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Cotton fiber dye for supercritical CO2 fluid dyeing and dyeing method thereof

A dyeing method and supercritical technology, applied in the field of dyes, can solve the problems of increasing the complexity of the dyeing process and increasing the production cost, and achieve the effects of excellent adsorption and dyeing characteristics, simple process and broad application prospects.

Inactive Publication Date: 2017-03-01
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at fiber expansion, dye diffusion and the use of alkaline agent to promote color fixation reaction which are easy to realize in conventional water bath in supercritical CO 2 It is difficult to realize in fluid. At the same time, in actual production, it is often necessary to pretreat hydrophilic natural fiber textiles with various solvents or other wetting and swelling agents, fiber modifiers, etc., to help fiber swelling and improve dye retention. Dyeing, or ammonification modification of fibers to increase the fixation rate of dyes on fibers, which increases the complexity of the dyeing process and raises the production cost. A simple dyeing process for super Critical CO 2 Fluid-dyed cotton fiber dye and dyeing method thereof

Method used

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  • Cotton fiber dye for supercritical CO2 fluid dyeing and dyeing method thereof
  • Cotton fiber dye for supercritical CO2 fluid dyeing and dyeing method thereof
  • Cotton fiber dye for supercritical CO2 fluid dyeing and dyeing method thereof

Examples

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preparation example Construction

[0040] The synthetic method of this cotton fiber dyestuff comprises the following steps:

[0041] Step 1, using cyanuric chloride (TCT) as the active group, and putting the dye matrix and the active group into a single or mixed solvent to completely dissolve it, thereby obtaining a reaction system;

[0042] Step 2, placing the reaction system in an ice bath at 0°C to 5°C, and then adding cyanuric chloride solution and an acid scavenger dropwise to the reaction system until the condensation reaction of the reaction system ends;

[0043] Step 3, diluting the reaction system after the condensation reaction, washing, filtering and drying to obtain the cotton fiber dye.

[0044] In the above synthesis method, the dye matrix can be 1,4-diaminoanthraquinone, disperse orange 3 or disperse blue 35. When the dye parent is 1,4-diaminoanthraquinone, the cotton fiber dye is red, which is recorded as reactive disperse red SCF-R1; when the dye parent is disperse orange 3, the cotton fiber d...

no. 1 example

[0056] This embodiment provides a kind of synthetic method of yellow cotton fiber dye.

[0057] Specifically, refer to figure 1 , figure 1 It is the synthetic route of yellow cotton fiber dye, and it can be seen that the present embodiment adopts Disperse Orange 3 and cyanuric chloride as raw materials, so that a Cl on the cyanuric chloride replaces a H on the amino group of Disperse Orange 3, thereby synthesizing Produces yellow cotton fiber dye.

[0058] refer to figure 2 , figure 2 show figure 1 Process flow diagram of the yellow cotton fiber dye shown.

[0059] The synthetic method of yellow cotton fiber dyestuff comprises:

[0060] Step 1, using disperse orange 3 as the dye matrix, and putting the dye matrix into a mixed solvent of dioxane and water to completely dissolve it, thereby obtaining a reaction system;

[0061] In the mixed solvent of dioxane and water, the mass ratio of 1,4-dioxane to distilled water is 2:1 or 1:(1~3);

[0062] Further, Disperse Orang...

no. 2 example

[0080] This embodiment provides a kind of synthetic method of blue cotton fiber dye.

[0081] Specifically, refer to Figure 8 , Figure 8 For the synthetic route of blue cotton fiber dye, it can be seen that the present embodiment adopts disperse blue 35 and cyanuric chloride as raw materials, so that a Cl on cyanuric chloride replaces a H on the hydroxyl group of disperse blue 35, thereby Crafts blue cotton fiber dye.

[0082] refer to Figure 9 , Figure 9 show Figure 8 The process flow chart of blue cotton fiber dyeing is shown.

[0083] The synthetic method of blue cotton fiber dyestuff comprises:

[0084] Step 1. Use disperse blue 35 as the dye matrix, and put the dye matrix into a mixed solvent of tetrahydrofuran and water to completely dissolve it, thereby obtaining a reaction system;

[0085]In the mixed solvent of tetrahydrofuran and water, the mass ratio of tetrahydrofuran and distilled water is 3:1;

[0086] Further, disperse blue 35 adopts 0.001mol; here,...

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Abstract

The invention brings forward a cotton fiber dye for supercritical CO2 fluid dyeing and a dyeing method thereof. the dyeing method comprises the following steps: S1, providing a dyeing system which contains a dye kettle and a dyeing kettle which are communicated with each other; S2, dissolving the cotton fiber dye in a fluid modifier, pouring the cotton fiber dye and the fluid modifier into the dye kettle, and closing the dye kettle; putting fabric into the dyeing kettle, and closing the dyeing kettle; and S3, injecting liquid carbon dioxide into the dyeing system, heating the dyeing system and supercharging, converting liquid carbon dioxide into a supercritical CO2 fluid, and dissolving the cotton fiber dye with the supercritical CO2 fluid; and letting the supercritical CO2 fluid be circulated in the dye kettle and the dyeing kettle so as to finish the dyeing. The cotton fiber dye of the invention has excellent adsorption dyeing properties. In addition, the synthetic method of the cotton fiber dye has simple technological process.

Description

technical field [0001] The invention relates to the field of dyes, in particular to a method for supercritical CO 2 Fluid dyed cotton fiber dyes and dyeing method thereof. Background technique [0002] Supercritical CO 2 Fluid is a green and environment-friendly fluid medium, which replaces the traditional water bath for dyeing and processing fiber textiles. It has the characteristics of environmental protection and clean production, as well as outstanding energy-saving and consumption-reducing effects. The current situation of large amount of sewage discharge and serious environmental pollution is of great significance. [0003] At present, most studies on dyeing polyester and other synthetic fibers with disperse dyes have been carried out, and some of them have been industrialized. But currently in supercritical CO 2 The direct use of disperse dyes in the fluid to dye natural fibers such as hydrophilic cotton, wool and silk cannot meet the commercial requirements. Amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/94D06P1/38D06P1/44D06P3/66C09B62/085
CPCC09B62/085D06P1/38D06P1/44D06P1/94D06P3/66Y02P20/54
Inventor 莫崧鹰李世豪陈永敏尚颂民龙家杰冉瑞龙
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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