polymer with 2,4-diisocyanato-1-methylbenzene and alpha-hydro-3-butanediol

1,3-Butanediol, polymer with 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly( oxy-1,4-butanediyl)

1,3-Butanediol, polymer with 2,4-diisocyanato-1-methylbenzene and .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl)