Process for preparing poly(trimethylene 1,3-terephthalate) fiber

The present invention relates to a process for spinning poly(trimethylene terephthalate) filaments/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° C. and 48.65 per second shear rate. I...

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Bibliographic Details
Main Author CHANG JING CHUNG,DOMMEL RICHARD L
Format Patent
LanguageEnglish
Published 31.01.2007
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
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Summary:The present invention relates to a process for spinning poly(trimethylene terephthalate) filaments/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° C. and 48.65 per second shear rate. It is spun and the filaments are converged into yarn. The filaments have a denier greater than 1 and the yarn has a denier greater than 210.
Bibliography:Application Number: CN200580001824