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Brown polyazo reactive dye compound, and preparation method and application thereof

A technology of reactive dyes and compounds, applied in the printing and dyeing of cellulose fibers, polyazo brown reactive dye compounds and its preparation field, can solve the problems of easy precipitation of orange components, poor dyeing stability, color spots, etc., and achieve Excellent color fixing rate, good bonding stability and low production cost

Active Publication Date: 2015-12-23
ZHEJIANG LONGSHENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are few varieties of brown reactive dyes, and they are usually compounded by two or three colors. However, due to the different solubility of the monomers of the compounded dyes, the dyeing stability is poor, especially when alkali is added during the dyeing process. When the color is changed, the orange component is easy to precipitate out, causing stains and blooms
Patent CN201310125082A discloses a KN-type reactive brown monochromatic dye. By adjusting the functional group of the chromophore, the goal of a single-component brown chromophore is achieved, and the application performance requirement of the color fixation rate ≥ 85% is met, but its There is still room for improvement in terms of color fastness, dyeing rate and color fixation rate

Method used

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  • Brown polyazo reactive dye compound, and preparation method and application thereof
  • Brown polyazo reactive dye compound, and preparation method and application thereof
  • Brown polyazo reactive dye compound, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Weigh 14.6g (0.021mol,) of sulfonated para-ester with a content of 53%, add water and beat for 0.5h, slowly add 5.06g of 30% sodium nitrite solution dropwise under the conditions of pH 0.8-1.4 and temperature 14-17°C (0.022mol) for diazonium reaction, every 0.5h to judge whether sodium nitrite is excessive, that is, whether the potassium iodide test paper is slightly blue. After 2 hours of reaction, the amino reagent does not show yellow at the end of the reaction;

[0034] 2. Weigh 4.6 g (0.02 mol) of metaurea with a content of 65%, slowly add it to the diazo component prepared in step 1, adjust the pH to 4.5-5.0, perform coupling reaction at 10-15°C for 4 hours, and measure The reaction ends when the purity of the liquid phase reaches 80%;

[0035] 3. Adjust the pH of the coupling solution obtained in step 2 to 6.5-6.7, add 5.06g (0.022mol) of 30% sodium nitrite solution and stir evenly, and slowly add 5.9g (0.05mol) of 31% ice in 40-60min hydrochloric acid, and ...

Embodiment 2～10

[0041] According to the preparation method in Example 1, using different diazo and coupling components to prepare, the structures shown in the following table 1 can be obtained respectively:

[0042] Table 1

[0043]

[0044]

Embodiment 11～22

[0046] According to the preparation method in Example 1, the structures shown in the following table 2 can be prepared respectively by changing the coupling sequence and raw materials:

[0047] Table 2

[0048]

[0049]

[0050]

[0051] Dyeing experiment:

[0052] Choose the reactive brown dye compound dry product that embodiment 1-22 makes among the present invention, be dissolved in water respectively, add sodium sulfate (50g / L) and be mixed with dye liquor. The dyeing concentration is 4% (the weight of the dye to the cloth, such as 100 parts of cotton cloth requires 4 parts of dye), the bath ratio is 1:10 (the weight of the cloth (g): the volume of the dyeing solution (ml)), put it into the cotton cloth at 60 ° C for 30 minutes, Add alkali (sodium hydroxide 15g / L, sodium carbonate 10g / L) to fix the color for 45 minutes, and the dyed fabric is washed with water, soaped and dried to obtain brown dyed fabric. According to GB / T3921-2008 and GB / T3920-2008, the soapin...

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Abstract

The invention discloses a brown polyazo reactive dye compound, and a preparation method and an application thereof. The structure of the brown reactive dye compound is represented by general formula (I), one of R1 and R2 in the formula (I) is selected from groups represented by general formula (II), the other one of the R1 and R2 is selected from groups represented by general formula (III), and R3 in the formula (II) is H, -OCH3 or -SO3M; -SO2OCH2CH2OSO3M is positioned in the para-position or the meta-position of an azo group; and in the formula (III), R4 is -NHCONH2 or -NHCOCH3, R5 is H or -OCH3, R6 is H, -OCH3 or -SO3M, and M1 and M2 respectively and independently are H or alkali metals. The dye compound is suitable for printing and dyeing cellulose fibers, and has the advantages of excellent dye uptake, high color fixing rate, excellent launderability, excellent friction resistance, excellent color fastness, and good combustion stability with the fibers.

Description

(1) Technical field [0001] The invention relates to a reactive dye compound, in particular to a polyazo brown reactive dye compound and its preparation method and application in cellulose fiber printing and dyeing. (2) Background technology [0002] There are few varieties of brown reactive dyes, and they are usually compounded by two or three colors. However, due to the different solubility of the monomers of the compounded dyes, the dyeing stability is poor, especially when alkali is added during the dyeing process. When the color is changed, the orange component is easy to precipitate, causing stains and flowers. Patent CN201310125082A discloses a KN-type reactive brown monochromatic dye. By adjusting the functional group of the chromophore, the goal of a single-component brown chromophore is achieved, and the application performance requirement of the color fixation rate ≥ 85% is met, but its There is still room for improvement in terms of color fastness, dye uptake and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/513D06P1/384D06P3/66
CPCC09B62/513D06P3/685
Inventor 王专高怀庆邱雯
Owner ZHEJIANG LONGSHENG GROUP
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