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Non-aqueous solvent cold pad batch dyeing method of reactive dye

A technology of cold pad-batch dyeing and reactive dyes, which is applied in the non-aqueous solvent cold pad-batch dyeing of reactive dyes and the dyeing field of reactive dyes, and can solve the problems of high COD value of soaping wastewater, waste of resources, and fast dyeing speed of dyes, etc. , to achieve the effect of improving the dyeing rate and color fixing rate and saving the amount of use

Active Publication Date: 2017-03-22
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reverse micellar dyeing process has the following problems: 1. The amount of surfactant and co-surfactant in the system is relatively large, and the amount of a large amount of surfactant and auxiliary agent will cause a large amount of surface adsorption on the cloth sample during the dyeing process. Active agents and additives will also cause post-processing difficulties, high COD value of soaping wastewater, environmental pollution and waste of resources
2. Due to the high affinity of the high-concentration dye aqueous solution dispersed in the solvent system to the fiber, the dyeing speed is fast, it is not easy to control, and it is easy to dye flowers.
3. When dyeing, the fiber first needs to be padded with a certain concentration of sodium carbonate aqueous solution, and dyed with a certain liquid rate. The water in the system will also cause the hydrolysis of the dye, so its color fixation rate is low.
However, this method requires a bath ratio of 1: (15-50) (the bath ratio is the mass g of the fiber: the volume mL of the solvent), and it needs to be incubated at 90-130°C for 1-3h to fix the color, and the total solvent usage is relatively large. Large, large energy consumption in the production process, resulting in high economic costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Present embodiment provides a kind of non-aqueous solvent cold pad-batch dyeing method of reactive dye, it comprises the following steps:

[0053] (1) Put 10g pure cotton woven fabric in 20g / L Na 2 CO 3 Two immersions and two rollings in the lye to make the liquid-carrying rate 100%, and then bake at 65°C for 5 minutes and dry.

[0054] (2) the pure cotton woven cloth that has been rolled over alkali is dipped twice in dyeing liquor and rolled twice, makes the rate of carrying liquid 60%, dyeing liquor formula: the HF Yellow 3R dyestuff of 10g / L (produced by Sumitomo Chemical Co., Ltd.) , the solvent is N,N-dimethylformamide.

[0055] (3) Arrange the pure cotton woven fabric that has passed through the dyeing solution in a sealed environment at room temperature for 40 hours. Among them, a beaker is used to fill the acetone next to the cotton cloth (there is always liquid acetone in the beaker), and placed in the same sealed environment. Keep the whole environment und...

Embodiment 2

[0059] Present embodiment provides a kind of non-aqueous solvent cold pad-batch dyeing method of reactive dye, it comprises the following steps:

[0060] (1) Put 10g pure cotton woven cloth in 15g / L Na 2 CO 3 and 5g / L NaOH mixed with lye for two dips and two rolls to make the liquid-carrying rate 100%, and then bake at 65°C for 5min and dry.

[0061] (2) The pure cotton woven cloth that has been rolled over alkali is soaked twice in dyeing solution, and the rate of carrying liquid is 60%. Dyeing solution formula: HF Yellow 3R dyestuff (produced by Sumitomo Chemical) of 10g / L, solvent Dimethyl sulfoxide:N,N-dimethylformamide=1:1.

[0062] (3) Bake the pure cotton woven fabric that has been soaked with the dye solution at 70° C. for 90-110 seconds, and the liquid-carrying rate after baking is 25%.

[0063] (4) Arrange the baked and fixed pure cotton woven fabrics in a sealed environment at room temperature for 40 hours, in which, a beaker is used to hold acetone next to the c...

Embodiment 3

[0067] Present embodiment provides a kind of non-aqueous solvent cold pad-batch dyeing method of reactive dye, it comprises the following steps:

[0068] (1) Arrange the pure cotton woven fabric in the solution of the cationic modifier, heat it up to 70°C and keep it warm for 60 minutes, take out the woven fabric, wash it, and dry it; the solution formula of the cationic modifier: 18g / L Cationic reagent A (cationic reagent A is DM-1903 cationic modifier, produced by Guangdong Demei Fine Chemical Co., Ltd.), 8g / L NaOH, and the solvent is water.

[0069] (2) 10g of pure cotton woven fabric through cationic modification in 20g / L Na 2 CO 3 Two immersions and two rollings in the lye to make the liquid retention rate 100%, then bake at 65°C for 5 minutes and dry.

[0070] (3) The modified pure cotton woven cloth that has been rolled over alkali is dipped twice in the dye liquor and rolled twice, and the liquid retention rate is 60%, and the dye liquor formula: HF Yellow 3R dyestuf...

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PUM

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Abstract

The invention provides a non-aqueous solvent cold pad batch dyeing method of reactive dye. The method comprises the steps of curing and drying the pad batch alkali liquor of the textile; pad dyeing the textile; yarding the pad dyed textile products in the saturated vapor atmosphere of reactive dye poor solvent; curing and drying the yarded textile products, and finishing the non-aqueous solvent cold pad batch dyeing of the reactive dye; or, conducting cationicm odification to the textile; curing and drying the pad batch alkali liquor of the textile; pad dyeing the textile; yarding the pad dyed textile products; curing and drying the yarded textile products; and finishing the non-aqueous solvent cold pad batch dyeing of the reactive dye. The method can achieve the salt free shade dyeing for the reactive dye, the dyeing fixation rate is high, the use amount of the organic solvent and water is low, the energy consumption is low, and the amount of discharged waste water is less.

Description

technical field [0001] The invention relates to a dyeing method of reactive dyes, in particular to a non-aqueous solvent cold pad-batch dyeing method of reactive dyes, belonging to the technical field of textile dyeing and finishing. Background technique [0002] At present, reactive dyes are mostly used in the dyeing of reactive fibers. During the dyeing process, due to the hydrolysis of the active groups in the water medium, not only a large amount of reactive dyes are wasted, but also a large amount of water is consumed during the dyeing process and a large amount of high Chroma sewage, which is also an insurmountable bottleneck for reactive dyes. [0003] In order to avoid the hydrolysis reaction of reactive dyes and improve the utilization rate of reactive dyes, scientists have paid attention to and studied the dyeing of reactive dyes in non-aqueous media very early. The advantage of using non-aqueous medium dyeing is that reactive dyes will not be hydrolyzed during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/00D06P3/66
CPCD06P1/0032D06P1/38D06P3/66
Inventor 张玉高周小明陈玉洪邱孝群
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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