68154-18-7 Castor oil, poly(hydroxy)polybutadiene, 1,1'-methylenebis(4-isocyanatobenzene), 1,1'-((1-methyl-1,2-ethanediyl)bis(oxy))bis-2-propanol polymer Castor oil, polymer with 1,1'-methylenebis(4-isocyanatobenzene), 1,1'-((1-methyl-1,2-ethanediyl)bis(oxy))bis(2-propanol) and hydroxy-terminated polybutadiene