Reactive dye non-aqueous medium dyeing and soaping method

A technology of reactive dyes and non-aqueous medium, applied in the field of dyeing and soaping of reactive dyes, can solve the problems of difficult handling, large amount of surfactant co-surfactant, environmental pollution, etc.

Inactive Publication Date: 2015-11-18
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following problems in the reverse micellar dyeing process: (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 causes a large amount of adsorption on the cloth sample during the dyeing process. Surfactants and additives will also cause post-processing difficulties, high COD values ​​of soaping wastewater, environmental pollution and a certain waste of resources; (2), due to the high affinity of the high-concentration dye aqueous solution dispersed in the solvent system to the fiber , so the dyeing speed is fast, it is not easy to

Method used

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  • Reactive dye non-aqueous medium dyeing and soaping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The non-aqueous medium dyeing and soaping method of the reactive dye that the present embodiment provides, it comprises the following steps:

[0056] Soak 10g of pure cotton knitted fabric in 10g / L aqueous solution of sodium carbonate to 100% liquid retention rate, double dipping and rolling, and dry at 60°C for 10 minutes;

[0057] Put the alkali-pretreated knitted fabric in the dyeing cup, add 0.3g (3% o.m.f) of reactive dyes listed in Table 2, 50mL of dimethyl sulfoxide, dye at 35°C, and dye at 1°C / min Slowly increase the temperature at a rate of 100%, slowly add 300mL of tetrachlorethylene during the heating process, and raise the temperature to 130°C for 2 hours;

[0058] Take out the dyed cloth sample, place it in 50ml didodecyl dimethyl ammonium bromide tetrachlorethylene / ethanol solution (concentration is 5g / L, tetrachlorethylene: ethanol is 1:5), its bath ratio 1:5. Insulate at 60°C for 20 minutes, take it out, and dry it. The knitted fabric dyed with the ga...

Embodiment 2

[0062] The non-aqueous medium dyeing and soaping method of the reactive dye that the present embodiment provides, it comprises the following steps:

[0063] Soak 10g of cotton / nylon (70% cotton + 30% nylon) blended knitting fabric in 10g / L sodium bicarbonate solution at room temperature for 10 minutes, dipping and rolling to control the liquid retention rate at 100%, and then dry it. The drying temperature is 60°C, and the drying time is 10 minutes.

[0064] Put the alkali-pretreated knitted fabric in the dyeing cup, add 0.3g (3% o.m.f) Avitera blue SE dye, 50mL of N,N-dimethylformamide, and dye at 35°C at 1°C / min Slowly increase the temperature at a rate of 100%, slowly add 300mL of n-hexane during the heating process, and raise the temperature to 130°C for 2 hours;

[0065] Take out the dyed cloth sample, place it in 30ml dioctadecyldimethylammonium chloride acetone solution (concentration: 2g / L), keep it warm at 60°C for 20min, take it out, dry it, and finish the dyeing. ...

Embodiment 3

[0069] The non-aqueous medium dyeing and soaping method of the reactive dye that the present embodiment provides, it comprises the following steps:

[0070] Immerse 10g of pure cotton yarn (36s / 2) in an aqueous solution of sodium carbonate with a concentration of 10g / L until the liquid-carrying rate is 100%, dipping and rolling twice, and drying at 60°C for 10 minutes;

[0071] Put the alkali-pretreated yarn in a dyeing cup, add 0.3g (3% o.m.f) Avitera red SE dye, 50mL of N,N-dimethylacetamide, and dye at 35°C at 1°C / min Slowly increase the temperature at a rate of 100%. During the heating process, slowly add 300mL of decamethylcyclopentasiloxane, and raise the temperature to 130°C for 2 hours;

[0072] Take out the dyed cloth sample, it is placed in the butyl acetate solution (40ml) of the dioctadecyl dimethyl ammonium chloride (being dioctadecyl dimethyl ammonium chloride) of 3g / L, at 60 Keep warm at ℃ for 20 minutes, take it out, and dry it to complete the dyeing. After d...

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Abstract

The invention provides a reactive dye non-aqueous medium dyeing and soaping method. The method includes the steps: placing fibers in an aqueous solution of an alkaline substance, swelling, and then drying; carrying out non-aqueous medium dyeing on the dried fibers with a reactive dye; and placing the fibers obtained after reactive dye dyeing in an organic solvent containing a cationic reagent, and soaping. The cationic reagent is a quaternary ammonium salt compound; the organic solvent can dissolve the reactive dye or can dissolve the reactive dye with the help of the cationic reagent; the concentration of the cationic reagent in the organic solvent is 0.1-10 g/L, and the soaping bath ratio is 1:(1-30). The method achieves complete dyeing of the fibers with the reactive dye and color fixation with superhigh color fixation rate, after completion of dyeing, unfixed floating colors are removed by an anhydrous soaping process, the whole dyeing and soaping process is needless to water consumption, short in cycle, low in energy consumption, and good in fastness property.

Description

technical field [0001] The invention relates to a dyeing and soaping 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 the dyeing process, which is expected to increase the degree of reaction bet...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P3/60D06P3/85D06P5/02
Inventor 张玉高邓勇邱孝群
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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