Yellow reactive dye and preparation method thereof

A reactive dye, yellow technology, applied in the field of yellow reactive dyes, can solve the problems of general structure color development, color flower appearance, color point, poor washability, etc.

Inactive Publication Date: 2015-09-09
华新珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantage 1: Patent 2 is a benzene series, and the dyes synthesized from benzene series will be lighter
Disadvantage 2: Patent 2 dicouple and tricouple are para-esters or meta-esters, and the color development ability of the synthesized structure is average
Insufficient 3: Reactive dyes are also called water-soluble dyes. Reactive dyes must have a certain amount of water-soluble groups, such as sulfonic acid groups, etc.
The sulfonic acid group contained in the overall structure of patent 2 is relatively small, and the solubility of the dye is not particularly good. Moreover, the solubility of the dye will be greatly reduced after deesterification, and color spots and color spots will appear during dyeing, and its washability will also change. Poor, resulting in lower washing fastness and crocking fastness of the dye

Method used

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  • Yellow reactive dye and preparation method thereof
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  • Yellow reactive dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment 1: a kind of yellow reactive dye, is made up of the compound of simple formula (1-1) structure:

[0071]

[0072] (1-1) Its synthetic method step of the compound of structure is as follows:

[0073] 1. Diazo reaction: Add 23g of Tuolic acid into 100g of water and 50g of crushed ice solution for beating for 1 hour. Then add 14g hydrochloric acid (30%), after stirring for 1 minute, 26g of the 30% sodium nitrite solution that dissolves clear is added dropwise in the good tunic acid of beating with the time of 20 minutes and carry out diazotization reaction, dropwise process Control the temperature at 15-20°C, and control the pH value at 1.0-1.2. And make the starch potassium iodide test paper microscopically blue, and the Congo red test paper microscopically blue. After the sodium nitrite solution is added dropwise, keep the temperature at 15-20° C., control the pH value at 1-1.2, stir and react for 30 minutes, and then balance the excess sodium nitrite wit...

Embodiment 2

[0086] Embodiment 2: a kind of yellow reactive dye, is made up of the compound of simple formula (1-2) structure:

[0087]

[0088] (1-2) Its synthetic method step of the compound of structure is as follows:

[0089] 1. Diazo reaction: Add 40g of sulfonated turezic acid into 100g of water and 50g of crushed ice solution for beating for 1 hour. Then add 15g of hydrochloric acid (30%), after stirring for 1 minute, add 26g of the 30% sodium nitrite solution of the solution dropwise to the well-beaten sulfonated tunic acid for 20 minutes to carry out the diazotization reaction, dropwise During the process, the temperature is controlled at 8-10°C, and the pH value is controlled at 1.0-1.2. And make the starch potassium iodide test paper microscopically blue, and the Congo red test paper microscopically blue. After the sodium nitrite solution is added dropwise, keep the temperature at 8-10°C, control the pH value at 1-1.2, stir and react for 30 minutes, and then balance the exc...

Embodiment 3

[0101] Embodiment 3: a kind of yellow reactive dye, is made up of the compound of simple formula (1-3) structure:

[0102]

[0103] (1-3) Its synthetic method step of the compound of structure is as follows:

[0104] 1. Diazo reaction: Add 32g of amino acid C into 100g of water and 50g of crushed ice solution for beating for 1 hour. Then add 15g hydrochloric acid (30%), after stirring for 1 minute, 26g of the 30% sodium nitrite solution that will be dissolved is added dropwise in the amino acid C that has been beaten for 20 minutes to carry out the diazotization reaction. The temperature is controlled at 8-10°C, and the pH value is controlled at 1.0-1.2. And make the starch potassium iodide test paper microscopically blue, and the Congo red test paper microscopically blue. After the sodium nitrite solution is added dropwise, keep the temperature at 8-10°C, control the pH value at 1-1.2, stir and react for 30 minutes, and then balance the excess sodium nitrite with 0.5 g o...

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Abstract

The invention relates to a yellow reactive dye and a preparation method thereof. The reactive dye comprises any one compound selected from a general formula (1) or a mixture of any more than two compounds with any proportion selected from the general formula (1) through complex formulation; wherein in the formula (1), R1, R2, R3, R4 are respectively and independently represented as -H, -CH3, -OCH3 or -SO3M1; Y1 and Y2 are respectively represented as -CH=CH2 or -C2H4OSO3M1; M1 and M2 are respectively and independently represented as hydrogen or alkali metal, and n is 1, 2, 3. The yellow reactive dye has excellent coloring synchronicity, high dyeing rate and color fixing rate, good level-dyeing property, excellent solarization and excellent friction fastness.

Description

technical field [0001] The invention belongs to the field of reactive dyes in new material technology, in particular to a yellow reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes are currently taking more and more market share, and people are paying more and more attention to their research. The research on reactive dyes began in 1956, and it has been half a century. In recent years, many review articles on reactive dyes have been published, not only involving the development of reactive dyes themselves, but also including the application performance and process of reactive dyes, focusing on improving their application performance and environmental protection. [0003] Traditional vinyl sulfone-based reactive yellow dyes are generally formed by combining 2,4-diaminobenzenesulfonic acid with para-ester or sulfonated para-ester diazo. All are monoazo or disazo dyes, such as patent 1, the name is yellow reactive dye composition and its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/513C09B67/24
Inventor 华新珍
Owner 华新珍
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