Hydrophilic polyester and preparation method thereof

A water polyester and hydrophilic technology, applied in the field of polymers, can solve the problems of easy yellowing of hydrophilic polyester, large viscosity drop, etc., achieve good product quality stability, low production energy consumption, and shorten high temperature residence time Effect

Active Publication Date: 2018-05-04
CHINA TEXTILE ACADEMYTIANJINSCI & TECH DEV CO LTD +1
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses non-toxic and environment-friendly titanium metal alkoxide as a catalyst, and under the synergistic effect of end-capping agent polyhydroxy compound, stabilizer phos

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
  • Hydrophilic polyester and preparation method thereof
  • Hydrophilic polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1

[0047] The hydrophilic polyester is prepared according to the preparation method provided by the present invention, and the steps are as follows:

[0048] (1) Prepare a slurry of terephthalic acid and ethylene glycol in a molar ratio of 1:1.15;

[0049] (2) The slurry prepared in step (1) is continuously added to the esterification system consisting of a vertical first esterification tank and a vertical second esterification tank for esterification reaction. The reaction temperature of the first esterification tank is The reaction temperature is 260°C, the reaction pressure is 500kPa, the reaction temperature of the second esterification tank is 265°C, and the reaction pressure is 120kPa. When the degree of polymerization of the ethylene terephthalate oligomer reaches 5, the oligomer is continuously and stably extracted from the esterification kettle through the oligomer pump;

[0050] (3) The ethylene terephthalate oligomer prepared in step (2) is adjusted to 235°...

Example Embodiment

[0053] Example 2

[0054] The hydrophilic polyester is prepared according to the preparation method provided by the present invention, and the steps are as follows:

[0055] (1) Prepare a slurry with terephthalic acid and ethylene glycol in a molar ratio of 1:1.05;

[0056] (2) The slurry prepared in step (1) is continuously added to the esterification system consisting of a vertical first esterification tank and a vertical second esterification tank for esterification reaction. The reaction temperature of the first esterification tank is The reaction temperature is 275°C, the reaction pressure is 400kPa, the reaction temperature of the second esterification tank is 275°C, and the reaction pressure is 200kPa. When the degree of polymerization of ethylene terephthalate oligomer reaches 8, the oligomer is continuously and stably extracted from the esterification kettle through the oligomer pump;

[0057] (3) The ethylene terephthalate oligomer prepared in step (2) is adjusted to 250°C ...

Example Embodiment

[0060] Example 3

[0061] The hydrophilic polyester is prepared according to the preparation method provided by the present invention, and the steps are as follows:

[0062] (1) Prepare a slurry of terephthalic acid and ethylene glycol in a molar ratio of 1:2.0;

[0063] (2) The slurry prepared in step (1) is continuously added to the esterification system composed of a vertical esterification kettle for esterification reaction. The reaction temperature of the esterification kettle is 240°C and the reaction pressure is 100kPa. When the degree of polymerization of the ethylene glycol dicarboxylate oligomer reaches 1, the oligomer is continuously and stably extracted from the esterification kettle through the oligomer pump;

[0064] (3) The ethylene terephthalate oligomer prepared in step (2) is adjusted to 200°C through a heat exchanger with polyethylene glycol with a molecular weight of 200 and glycerol / phosphorous acid added online Triphenyl ester / N,N'-bis-(3-(3,5-di-tert-butyl-4-hy...

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of macromolecules, and particularly discloses hydrophilic polyester and a preparation method thereof. The hydrophilic polyester is prepared by polymerizingethylene glycol terephthalate oligomer and polyether glycol under the synergistic action of titanium alcohol salt, polyhydroxy compound, phosphorus compound, sterically hindered phenol compound and acetate. The hydrophilic polyester has the characteristics that the catalyzing function of titanium alcohol salt to side reaction is inhibited by the multiple stabilizer system; the easiness in yellowing is avoided, and the reduction of intrinsic viscosity in the forming process is little; the green and environment-friendly effects are realized, any heavy metal pollution is avoided, the color phaseis excellent, and the spinnability and heat stability are good.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a hydrophilic polyester and a preparation method thereof. Background technique [0002] Polyester fiber has the advantages of high breaking strength, stable shape, good crispness, anti-wrinkle and non-ironing, easy to wash and dry, and is an ideal textile fiber. However, due to the high regularity of polyester molecular chains, the lack of hygroscopic groups such as hydroxyl groups and amino groups, there are only ester groups with low polarity; these structural characteristics not only endow polyester fibers with excellent mechanical properties, but also give polyester fibers It has brought disadvantages such as low hygroscopicity and wet feeling when wearing the fabric, which greatly reduces its wearing comfort. Therefore, improving the hydrophilic properties of polyester fibers and improving the moisture permeability of their fabrics is one of the important directions in the...

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): C08G63/668C08G63/85C08K5/527C08K5/20C08K5/098C08K5/13C08K5/526C08K5/134
CPCC08G63/668C08G63/85C08K5/098C08K5/13C08K5/1345C08K5/20C08K5/526C08K5/527
Inventor 邱志成钟淑芳李志勇金剑刘玉来杨喆陈伟
Owner CHINA TEXTILE ACADEMYTIANJINSCI & TECH DEV CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap