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A kind of yellow reactive dye for dyeing nylon and preparation method thereof

A reactive dye and yellow technology, which is applied in the field of yellow reactive dye and its preparation, can solve the problems of low absorption rate, poor wet fastness of nylon, high concentration of dyeing waste liquid, etc., and achieve high absorption rate and lifting rate, wet Excellent fastness performance, bright and beautiful shade effect

Active Publication Date: 2016-03-02
TIANJIN DEK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor wet fastness of nylon dyed with acid dyes, the shade is not very bright, but the absorption rate is low, and the concentration of dyeing waste liquid is high, causing pollution to the environment.
In the 21st century, due to the constraints of the environment and ecology, the requirements for color uptake rate, color fixation rate and dyeing waste liquid are getting higher and higher, and acid dyes can no longer meet the needs of nylon dyeing.

Method used

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  • A kind of yellow reactive dye for dyeing nylon and preparation method thereof
  • A kind of yellow reactive dye for dyeing nylon and preparation method thereof
  • A kind of yellow reactive dye for dyeing nylon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] A yellow reactive dye has the following structural formula:

[0077]

[0078] The preparation method of above-mentioned yellow reactive dye, comprises the steps:

[0079] a. Dissolution of p-beta-hydroxyethylsulfone sulfate aniline: add 1800 liters of water to the reaction tank, then add 301kg p-beta-hydroxyethylsulfone sulfate aniline, stir evenly, adjust pH=3.8 with sodium bicarbonate -4, get p-beta-hydroxyethyl sulfone sulfate aniline solution, standby;

[0080] b. Shrinkage reaction: add 800 liters of water, 1500Kg of crushed ice in the reaction tank, stir, add 188kg of cyanuric chloride, and after ice grinding for 15 minutes, start to drop the p-β-hydroxyethyl sulfone sulfuric acid prepared in step a After the addition of the ester aniline solution, the pH was maintained at 2-4 with sodium bicarbonate, and the temperature was maintained at 6-8°C. After 5 hours of reaction, a shrinkage reaction solution was obtained. spare;

[0081] c. Two-shrinkage reaction: ...

Embodiment 2

[0099] A yellow reactive dye has the following structural formula:

[0100]

[0101] The preparation method of above-mentioned yellow reactive dye, comprises the steps:

[0102] a. Dissolution of p-beta-hydroxyethylsulfone sulfate aniline: add 1800 liters of water to the reaction tank, then add 301kg p-beta-hydroxyethylsulfone sulfate aniline, stir evenly, adjust pH=3.8 with sodium bicarbonate -4, get p-beta-hydroxyethyl sulfone sulfate aniline solution, standby;

[0103] b. Shrinkage reaction: add 800 liters of water, 1500Kg of crushed ice in the reaction tank, stir, add 188kg of cyanuric chloride, and after ice grinding for 15 minutes, start to drop the p-β-hydroxyethyl sulfone sulfuric acid prepared in step a After the addition of the ester aniline solution, the pH was maintained at 2-4 with sodium bicarbonate, and the temperature was maintained at 6-8°C. After 5 hours of reaction, a shrinkage reaction solution was obtained. spare;

[0104] c. Two-shrinkage reaction: ...

Embodiment 3

[0120] A yellow reactive dye has the following structural formula:

[0121]

[0122] The preparation method of above-mentioned yellow reactive dye, comprises the steps:

[0123] a. Dissolution of p-beta-hydroxyethylsulfone sulfate aniline: add 1800 liters of water to the reaction tank, then add 301kg p-beta-hydroxyethylsulfone sulfate aniline, stir evenly, adjust pH=3.8 with sodium bicarbonate -4, make p-beta-hydroxyethyl sulfone sulfate aniline solution, standby;

[0124] b. Shrinkage reaction: add 800 liters of water, 1500Kg of crushed ice in the reaction tank, stir, add 188kg of cyanuric chloride, and after ice grinding for 15 minutes, start to drop the p-β-hydroxyethyl sulfone sulfuric acid prepared in step a After the addition of the ester aniline solution, the pH was maintained at 2-4 with sodium bicarbonate, and the temperature was maintained at 6-8°C. After 5 hours of reaction, a shrinkage reaction solution was obtained. spare;

[0125] c. Two-shrinkage reaction:...

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Abstract

The invention relates to a yellow reactive dye for dyeing nylon and a preparation method thereof; a molecular structure of the yellow reactive dye is shown as follows; the invention also provides the preparation method of the reactive die; the yellow reactive dye of the invention has bright and beautiful light color, has very excellent wet fastness performance, very high sucking rate and promoting rate and is simple and convenient to operate.

Description

technical field [0001] The invention relates to a reactive dye and a preparation method thereof, in particular to a yellow reactive dye used for dyeing nylon and a preparation method thereof. Background technique [0002] Now the dyes generally used for dyeing nylon are acid dyes and weak acid dyes. Because the wet fastness of nylon dyed with acid dyes is not good, the shade is not very bright, but the absorption rate is low, and the concentration of dyeing waste liquid is high, which pollutes the environment. In the 21st century, due to the constraints of the environment and ecology, the requirements for color uptake rate, color fixation rate and dyeing waste liquid are getting higher and higher, and acid dyes can no longer meet the needs of nylon dyeing. The invention provides a kind of non-metal complex dye, which is better for dyeing nylon. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a product that can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/24C09B62/085D06P1/38D06P3/24
Inventor 张兴华邢广文
Owner TIANJIN DEK CHEM