PROCESS FOR PREPARING POLY(TRIMETHYLENE TEREPHTHALATE) FIBER

• Main Author: JINGUNG CHANG
• Format: Patent
• Language: English; Spanish
• Published: 01.09.2006
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS; FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE; MECHANICAL FINISHING OF YARNS OR ROPES; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES; WARPING OR BEAMING; YARNS; YARNS OR THREADS

The present invention relates to processes using poly(trimethylene terephthalate) filaments (2)/yarn. The poly(trimethylene terephthalate) has a number average molecular weight of at least about 26500 and a melt viscosity of at least about 350 Pascals at 250 degree C and 48.65 per second shear rate. The poly(trimethylene terephthalate) is spun into filaments (2) and the filaments (2) are converged into yarn. The filaments have a denier greater than 1 and the yarn has a denier greater than 210. La presente invencion se refiere a procesos que usan filamentos de poli(trimetilentereftalato) (2)/hilo. El poli(trimetilentereftalato) tiene un numero de peso molecular promedio de por lo menos aproximadamente 26,500 y una viscosidad de fundido de por lo menos aproximadamente 350 Pascales a 250 degree C y una velocidad cortante de 48.65 por segundo. El poli(trimetilentereftalato) se hila en filamentos (2) y los filamentos (2) se convergen en hilo. Los filamentos tienen un denier mayor de 1 y el hilo tiene un denier mayor de 210.