Chemical path to polyurethane polymer Utilized in production of spandex. Spandex is especially made up of a polyurea derived from the response of the diol and also a diisocyanate. Two classes of spandex are outlined by the "macrodiols". One course of macrodiols will be the oligomer generated from tetrahydrofuran (i. https://johng173lll1.blogrenanda.com/profile