Composite active black dye and application thereof

Abstract

The invention discloses a composite active black dye and application thereof. The composite active black dye comprises four specific components in the formula (I), the formula (II), the formula (III)and the formula (IV), wherein M in the components independently include H or Na or K or Li. The invention further discloses application of the composite active black dye in dyeing of a chinlon interwoven fabric and chinlon-cotton interwoven fabric products. The composite active black dye can independently dye the chinlon-cotton interwoven fabric products, does not need to be matched with other types of dyes for dyeing and can simultaneously dye chinlon cotton in the same bath, the coloring synchronism is consistent, dyeing steps are reduced, and the consumption of salt and alkali during dyeingis reduced. The formulas are shown in the description.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing, in particular to reactive dyes for nylon cotton, in particular to a composite reactive black dye and its application. Background technique [0002] With the improvement of living standards, consumers have further requirements for the comfort and functionality of clothing fabrics. Among them, pure cotton fabrics are favored by consumers for their strong hygroscopicity, good heat preservation, excellent heat resistance, and high comfort. However, pure cotton fabrics still have shortcomings such as easy to wrinkle, easy to shrink, easy to change, and not acid-resistant, which limits their application. At present, the development of nylon-cotton interwoven fabrics is very popular in the market. Its advantages are: luster Bright, full-feeling, comfortable to wear, cool and breathable, good elasticity, anti-wrinkle and wear-resistant, and good drape, it is the first choice for high-end clothi...

AI Technical Summary

Problems solved by technology

[0003] The first one is the two-bath dyeing method, that is, nylon is dyed with neutral, acid dyes or disperse dyes. After dyeing, the foot water is drained and then cotton is dyed with medium-temperature reactive dyes. The advantage of this method of dyeing is that nylon and cotton fibers Color (shade, depth) can complement each other in the overdyeing process, and the color of the cloth surface is easier to adjust and control, but its disadvantages exist such as long process time, low processing output, large energy consumption, large sewage discharge, poor economic benefits, etc. ;

[0004] The second method is to dye brocade with neutral dye at 85°C, then lower the temperature to 60°C, add alkali to fix the color, dye cotton with reactive dye, and then wash and wash. However, this method still has obvious shortcomings, specifically neutral dye at 85°C When dyeing, the maximum dyeing temperature of nylon cannot reach 95°C-98°C, the coloring is incomplete, the fastness is poor, and the medium-temperature reactive dyes stain the nylon heavily at a higher temperature, the shade reproducibility is poor, and it is difficult to adjust the color

[0005] Therefore, when dyeing nylon-cotton interwoven fabrics with the current reactive dyes, other types of dyes must be used, and nylon and cotton must be dyed in separate steps, resulting in cumbersome and time-consuming process steps and large sewage discharge, which is not conducive to energy saving, environmental protection, and environmental protection. Reduce production cost; Those skilled in the art urgently need to seek a kind of reactive dye that can simultaneously dye polyamide cotton in the same bath

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