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Polyester fiber DTY (draw textured yarn) with high dyeing rate and preparation method thereof

A polyester fiber and dye uptake technology, applied in the direction of single-component polyester rayon filament, fiber processing, rayon manufacturing, etc., can solve the problems of affecting the feel of polyester fiber, poor production safety, dyeing in the same bath, etc. To achieve the effect of reducing migration, good compatibility and increasing compatibility

Active Publication Date: 2015-04-08
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyester fiber can only be dyed with disperse dyes at high temperature and high pressure, which not only consumes energy, but also has poor production safety, and also affects the feel of polyester fiber, and blended fabrics with other fibers cannot be dyed in the same bath at room temperature. Pressure dyeing becomes a problem that must be solved

Method used

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  • Polyester fiber DTY (draw textured yarn) with high dyeing rate and preparation method thereof
  • Polyester fiber DTY (draw textured yarn) with high dyeing rate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A kind of preparation method of high dye uptake polyester fiber DTY silk, comprises 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, the...

Embodiment 2

[0104] A kind of preparation method of high dye uptake polyester fiber DTY silk, comprises the following steps:

[0105] (1) Preparation of amino fatty acid ethylene glycol ester:

[0106] 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;

[0107] 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...

Embodiment 3

[0135] A kind of preparation method of high dye uptake polyester fiber DTY silk, comprises the following steps:

[0136] (1) Preparation of amino fatty acid ethylene glycol ester:

[0137] 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;

[0138] 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 fo...

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Abstract

The invention relates to a polyester fiber DTY (draw textured yarn) with high dyeing rate and a preparation method thereof. The polyester fiber polyester fiber DTY with high dyeing rate is made from modified polyester, the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fiber is increased by 20-30v / v% when the polyester fiber DTY with high dyeing rate is at 90-130 DEG C, the dying rate of the polyester fiber DTY with high dyeing rate is higher than that of the common fiber when the polyester fiber DTY with high dyeing rate adopts the same dyes such as disperse red 3B, disperse blue SE-2R, disperse bright blue S-GL and the like, less surface dyeing is formed after dyeing, and the polyester fiber DTY with high dyeing rate can be used for garment materials, bedding article decoration 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 DTY 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 fiber is widely used in clothing, industrial yarn 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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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/86D01D5/08D01D5/088D01D7/00
Inventor 张学东沈建根马文平李峰简维权孙晓华
Owner JIANGSU HENGLI CHEM FIBER
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