Low-alkali or alkali-free active bright-blue dye and preparation method thereof

A technology of reactive brilliant blue and dyes, which is applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems of high energy consumption, labor consumption, and waste water, and achieve the reduction of waste water discharge, energy saving, and good dryness. The effect of wet fastness

Inactive Publication Date: 2015-02-25
ZHEJIANG YIDE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The chlorine on the active group "chlorotriazine" in the traditional KE or HE reactive dyes is open. The traditional blending and interweaving dyeing process is po

Method used

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  • Low-alkali or alkali-free active bright-blue dye and preparation method thereof
  • Low-alkali or alkali-free active bright-blue dye and preparation method thereof
  • Low-alkali or alkali-free active bright-blue dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Example 1: Preparation of reactive brilliant blue of formula (1-1).

[0045] A, a shrinkage reaction

[0046] 8g of cyanuric chloride, 30g of water, 100g of ice, 1g of dispersant, and beating for 1 hour at 0-3°C, add 2.4-disulfonic acid aniline solution (pre-configuration: 10g of 2.4-disulfonic acid aniline + 100g of water, add soda ash dry powder Adjust pH=5-7 by 3g, stir and dissolve to clear), the feeding speed shall be controlled as pH≤5.0. After the addition, keep at 5-15℃ and react, then slowly add 5g baking soda to adjust pH=5-7, and the reaction will reach the end ( 9-10 hours).

[0047] B, dicondensation reaction

[0048] Once the end of the reduction is reached, add 25g of Reactive Blue 198 color base to the first reduction solution, adjust the pH to 7-9 with 3g of soda ash, after the addition, heat up to 30-50℃ for reaction, and use 4g of soda ash to keep the pH during the reaction =7-9, until the end of the reaction (reaction for 1-2 hours).

[0049] E. Triple shri...

Example Embodiment

[0057] Example 2: Preparation of reactive brilliant blue of formula (1-2).

[0058] A, a shrinkage reaction

[0059] 8g of cyanuric chloride, 30g of water, 100g of ice, 1g of dispersant, and beating for 1 hour at 0-3°C, add 2.4-disulfonic acid aniline solution (pre-configuration: 10g of 2.4-disulfonic acid aniline + 100g of water, add soda ash dry powder Adjust pH=5-7 by 3g, stir and dissolve to clear), the feeding speed shall be controlled as pH≤5.0. After the addition, keep at 5-15℃ and react, then slowly add 5g baking soda to adjust pH=5-7, and the reaction will reach the end ( 9-10 hours).

[0060] B, dicondensation reaction

[0061] Once the end of the reduction is reached, add 25g of Reactive Blue 198 color base to the first reduction solution, adjust the pH to 7-9 with 3g of soda ash, after the addition, heat up to 30-50℃ for reaction, and use 4g of soda ash to keep the pH during the reaction =7-9, until the end of the reaction (reaction for 1-2 hours).

[0062] E. Triple shri...

Example Embodiment

[0069] Example 3: Several formulas were selected according to the characteristics of superior application performance, etc., as shown in Table 3. The application properties of the reactive dyes prepared in the examples of the present invention are shown in Table 4 and Table 5 below.

[0070] table 3

[0071] Serial number

[0072] Each reactive dye composition in Table 1 above is dry powder mixed in a mixing tank, or dissolved together and spray dried. There are other reactive dye compositions that are not listed one by one, but are included in the present invention.

[0073] Example 2: 100g cotton cloth, a low-alkali or alkali-free reactive brilliant blue dye obtained according to Example 1, 2% by weight of the fabric, in a dye bath containing 60g / l sodium sulfate and a bath ratio of 20:1 In the medium, adsorb for 30min at 60℃, add soda ash (dosage 15-20g / l) to fix for 45min. The dyed fabric is washed, soaped and dried. The obtained dyed cotton cloth has uniform color and sat...

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PUM

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Abstract

The invention relates to the field of active dye in the novel technology and especially relates to low-alkali or alkali-free active bright-blue dye and a preparation method thereof. The invention provides the low-alkali or alkali-free active bright-blue dye shown in the formula (1), and in the formula (1), M represents hydrogen or alkali metal. In dyeing, the low-alkali or alkali-free active bright-blue dye can be crosslinked and fixed to cotton fibers only by use of 1-3g/l of an alkali agent and even, the low-alkali or alkali-free active bright-blue dye can be crosslinked and fixed to the cotton fibers under the condition of dyeing bath pH of 7 and no alkali agent. The preparation method is a novel technology completely different from the traditional technology and is especially suitable for blended fabric dyeing. The low-alkali or alkali-free active bright-blue dye and the cotton fibers are bonded by covalent bonds and thus dry and wet fastness, solarization fastness and washing fastness are stable and good. Separated picolinic acid is a vitamin and has small influence on the environment.

Description

Technical field [0001] The invention relates to the field of reactive dyes in new material technology, particularly low-alkali or alkali-free reactive brilliant blue dyes and a preparation method thereof. Background technique [0002] Traditional reactive dyes need to be cross-linked and fixed with cotton fibers with an alkali agent. Generally, the alkali agent added is soda ash, the dosage is 20g / l, and the dry and wet fastness, light fastness, and washing fastness are low. [0003] Chlorine on the active group "monochlorotriazine" in traditional KE type or HE type reactive dyes is open. The traditional blending and interweaving dyeing process is a two-step polyester / cotton two-bath method, and a two-bath nylon / cotton two-bath method. Footwork, etc., consume a lot of energy, waste water, and labor. Summary of the invention [0004] The purpose of the present invention is to solve the above-mentioned problems. The present invention provides a group of low-alkali or non-alkali-type ...

Claims

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Application Information

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IPC IPC(8): C09B62/04
Inventor 康定孟胜锋秦杰峰罗章强杨军潘克存
Owner ZHEJIANG YIDE CHEM
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