70682-83-6 Poly(oxy(methyl-1,2-ethanediyl)), alpha-hydro-omega-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene and alpha-hydro-omega-hydroxypoly(oxy-1,2-ethanediyl) Poly(toluene 2,4-diisocyanate-polyethylene glycol-polypropylene glycol) copolymer