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Preparation method of orange reactive dye

A reactive dye, orange technology, applied in the field of preparation of orange reactive dyes, can solve the problems of easy precipitation of orange components, high affinity, color difference, etc. The effect of fixation rate

Inactive Publication Date: 2013-03-27
褚平忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the jet blackness of the blended dyes is often not ideal, and because reactive orange KN-GR is the active group of dichlorotriazine and has a high affinity with cellulose fibers, it is first adsorbed on the fibers, while reactive black KNB is colored Slow, so it causes color difference, easy to cause color flower, especially when adding alkali to fix the color, the orange component is easy to sink and precipitate, causing color spots

Method used

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Experimental program
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Effect test

Embodiment Construction

[0007] The invention provides a kind of preparation method of orange reactive dye, it comprises the following steps: Step 1, a shrink reaction: put 150 parts of ice-water mixtures in a shrink barrel, add 18.5 parts of cyanuric chloride of 100%, at 0 Beat for 45-60 minutes at ℃, then add 4.2 parts of 100% cyanamide solution dropwise, control the temperature at 0-5℃ after adding, adjust the pH to 7-9 with 10% NaOH solution, and adjust the reaction for 10-40 minutes; Step 2, two shrinkage: Put 200 parts of water in the dissolving bucket, put in 23.9 parts of 100% J acid, adjust the pH to 5.8-6.5 with 10% NaOH solution after beating for one hour, dissolve it, and adjust the volume to control J The acid concentration is 4-5%, and then added to the condensate, the temperature is raised to 35-40°C, and the pH is adjusted to 3-6 with 15% pure lye, and the reaction is 3-4 hours to the end, and the temperature is lowered for later use; Step 3, carry out Diazo reaction: put 100 parts of ...

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PUM

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Abstract

The invention discloses a preparation method of an orange reactive dye. The preparation method comprises the following steps of: 1. primary condensation reaction; 2. secondary condensation; 3. diazo reaction; 4. coupling reaction: adding diazo salt to secondary condensation solution, controlling the temperature to be 0-15 DEG C, then adjusting the PH value to be 5.5-6.5 with 15% of pure alkali solution and diazo salt disappearing after reaction for 3 hours; and 5. third-time condensation: adding 2-aminoethyl-2' sulfonyl hydroxyethyl sulfone sulfate to coupling solution, adjusting the PH value to be 6.5-8.5 with 15% of pure alkali solution, then raising the temperature to 60-80 DEG C, controlling the temperature and the PH value, reacting for 4-5 hours until the finishing point and drying the dye solution, thus obtaining the orange reactive dye.

Description

technical field [0001] The invention provides a preparation method of orange reactive dye. Background technique [0002] The reactive dyes currently produced are usually halogenated triazine type, phenyl ethyl sulfone sulfate type or mixed type of halogenated triazine and phenyl ethyl sulfone sulfate ester. In the dyeing process, a large amount of salt is used to cause the color of dyeing wastewater. The degree is large and the environmental pollution is heavy. Secondly, when dyeing deep black, reactive black KN-B (reactive black 5) and reactive orange KN-GR (reactive orange 129) are often blended together. However, the jet blackness of the blended dyes is often not ideal, and because reactive orange KN-GR is the active group of dichlorotriazine and has a high affinity with cellulose fibers, it is first adsorbed on the fibers, while reactive black KNB is colored Slow, so it causes color difference, easy to cause color flower, especially when adding alkali to fix the color,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/51
Inventor 褚平忠孟云龙
Owner 褚平忠