Anhydrous acid dye liquor preparation method based on acid eutectic solvent

A low eutectic solvent and acid dye technology, applied in dyeing, textile and paper making, etc., can solve the problems of simple molecular structure, lack of, environmental pollution, etc., and achieve the effect of wide source of raw materials, saving dyeing water and less environmental harm

Pending Publication Date: 2022-04-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acid dyes have the characteristics of many types, complete chromatograms, and bright colors, but their molecular structure is simple, lacking a long conjugated system, and the coplanarity or linearity of the molecular aromatic rings is not strong. Dyeing of fibers other than for the dyeing of cellulose fibers
At present, in the dyeing process of wool fabric, water is still used as the dyeing bath, resulting in a large amount of waste water, which has potential pollution to the environment
Yet, the preparation method of anhydrous acid dye solution is also seldom reported

Method used

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  • Anhydrous acid dye liquor preparation method based on acid eutectic solvent
  • Anhydrous acid dye liquor preparation method based on acid eutectic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a kind of dye solution

[0028] Mix 130g of choline and 90g of oxalic acid, heat it at 80°C until it becomes a solution, and then obtain the deep eutectic solvent of choline oxalic acid; add 40mg of acidic prayan red B to 50g of the obtained deep eutectic solvent of choline oxalic acid , stir evenly to obtain a dye solution.

Embodiment 2

[0029] Embodiment 2: a kind of dye solution

[0030] Mix 118g of betaine and 192g of citric acid and heat at 100°C until it becomes a solution to obtain a betaine citric acid deep eutectic solvent; add 20 mg of acid indigo dye to 100 g of the obtained betaine citric acid deep eutectic solvent , stir evenly to obtain a dye solution.

Embodiment 3

[0031] Embodiment 3: a kind of dye solution

[0032] Mix 117g of choline chloride and 192g of citric acid, and heat at 90°C until it becomes a solution to obtain a deep eutectic solvent of choline citrate; add 10mg of neutral red dye to 100g of choline citrate low In the eutectic solvent, stir evenly to obtain the dye liquor.

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Abstract

The invention discloses a preparation method of anhydrous acid dye liquor based on an acid eutectic solvent and application of the anhydrous acid dye liquor in wool fabric dyeing, and belongs to the field of wool fabric dyeing and finishing. According to the method, carboxylic acid and quaternary ammonium salt are used as raw materials, and the quaternary ammonium salt carboxylic acid acidic eutectic solvent anhydrous dyeing medium is prepared through a one-step method. The dyeing medium not only provides a dyeing solvent, but also contains positive ions and acid radicals, so that the generation of dyeing wastewater is avoided, and the addition of acid, alkali, surfactants and other auxiliaries in the dyeing process is also avoided. When the acid dye is used in the dyeing process of the wool fabric, the problems of high water consumption and large energy consumption are solved while the excellent dyeing effect is ensured.

Description

technical field [0001] The invention relates to a method for preparing anhydrous acid dye liquor based on an acidic deep eutectic solvent, belonging to the field of fabric dyeing and finishing. Background technique [0002] Acid dyes usually exist in the form of sulfonates. Since they need to be dyed under acidic conditions in the early stages of development, such dyes are customarily called acid dyes. Acid dyes have the characteristics of many types, complete chromatograms, and bright colors, but their molecular structure is simple, lacking a long conjugated system, and the coplanarity or linearity of the molecular aromatic rings is not strong. The dyeing of fibers is not used for the dyeing of cellulose fibers. At present, water is still used as the dyeing bath in the dyeing process of woolen fabrics, resulting in a large amount of waste water, which has potential pollution to the environment. However, the preparation method of anhydrous acid dye solution is rarely repor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/92D06P1/39D06P3/16
Inventor 王强姜哲周曼余圆圆王平
Owner JIANGNAN UNIV
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