Copolymer of poly (trimethylene terephthalate), process to produce the same, copolymer fiber of poly (trimethylene terephthalate), process to produce the same, fiber, and fiber product

摘要

"POLY COPYLOMER (TRIMETHYLENE TEREFTALATE), PROCESS TO PRODUCE THE SAME, POLY COPOLYMER FIBER (TYLENE TEREFTALATE), PROCESS TO PRODUCE THE SAME, TEXTILE FIBER, AND, FIBER PRODUCT". The present invention provides poly (trimethylene terephthalate) copolymerized with ester-forming sulfonate and a fiber thereof. The polymer of the present invention has a high boiling point, a small loss in melting viscosity and a high molecular weight. The fiber of the present invention has a high hardness, excellent whiteness and is dyeable with a cationic dye, thus being usable in garments, carpets or non-woven sheets, etc.