NOVEL TWO-COMPONENT FIBERS, HAVING DIFFERENT POLYMERIC DOMAINS, CRYSTALLINE AND AMORPHOUS, AND METHODS TO MANUFACTURE THEM.

摘要

The present invention refers to novel two-component fibers, having a polyamide domain and an non fiber-producer amorphous polymer domain, which is completely embedded inside, because oh which it is completely surrounded by polyamide domain. Preferred two-component fibers have a core-sheath structure wherein polyamide domain constitutes sheath, and non fiber-producer amorphous polymer constitutes core. Surprisingly, although core is formed from a non fiber-producer polymer, two-component fibers present properties comparable in many aspects to fibers formed from 100 percent polyamide. Preferably, fibers are concentric two-component fibers with core-sheath, having a nylon sheath and a core formed from polystyrene and methyl polymethacrylate. As amorphous polymeric domain, polystyrene is preferred and, particularly, athactic polystyrene.