1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene and alpha,alpha'-((1-methylethylidene)di-4,1-phenylene)bis(omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))), hydroxy-terminated 68611-37-0