-MDI copolymer 1,6-Hexanediamine-methylenediphenylisocyanate copolymer 1,6-Hexanediamine, polymer with 1,1′-methylenebis[4-isocyanatobenzene] 4,4′-Diphenylmethane diisocyanate-hexamethylenediamine polymer 4,4′-MDI-1,6-hexanediamine copolymer Benzene, 1,1′-methylenebis[4-isocyanato-, polymer with 1,6-hexanediamine Bis(4-isocyanatophenyl)methane-hexamethylenediamine copolymer Diphenylmethane diisocyanate-1,6-hexanediamine copolymer Diphenylmethane-4,4′-diisocyanate-1,6-hexamethylenediamine copolymer Hexamethylenediamine-MDI copolymer Methylene diphenyl diisocyanate - 1,6-hexylenediamine copolymer