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High-dye-uptake-rate polyester fiber and preparation method thereof

A polyester fiber, dye uptake technology, applied in the direction of fiber chemical characteristics, single-component polyester rayon, rayon manufacturing, etc. Effect

Active Publication Date: 2015-04-22
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-rate polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] A preparation method of high dye-uptake polyester fiber, comprising the following steps:

[0077] (1) Preparation of amino fatty acid ethylene glycol ester:

[0078] 1) Add dodecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 80°C, 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;

[0079] 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, purify ...

Embodiment 2

[0100] A preparation method of high dye-uptake polyester fiber, comprising the following steps:

[0101] (1) Preparation of amino fatty acid ethylene glycol ester:

[0102] 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;

[0103] 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 react for 3 ...

Embodiment 3

[0125] A preparation method of high dye-uptake polyester fiber, comprising the following steps:

[0126] (1) Preparation of amino fatty acid ethylene glycol ester:

[0127] 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;

[0128] 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 hours, the...

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Abstract

The invention relates to high-dye-uptake-rate polyester fiber and a preparation method thereof. The high-dye-uptake-rate polyester fiber is made from modified polyester. The modified polyester is prepared by polyester and amido fatty acid gylcol ester, wherein the amido fatty acid gylcol ester is dispersed among molecular chains of the polyester to produce mutual hydrogen-bond interaction, so that the relative positions of the amido fatty acid gylcol ester and the molecular chains of the polyester are fixed. The free volume spaces among the molecular chains inside the high-dye-uptake-rate polyester fiber is increased by 20-30v / v% under the condition of temperature of 90-130 DEG C. The high-dye-uptake-rate polyester fiber has higher dye uptake rate compared with common fiber under the situation that the same dyes including disperse red 3B, disperse blue SE2R, disperse bright blue S-GL and the like are adopted, and the dyeing cost is reduced. The high-dye-uptake-rate polyester fiber can be used for c garment materials, bedding articles, decoration articles 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 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, corrosion resistance, etc. Therefore, 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 benzene ring and a flexible hydrocarbon group, and the ester group directly co...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78
Inventor 张富伟李文刚刘文斌明丹刘志立
Owner JIANGSU HENGLI CHEM FIBER
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