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Polyazo reactive dye compound and preparation method therefor

A reactive dye and compound technology, applied in the field of polyazo reactive dye compounds and their preparation, can solve the problems of poor washing and rubbing fastness, unsatisfactory lifting force and dye depth, etc. Outstanding rubbing fastness, significant economic and social benefits, and good dependence

Active Publication Date: 2015-12-30
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 the development of polyazo novel reactive dyes in the prior art, such as the published patents JPS60130652A, CN103342901A, CN102876077A, etc., due to the increase of the conjugated system, the dye exhaustion rate and color fixation rate have improved a lot, but its lifting power The dyeing and depth are still unsatisfactory, and the washing and rubbing fastness are not good

Method used

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  • Polyazo reactive dye compound and preparation method therefor
  • Polyazo reactive dye compound and preparation method therefor
  • Polyazo reactive dye compound and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]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, after reaching the end point Add sulfamic acid to destroy 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 diazonium salt as the end point . 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 for 2 hours After reaching the end point, add sulfamic acid to destroy excess nitrous acid to obtain the first diazonium solution for later use.

[0041] 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% sodi...

Embodiment 2

[0045] 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.

[0046]

Embodiment 3～19

[0048]

[0049] 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:

[0050]

[0051]

[0052]

[0053]

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Abstract

The invention relates to a polyazo reactive dye compound and a preparation method therefor. The compound has a polyazo dye structure represented by a formula (I) shown in the description, wherein in the formula (I), G1 and G2 respectively are a structure represented by a formula (II) shown in the description or a structure represented by a formula (III) shown in the description independently and are the structure represented by the formula (II) shown in the description or the structure represented by the formula (III) shown in the description when G1 and G2 are different, among the formulae (I) to (III), R1, R2, R5 and R6 respectively are H, -SO3M3, C1-C4 alkyl or C1-C4 alkoxy independently; R3 is H or C1-C4 alkoxy; R4 is -NH2 or C1-C4 alkyl; Y1 and Y2 respectively are -CH=CH2 or -C2H4OSO3M4 independently; M1 to M4 respectively are or alkali metal independently. When the polyazo reactive dye compound provided by the invention is applied to the printing and dyeing of fibrous materials, the lifting force and deep dyeing property are good, the degree of fixation and degree of exhaustion are high, color fastness of various items is excellent, particularly the water washing resistance and rubbing fastness are outstanding, the alkali dependency is good during dyeing, the consumption of alkali can be lowered to 1 / 3 the conventional consumption, and the polyazo reactive dye compound is applicable to low-bath-ratio dyeing, so that the economic and social benefits are remarkable.

Description

(1) Technical field [0001] The invention relates to a polyazo reactive dye compound and a preparation method thereof. (2) Background technology [0002] 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 ash in terms o...

Claims

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Application Information

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Patent Type & Authority Applications(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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