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Dispersed black azo dye mixture

A technology of azo dyes and mixtures, which is applied in organic dyes, dyeing methods, textiles and papermaking, etc. It can solve the problems of not smooth surface, easy color difference, easy migration of dyes, etc., and achieve excellent light fastness and good color fastness High degree and good dyeing stability

Active Publication Date: 2013-12-25
HANGZHOU FLARIANT SPECIALTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unique characteristics of ultra-fine fibers, there are new problems in the printing and dyeing industry that ordinary fibers do not have, such as: the dyeing is not deep enough, it is easy to produce color difference, it is difficult to obtain uniform dyeing effect, and the dyeing fastness cannot meet the requirements, etc.
For example: microfiber has a large surface area, irregular cross-section, and the surface is not smooth enough, it is easy to be stained with dye, and it is difficult to clean
At the same time, due to the fineness of ultra-fine fibers and the high content of amorphous regions, when heated, especially when the fibers contain finishing agents that have affinity for dyes, the dyes are easy to migrate to the surface, reducing the wet fastness.

Method used

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  • Dispersed black azo dye mixture
  • Dispersed black azo dye mixture
  • Dispersed black azo dye mixture

Examples

Experimental program
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Effect test

preparation example Construction

[0042] The preparation method of dye A:

[0043] Sodium nitrite (6.9 g, 0.1 mol, 100 percent) was added to 15 mL of 96% concentrated sulfuric acid, stirred for 5 minutes, and left at 10-15 ° C for 1 hour to obtain a nitrosyl sulfuric acid solution for later use. The diazo component (19.5g, 0.1mol, folded) with the structure shown in (a) was dissolved in 15mL of concentrated sulfuric acid, and the above-mentioned nitrosylsulfuric acid was diazotized slowly at 0-5°C (ice bath), and the reaction After 1-1.5 hours, place it in an ice bath to obtain the diazonium salt for later use. Another coupling component (32.4 g, 0.1 mol, folded) with the structure shown in (b) was dissolved in 10 mL of glacial acetic acid. Slowly drop into the above-mentioned diazonium salt solution at 0-5°C, continue to stir for 10 minutes after the addition, let it stand still, and obtain 48.3g (100%) of the green light blue dye with the structure shown in (I-1) by suction filtration , and the molar yield...

Embodiment 1

[0047] 22 grams of component A of formula (I-1), 23 grams of component B of formula (II-2), 16 grams of component C of formula (III-1), and 27 grams of component of formula (IV-3) Part D, 12 grams of component E of formula (V-1), 90 grams of naphthalenesulfonic acid formaldehyde condensate (dispersant NNO), blended with water, ground and dispersed with a grinder, and spray-dried to obtain a commercial dye. The dye can provide a deep black color with excellent fastness properties to the fabric.

Embodiment 2

[0049] 31 grams of component A of formula (I-1), 21 grams of component B of formula (II-1), 19 grams of component C of formula (III-5), and 18 grams of component of formula (IV-3) Part D, 11 grams of component E of formula (V-2), 100 grams of methylnaphthalenesulfonic acid formaldehyde condensate (dispersant MF), after adding water and blending, grinding and dispersing with a grinder, and spray drying to obtain commercial dyes . The dye can provide a deep black color with excellent fastness properties to the fabric.

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Abstract

The invention relates to a dispersed black azo dye mixture which is characterized by comprising five kinds of structural dyes: A, B, C, D and E, the structure formulas of the five kinds of dyes are respectively represented as a formula (I), a formula (II), a formula (III), a formula (IV) and a formula (V), wherein R1 is hydrogen, methyl or ethyl; R2 is methyl, ethyl, propyl or n-butyl; R3 is one or two substituted nitro, halogen, cyano-group, COOC2H4OC2H4OCH3 and the like; R4 is methyl, ethyl, propyl or n-butyl; R5 and R6 are the same or different and are each nitro, cyano-group or halogen; R7 is methyl, ethyl, propyl or n-butyl; n is a natural number of 1-3; R9 is methoxyl or oxethyl; R10 is methyl, ethyl, propyl, n-butyl, CH2CH2CH2OCH3 or CH2CH2CH2OCH(CH3)2; R11 and R12 each are nitro, halogen or cyano-group; R13 is methoxyl or oxethyl; R14 is methyl, ethyl, propyl or n-butyl; and n is a natural number of 1-3.

Description

technical field [0001] The invention relates to disperse dyes in the field of fine chemicals, in particular to disperse black dye mixtures for superfine fibers. Background technique [0002] In recent years, microfiber textiles have attracted worldwide attention for their good touch and characteristics. It has the fullness, softness, light weight, easy storage, stable size, good drapability, and good weather resistance of natural fibers. It has advantages, and has texture and function that natural fibers do not have. It is a high value-added fiber. Microfiber has the characteristics of small fineness, large specific surface, fast adsorption of dyes and large adsorption capacity. When dyeing with disperse dyes, especially for the dyeing of superfine fibers with composite disperse dyes, higher requirements are placed on the compatibility between the various monochromatic dyes used for compounding. Due to the unique characteristics of ultrafine fibers, new problems that ordin...

Claims

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Application Information

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IPC IPC(8): C09B67/22C09B67/38D06P1/18D06P3/54
Inventor 李百春陈望全
Owner HANGZHOU FLARIANT SPECIALTY