Chemical path to polyurethane polymer used in creation of spandex. Spandex is mainly composed of a polyurea derived through the reaction of the diol along with a diisocyanate. Two lessons of spandex are defined via the "macrodiols". A single course of macrodiols would be the oligomer created from tetrahydrofuran (i. https://antonioa852hhh9.national-wiki.com/user