Reactive blue dye and preparation and application thereof

A reactive blue and dye technology, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems of low color fixation rate, alkali resistance and light fastness, and achieve good color fixation rate, excellent performance, good stability effect

Active Publication Date: 2017-04-26
TAIXING JINYUN DYESTUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reactive dyes have bright color and good wet fastness, but their color fixation rate, alkali resistance and light fastness are generally low, especially the blue reactive dyes

Method used

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  • Reactive blue dye and preparation and application thereof
  • Reactive blue dye and preparation and application thereof
  • Reactive blue dye and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1: the preparation of formula (I-1) compound

[0065] (1) One diazo, coupling reaction

[0066] In a 250ml beaker, add 20 parts of ice (parts by mass), 24.3 parts of 30% hydrochloric acid, 21.7 parts of 2-amino-4-sulfonic acid benzoic acid, ice grinding and beating for 30min, slowly add 6.97 parts of sodium nitrite to generate diazonium salt, After the sodium nitrite is completely added, stir for 1 hour, and use sulfamic acid to eliminate the slight excess of sodium nitrite; slowly add the diazonium salt to 23.6 parts of diethyl phenylmalonate dropwise, and use baking soda while adding Adjust the pH to 3.5-5.0, continue the reaction for 2 hours after the addition, and the diazonium salt will disappear completely, while keeping the system temperature at 0-10°C.

[0067]

[0068] (2) Secondary diazonium, coupling reaction

[0069] In a 250ml beaker, add 20 parts of ice, 24.3 parts of 30% hydrochloric acid, 20.4 parts of 2-amino-4-sulfonic acid benzoic acid...

Embodiment 2-5

[0087] According to the method described in Example 1, the difference is that the components coupled with the malonic acid series, the amine and the chloroalkane for the alkylation reaction are reacted with the raw material compounds in equimolar amounts in the following Table 1, and the present invention can be obtained. The reactive blue dyes of the formula (I-2~I-5).

[0088] Table 1: Embodiment 2-5 makes reactive blue dye

[0089]

Embodiment 6

[0090] Embodiment 6: the preparation of reactive dark blue dye (II-6) compound

[0091] (1) Diazo, coupling reaction

[0092] In a 250ml beaker, add 20 parts (parts by mass) of ice, 24.3 parts of 30% hydrochloric acid, 28.1 parts of meta-ester, ice grinding and beating for 30 minutes, slowly add 6.97 parts of sodium nitrite to generate diazonium salt, wait until sodium nitrite is completely added Stir for 1 h, use sulfamic acid to eliminate the slight excess of sodium nitrite; add 31.9 parts of H acid to the diazonium salt, and continue the reaction until the diazonium salt disappears completely, while keeping the system temperature at 0-10°C.

[0093]

[0094] (2) Primary condensation of p-phenylenediamine and cyanuric fluoride

[0095] In a 1000ml flask, add 10.8 parts of p-phenylenediamine and 50 parts of ice water, add 13.5 parts (percentage) of cyanuric fluoride to p-phenylenediamine, adjust the pH to 3.5-5.0 with baking soda, and keep the temperature 0-10°C, react f...

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PUM

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Abstract

The invention discloses a reactive blue dye and preparation and application thereof. The structure of the reactive blue dye is shown in a formula (I) defined in the description. The reactive blue dye is novel in structure and excellent in performance, has the good fixation rate and color fastness, can effectively lower resource consumption, has the good stability after dyeing is performed, is bright in color, can be widely applied to dip dyeing, pad dyeing, inkjet printing and other dyeing technologies of cotton fiber products such as polyeseter, fiber and artificial cotton, is low in production cost and can achieve large-scale application and popularization.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a reactive dye, in particular to a reactive blue dye, its preparation method and its application in cotton fiber printing and dyeing. Background technique [0002] Reactive dyes have bright color and good wet fastness, but their color fixation rate, alkali resistance and light fastness are generally low, especially blue reactive dyes. Reactive dyes with multiple reactive groups have a better color fixation rate than reactive dyes with single reactive groups. At the same time, dye molecules and fibers can form a network cross-linked structure, so that dyes can be better combined with fibers. Therefore, the synthesis and development of reactive dyes with multiple reactive groups has always been a research hotspot. Contents of the invention [0003] The invention provides a reactive blue dye with novel structure and excellent performance and a preparation method thereof....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/515D06P1/384D06P3/66
CPCC09B62/5036D06P1/384D06P3/666
Inventor 苏金奇鞠苏华王国民张卫平黄磊陈爱民周沈勇辛兰赵卫国
Owner TAIXING JINYUN DYESTUFF
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