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High-dye-uptake polyester fiber POY (partially oriented yarn) and preparation method thereof

A polyester fiber, dye uptake technology, applied in the direction of one-component copolyester rayon, dyeing method, fiber treatment, etc., can solve the problem of low energy consumption dye uptake

Active Publication Date: 2015-04-01
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy consumption and low dyeing rate brought by the high temperature and high pressure method are the main problems now.

Method used

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  • High-dye-uptake polyester fiber POY (partially oriented yarn) and preparation method thereof
  • High-dye-uptake polyester fiber POY (partially oriented yarn) and preparation method thereof
  • High-dye-uptake polyester fiber POY (partially oriented yarn) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A preparation method of high dye-uptake polyester fiber POY yarn, comprising the following steps:

[0074] (1) Preparation of amino fatty acid ethylene glycol ester:

[0075] 1) Add dodecanedicarboxylic acid and methanol into the reactor at a molar ratio of 1:1.5, heat to 80°C under the catalysis of concentrated sulfuric acid, reflux for esterification, cool, separate and purify to obtain dodecanedicarboxylic acid Acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of dodecane dicarboxylic acid;

[0076] 2) Dissolve the monomethyl dodecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the monomethyl dodecanedicarboxylate concentration is 0.05mol / L , under a nitrogen atmosphere, react at 80 ° C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric acid to react for 2 hours, then wash,...

Embodiment 2

[0098] A preparation method of high dye-uptake polyester fiber POY yarn, comprising the following steps:

[0099] (1) Preparation of amino fatty acid ethylene glycol ester:

[0100] 1) Add pentacodecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 110°C, reflux for esterification, cool, separate and purify to obtain pentacodecane Dicarboxylic acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentacosane dicarboxylic acid;

[0101] 2) The monomethyl pentacodecanedicarboxylate, lead tetraacetate and lithium bromide are dissolved in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentacodecanedicarboxylate is 0.07mol / L, under nitrogen atmosphere, react at 85°C, reflux, when no more gas is generated, add a certain amount of dilute sulfuric acid to rea...

Embodiment 3

[0123] A preparation method of high dye-uptake polyester fiber POY yarn, comprising the following steps:

[0124] (1) Preparation of amino fatty acid ethylene glycol ester:

[0125] 1) Add pentadecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 85°C, reflux for esterification, cool, separate and purify to obtain pentadecanedicarboxylic acid acid monomethyl ester; described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentadecanedicarboxylic acid;

[0126] 2) Dissolve the monomethyl pentadecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentadecanedicarboxylate is 0.08mol / L , under nitrogen atmosphere, react at 90°C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric acid to react for 2.5 h...

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Abstract

The invention relates to a high-dye-uptake polyester fiber POY (partially oriented yarn) and a preparation method thereof. The material of the high-dye-uptake polyester fiber POY is modified polyester; the modified polyester is prepared from polyester and amino fatty acid glycol ester, the amino fatty acid glycol ester is dispersed among molecular chains of the polyester, and the molecular chains of the amino fatty acid glycol ester and the polyester have hydrogen-bonding interaction, so that the elative positions of the molecular chains of the amino fatty acid glycol ester and the polyester are fixed. According to the high-dye-uptake polyester fiber POY, the free volume of each of intervals among fiber internal molecular chains is increased by 20-30 v / v% at 90-130 DEG C; due to the addition of the fatty acid ester, the free volume of the polyester is increased so as to increase the dispersion degree of dye and improve the dying performance of the polyester. The high-dye-uptake polyester fiber POY can be applied to garment materials, bedding articles, decorative items and the like.

Description

technical field [0001] The invention belongs to the technical field of modified fibers, and relates to a high-dye-uptake polyester fiber POY yarn and a preparation method thereof. Background technique [0002] Since its appearance, polyethylene terephthalate (PET) fiber has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fibers in the world. Polyester fiber has a series of excellent properties such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric has the advantages of wrinkle resistance and good stiffness, so , Polyester fibers are widely used in clothing, home textiles and other fields. [0003] PET is a symmetrical linear macromolecule, the molecular chain does not contain side chain groups, and its regularity is very good. Its main chain contains a rigid b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84C08G63/685C08G63/183C08G63/78C07C227/18C07C229/08D06P1/16D06P3/54D01D5/08D01D5/088
Inventor 尹立新魏德新晏金龙王力军熊克杨超明
Owner JIANGSU HENGLI CHEM FIBER
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