Supercharge Your Innovation With Domain-Expert AI Agents!

Copolyester staple fiber and preparation method thereof

A copolyester and polyester technology, which is applied in the field of atmospheric pressure disperse dyeable copolyester staple fibers, copolyester staple fibers and their manufacturing fields, can solve difficult spinning, poor fiber physical properties, and poor heat resistance. and other problems, to achieve the effect of good dyeing performance, simple and easy production method, and good heat resistance performance.

Active Publication Date: 2012-05-30
TORAY IND INC
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat resistance of these polyesters is still poor, leading to problems such as difficulty in spinning or poor physical properties of fibers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add bishydroxyethyl terephthalate into the esterification reaction tank, keep the temperature at 250°C and the pressure at 1.2×10 5 Pa, the high-purity terephthalic acid of 8.25kg and the ethylene glycol slurry of 3.54kg are gradually added to the esterification reaction layer in 4 hours, then carry out the esterification reaction of 1 hour, finally from the esterification reactant obtained 10.2kg was taken and added to the polycondensation reaction layer.

[0035] The esterification reaction product was kept at 250° C. under normal pressure, and 2-methyl-1,3 propanediol was added in an amount corresponding to 10 mol% of all diols in the obtained polyester and stirred for 30 minutes. Then add phosphoric acid with a phosphorus atomic weight equivalent to 18 ppm of the polymer, 5 minutes later add antimony trioxide with an antimony atomic weight equivalent to 230 ppm of the polymer, and cobalt acetate with a cobalt atomic weight equivalent to 15 ppm of the polymer. After...

Embodiment 2

[0049] Select to add PEG10003wt% in the copolyester described in Example 1 and make 2-methyl-1,3 propanediol content is 9.2mol%, length is 38mm short fiber, after spinning into 45 yarns according to Example 1 After dyeing the tubular knitted fabric by the method, when the dyestuff is 0.3owf%, the L value is 35, and the color fastness to light is above grade 4. When the dye is 5owf%, the L value is 22, and the washing fastness is grade 4. Adding PEG can effectively improve the dyeability during normal pressure dyeing.

Embodiment 3

[0051] Through the slice preparation method described in Example 1, the esterification reaction product is kept at 250°C and under normal pressure, and 2-methyl-1,3-propanediol equivalent to 21mol% of all diols in the obtained polyester is added At a spinning temperature of 280°C, a cross-section spinneret is used, melt spinning, winding, winding, balance clustering, guide wire, pre-stretching, oiling, and then crimping, cutting, and packaging after one pass Obtained 2-methyl-1, the content of 3 propanediol is 19.8mol%, fineness is 1.5dtex, and length is 38mm cross section short fiber, obtains 45 yarns through spinning, dyeing method 95 ℃ × by the described embodiment 1 Dyeing under the condition of 30min, when the dye is 0.3owf%, the L value of the tubular knitted fabric is 32, and the light fastness is grade 4; when the dye is 5owf%, the L value is 21, and the washing fastness is above grade 4.

[0052] Without the addition of 2-methyl-1,3 propanediol equivalents, the dyeing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Finenessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a copolyester staple fiber and a preparation method thereof. The copolyester staple fiber contains 2-methyl-1,3-propylene glycol, the content of 2-methyl-1,3-propylene glycol in the staple fiber is 1 mol% to 20 mol%, and the length of the staple fiber is less than 150 mm. The copolyester staple fiber is advantageous in dyeing property, heat resistance and dye fastness, and can be dyed at normal temperature and under normal pressure.

Description

technical field [0001] The invention relates to a copolyester staple fiber and a manufacturing method thereof, in particular to a normal pressure disperse dye dyeable copolyester staple fiber, which belongs to the field of synthetic fibers. Background technique [0002] Polyester fibers have achieved impressive development since their mass production due to their excellent properties. [0003] With the development of technology, polyester fiber continues to meet the needs of the society in quantity, and at the same time, it is also undergoing more humanized improvements in quality. In terms of improving the hand feeling, people make polyester have a more comfortable feel through means such as special-shaped cross-section and copolymerization. In terms of improving the appearance, people use special processing methods to make the cloth surface appear dark and light-colored stripes or thick-detailed stripes, etc. . However, it is still a difficult task to improve the dyeing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01F6/84D01D5/08
Inventor 景红川清水敏昭周永华
Owner TORAY IND INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com