Chemical path to polyurethane polymer Utilized in production of spandex. Spandex is principally composed of a polyurea derived within the reaction of the diol plus a diisocyanate. Two classes of spandex are outlined by the "macrodiols". Just one class of macrodiols could be the oligomer made from tetrahydrofuran (i. The https://georgep740dee8.wikiworldstock.com/user