Chemical route to polyurethane polymer used in creation of spandex. Spandex is principally composed of a polyurea derived from the response of a diol along with a diisocyanate. Two lessons of spandex are defined with the "macrodiols". Just one class of macrodiols may be the oligomer created from tetrahydrofuran (i. https://aaronh295opp2.slypage.com/profile