1,3-Propanediol, 2,2-dimethyl-, polymer with alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)) and 1,1'-methylenebis(4-isocyanatobenzene) 70953-89-8 Polypropylene glycol, neopentyl glycol, 1,1'-methylenebis(4-isocyanatobenzene) polymer