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Sulfur dye mixed dyeing composition and dyeing process

A technology of sulfur dyes and compositions, applied in dyeing methods, textiles and papermaking, etc., can solve the problems of highly polluting dyeing wastewater, great harm to human body, changes in color and tone, etc., to achieve less dependence, good color fastness to rubbing, The effect of less staining

Inactive Publication Date: 2020-06-16
韶关市北纺智造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the dyeing of denim fabrics is limited to dyeing with indigo dyes, or overdyeing with indigo dyes and sulfur dyes or dyeing in the same bath, but the above-mentioned denim fabrics dyed with indigo dyes containing indigo dyes will have the following problems or defects: (1) The indigo dyeing process is complicated, and there are many factors that affect the dyeing performance, and a slight change in conditions will cause changes in color and tone; (2) The color fastness of indigo dyeing to dry and wet rubbing is poor, and it is difficult to achieve children's wear with conventional indigo dyeing. (3) It is difficult for plant indigo to meet the needs of industrial production. At present, most indigo comes from chemical synthesis, and a small amount of aniline by-products will be produced during the production process and cannot be removed, which is harmful to the human body. ; (4) Influenced by the nature of indigo dye, it will consume a lot of water and energy, and will produce highly polluting dyeing wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A sulfur dye mixed dyeing composition, according to the mass concentration of the base liquid, comprises the following components:

[0038] Diresul Smart denim blue 100 g / L;

[0039] Diresul Blue Black RDT-2B 20g / L;

[0040] Glucose 12g / L;

[0041] Diffusion agent NF 2.0 g / L;

[0042] M oil 3.0 g / L;

[0043] Sodium hydroxide 6.0 g / L;

[0044] Wherein, the sulfur blue Diresul Smart denim blue and the sulfur blue black Diresul Blue Black RDT-2B in the above-mentioned sulfur dye mixed dyeing composition are included, and the dyeing process includes the following steps:

[0045] (1) Yarn pretreatment: In the mercerizing tank, the concentration of sodium hydroxide in the mercerizing tank is 100 g / L, the temperature of the mercerizing tank is 45 °C, and the speed is 30 m / min. The thread tension is controlled at 2 Kg, the padding tension is controlled at 5 Kg, the excess mercerizing liquid on the yarn is removed, and then padding and rinsing are combined at a speed of 30 ...

Embodiment 2

[0055] A sulfur dye mixed dyeing composition, according to the mass concentration of the base liquid, comprises the following components:

[0056] Diresul Smart denim blue 100 g / L;

[0057] Diresul Blue Black RDT-2B 40g / L;

[0058] Glucose 12 g / L;

[0059] Diffusion agent NF 2.0 g / L;

[0060] M oil 3.0 g / L;

[0061] Sodium hydroxide 6.0 g / L;

[0062] Others are the same as embodiment 1. The performance index data of the prepared denim fabric are shown in Table 1.

Embodiment 3

[0064] A sulfur dye mixed dyeing composition, according to the mass concentration of the base liquid, comprises the following components:

[0065] Diresul Smart denim blue 120g / L;

[0066] Diresul Blue Black RDT-2B 30g / L;

[0067] Glucose 12 g / L;

[0068] Diffusion agent NF 2.0 g / L;

[0069] M oil 3.0 g / L;

[0070] Sodium hydroxide 6.0 g / L;

[0071] Others are the same as embodiment 1. The performance index data of the prepared denim fabric are shown in Table 1.

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Abstract

The invention discloses a sulfur dye mixed dyeing composition. The sulfur dye mixed dyeing composition comprises the following components based on base solution mass concentration of 80-120g / L of sulfur blue and 20-40g / L of sulfur blue black. Through mixed dyeing of sulfur blue and sulfur blue black with specific concentration compound ratio, and then through compounding with a reducing agent anda surfactant at certain concentration, next, and adopting an alkali solution or a pH regulator to regulate the pH value of the dye, the prepared jean fabric has an indigo blue dyeing color effect, isfree of aniline by-product and is safe and environment friendly; and the dry and wet friction color fastness of the jean fabric is higher and the fabric bottom staining is less under the same dyeing depth.

Description

technical field [0001] The invention relates to the technical field of fabric dyeing technology, in particular to a sulfur dye mixed dyeing composition and a dyeing technology. Background technique [0002] The final color of denim fabric products is determined by two aspects: dyeing and washing, and the dyeing stage is the most important determining factor. Indigo dyes and sulfur dyes are the most common dyes for warp dyeing of denim fabrics. Due to the status of indigo dyes in the field of denim dyeing, people usually regard indigo as the main color of denim fabrics, and other colors are regarded as variegated colors. [0003] Indigo dyes and sulfur dyes are insoluble in water, so in the actual dyeing process, indigo dyes and sulfur dyes need to be reduced to water-soluble leucosomes by strong reducing agents under alkaline conditions, and leucosomes are dyed onto the fiber and then oxidized to water insoluble indigo or sulfur dyes to complete the dyeing. The difference ...

Claims

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Application Information

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IPC IPC(8): D06P1/30D06P1/62D06P1/651D06P3/60
CPCD06P1/30D06P3/6025D06P1/65118D06P1/625
Inventor 顾翔陈桂春秦玉娟李瑞鹏李锦冠
Owner 韶关市北纺智造科技有限公司
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