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A kind of yellow reactive dye and its preparation method and application

A reactive dye and yellow technology, applied in reactive dyes, dyeing methods, azo dyes, etc., can solve problems such as low coloring rate, high salt content, and large average particle size of dyes

Active Publication Date: 2017-03-29
TIANJIN DEK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Digital inkjet printing puts forward higher requirements on the quality of the ink, so the viscosity, surface tension, particle size, pH value, and conductivity of the ink must be in a specific range, so the dyes used in the preparation of the ink have a correspondingly higher requirement. Requirements, such as the dye strength of the ink, high water and sunlight fastness and good compatibility of dye color matching, etc., but the current inkjet dyes have a large average particle size, high salt content, low coloring rate and fast Low degree, can not meet the needs of inkjet printing

Method used

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  • A kind of yellow reactive dye and its preparation method and application
  • A kind of yellow reactive dye and its preparation method and application
  • A kind of yellow reactive dye and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] a. Preparation of condensate

[0074] a-1-1. Weigh 3.5 grams of 100% ammonia water and dilute it with water to form a 10% by mass ammonia solution for later use.

[0075] a-1-2. Add a small amount of ice water and ice grinding aid in a beaker, and then add 18.5 grams of 100% cyanuric chloride to mix the materials evenly. Add ammonia solution dropwise, T=0-5°C, pH=4.0-5.0, dropwise is completed, then react for 3 hours, add 21.0 grams of 100% sodium 2,4-diaminobenzenesulfonate to the condensate, adjust T = 30-35°C, pH = 6.0-7.0, react for 6 hours to obtain a dicondensate, set aside.

[0076] b. Diazotization reaction

[0077] Add 30% hydrochloric acid solution, crushed ice and sodium nitrite solution to the dicondensate solution obtained in step a. React for 2 hours at 0-5°C, pH 2 Slight excess), use sulfamic acid to eliminate excess nitrous acid, to be coupled.

[0078] c. Coupling reaction

[0079] c-1-1. Add a small amount of bottom water in a beaker, 16.4 grams o...

Embodiment 2

[0089] a. Preparation of condensate

[0090] a-1-1, add a small amount of bottom water in the beaker, 28.1 grams of 100% p-(meta) ester, use NaHCO 3 Neutralize to pH=4.0-5.0, set aside.

[0091] a-1-2. Add a small amount of ice water and ice grinding aid in a beaker, and then add 18.5 grams of 100% cyanuric chloride to mix the materials evenly. Add the p-ester solution dropwise, T=0-5°C, pH=3.0-4.0, after the dropwise addition is completed, then react for 4 hours, add 21.0 grams of 100% sodium 2,4-diaminobenzenesulfonate to the condensate, Adjust T=30-35°C, pH=-6.0-7.0, and react for 6 hours to obtain a dicondensate, which is set aside.

[0092] b. Diazotization reaction

[0093] Add 30% hydrochloric acid solution, crushed ice and sodium nitrite solution to the dicondensate solution obtained in step a. React for 2 hours at 0-5°C, pH 2 Slight excess), use sulfamic acid to eliminate excess nitrous acid. To be coupled.

[0094] c. Coupling reaction

[0095] c-1-1. Add a sm...

Embodiment 3

[0107] a. Preparation of condensate

[0108] a-1-1. Add a small amount of bottom water in a beaker, 38.3 grams of 100% 2-naphthylamine-3,6,8-trisulfonic acid, and use NaHCO 3 Neutralize to pH=6.0-7.0, set aside.

[0109] a-1-2. Add a small amount of ice water and ice grinding aid in a beaker, and then add 18.5 grams of 100% cyanuric chloride to mix the materials evenly. Add dropwise 2-naphthylamine-3,6,8-trisulfonic acid solution, T=0-5°C, pH=4.0-5.0, dropwise addition is complete, then react for 4 hours, add 2,4- 21.0 g of sodium diaminobenzenesulfonate, adjust T=30-35° C., pH=6.0-7.0, and react for 6 hours to obtain a dicondensate.

[0110] b. Diazotization reaction

[0111] Add 30% hydrochloric acid solution, crushed ice and sodium nitrite solution to the dicondensate solution obtained in step a. React for 2 hours at 0-5°C, pH 2 Slight excess), use sulfamic acid to eliminate excess nitrous acid. To be coupled.

[0112] c. Coupling reaction

[0113] c-1-1, add a small...

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PUM

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Abstract

The invention discloses yellow reactive dye, and a preparation method and application of the yellow reactive dye. The dye has structural formula (I) as follows, and has relatively high reactivity, good solubility and brilliant hue during dyeing and printing. In addition, the dye has high solarization fastness, and very high exhaustion rate and fixation rate.

Description

technical field [0001] The invention relates to a reactive dye and its preparation method and application, in particular to a yellow reactive dye, its preparation method and its application in ink-jet printing and dyeing. Background technique [0002] The development process of textile printing technology is ancient and long. With the rapid development of textile printing and dyeing industry, printing output is also increasing. The emergence of digital printing technology has brought a major technological revolution to the textile industry. Digital printing is a green production method, and the printing process does not use water. , no need to prepare color paste, no waste dye liquid color paste, low noise. Digital inkjet printing puts forward higher requirements on the quality of the ink, so the viscosity, surface tension, particle size, pH value, and conductivity of the ink must be within a specific range, so the dyes used in the preparation of the ink have a corresponding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/51C09B62/405C09B62/665D06P1/384D06P1/382D06P3/66D06P3/10D06P3/32D06P3/14D06P3/24D06P3/85D06P5/30
Inventor 张兴华李荣才许建
Owner TIANJIN DEK CHEM