Non-aqueous solvent dyeing method of washing-free reactive dye

A reactive dye and non-aqueous solvent technology, applied in the dyeing of reactive dyes and non-aqueous solvent dyeing of reactive dyes with no water, can solve the problems of low fixation rate of reactive dyes, easy dyeing, and fast dyeing speed.

Active Publication Date: 2015-07-01
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
[0007] Although there have been a large number of literature reports on non-aqueous solvent dyeing of reactive dyes, the fixation rate of reactive dyes is still low, and a large amount of water is still needed to wash away the residual floating on cotton loose fibers, yarns, fabrics or garments after dyeing. color, which also loses the true meaning of non-aqueous solvent dyeing

Method used

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  • Non-aqueous solvent dyeing method of washing-free reactive dye
  • Non-aqueous solvent dyeing method of washing-free reactive dye
  • Non-aqueous solvent dyeing method of washing-free reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The present embodiment provides a kind of method for non-aqueous solvent dyeing of non-water-washing reactive dyes, and it comprises the following steps:

[0032] 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;

[0033] Put the knitted fabric pretreated with sodium carbonate aqueous solution in the dyeing cup, add 0.3g (3% o.m.f) Avitera Red SE dye, 50mL dimethyl sulfoxide, dye at 50°C, and heat up at 1°C / min Slowly raise the temperature, slowly add 300mL of tetrachlorethylene during the heating process, raise the temperature to 130°C and keep it for 2h;

[0034] Take out the dyed cloth sample, place it in 50mL tetrachlorethylene solution of octadecyltrimethylammonium bromide with a concentration of 1g / L, keep it warm at 40°C for 30min, take it out, dry it, and complete the dyeing.

[0035] Two g...

Embodiment 2

[0039] The present embodiment provides a kind of method for non-aqueous solvent dyeing of non-water-washing reactive dyes, and it comprises the following steps:

[0040] 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;

[0041] Put the knitted fabric pretreated by sodium carbonate solution in the dyeing cup, add 0.3g (3% o.m.f) Avitera Orange SE dye, 50mL of N,N-dimethylacetamide, dye at 50°C, and dye at 1°C Slowly raise the temperature at a heating rate of / min, slowly add 300mL of n-heptane during the heating process, and raise the temperature to 130°C for 2 hours;

[0042] Take out the dyed cloth sample, place it in 50 mL of 1 g / L dimethyl dioctadecyl ammonium chloride solution in tetrahydrofuran, keep it war...

Embodiment 3

[0047] The present embodiment provides a kind of method for non-aqueous solvent dyeing of non-water-washing reactive dyes, and it comprises the following steps:

[0048] Soak 10g of cotton / nylon (70% cotton + 30% nylon) blended knitting arrangement in a sodium bicarbonate solution with a concentration of 20g / L for 10 minutes at room temperature, dipping and rolling, control the liquid retention rate to 100%, and then dry Drying, the drying temperature is 60°C, and the drying time is 10 minutes.

[0049] Put the knitted fabric pretreated by sodium bicarbonate solution in the dyeing cup, add 0.3g (3% o.m.f) Avitera Blue SE dye, 50mL of N,N-dimethylformamide, dye at 50°C, and dye at 1 The heating rate of ℃ / min was raised slowly, and 300mL of n-hexane was slowly added during the heating process, and the temperature was raised to 130°C for 2 hours;

[0050] Take out the dyed cloth sample, place it in 40mL of acetone solution of 1g / L didodecyldimethylammonium bromide, keep it warm ...

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Abstract

The invention provides a non-aqueous solvent dyeing method of a washing-free reactive dye. The non-aqueous solvent dyeing method comprises the following steps: 1. carrying out full swelling on loose fibers, yarns, fabric or garments in a water solution of alkaline substances, controlling the take-up rate and drying; 2. mixing the dried loose fibers, yarns, fabric or garments with a reactive dye and a good solvent of the reactive dye to form a mixing system, heating the mixing system, adding a poor solvent of the reactive dye to the mixing system before heating or in the heating process, heating to dyeing temperature and then carrying out heat preservation; and 3. carrying out heat preservation on the loose fibers, yarns, fabric or garments treated in the step 2 in the non-polar or weak-polar poor solvent of the reactive dye containing a cation reagent, drying and thus finishing dyeing. According to the method, the loose fibers, yarns, fabric or garments can be completely dyed or subjected to fixation by the reactive dye, and do not need to be washed and neutralized after being dyed, so that the dyeing cycle is short and the energy consumption is low.

Description

technical field [0001] The invention relates to a dyeing method of reactive dyes, in particular to a non-aqueous solvent dyeing method of no-washing reactive dyes, and belongs to the technical field of textile dyeing and finishing. Background technique [0002] At present, reactive dyes are mostly used in the dyeing of reactive loose fibers, yarns, fabrics or garments. During the dyeing process, due to the hydrolysis of active groups in aqueous media, not only a large amount of reactive dyes are wasted, but also in the dyeing process. Consuming a large amount of water and discharging a large amount of high-color sewage that is difficult to treat are also the bottlenecks that have always existed 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 dyeing with non-aqueou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/92D06P3/85D06P5/06D06B3/02
Inventor 张玉高邓勇邱孝群
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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