Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 1,4-cyclohexanedimethanol, 1,3-diisocyanatomethylbenzene, hydrazine and α-hydro-ω-hydroxypoly( oxy-1,4-butanediyl)

Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 1,4-cyclohexanedimethanol, 1,3-diisocyanatomethylbenzene, hydrazine and .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl)