Anhydrous zero-discharge disperse dye dyeing method

A technology of disperse dyes and dyeing methods, which is applied in the field of disperse dye dyeing, can solve the problems of unrealized large-scale industrial application and low dye uptake rate, and is beneficial to printing and dyeing processing, emission reduction, product quality improvement, and dyeing bath recycling Simple and easy-to-operate effects

Inactive Publication Date: 2014-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previously, more studies were carried out on solvent dyeing in trichlorethylene and tetrachlorethylene, but due to the high solubility of disperse dyes in solvents, the dye uptake rate is low, and the h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 0.3g of C.I. Disperse Red 153 in 90mL of n-hexane solvent, sonicate or heat to obtain a uniform dye solution. Put 6g of polyester plain weave fabric (150D, 80g / m 2 ) into the dye solution, heated up and maintained at 130°C for 2 hours. After the dyeing bath is cooled, take out the fabric, wash the fabric with n-hexane and acetone or a mixture of the two at the same time until the last washing solution is colorless, and the combined washing solution is evaporated and concentrated to recover the dye. The washed fabrics were left to dry at room temperature. Add the dye to the dyeing residue to the initial concentration of the dye, and repeat the above dyeing steps. The K / S value of the dyed fabric can reach 15, the washing fastness of the dyed fabric is 4-5, the dry rubbing fastness is 4-5, and the wet rubbing fastness is 4-5. The K / S value of the fabric after secondary dyeing can be Up to 15, the rubbing fastness and washing fastness are the same as one-time d...

Embodiment 2

[0024] Dissolve 0.5g of C.I. Disperse Blue 56 in 100mL of liquid paraffin, sonicate or heat to obtain a uniform dye solution. Polybutylene terephthalate plain weave fabric 6g (130D, 85g / m 2 ) into the dye solution, heated up and maintained at 120°C for 3 hours. After the dyeing bath is cooled, take out the fabric, wash the fabric with n-hexane and acetone or a mixture of the two at the same time until the last washing solution is colorless, and the combined washing solution is evaporated and concentrated to recover the dye. The washed fabrics were left to dry at room temperature. Add the dye to the dyeing residue to the initial concentration of the dye, and repeat the above dyeing steps. The K / S value of the dyed fabric can reach 16, the washing fastness of the dyed fabric is 4-5, the dry rubbing fastness is 4-5, and the wet rubbing fastness is 4-5. The K / S value of the fabric after secondary dyeing can be Up to 16, the rubbing fastness and washing fastness are the same as ...

Embodiment 3

[0026] Dissolve 1.0g of C.I. Disperse Blue 60 in 100mL of methyl silicone oil, sonicate or heat to obtain a uniform dye solution. Polytrimethylene terephthalate plain weave fabric 6g (140D, 80g / m 2 ) into the dye solution, heated up and maintained at 110°C for 3 hours. After the dyeing bath is cooled, take out the fabric, wash the fabric with n-hexane and acetone or a mixture of the two at the same time until the last washing solution is colorless, and the combined washing solution is evaporated and concentrated to recover the dye. The washed fabrics were left to dry at room temperature. Add the dye to the dyeing residue to the initial concentration of the dye, and repeat the above dyeing steps. The K / S value of the dyed fabric can reach 20, the washing fastness of the dyed fabric is 4-5, the dry rubbing fastness is 4-5, and the wet rubbing fastness is 4-5. The K / S value of the fabric after secondary dyeing can be Up to 20, the rubbing fastness and washing fastness are the ...

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PUM

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Abstract

The invention relates to an anhydrous zero-discharge disperse dye dyeing method, comprising the following steps: adding a disperse dye to an organic solvent, and dissolving to obtain a dye bath; immersing synthetic fiber fabric into the dye bath to dye, wherein the dyeing temperature is 80-150 DEG C and the dyeing time is 0.5-8 hours; cleaning and drying to obtain dyed fabric. An organic solvent is utilized to replace water as dyeing medium, so that use of a dispersant is reduced, dyeing raffinate and cleanout fluid can be recycled by simple treatment, printing and dyeing to reduce emission are facilitated, the problem of a low polymer can be effectively solved by adopting the anhydrous zero-discharge disperse dye dyeing method, and the product quality is improved.

Description

technical field [0001] The invention belongs to the field of fabric dyeing methods, in particular to a water-free and zero-emission disperse dyeing method. Background technique [0002] Disperse dyes have been around since the beginning of the 20th century, mainly for dyeing acetate fibers. Later, with the rapid development of synthetic fibers, disperse dyes gradually became one of the fastest-growing dyes. At present, it is mainly used for dyeing and printing of synthetic fibers such as polyester fibers. Chemical fiber textile products dyed with disperse dyes have bright color, excellent washing fastness and wide application. During the dyeing process of polyester fiber fabrics, oligomers in polyester tend to aggregate and crystallize on the fiber surface, causing dyeing defects. In addition, with the increasingly severe ecological and environmental problems, the problem of wastewater caused by disperse dyes has become more and more prominent. The large amount of dispers...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/92D06P3/54
Inventor 许素新陈建刚王碧佳
Owner DONGHUA UNIV
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