Dyeing method of reactive dye with high color fixation rate

A technology of reactive dyes and dyeing methods, applied in the field of reactive dyeing with high fixation rate, can solve the problems of high equipment requirements, reduced wet rubbing fastness, decreased tear strength, etc., so as to reduce environmental pollution and improve dyeing rate. , the effect of improving utilization

Active Publication Date: 2016-12-07
ANHUI YAYUAN PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dyes with high directness and high fixation rate are not easy to be washed off after hydrolysis, which will affect the color fastness and uniformity of dyeing; dyeing under low-alkali or neutral conditions requires the development of new dyes or changes in the dyeing process, such as increasing temperature and Increase electrolyte concentration; cold-batch dyeing technology can increase the utilization rate of dyestuff by 10-15%, but the control requirements for the production process are strict, the controllability of shade is poor, and the residual sodium hydroxide can easily cause the fabric to feel hard and tear strength

Method used

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  • Dyeing method of reactive dye with high color fixation rate

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Embodiment 1

[0020] In the present embodiment, a kind of reactive dye dyeing method of high fixation rate comprises the steps:

[0021] S1, pretreatment, padding the fabric to be dyed in the finishing solution containing chitosan quaternary ammonium salt, two dipping and two padding, the temperature of the padding tank is 30 ° C, the excess rate is 100%, pre-baked at 80 ° C for 3 minutes , then baked at 110°C for 10min, washed in cold water, and dried at 60°C; wherein the finishing liquid containing chitosan quaternary ammonium salts includes: chitosan quaternary ammonium salt 5g / L, triethanolamine 5g / L, Polycarboxylic acid 0.5g / L, sodium hypophosphite 1g / L, the balance is water, wherein the preparation method of chitosan quaternary ammonium salt comprises: chitosan is added in isopropanol, adding content is 25wt% The sodium hydroxide solution was stirred evenly, then etherifying agent CTA was added, stirred and reacted in a water bath at 60°C for 2 hours, added hydrochloric acid to adjust...

Embodiment 2

[0025] In the present embodiment, a kind of reactive dye dyeing method of high fixation rate comprises the steps:

[0026]S1, pretreatment, padding the fabric to be dyed in the finishing solution containing chitosan quaternary ammonium salt, two dipping and two padding, the temperature of the padding tank is 50 ° C, the excess rate is 90%, pre-baked at 100 ° C for 1 min , and then baked at 130°C for 5 minutes, washed in cold water, and dried at 80°C; wherein the finishing liquid containing chitosan quaternary ammonium salt includes: chitosan quaternary ammonium salt 15g / L, N-methyldiethanolamine 1g / L, polycarboxylic acid 2g / L, sodium hypophosphite 0.1g / L, and the balance is water, wherein the preparation method of chitosan quaternary ammonium salt comprises: adding chitosan in isopropanol, adding The sodium hydroxide solution with a content of 35wt% was stirred evenly, then etherification agent CTA was added, stirred and reacted in a water bath at 40° C. for 4 hours, and hydro...

Embodiment 3

[0030] In the present embodiment, a kind of reactive dye dyeing method of high fixation rate comprises the steps:

[0031] S1, pretreatment, padding the fabric to be dyed in the finishing solution containing chitosan quaternary ammonium salt, two dipping and two padding, the temperature of the padding tank is 40°C, the excess rate is 95%, pre-baked at 90°C for 2min , then baked at 120°C for 7 minutes, washed in cold water, and dried at 70°C; wherein the finishing liquid containing chitosan quaternary ammonium salts includes: chitosan quaternary ammonium salts 10g / L, organic amine compounds 3g / L L, polycarboxylic acid 1g / L, sodium hypophosphite 0.5g / L, surplus are water, wherein the preparation method of chitosan quaternary ammonium salt comprises: chitosan is added in isopropanol, adding content is 30wt% sodium hydroxide solution was stirred evenly, then etherification agent CTA was added, stirred and reacted in a water bath at 50° C. for 3 hours, hydrochloric acid was added t...

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Abstract

The invention discloses a dyeing method of a reactive dye with a high color fixation rate. The dyeing method comprises the following steps: S1, pretreatment: padding a texture to be dyed in a finishing solution containing chitosan quaternary ammonium salt, dipping for two times, rolling for two times, prebaking at the temperature of 80 to 100DEG C, baking at the temperature of 110 to 130DEG C, washing with cold water and then drying; S2, reactive dyeing: immersing into a dyeing solution of the reactive dye, dyeing at the temperature of 20 to 30DEG C, raising the temperature to be 50 to 70DEG C, then adding an organic solvent B, and raising the temperature to be 80 to 100DEG C; adding sodium carbonate according to the volume of the dyeing solution of the reactive dye, insulating heat and reducing to room temperature; S3, performing after treatment, water washing, soaping, water washing and drying in air. The dyeing method of the reactive dye with the high color fixation rate, provided by the invention, has the advantages of high color fixation rate and good level-dyeing property; in addition, the process is simple, and industrial implementation is easily realized; meanwhile, chemical substances with high price and greater toxicity are prevented from being used.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a reactive dye dyeing method with high color fixation rate. Background technique [0002] Reactive dyes are named because the dye molecules contain reactive groups that react with fibers, and can also be called reactive dyes. Reactive dyes are the most important type of dyes for cellulose fiber dyeing due to their bright color, complete chromatogram, and excellent wet fastness. However, the dyeing fixation rate of reactive dyes is low, and the utilization rate of dyes is not high, especially for deep dyeing. When the dye concentration is greater than 3% o.w.f.), the color fixation rate of the dye is generally around 50-80%, that is to say, 20-50% of the reactive dye does not react with the fiber and is wasted. Waste increases the cost, and it is difficult to treat the discharged high-color wastewater, which is not conducive to environmental protection. [0003] In recent years, ...

Claims

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Application Information

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IPC IPC(8): D06P1/44D06P1/48D06P1/642D06P1/653D06P1/673D06P1/38D06P5/10C08B37/08
CPCC08B37/003D06P1/38D06P1/445D06P1/48D06P1/642D06P1/653D06P1/6735D06P5/10
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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