Bright orange reactive dye as well as preparation method and application thereof

A reactive dye and orange technology, applied in reactive dyes, dyeing methods, azo dyes, etc., to achieve good dyeing depth, bright color, and clean process

Inactive Publication Date: 2016-04-20
HUBEI HUALI DYESTUFF INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a bright orange reactive dye, which has good dyeing depth, bright color, high color fixation rate and good light fastness, which makes up for the lack of deep dyeing varieties in the orange series reactive dyes currently on the market.

Method used

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  • Bright orange reactive dye as well as preparation method and application thereof
  • Bright orange reactive dye as well as preparation method and application thereof
  • Bright orange reactive dye as well as preparation method and application thereof

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preparation example Construction

[0027] Its preparation method comprises the following steps:

[0028] a, a condensation reaction: get cyanuric chloride and disperse it in water to obtain a cyanuric chloride beating liquid, add 2,4-diaminobenzenesulfonic acid aqueous solution in the cyanuric chloride beating liquid, and obtain a primary condensation liquid after the reaction;

[0029] b, diazotization reaction: after adding hydrochloric acid in the said primary condensation liquid, add sodium nitrite again, get diazonium liquid after reaction;

[0030] c. Primary coupling reaction: take N-ethyl-2-pyridone and add it to the diazo solution, and obtain a primary coupling after reaction;

[0031] d. Secondary condensation reaction: take J acid and disperse it in water and add it to the primary coupling compound, and obtain a secondary condensation liquid after the reaction;

[0032] e. Secondary coupling reaction: take the para-ester and disperse it in water, add hydrochloric acid, and then add sodium nitrite to...

Embodiment 1

[0036] 1) Add 100 parts of cyanuric chloride to ice and water for 30 minutes to disperse it in water (cyanuric chloride should be operated below 0°C, otherwise it will be easily decomposed), and 100 parts of 2,4-diaminobenzenesulfonate After the acid is dissolved in water, add it to the cyanuric chloride slurry, adjust the pH to 5.0 with dry baking soda, and react for 3 hours to obtain a condensate;

[0037] 2) Add 250 parts of hydrochloric acid (calculated as HCl) to the primary condensate, cool down to T=2°C, and add 102 parts of sodium nitrite aqueous solution (calculated as sodium nitrite) slowly and dispersedly within 20-25 minutes , maintain the temperature T=2°C, and use sulfamic acid to eliminate excess sodium nitrite after reacting for 2 hours; when the starch potassium iodide test paper shows colorless and Congo red test paper shows blue, the end point is reached, and the diazonium solution is obtained;

[0038] 3) Add 100 parts of N-ethyl-2-pyridone into the diazoni...

Embodiment 2

[0044] 1) Beat 110 parts of cyanuric chloride with appropriate amount of water for 30 minutes, dissolve 100 parts of 2,4-diaminobenzenesulfonic acid and add it to the beating liquid of cyanuric chloride, adjust pH=6.0 with baking soda dry powder, and react A condensate was obtained in 4 hours;

[0045] 2) Add 300 parts of hydrochloric acid (calculated as HCl) to the primary condensate, cool down to 5°C, add 102 parts of sodium nitrite aqueous solution (calculated as sodium nitrite) within 20-25 minutes, and maintain the temperature T= After reacting at 5°C for 2 hours, use sulfamic acid to eliminate excess sodium nitrite; when the starch potassium iodide test paper is used to detect colorless and Congo red test paper to detect blue, the end point is reached, and the diazonium solution is obtained;

[0046] 3) Add 110 parts of N-ethyl-2-pyridone into the diazonium solution obtained in step 2), adjust the pH to 7.0 with baking soda dry powder, maintain the temperature T=10°C, an...

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Abstract

The invention discloses bright orange reactive dye as well as a preparation method and an application thereof. The bright orange reactive dye is a compound adopting the structure shown in Formula I. The bright orange reactive dye has the characteristics of good deep dyeing property, bright color, Grade 5 of light fastness, Grade 4 of fastness to wet rubbing, higher than 85% of the fixation rate, high cleaning rate and the like.

Description

technical field [0001] The invention belongs to the field of dye synthesis, and in particular relates to a bright orange reactive dye and its preparation method and application. Background technique [0002] As the application rate of reactive dyes increases, the market demand is increasing, and the market's requirements for reactive dyes are also increasing. Therefore, in order to meet market demand, reactive dyes should be further improved in terms of color fixation rate, dyeing depth, light fastness, and rubbing fastness. At present, the orange series reactive dyes on the market are mainly light-colored, and there is a serious shortage of orange dyes with good deep dyeing properties. The invention provides a bright orange reactive dye, which has good deep dyeing property, bright color, high color fixation rate and good light fastness, and makes up for the lack of deep dyeing varieties of orange series reactive dyes in the current market. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/513D06P1/382D06P1/384D06P3/66
CPCC09B62/513D06P1/382D06P1/384D06P3/008D06P3/663D06P3/666
Inventor 崔孟元孟文朱训杰刘嵩何向华
Owner HUBEI HUALI DYESTUFF INDAL
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