Chemical path to polyurethane polymer used in creation of spandex. Spandex is mainly composed of a polyurea derived from your reaction of a diol along with a diisocyanate. Two classes of spandex are defined via the "macrodiols". A single class of macrodiols is definitely the oligomer made from tetrahydrofuran (i. https://rebeccai296rss4.wikibyby.com/user