Reactive dye

A reactive dye, CH2 technology, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems of high concentration of suspended solids, high chroma of dyeing and finishing wastewater, high biochemical oxygen demand, etc., and achieve good dyeing depth , High dye utilization rate, high coloring rate effect

Inactive Publication Date: 2014-01-15
EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dyeing and finishing wastewater of the textile industry has high chroma, high biochemical oxygen demand, high temperature and high concentration of suspended solids, which are likely to cause serious environmental pollution problems
Furthermore, some known reactive dyes contain organic halogens, which are more harmful to the environment and ecology

Method used

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  • Reactive dye
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 18.4 parts of cyanuric chloride and disperse in 150 parts of water at 0°C, then add 4.2 parts of cyanamide powder, and use sodium hydroxide (NaOH) solution to control the pH value of the reaction solution between 10 and 11 , after 60 minutes, add 52.3 parts of 3-ureido-4-[2-sulfo-4-(β-ethylsulfonyl sulfate)-phenylazo]-aniline (3-ureido-4-[2 -sulfo-4-(β-sulphatoethyl sulphonyl)-phenylazo]-aniline), controlled at 40~55°C, pH 6~8, after reacting for about 4 hours, add 12.4 parts of nicotinic acid (Nicotinic acid), control at Carry out reaction at 60~65 ℃ for 5 hours, obtain yellow product through salting-out, extraction, filtration and drying, and by the usual identification technique in this field, to confirm that the product of the structure shown in following formula (1) is obtained: λmax=423nm, The molecular weight measured by liquid chromatography / mass spectrometer (LC / MS) is 764.lg / mole.

[0044]

Embodiment 2

[0046] Take 18.4 parts of cyanuric chloride and disperse in 150 parts of water at 0°C, then add 4.2 parts of cyanamide powder, and use sodium hydroxide (NaOH) solution to control the pH value of the reaction solution between 10 and 11 , After keeping for 60 minutes, add 52.3 parts of 3-acetamide-4-[2-sulfo-4-(β-sulfuric acid ethylsulfonyl)-phenylazo]-aniline (3-acetylamino-4-[2 -sulfo-4-(β-sulphatoethylsulphonyl)-phenylazo]-aniline), controlled at 40~55°C, pH 6~8, after reacting for about 4 hours, add 31.0 parts of niacin (Nicotinic acid), add sodium acetate Control the pH value of the reaction solution between 5 and 6, react at 85 to 90°C for 3 hours, obtain a yellow product through salting out, extraction, filtration and drying, and use the usual identification techniques in this field to confirm that the following formula ( 2) The product with the structure shown: λmax=419nm, the molecular weight measured by liquid chromatography / mass spectrometer (LC / MS) is 789.3g / mole.

...

Embodiment 3

[0049] Take 57.3 parts of 3-ureido-4-[1-sulfo-6-(β-ethylsulfone sulfate)-naphthyl-2-azo]-aniline (3-ureido-4-[1-sulfo-6 -(β-sulfatoethylsulfone)-naphthalenyl-2-azo]-aniline), instead of the 3-ureido-4-[2-sulfo-4-(β-sulfatoethylsulfonyl)-phenylene of Example 1 Nitrogen]-aniline (3-ureido-4-[2-sulfo-4-(β-sulphatoethylsulphonyl)-phenylazo]-aniline), the yellow product was obtained according to the same preparation procedure, and was confirmed by the usual identification techniques in the art The product with the structure shown in the following formula (3): λmax=425nm, the molecular weight measured by liquid chromatography / mass spectrometer (LC / MS) is 814.0g / mole.

[0050]

[0051] Embodiment 4-6 Referring to the synthesis method of Examples 1-3, the yellow dye structural formula of Examples 4-6 can be obtained as follows:

[0052]

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Abstract

Provided is a reactive dye, and the dye is a compound expressed by the following formula (I), wherein R, A, and Z are defined in specification. The formula (I) compound is especially suitable to be used for cold pressing dye processes containing hydroxide radical or nitrogen fibers.

Description

technical field [0001] The invention relates to a novel reactive dye, in particular to a novel reactive dye suitable for cold press dyeing of hydroxyl-containing or nitrogen-containing fibers. Background technique [0002] Reactive dyes have reactive groups in their structure that can react with functional groups on the material to be dyed to form bonds. The valence bond is combined to achieve the purpose of dyeing. Many reactive dyes containing one or more reactive groups (eg, vinyl sulfone, etc.) have been disclosed. [0003] Materials dyed with reactive dyes have the characteristics of good wet fastness, but after dyeing, a large amount of water is required to wash away the hydrolyzed dyes that have not reacted with the material (cannot be fixed to the material). The dyeing and finishing wastewater of the textile industry has high chroma, high biochemical oxygen demand, high temperature and high concentration of suspended solids, which are likely to cause serious enviro...

Claims

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Application Information

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IPC IPC(8): C09B62/513C09B62/51
CPCC09B62/00
Inventor 陈文政邓肯·A·S·飞利浦约翰·A·泰勒
Owner EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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