Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultra-bright polyester medium-strength yarn and preparation method thereof

A technology of polyester and bright light, which is applied in filament/thread forming, single-component polyester artificial filament, fiber treatment, etc., and can solve problems such as refractory biodegradation and environmental pollution

Active Publication Date: 2020-10-16
JIANGSU HENGLI CHEM FIBER
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong chemical inertness of polyester under natural conditions, it is difficult to be biodegraded, and a large number of waste polyester textiles cause serious pollution to the environment.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultra-bright polyester medium-strength yarn and preparation method thereof
  • Ultra-bright polyester medium-strength yarn and preparation method thereof
  • Ultra-bright polyester medium-strength yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The preparation method of super bright polyester mid-strength yarn, the steps are as follows:

[0071] (1) prepare modified polyester;

[0072] (1.1) Esterification reaction;

[0073] Terephthalic acid, ethylene glycol, 2,2-difluoro-1,3-malonic acid, 3-trimethylsilyl-1,2-propanediol and 5-tert-butyl-1,3-benzenedicarboxylic acid Make a slurry, add antimony trioxide and triphenyl phosphate and mix evenly, pressurize in a nitrogen atmosphere to carry out esterification reaction, the pressurized pressure is 0.3MPa, the temperature of the esterification reaction is 250°C, when the esterification reaction The end point of the esterification reaction is when the amount of water distilled out reaches 90.1% of the theoretical value, and the molar ratio of terephthalic acid to ethylene glycol is 1:1.2, 2,2-difluoro-1,3-malonic acid , 3-trimethylsilyl-1,2-propanediol and 5-tert-butyl-1,3-benzenedicarboxylic acid add-on sum is 5mol% of terephthalic acid add-on amount, 2,2-difluor...

Embodiment 2

[0088] The preparation method of super-bright polyester mid-strength yarn, the steps are as follows:

[0089] (1) prepare modified polyester;

[0090] (1.1) Preparation of 3-trimethylsilyl-3-methyl-1,2-propanediol;

[0091] (a) Mix 3-trimethylsilyl-3-methylpropene, peracetic acid and dichloromethane at a molar ratio of 1:5:10, and react at a temperature of 35°C for 5 hours with stirring during the reaction. After the end, the solvent is removed, and trimethylsilylpropylene epoxide is obtained through purification and refining;

[0092] (b) Mix water, concentrated sulfuric acid and trimethylsilyl propylene epoxide, heat it in a water bath to 80°C under stirring conditions, keep it warm for 10 minutes, cool to room temperature after the reaction, and obtain the following formula after neutralization, distillation, separation and purification: The dihydric alcohol of band trimethylsilyl side group shown in formula (I), R in formula (I) is-CH(CH 3 )-, concentrated sulfuric acid...

Embodiment 3

[0106] The preparation method of super bright polyester mid-strength yarn, the steps are as follows:

[0107] (1) prepare modified polyester;

[0108] (1.1) Preparation of 3-trimethylsilyl-3-methyl-1,2-propanediol;

[0109] (a) Mix 3-trimethylsilyl-3-methylpropene, peracetic acid and dichloromethane at a molar ratio of 1:10:15, and react at a temperature of 40°C for 8 hours with stirring during the reaction. After the end, the solvent is removed, and trimethylsilylpropylene epoxide is obtained through purification and refining;

[0110] (b) Mix water, concentrated sulfuric acid and trimethylsilyl propylene epoxide, heat it in a water bath to 85°C under stirring conditions, keep it warm for 15 minutes, cool to room temperature after the reaction, and obtain the following formula after neutralization, distillation, separation and purification: The dihydric alcohol of band trimethylsilyl side group shown in formula (I), R in formula (I) is-CH(CH 3 )-, concentrated sulfuric aci...

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
molecular weight distributionaaaaaaaaaa
elongation at breakaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to an ultra-bright polyester moderately-strong filament and a preparing method thereof. The ultra-bright polyester moderately-strong filament is prepared through metering of modified polyester melt, extruding of a spinneret plate, cooling, oiling, secondary stretching, primary heat setting and winding. A molecular chain of modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, a fluorinated dibasic acid chain segment, a dibasic alcohol chain segment with a trimethyl silicon side group and a dibasic acid chain segment with a tertiary butyl side group. The ultra-bright polyester moderately-strong filament has the dye-uptake of 88.3-93.2% at the temperature of 125 DEG C and has the K / S value of 23.65-25.78, the fastness to soaping reaches the fifth grade, the dry friction fastness reaches the fifth grade, and the wet friction fastness is higher than the fourth grade; the intrinsic viscosity of the ultra-bright polyester moderately-strong filament is reduced by 15-20% after the filament is placed for 60 months at the temperature of 25 DEG C and the relative humidity of 65%. The method is simple in process, and the prepared polyester moderately-strong filament is good in degradability and dyeing performance.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a super bright polyester medium-strength yarn and a preparation method thereof. Background technique [0002] Polyester is the trade name of polyester fiber in my country, and it is an important variety in synthetic fibers. It is a fiber-forming high polymer prepared from purified terephthalic acid (PAT) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reactions— Polyethylene terephthalate (PET), a fiber made by spinning and post-processing. With the expansion of polyester production scale, the production technology has also been greatly improved. From the initial production of conventional products, it gradually develops towards the production of high-tech, functional and differentiated fibers. The application fields of polyester fibers It has also gradually developed from the initial cl...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01D5/253C08G63/695C08G63/682
Inventor 王山水王丽丽熊克
Owner JIANGSU HENGLI CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com