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Compound type black acid dye

A technology of acid dyes and neutral dyes, applied in the field of printing and dyeing, can solve the problems of poor chromatographic breadth, increase product production cost, take a long time, etc., achieve better saturation and performance, improve product quality, and solve the problem of poor reproducibility Effect

Inactive Publication Date: 2013-04-10
HENGSHENG CHEM QIDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Acid azo dyes generally contain soluble groups such as sulfonic acid groups, carboxyl groups, and hydroxyl groups. They are soluble in water and are mostly dyed in acidic media. However, the wet treatment fastness of acid azo dyes is low, and the dyed and finished products need to be dyed many times. Cleaning can improve its fastness. In addition to taking a lot of time, it also produces a lot of waste water, which increases the production cost of the product
[0005] Compared with ordinary acid dyes, acid black dyes have poor dyeing uniformity and accumulation effect, and the color performance is insufficient when it is suitable for cellulose fibers, natural wool fibers, and synthetic polyester fibers.
[0006] At the same time, black dyes generally have the problems of poor chromatographic breadth and low dyeing reproducibility

Method used

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  • Compound type black acid dye
  • Compound type black acid dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation of embodiment 1 composite type black acid dye

[0037] According to the data of each component in Table 1, compounds A, B, C and appropriate amount of additives were added to water and mixed evenly, and then spray-dried to prepare dyes 1-9.

[0038] Table 1

[0039]

[0040] The above mixing method is for compound A with different cations and adding different proportions of gray tone compound B and yellow compound C. According to the needs of different customers, the color tone after dyeing is adjusted, taking into account the product application performance and the economic benefits of product compounding. A group of black acid dyes with high dyeing strength, good fastness and good color expression can be obtained.

Embodiment 2

[0041] Embodiment 2 Performance testing of products 1 to 9

[0042] Detection method:

[0043] Take 0.5g of the original powder of compound A of the formula (1) and 0.5g each of the dyes 1 to 9 obtained in Example 1, and make solutions with a concentration of 0.5g / 500ml with water, draw 20ml and mix with 180ml of water, and then put Add 2g of nylon 66, add 5ml of 5% sodium sulfate and 5ml of weak acid buffer, heat up to 95°C for 1 hour, cool down to 50°C, take out the fabric, rinse it with clean water, put it in a 60°C oven for drying, Obtain comparative example product, and the printing and dyeing product of dyestuff 1~9 of the present invention.

[0044] Test the color tone, water washing fastness, rubbing fastness and level dyeing of the comparative products and products 1~9 respectively, according to the specific AATCC test standards, and the test results are shown in the following table:

[0045] Table 2

[0046]

[0047] The above test data show that the compounded...

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Abstract

The invention relates to the field of printing and dyeing, and particularly relates to an acid dye, more particularly relates to a black acid dye. The invention aims to provide a compound type black acid dye which is formed by compounding a weak acid dye and an acid dye containing active groups so as to obtain excellent synchronism and levelling property as well as high wet color fastness during dyeing. The compound type black acid dye disclosed by the invention comprises a 1:2 asymmetric green light black metal complexation type neutral dye A, a 1:2 symmetric red light black metal complexation type dye B and a yellow acid dye C containing a cyanuric chloride active group. The compound type black acid dye disclosed by the invention not only effectively solves the problem of bad levelling property and bad reproducibility in traditional black dyeing but also achieves brighter coloring and better color saturation and expressivity, and simultaneously increases the quality of the product obtained.

Description

technical field [0001] The invention relates to the field of printing and dyeing, in particular to an acid dye, more specifically to a black acid dye. [0002] Background technique [0003] Azo dyes are dyes containing one or more azo-based chromophores, and azo dyeing is a technology that directly generates water-insoluble azo dyes on or in fibers. [0004] Acid azo dyes generally contain soluble groups such as sulfonic acid groups, carboxyl groups, and hydroxyl groups. They are soluble in water and are mostly dyed in acidic media. However, the wet treatment fastness of acid azo dyes is low, and the dyed and finished products need to be dyed many times. Only by cleaning can the fastness be improved, which not only takes a lot of time, but also produces a large amount of waste water, which increases the production cost of the product. [0005] Compared with ordinary acid dyes, acid black dyes have poor dyeing uniformity and accumulation effect, and the color performance is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/24D06P1/39
Inventor 邢国璋刘丰杰张为洪刘世刚
Owner HENGSHENG CHEM QIDONG
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