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Orange nylon active dyestuff and preparation method thereof

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

Inactive Publication Date: 2011-12-21
TIANJIN DEK CHEM
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  • 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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  • Orange nylon active dyestuff and preparation method thereof
  • Orange nylon active dyestuff and preparation method thereof
  • Orange nylon active dyestuff and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] An orange nylon reactive dye has the following structural formula:

[0052]

[0053] The preparation method of above-mentioned nylon reactive dye orange comprises the steps:

[0054] a. Dissolution of p-beta-hydroxyethylsulfone sulfate aniline: add 2000 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, obtain p-β-hydroxyethyl sulfone sulfate aniline solution, for subsequent use;

[0055] b. Shrinkage reaction: add 1000 liters of water, 2500Kg 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;

[0056] c, ...

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PUM

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Abstract

The invention provides orange nylon active dyestuff and a preparation method thereof. The active dyestuff comprises the following structural formula as the accompanying drawing, wherein in the formula, R1 represents alkyl or alkenyl with 1 to 3 carbon atoms, preferably, the R1 in the formula is methyl, ethyl or vinyl, R2 represents nitryl or sulfonyl, and preferably, the R2 in the formula is nitryl. In addition, the invention also provides the preparation method of the orange nylon active dyestuff (nylon active orange), the prepared nylon active dyestuff orange has the vivid and bright colors, each wet firmness performance is very excellent, high clear suction rate and high improvement rate are realized, and in addition, the operation is simple and convenient.

Description

technical field [0001] The invention relates to a nylon reactive dye and a preparation method thereof. Especially an orange nylon reactive dye 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. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a product that can reduce environmental pollution, requires low cost of raw materials, and has bright color, excellent wet f...

Claims

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Application Information

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IPC IPC(8): C09B62/085C09B67/24
Inventor 张兴华邢广文
Owner TIANJIN DEK CHEM
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