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Compound capable of being used as reactive navy blue dye and preparation method of compound

A compound and reactive technology, applied in the field of compounds that can be used as reactive navy blue dyes and their preparation, can solve the problems of rubbing fastness only 1-2 grades, which cannot be achieved, and achieve bright color and low directness. , the effect of less isomers

Active Publication Date: 2015-03-25
TAIXING JINYUN DYESTUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The absolute fixation rate of the dyes synthesized by the above process is only 60-65%, which is on the low side; and the rubbing fastness is only 1-2 grades, which cannot meet the above requirements

Method used

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  • Compound capable of being used as reactive navy blue dye and preparation method of compound
  • Compound capable of being used as reactive navy blue dye and preparation method of compound
  • Compound capable of being used as reactive navy blue dye and preparation method of compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Nitrogen induction reaction

[0041] Add 28.1 parts by weight of 4-(β-hydroxyethylsulfone sulfate) aniline to 100 parts of ice water, add 0.1 part of JS-C wetting agent at the same time, beat at about 0°C for 2 hours, then add 35 parts of hydrochloric acid, Add ice to control the temperature at 0-5°C. Slowly add 6.9 parts of sodium nitrite (made into a 30% solution) in a trickle under the liquid surface, and control the reaction solution in the process of adding sodium nitrite solution to be blue to Congo red test paper, and to be slightly blue to starch KI test paper. After the sodium solution is added, keep a slight excess, and react at a temperature of 0-5°C for 1 hour, and use a small amount of sulfamic acid to eliminate the slight excess of nitrous acid before acid coupling.

[0042] 2. Acid couple reaction

[0043] Add 33.2 parts of H acid powder industrial product to the above diazonium salt in 4 times, and react at 10-15°C until the diazonium salt disappear...

Embodiment 2

[0051] 1. Nitrogen induction reaction

[0052] Add 28.16 parts by weight of 4-(β-hydroxyethylsulfone sulfate) aniline to 100 parts of ice water, add 0.1 part of JS-C wetting agent at the same time, beat at about 0°C for 2 hours, then add 35.9 parts of hydrochloric acid, Add ice to control the temperature at 0-5°C. Slowly add 7.0 parts of sodium nitrite (made into a 30% solution) in a trickle under the liquid surface. During the addition of sodium nitrite solution, the reaction solution is controlled to be blue to Congo red test paper, and slightly blue to starch KI test paper. After the sodium solution is added, keep a slight excess, and react at a temperature of 0-5°C for 1 hour, and use a small amount of sulfamic acid to eliminate the slight excess of nitrous acid before acid coupling.

[0053] 2. Acid couple reaction

[0054] Add 33.9 parts of H acid powder industrial product to the above diazonium salt in 5 times, and react at 10-15°C until the diazonium salt disappears....

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PUM

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Abstract

The invention discloses a compound capable of being used as a reactive navy blue dye. The structural general formula of the compound is as shown in Specification, wherein R1 represents either H or SO3H, and R2 is H, Cl, SO3H, CH3 or OCH3. The preparation method comprises the following steps: generating a diazonium salt component from a reaction among 4-(beta-hydroxyethyl sulfonyl sulfate) aniline, a wetting agent, hydrochloric acid and sodium nitrite; then, adding H acid to the diazonium salt component, and carrying out acidic coupling until the diazonium salt disappears; and performing alkaline coupling with diazonium salt generated under an action of 2-[2-(4-aminobenzenesul fonamide) ethyl sulfonyl] ethanol sulfate, a wetting agent, hydrochloric acid and sodium nitrite, filtering after the alkaline coupling, collecting a filtrate, and directly spray-drying to obtain a half-finished product. The compound disclosed by the invention has the characteristics of being bright in color, high in solubility, low in substantivity, good in compatibility, high in lifting capacity, high in fixation rate, good in various fastnesses, and the like; and rub resistance and washing fastness are higher than ordinary varieties of 0.5-1 grade.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a compound that can be used as a reactive navy blue dye and a preparation method thereof. Background technique [0002] Because the maximum absorption wavelength λmax of C.I reactive black 5 is 590-595nm, although it is a black reactive dye, it is actually a navy blue reactive dye with low color fixation rate and poor fastness. Black reactive dyes with jet blackness, 10-15% higher absolute color fixation rate and 1-2 grades of sun resistance and chlorine bleaching fastness. The ideal blue component's λmax should be 600-630nm. Currently developed The λmax of the product is within the above range, and the absolute color fixation rate is 15-20% higher than that of existing varieties, and the friction resistance and washing fastness are improved by 0.5-1 grade. [0003] The structural formula of reactive black KN-B (C.I reactive black 5) is as follows: [0004] [0005] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/513
Inventor 肖卫国奚进唐炬李华美丁骏黄红英
Owner TAIXING JINYUN DYESTUFF
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