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Yellow-orange reactive dye and method for dyeing cotton fiber in non-aqueous medium

A non-aqueous medium, reactive dye technology, applied in reactive dyes, dyeing methods, organic dyes, etc., can solve problems such as unsuitable cotton fiber dyeing

Active Publication Date: 2022-07-08
EAST CHINA UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change of the dyeing process makes the existing reactive dyes unsuitable for dyeing cotton fibers in non-aqueous media

Method used

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  • Yellow-orange reactive dye and method for dyeing cotton fiber in non-aqueous medium
  • Yellow-orange reactive dye and method for dyeing cotton fiber in non-aqueous medium
  • Yellow-orange reactive dye and method for dyeing cotton fiber in non-aqueous medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) preparation of compound shown in formula II:

[0041]

[0042] (9.2 g, 0.05 mol) cyanuric chloride (provided by Zhejiang Longsheng Dyestuff Chemical Co., Ltd., 98%) was dispersed in 100 mL of emulsifier TX-100 (triton: octyl phenyl polyoxyethylene ether) and In the mixture that water forms (Nantong Yongle Chemical Co., Ltd., 98wt%), the aqueous suspension of cyanuric chloride is obtained;

[0043] Under the condition of pH value of 7~9 and 0℃~5℃, an aqueous solution of 2,4-diaminobenzenesulfonic acid (9.4 g of 2,4-diaminobenzenesulfonic acid (0.05mol) was dissolved in 100 mL of water Obtained] is added dropwise to the aqueous suspension of the above-mentioned cyanuric chloride, and after the addition is completed, the mixture is kept at 0° C. to 5° C. for at least 2 hours to obtain the compound represented by formula II.

[0044] (2) preparation of compound shown in formula V-1:

[0045]

[0046] The compound shown in formula III-1 (18g, 0.05mol) and 150mL o...

Embodiment 2

[0057]

[0058] Except replacing 2,5-dimethoxyaniline (compound of formula IV-1) in Example 1 with 2-amino-4-methoxybenzenesulfonic acid (compound of formula IV-2), other steps And the reagents used are the same as those in Example 1, to obtain the target substance (abbreviated as "dye B"), (the maximum absorption wavelength of dye B in water λ=433 nm).

[0059] Elemental analysis results: theoretical value (%) C: 29.78, H: 2.31, N: 10.29; experimental value (%) C: 29.785, H: 2.28, N: 10.49. ESI (m / z) 1089.8 (M+H).

[0060] The schematic structure of dye B is as follows:

[0061]

Embodiment 3

[0063]

[0064] Except for replacing the compound of formula III-1 in Example 1 with the compound of formula III-2, the other steps and the reagents used are the same as in Example 1 to obtain the target compound (abbreviated as "dye C"), (dye C is in Maximum absorption wavelength in water λ = 427 nm).

[0065] Elemental analysis results: theoretical value (%) C: 32.37, H: 2.62, N: 10.78; experimental value (%) C: 32.56, H: 2.60, N: 10.93. ESI (m / z) 1039.8 (M+H).

[0066] The schematic structure of dye C is as follows:

[0067]

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Abstract

The present invention relates to a compound containing multiple sulfonic acid groups and use thereof, wherein the compound is a compound represented by formula I or a salt thereof (R 1 ~R 5 For the definition, please refer to the description or the claims). The compounds provided by the present invention are useful as (yellow-orange) reactive dyes in non-aqueous media for dyeing cotton-containing fabrics.

Description

technical field [0001] The present invention relates to a kind of containing a plurality of sulfonic acid groups (SO 3 H) compounds and uses thereof, in particular, relate to a compound containing a plurality of sulfonic acid groups (SO 3 Compounds of H) and their use in non-aqueous media as (yellow-orange) reactive dyes for dyeing cotton fabrics. Background technique [0002] Reactive dyes are the first choice for dyeing cotton fibers (or fabrics containing cotton fibers). They have the characteristics of relatively simple manufacturing process and dyeing process, complete color spectrum and excellent color fastness on cotton fibers. The dyeing of cotton fibers by traditional reactive dyes must be realized in an aqueous medium, so after dyeing, a large amount of dyeing wastewater will be produced. [0003] Under the situation of increasing environmental protection requirements, it is very necessary to improve the dyeing process of reactive dyes. An improvement is to dye ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/50C07D403/12C09B62/51C09B62/085D06P1/382D06P3/66
Inventor 沈永嘉何瑾馨王晗武文俊董霞茆勇军刘翔宇
Owner EAST CHINA UNIV OF SCI & TECH