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

3 Cites 25 Cited by

AI-Extracted 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 ...

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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.

Application Domain

Dyeing process

Technology Topic

SolventToxicity +8

Examples

Experimental program(2)

Example Embodiment

[0051] Example 1

[0052] Anhydrous dip dyeing

[0053] Disperse Red HBGL 0.06g

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

[0055] 2g of pure polyester fabric was dyed at 90°C for 1.5 hours on a normal temperature dyeing machine (first heated to 60°C at a heating rate of 3°C/min, then heated to 90°C at 1°C/min, and kept for 1.5 hours), cooled to 30°C, After 20 minutes, 7g of ethanol was added to wash, and the ionic liquid and disperse dye were separated by filtration and vacuum distillation, and the ionic liquid and disperse dye were recovered. The dyed sample was uniformly bright red.

Example Embodiment

[0056] Example 2

[0057] Anhydrous hot melt pad dyeing

[0058] Disperse Red HBGL 0.5g

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

[0060] Put 5g of pure polyester fabric in pad dyeing solution (two dips and two pads), with a liquid rate of 70% → 90 ℃ pre-bake for 15 minutes → high temperature baking and fixation (215 ℃, 3 minutes), cool down to 30 ℃, out of the cloth, after 20 minutes Add 50g of water to wash, after filtration and vacuum distillation, the ionic liquid and the disperse dye are separated, and the ionic liquid and the disperse dye are recovered, and the dyed sample is uniformly red.

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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Description & Claims & Application Information

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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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Classification and recommendation of technical efficacy words

Avoid pollution
Easy to separate

Waterless dyeing method of dispersed dye

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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