68459-90-5 Poly(oxy(methyl-1,2-ethanediyl)), alpha,alpha',alpha''-1,2,3-propanetriyltris(omega-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene alpha,alpha',alpha''-1,2,3-Propanetriyltris(omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))), 1,3-diisocyanato-2-methylbenzene polymer