Chemical route to polyurethane polymer Employed in production of spandex. Spandex is especially composed of a polyurea derived from the response of a diol plus a diisocyanate. Two classes of spandex are described from the "macrodiols". A person class of macrodiols is the oligomer developed from tetrahydrofuran (i. The main https://anciusx851fgh9.blognody.com/profile