Non-aqueous-medium dyeing and washing-free color fixation method for reactive dye

A reactive dye and non-aqueous medium technology, applied in the field of textile dyeing and finishing, can solve the problems of low fixation rate, waste of resources, large amount of surfactant co-surfactant, etc. The effect of reducing water consumption and avoiding hydrolysis reactions

Inactive Publication Date: 2016-06-22
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 auxiliary agents will also cause difficulties in post-processing, high COD values ​​in soaping wastewater, environmental pollution, and a certain waste of resources; Clothing has high affinity, so the dyeing speed is fast, it is not easy to control, and it is easy to dye flowers; 3. When dyeing, loose fibers, yarns, fabrics or garments must first be padded with a certain concentration of sodium carbonate aqueous solution, and with a certain liquid rate. Dyeing, the water in the system will also cause the hydrolysis of the dye, therefore, its color fixation rate is low
[0008] The recent research on non-aqueous solvent dyeing of reactive dyes has made great pro...

Method used

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  • Non-aqueous-medium dyeing and washing-free color fixation method for reactive dye
  • Non-aqueous-medium dyeing and washing-free color fixation method for reactive dye
  • Non-aqueous-medium dyeing and washing-free color fixation method for reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a non-aqueous medium dyeing of reactive dyes and a method for water-free color fixing, which comprises the following steps:

[0045] Soak 10g of pure cotton knitted fabric in an aqueous sodium carbonate solution with a concentration of 10g / L to swell, then soak twice and roll twice to control the liquid retention rate to 100%, and bake at 60°C for 10min;

[0046] Put the knitted fabric pretreated by sodium carbonate aqueous solution in the dyeing cup, add 0.3g (3% o.m.f) AviteraRedSE dye, 50mL dimethyl sulfoxide, dye at 50°C, and slowly heat up at 1°C / min Raise the temperature, slowly add 300mL of tetrachlorethylene during the heating process, raise the temperature to 130°C and keep it for 2h;

[0047] The performance test result of the knitted fabric after dyeing and color fixation that table 1 embodiment 1 provides

[0048]

[0049] Take out the dyed cloth sample, dry and recover the solvent, and then evenly atomize 30g / L color fixing agen...

Embodiment 2

[0054] This embodiment provides a non-aqueous medium dyeing of reactive dyes and a method for water-free color fixing, which comprises the following steps:

[0055] Soak 10g of pure cotton knitted fabric in an aqueous sodium carbonate solution with a concentration of 10g / L to swell, then soak twice and roll twice to control the liquid retention rate to 100%, and bake at 60°C for 10min;

[0056] Put the knitted fabric pretreated by sodium carbonate aqueous solution in the dyeing cup, add 0.3g (3% o.m.f) AviteraRedSE dye, 50mL dimethyl sulfoxide, dye at 50°C, and slowly heat up at 1°C / min Raise the temperature, slowly add 300mL of tetrachlorethylene during the heating process, raise the temperature to 130°C and keep it for 2h;

[0057] Take out the dyed cloth sample, dry and recover the solvent, and then foam the working solution containing 60g / L color-fixing agent R-7800 and 10g / L foaming agent CAB through the foaming machine, the foam ratio is 10, and control the foam before a...

Embodiment 3

[0062] This embodiment provides a non-aqueous medium dyeing of reactive dyes and a method for water-free color fixing, which comprises the following steps:

[0063] Soak 10g of cotton / linen (60% cotton + 40% linen) blended knitting fabrics in a sodium carbonate solution with a concentration of 15g / L for 10 minutes at room temperature, dipping and rolling, control the liquid retention rate to 100%, and then dry , the drying temperature is 60°C, and the drying time is 10 minutes;

[0064] Put the knitted fabric pretreated by sodium carbonate solution in the dyeing cup, add 0.3g (3% o.m.f) AviteraRedSE dye, 50mL of N,N-dimethylacetamide, dye at 50°C, and dye at 1°C / min Slowly increase the temperature at a rate of 100%, slowly add 300mL of n-heptane during the heating process, and raise the temperature to 130°C for 2 hours;

[0065] The performance test result of the knitted fabric after dyeing and color fixation that table 3 embodiment 3 provides

[0066]

[0067] Take out t...

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Abstract

The invention provides a method for non-aqueous medium dyeing and water-free color fixing of reactive dyes. The method comprises: 1) placing the fabric or garment in an alkaline substance to swell, controlling the liquid retention rate, and drying; 2) mixing the fabric or garment with a reactive dye or a good solvent for the reactive dye and then heating up, and before heating up or Add a poor solvent for reactive dyes during the heating process, warm up to the dyeing temperature and carry out heat preservation dyeing, and dry the fabric or garment after dyeing; 3) Directly apply the color-fixing working solution evenly to the above drying The double side of the dried fabric or garment, control the liquid carrying rate of the fabric or garment, and then bake it to complete the non-aqueous medium dyeing of reactive dyes and water-free color fixation. The technical scheme provided by the invention greatly improves the utilization rate and dye uptake rate of reactive dyes, and effectively reduces water consumption and waste water discharge in the dyeing process.

Description

technical field [0001] The invention relates to a non-aqueous medium dyeing of reactive dyes and a method for water-free color fixing, which belongs to the technical field of textile dyeing and finishing. Background technique [0002] At present, the dyeing of reactive dyes is mainly carried out in water medium. However, because the active groups of reactive dyes are prone to hydrolysis in water medium, it not only leads to the waste of reactive dyes, but also consumes a lot of water and discharges a large amount of water in the subsequent process. The treated high-chroma sewage is also the bottleneck in the application of reactive dyes. [0003] In order to avoid the hydrolysis reaction of reactive dyes in aqueous media 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 dyeing with non-aqueous medium is that reactive dyes will not be hydrolyzed during...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P3/66D06P5/02
CPCD06P1/38D06P3/66D06P5/02
Inventor 张玉高周小明陈玉洪邱孝群
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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