The Ultimate Guide To spandex yarn brands
Chemical route to polyurethane polymer used in manufacture of spandex. Spandex is especially composed of a polyurea derived with the reaction of the diol as well as a diisocyanate. Two lessons of spandex are described because of the "macrodiols". 1 course of macrodiols may be the oligomer manufactured from tetrahydrofuran (i.The fair Within this fe