1,3-Propanediol, 2,2-dimethyl-, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl), 1,1'-methylenebis(4-isocyanatobenzene) and 2,2'-(methylimino)bis(ethanol) 2,2-Dimethyl-1,3-propanediol, polymer with alpha-hydro-omega-hydroxypoly(oxy(1,4-butanediyl)), 2,2'-methyliminobisethanol and 1,1'-methylenebis(4-isocyanatobenzene) 68758-94-1