Waterless dyeing method of dispersed dye

A disperse dye and anhydrous dyeing technology, which is applied in dyeing, textiles and papermaking, can solve the problems of large environmental pollution, high technical requirements, and high processing costs, and achieve the effect of solving pollution problems, simple formula, and easy separation

Inactive Publication Date: 2012-11-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the composition of printing and dyeing factory wastewater, the amount of disperse dye dyeing wastewater is relatively large, and it is relatively difficult to treat, and it is also relatively harmful to environmental pollution.
Although the existing wastewater treatment technology has a good treatment effect, the technical requirements are high, the investment is large, and the treatment cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Anhydrous exhaust dyeing

[0053] Disperse Scarlet HBGL 0.06g

[0054] 1-Butyl-3-methylimidazolium bromide ([Bmim]Br) 50g

[0055] Dye 2g of pure polyester fabric on a room temperature dyeing machine at 90°C for 1.5 hours (first raise the temperature to 60°C at a rate of 3°C / min, then raise the temperature to 90°C at 1°C / min, keep it warm for 1.5 hours), cool down to 30°C, After 20 minutes, 7g of ethanol was added to wash the cloth. After filtration and vacuum distillation, the ionic liquid and disperse dye were separated, and the ionic liquid and disperse dye were recovered. The color of the dyed sample was uniform and bright red.

Embodiment 2

[0057] Anhydrous hot melt pad dyeing

[0058] Disperse Scarlet HBGL 0.5g

[0059] 1-Butyl-3-methylimidazolium bromide ([Bmim]Br) 50g

[0060] Pad dyeing solution of 5g of pure polyester fabric (two dipping and two padding), liquid retention rate 70% → 90°C pre-baking for 15 minutes → high temperature baking and color fixing (215°C, 3min), cool down to 30°C, fabric out, after 20min Add 50g of water to wash, filter and distill under reduced pressure, separate the ionic liquid and the disperse dye, recover the ionic liquid and the disperse dye, and the dyed sample is evenly red in color.

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PUM

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Abstract

The invention relates to a waterless dyeing method of dispersed dye, comprising: (1) taking an ionic liquid as a solvent where the dispersed dye is dissolved; (2) dyeing dacron according to an ionic liquid impregnating method and an ionic liquid hot melt pad dyeing method; and (3) recycling the ionic liquid and the dye by an alcohol or water distillation circulation method. The dyeing method and a formula are simple, and the operation is convenient; during dye bath, since no dyeing auxiliaries such as a dispersing agent and a high temperature leveling agent are needed, the problems of dyeing waste water caused by the dyeing auxiliaries themselves and the toxicity of a carrier are solved; and in addition, the ionic liquid in the residual dyeing liquid and the dye can be recycled.

Description

technical field [0001] The invention belongs to the field of dyeing methods of disperse dyes, in particular to an anhydrous dyeing method of disperse dyes. Background technique [0002] Disperse dyes are the most important and main category in the dye industry. Disperse dyes have small molecules and no ionic water-soluble groups in their structure. They are uniformly dispersed in the dye solution with the help of dispersants for dyeing. Since disperse dyes are extremely difficult to dissolve in water, it is difficult to carry out by conventional methods. Therefore, a special dyeing method is required. The methods currently used include three dyeing methods: carrier method, high temperature and high pressure method and hot melt method. At the same time, additives are added to increase the diffusion rate of dye molecules, so that dye molecules can continuously diffuse into the puffed and enlarged fiber voids, and be fixed with fibers by intermolecular attraction and hydrogen ...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/90D06P3/54D06P5/02D06P5/04
Inventor 赵涛王明
Owner DONGHUA UNIV
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