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A kind of polyazo reactive dye compound and preparation method thereof

A technology of reactive dyes and compounds, which is applied in the field of polyazo reactive dye compounds and their preparation, can solve the problems of poor washing and rubbing fastness, unsatisfactory lifting power and dyeing depth, etc. Outstanding rubbing fastness, significant economic and social benefits, and excellent color fastness

Active Publication Date: 2019-09-03
ZHEJIANG KEYONG CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also many reports on developing polyazo novel reactive dyes in the prior art, such as published patents JPS60130652A, CN103342901 A, CN102876077 A, etc., due to the increase of conjugated systems, the dye exhaustion rate and color fixation rate have improved a lot, but the other Lifting power and depth of dye are still unsatisfactory, and fastness to washing and crocking is not good

Method used

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  • A kind of polyazo reactive dye compound and preparation method thereof
  • A kind of polyazo reactive dye compound and preparation method thereof
  • A kind of polyazo reactive dye compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]In a 1000ml beaker, add 150g of water and 36.1g of sulfonated para-ester (II-1), stir and beat for 1h, add 23g of 30% sodium nitrite solution at 10-15°C to carry out diazotization reaction for 2h, until the end point Finally, add sulfamic acid to destroy the excess nitrous acid, then add 15.1g m-ureidoaniline (II-2), control pH3~5 with baking soda, react at 10~15°C for 4~6h, and detect the disappearance of the diazonium salt. end. Adjust the pH of the reaction solution to 6.5-7 to make it completely dissolved, add 23g of 30% sodium nitrite solution, mix well, add the mixed solution to 30g of 30% hydrochloric acid and carry out diazotization reaction at 10-15°C 2 hour, add sulfamic acid to destroy excess nitrous acid after reaching the end point, obtain the first diazonium liquid, and set aside.

[0046] In a 1000ml beaker, add 150g of ice water and 28.1g of para-ester (Ⅲ-1), stir and beat for 1 hour, add 30g of 30% hydrochloric acid, and add 23g of 30% sodium nitrite so...

Embodiment 2

[0050] According to the preparation method described in Example 1, change 15.1g m-ureidoaniline into 15.0g m-acetamidoaniline to obtain the compound of formula (I-2), λmax=640nm in the aqueous solution, when applied to dyeing, the The fabric is dyed green.

[0051]

Embodiment 3～19

[0053]

[0054] According to the preparation method described in Example 1, the difference is that (II-1), (II-2) and (III-1) are replaced with the raw materials in the following Table 1 to obtain the dye compounds shown in the table, Can be used to dye fabrics green when applied to dyeing:

[0055]

[0056]

[0057]

[0058]

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Abstract

The invention discloses a polyazo reactive dye compound and a preparation method thereof. The compound is of a polyazo dye structure shown by formula (I), wherein in the formula (I), G1 and G2 are the structure shown by formula (II) or formula (III) respectively and not at the same time; in the formulas (I) to (III), R1, R2, R5 and R6 are hydrogen, -SO3M3, C1-C4 alkyl or C1-C4 alkoxy respectively; R3 is hydrogen or C1-C4 alkoxy; R4 is -NH2 or C1-C4 alkyl; Y1 and Y2 are -CH=CH2 or -C2H4OSO3M4 respectively; and M1 to M4 are hydrogen or alkali metal respectively. When the polyazo reactive dye compound disclosed by the invention is applied to the printing and dyeing of a fiber material, the build-up property and deep dyeing property are good, the color fixation rate and exhaustion rate are high, the color fastness is excellent, and particularly the washing resistance and rub fastness are outstanding; during dyeing, the dependency on alkali is good, and the alkali dosage can be reduced to 1 / 3 of conventional dosage; and the polyazo reactive dye compound is suitable for the dyeing at a low bath ratio, and the economic and social benefits are remarkable.

Description

[0001] (1) Technical field [0002] The invention relates to a polyazo reactive dye compound and a preparation method thereof. [0003] (2) Background technology [0004] Reactive dyes have become the most important type of dyes for textile dyeing such as cellulose fibers due to their bright color, complete chromatogram, simple application, low cost and good fastness. Soda ash is used as a color-fixing agent during dyeing, and the dosage is large (generally 15g / L). After dyeing, a large amount of water is needed to wash away the residual alkali agent, which consumes water resources and increases sewage discharge. Therefore, in recent years, the research on reducing the amount of alkali agent used in dyeing with reactive dyes has become an important topic in domestic research. Researchers and others use substitute alkali instead of soda ash to fix the color of reactive dyes, reducing the amount of alkali agent, but there is still a certain gap between substitute alkali and soda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/513D06P1/384D06P3/66D06P3/24D06P3/52
Inventor 王专朱涛李世华刘华玮李金洋
Owner ZHEJIANG KEYONG CHEM CO LTD
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