THE ULTIMATE GUIDE TO SPANDEX YARN BRANDS

Chemical route to polyurethane polymer used in production of spandex. Spandex is principally composed of a polyurea derived through the response of a diol and also a diisocyanate. Two courses of spandex are outlined because of the "macrodiols". One class of macrodiols may be the oligomer developed from tetrahydrofuran (i.Subsequently, DuPont Fibers