PTT is polytrimethylene terephthalate, through the PTA and 1-3 from propylene glycol polymer is a thermoplastic polyester resin, has a high rate of degradation and rapid crystallization rate, the need for blood The PTT resin, solid-phase polymerization can be achieved.

PTT polyester resin, has good fiber-forming properties, processing performance, electrical performance, mechanical properties and dimensional stability, is widely used, very promising. In fiber, particularly high-quality carpet fiber with a considerable advantage in the elastic fiber, glass fiber filling modified, and other fields, can be replaced by nylon materials.