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Disperse black dye mixture with high washing fastness

A dye mixture, washing fastness technology, used in organic dyes, dyeing methods, textiles and papermaking, etc., can solve the problems of poor washing fastness, can not meet the requirements of printing and dyeing industry for fastness, affect fastness and other problems, achieve good fastness. The effect of washing fastness

Inactive Publication Date: 2018-12-04
JIANGSU ZHIJIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the dyeing process of dyes, there is always a small amount of dyes that fail to enter the interior of the fabric and can only be adsorbed on the surface. The dyes on the surface are called floating colors. These dyes seriously affect the washing fastness of the fabric. If the treatment is not clean, other fabrics will be stained in the subsequent washing process, that is, the washing fastness is poor. On the other hand, even if the dye enters the inside of the dye, a small amount of dye will be pulled out and adsorbed on the fabric under the action of detergent and temperature. surface, thus affecting the fastness
[0004] 3. Disperse black dyes in the market are mixed with brown 19, red 311 and blue 284. The trade name is disperse black XF, and the dosage is relatively large. In the process of alkali washing, it is easy to form -CH2CH2COO negative ions and wash away. Blue 284 has no soluble groups after alkali washing, so the washing fastness of disperse black XF is less than 4 grades, which cannot meet the fastness requirements of the printing and dyeing industry.

Method used

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  • Disperse black dye mixture with high washing fastness
  • Disperse black dye mixture with high washing fastness
  • Disperse black dye mixture with high washing fastness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put 17g of Disperse Blue (Ⅰ-1), 15g of Disperse Violet (II-1), 25g of Disperse Orange (Ⅲ-1), 20g of auxiliary agent MF, 23g of sodium lignosulfonate 85A, 200g of water, sand them together, and then spray Dry to obtain the disperse black dye mixture of the present invention.

Embodiment 2-18

[0042] Make embodiment 2-18 respectively, and preparation method is identical with embodiment 1, and specific ratio is as follows table 1:

[0043] The concrete proportioning of table 1 embodiment 2-18

[0044]

[0045]

Embodiment 19

[0047] Take Examples 1-18, and the commercially available Disperse Black XF as a control example, each take 1g, disperse in 500ml of water, after mixing, take 20ml of the dispersion and 80ml of water, adjust the pH to 4-5 with acetic acid, add 2g of polyester The dyeing of microfiber fabrics is carried out according to the national standard GB / T2394-2006, the washing fastness is tested according to GB / T3921-2008, and the color uptake is carried out according to GB / T9337-2001.

[0048] Table 2 is the test result (unit: grade) of the washing fastness dye uptake rate of embodiment 1-18

[0049]

[0050]

[0051] It can be seen from the above table that the disperse black of the present invention is used for dyeing polyester or its blended fabrics with excellent washing fastness, and the color uptake rate is also greatly improved, which is higher than that of the comparative example.

[0052] principle

[0053] The dyeing process of dyes can be regarded as the process of diss...

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Abstract

The invention provides a disperse black dye mixture with high washing fastness, and specifically relates to the technical field of dye mixtures. The disperse black dye mixture is composed of disperseblue, disperse purple, disperse orange, and additives. The disperse blue, the disperse purple, and the disperse orange are represented by the formula (I), the formula (II), and the formula (III) respectively. Due to the existence of electron-withdrawing nitro groups of m-chlorine of azo groups of the dyes represented by the formula (I) and the formula (II), sodium phenolate is easily formed underan alkaline condition during the alkali washing process (dyeing post-treatment), water soluble dye is formed on the fabric surface; the dye represented by the formula (III) can form sodium phenolate and is capable of coupling an acetate group, -CH2COO negative ions are formed by an alkali treatment, and good washing fastness is obtained.

Description

technical field [0001] The invention belongs to the technical field of dye mixtures, in particular to a disperse black dye mixture with high washing fastness. Background technique [0002] 1. With the development of polyester fiber, superfine fiber has appeared. Because of its extremely fine diameter and large surface area, its fabric has high coverage, soft hand feeling, and comfortable wearing. It has become a textile fabric at home and abroad. Among the textile raw materials that enterprises are vying to use, most of the dyes currently used have poor color fastness, especially the washing fastness does not reach level 4. [0003] 2. There are two aspects that affect the washing fastness of disperse dyes, one is the cleaning of dyed floating colors, and the other is the migration of dyes to the surface. During the dyeing process of dyes, there is always a small amount of dyes that fail to enter the interior of the fabric and can only be adsorbed on the surface. The dyes o...

Claims

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Application Information

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IPC IPC(8): C09B67/36C09B67/22D06P1/18D06P3/54
CPCC09B67/0051C09B67/0079D06P1/18D06P3/54
Inventor 陈勤伟
Owner JIANGSU ZHIJIANG CHEM