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...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English |
Published |
31.01.2007
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
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 |