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Reactive dark blue RGB diazo dyes and preparation method thereof

A technology of reactive navy blue and azo dyes, applied in azo dyes, reactive dyes, organic dyes, etc., can solve the problems of insufficient monochromatic blackness, low fixation rate, and inability to dye deep black.

Inactive Publication Date: 2008-08-27
赵卫国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The monochromatic blackness of the dye is not enough, the color fixing rate is low (generally between 60-65%), the lifting power is not high, and it cannot dye deep black
[0005] In addition, other navy blue (or black) on the market has lower color fixation rate or jet blackness than active navy blue NDS

Method used

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  • Reactive dark blue RGB diazo dyes and preparation method thereof
  • Reactive dark blue RGB diazo dyes and preparation method thereof
  • Reactive dark blue RGB diazo dyes and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Weigh 59 parts of ethyl sulfone sulfate aniline compounds containing sulfonic acid groups or methyl, methoxy, ethyl, ethoxy groups, add an appropriate amount of ice water and beat for 2 hours at 0°C.

[0038] (2) Then add quantitative hydrochloric acid, add 6.9 parts of sodium nitrite, temperature 5-8 ℃, control the blue color of Congo red test paper, KI test paper slightly blue, react for 1 hour after adding sodium nitrate, and eliminate the slight excess of nitrous acid.

[0039] (3) Add 34 parts of H acid to the diazonium salt, under the conditions of 0-15°C, PH=1.3-6.5, the first acid couple and then the base couple to obtain a red light reactive navy blue RGB dye.

Embodiment 2

[0040] Embodiment 2: Adopt the formula of Embodiment 1, couple under the condition of 10-15 ℃, PH=1.3-5.5, obtain a kind of partial blue reactive black S-G.

Embodiment 3

[0042] (1) Weigh 59.5 parts by weight of ethyl sulfone sulfate aniline compound containing sulfonic acid groups or methyl, methoxy, ethyl, ethoxy groups, add appropriate amount of ice water and beat for 2 hours at 0°C.

[0043] (2) Then add quantitative hydrochloric acid, add 6.9 parts of sodium nitrite, temperature 5-8 ℃, control the blue color of Congo red test paper, KI test paper slightly blue, react for 1 hour after adding sodium nitrate, and eliminate the slight excess of nitrous acid.

[0044] (3) Add 34 parts of H acid to the diazonium salt, under the conditions of 10-25°C, PH = 2-6.5, the first acid couple and then the base couple to obtain a red-light reactive blue C.I250.

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Abstract

Reactive navy blue RGB azo dye and a preparation process thereof are disclosed, and the structural formula showed as right formula, wherein R1=H, SO3H, OCH3, CH3, C2H5, OC2H5, and M=Na, K. The compound is prepared through coupling H acid with diazonium salt of sulphate ethyl sulphone aniline compound which comprises sulfonic acid group or methyl group, methoxyl group, ethyl group and ethoxyl group. The dye is suitable to be used on the dying, direct printing and discharge of cotton fiber, and has the advantages of evenly coloring, bright color, excellent fastness, favorable lifting power, high color yield and extreme high fixation yield.

Description

technical field [0001] The invention relates to a reactive navy blue RGB azo dye and a preparation method thereof. Background technique [0002] The structure of reactive black KN-B (C.I reactive black 5) is as follows: [0003] [0004] The monochromatic blackness of the dye is not enough, the color fixation rate is low (generally between 60-65%), the lifting power is not high, and it cannot be dyed dark black. [0005] In addition, other navy blue (or black) on the market has lower color fixation rate or jet blackness than active navy blue NDS. Contents of the invention [0006] The purpose of this invention is to provide a reactive navy blue RGB azo dye with stable performance, high color fixation rate, bright color, excellent lifting power, high color yield, and good dyeing depth and its preparation method: [0007] A kind of reactive navy blue RGB azo dye of the present invention claims reactive navy blue NDS or reactive blue C.I250 again, and its structural form...

Claims

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Application Information

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IPC IPC(8): C09B62/513C09B62/01
Inventor 赵卫国苏金奇鞠苏华张卫平焦新阳
Owner 赵卫国
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