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Composite reactive yellow dye and preparation method thereof

A reactive yellow and dye technology, applied in the field of dyes, can solve the problems of poor compatibility of navy blue and red dyes, low dye fixation rate, unfavorable dyeing of dark colors, etc., and achieves bright colors, high solubility, and good salt and alkali resistance stability. Effect

Active Publication Date: 2013-01-30
无锡润新染料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, reactive yellow dyes are generally prepared by coupling 2-naphthylamine-3,6,8-trisulfonic acid diazonium salt with m-ureamidoaniline to obtain a dye matrix, and then introducing active groups to synthesize reactive dyes, such as C.I. Reactive Yellow 145 And C.I. Reactive Yellow 176, etc. These dyes have low color fixation rate, are not conducive to dyeing dark colors, have high directness, and have poor compatibility with navy blue and red dyes with low directness, and have certain defects in performance.

Method used

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  • Composite reactive yellow dye and preparation method thereof
  • Composite reactive yellow dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a) Beat 1.0 mole of sulfonated meta-ester with ice water for 0.5 hours, add 2 moles of hydrochloric acid, add 1.01 moles of 30% sodium nitrite solution, keep the temperature at 0-5°C, and keep the Congo red test paper showing blue and starch during the addition process Potassium iodide test paper is blue under the microscope, keep the conditions for reaction for 1 hour, balance the slightly excess nitrous acid with sulfamic acid, and control the volume to 5000ml / mol to obtain the diazonium salt.

[0022] b) Add 1.0 mole of m-urea amidoaniline to the balanced diazonium salt and stir well, adjust the pH to 4.5~6.5 with soda ash solution, keep the pH value, and react for 2 hours at a temperature of 5-8°C to obtain a coupling The reaction solution.

[0023] c) Beat 1.02 moles of cyanuric chloride in ice water for 45-60 minutes, control the temperature at about -1-1°C, add the coupling reaction solution after beating, and adjust the pH to 6-6.5 with soda solution at a temper...

Embodiment 2

[0027] Change the para-ester component in the secondary condensation reaction of Example 1d) to meta-ester, use dry baking soda to keep the pH at 2.5~3.5, raise the temperature to 45°C in 1-1.5 hours, adjust the pH to 5.5~6.0 and react for 6 hours, The pH is stable, and the pH is adjusted to 6.0~6.5, which is used for concentration and purification of nanofiltration membranes.

[0028] Mix according to the mass ratio of 30.70 after folding, add a total amount of 10% sodium sulfate, and 2% dustproof agent, and spray dry to obtain a commercial product. The dye has moderate reactivity, 20°C solubility greater than 200g / l, 1 / 1 dyeing depth: light fastness 5~6, soaping fastness 4-5, perspiration fastness 4~5, chlorine water immersion fastness Grade 4, dry rubbing fastness 4~5, wet rubbing fastness 4, ironing fastness 4, the product performance is better than traditional reactive yellow dyes.

Embodiment 3

[0030] Add 1.035 moles of cyanuric fluoride to the coupling reaction solution obtained in Example 1b), keep the temperature at 0~2°C, use 20% soda ash to keep the pH value at 6.0~6.5, add the time for 1 hour, and keep the condition for reaction 3 1 hour, add 1.15 moles of dry powdered para-ester, keep the pH at 6.0~6.5, raise the temperature to 25~30°C, keep the pH for 5 hours, and use it for concentration and purification by nanofiltration membrane. .

[0031] After the dye solution was dried, 15% of the mass ratio was added to the alkali-resistant diffusing agent JS-K and 2% of the dustproof agent for spray drying to obtain commercial dyes.

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Abstract

The invention discloses a composite reactive yellow dye and a preparation method thereof. The composite reactive yellow dye is shown as a formula (I), wherein X is Cl or F; and vinyl sulfone sulfuric acid ester group is at a meta-position or a para-position of phenyl. The novel composite reactive yellow dye has a red-light yellow dye structure with three reactive groups and is obtained by compounding solutions in proportion and performing standardization and spray-drying. The solubility is high and more than 200g / l, the product is bright-colored, the color fastness is as high as 90 percent, the dyeing buildup is improved, the composite reactive yellow dye can be used for dark color dyeing, reactivity is high, saline-alkaline resistance is good, stability is ensured, and the composite reactive yellow dye is suitable for common dip dyeing, pad dyeing, and pollution-free dyeing and finishing processes such as cold batch dyeing and wet short-steaming dyeing.

Description

technical field [0001] The invention belongs to the technical field of dyes, and relates to a novel composite reactive yellow dye and a manufacturing method thereof. Background technique [0002] At present, reactive yellow dyes are generally prepared by coupling 2-naphthylamine-3,6,8-trisulfonic acid diazonium salt with m-ureamidoaniline to obtain a dye matrix, and then introducing active groups to synthesize reactive dyes, such as C.I. Reactive Yellow 145 And C.I. Reactive Yellow 176, etc. These dyes have low color fixation rate, are not conducive to dyeing dark colors, have high directness, and have poor compatibility with navy blue and red dyes with low directness, and have certain defects in performance. Contents of the invention [0003] The purpose of the present invention is a new type of composite reactive yellow dye developed for the current printing and dyeing industry for high fixation rate, high solubility, strong process applicability, energy saving and envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/51C09B67/24
Inventor 史锦峰曾建徽任争艳
Owner 无锡润新染料有限公司
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