NOT KNOWN DETAILS ABOUT SPANDEX YARN MEANING

The crucial feature of those molecules is that they're long and versatile. This part of the spandex fiber is to blame for its stretching attribute. The other pre-polymer utilized to create spandex is often a polymeric di-isocyanate. This is the shorter chain polymer, which has an isocyanate (-NCO) group on both of those ends. The principal characte