1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,2-ethanediyl) and 1,1'-methylenebis(4-isocyanatocyclohexane) 384849-82-5 67554-43-2 Polyethylene glycol, trimethylolpropane, bis(4,4'-isocyanatocyclohexyl)methane polymer