Cationic dyed polyester composite differential dyed yarn and preparation method thereof

A technology for dyeing silk and cationic polyester, which is applied in the field of cationic polyester composite dyed silk and its preparation, which can solve the problems of poor dyeing quality and high dyeing temperature of dyeable polyester, and achieve improved dyeing performance, lower dyeing temperature, and large space effect of size

Active Publication Date: 2019-05-14
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of poor dyeing quality and high dyeing temperature of cationic dyeable polyester in the prior art, and provide a method to reduce the dyeing temperature of ca

Method used

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  • Cationic dyed polyester composite differential dyed yarn and preparation method thereof
  • Cationic dyed polyester composite differential dyed yarn and preparation method thereof
  • Cationic dyed polyester composite differential dyed yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation method of cathodic composite dyed yarn, the specific steps are as follows:

[0051] (1) Prepare modified CDP;

[0052] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 10% hydrogen peroxide solution, reacted at 72°C for 3 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:2.0:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0053] (1.2) Esterification reaction;

[0054] Terephthalic acid, ethylene glycol, sodium ethylene glycol isophthalate sulfonate and 2,2,3,4,5,5-hexamethyl-3 in a molar ratio of 1:1.2:0.020:0.03 ,4-Hexanediol is made into a slurry, after adding antimony trioxide, titanium dioxide and triphenyl phosphate ...

Embodiment 2

[0070] The preparation method of cathodic composite dyed yarn, the specific steps are as follows:

[0071] (1) Prepare modified CDP;

[0072] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 11% hydrogen peroxide solution, reacted at 70°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.8:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0073] (1.2) Esterification reaction;

[0074] Terephthalic acid, ethylene glycol, sodium ethylene glycol isophthalate sulfonate and 2,2,3,4,5,5-hexamethyl-3 in a molar ratio of 1:1.4:0.017:0.02 ,4-Hexanediol is made into a slurry, after adding ethylene glycol antimony, titanium dioxide and triphenyl pho...

Embodiment 3

[0083] The preparation method of cathodic composite dyed yarn, the specific steps are as follows:

[0084] (1) Prepare modified CDP;

[0085] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 12% hydrogen peroxide solution, reacted at 74°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.6:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0086] (1.2) Esterification reaction;

[0087] Terephthalic acid, ethylene glycol, sodium ethylene glycol isophthalate sulfonate and 2,2,3,4,5,5-hexamethyl-3 in a molar ratio of 1:2.0:0.014:0.02 ,4-Hexanediol is made into a slurry, after adding antimony acetate, titanium dioxide and trimethyl phosphate a...

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Abstract

The invention relates to cationic dyed polyester composite differential dyed yarn and a preparation method thereof. The preparation method comprises the steps that terephthalic acid, ethanediol, isophthalic acid gylcol ester sodium sulfonate and 2,2,3,4,5,5-hexamethyl-3,4-heptandiol are evenly mixed, then an esterification reaction and a polycondensation reaction are conducted successively to prepare modified cationic dyed polyester (CDP), then polyester pre-oriented yarn (POY) and modified CDP POY are prepared from a polyester melt and a modified CDP melt correspondingly according to a POY process, finally, the POY and the modified CDP POY are doubled and then processed according to a DTY process, and thus the cationic dyed polyester composite differential dyed yarn is prepared. The dye-uptake of the cationic dyed polyester composite differential dyed yarn at the temperature of 125 DEG C is 89.7-94.3%, the soaping-resistant color fastness reaches the fifth level, the dry friction fastness reaches the fourth level, and the wet friction fastness reaches the fourth level. The preparation method of the cationic dyed polyester composite differential dyed yarn is simple in process and low in cost; and a prepared product is excellent in dyeing performance, various in pattern, attractive and good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, and relates to a cationic polyester composite dyed 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 made from terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification Or the fiber-forming high polymer prepared by transesterification and polycondensation reaction - polyethylene terephthalate (PET), and then the fiber made by spinning and post-processing. With the continuous improvement of human living standards, the fields of clothing and decoration have put forward higher requirements for the quality of fibers. In order to meet people's ever-increasing needs, it is urgent to develop differentiated products with high added value. [0003] Since polyester is a hydrophobic fiber, its molecules do not cont...

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
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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/86C08G63/688D01D5/08
Inventor 范红卫王山水汤方明
Owner JIANGSU HENGLI CHEM FIBER
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