65733-69-9 Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)), O,O'-bis((1-methylpropylidene)amino) deriv. Polyhydroxy polybutadiene, polymer with 1,1'-methylenebis(4-isocyanatobenzene)