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Azo-group metal complex dye, and its preparing method

A technology of complex dyes and base metals, used in azo dyes, complex metal compounds of azo dyes, organic dyes, etc. Excellent light and wet fastness, high color fixing rate, simple and reliable dyeing process

Inactive Publication Date: 2007-01-10
ZHEJIANG LONGSHENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current conventional acid black dyes cannot well meet the above requirements, mainly in: poor color fixation rate, resulting in poor water resistance, washing resistance, perspiration fastness, etc. Ester fibers cannot be colored in dark black

Method used

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  • Azo-group metal complex dye, and its preparing method
  • Azo-group metal complex dye, and its preparing method
  • Azo-group metal complex dye, and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the first step, the 6-nitro-1,2,4-acid oxygen body is coupled with 2-naphthol:

[0023] Add 20 grams of 6-nitro-1,2,4-acid oxygen, as shown in (VI-a), add 60 ml of water to make a slurry, add ice and cool to 8 ° C, and adjust the pH of the feed solution with 10 ml of 30% liquid caustic soda Values ​​up to Congo red do not appear blue. Add 10.5 grams of 2-naphthol to 7ml of water, add 8.5ml of 30% liquid caustic soda, heat up to 80°C to dissolve 2-naphthol, cool the solution to 30°C, and then flow into the above 6- In the nitro-1,2,4-acid oxygen body solution, under vigorous stirring, raise the temperature to 40°C within 1 hour, adjust the pH value to 8.5 with hydrochloric acid to carry out the coupling reaction, after the reaction, filter, wash with water, and dry , 26 grams of dry product of the coupled compound shown in the following formula (VII-a) were obtained.

[0024] In the second step, the coupling compound prepared in the first step is complexed with chro...

Embodiment 2

[0035] Prepare according to the same method as in Example 1, except that the following formula (VI-b) is used instead of the above (VI-a), and the monoazo compound of formula (VII-b) and formula (II-b) are successively prepared. Chromium complex, azo metal complex acid black dye of formula (I-b).

[0036]

[0037]

Embodiment 3～10

[0039] According to the preparation method of Example 1, using the monoazo complexes and disazo compounds listed in Table 1 below, azo metal complex acid black dyes with corresponding structures were prepared.

[0040] Example

monoazo complex

Azo compounds

[0041]

[0042]

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PUM

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Abstract

This invention relates to a dye of azodenzene metal complex, such as the formula (I) below, and its preparative method, which includes the following steps: compounds of formula (II) and (III) are mixed together to be stirred and reacted when pH is adjusted to 6.0-10.0 and temperature rises to 60-90 deg.C. then the product is obtained after treatment. The acidic black metal complex dyes suit for wool, as well as its blends, silk and nylon. The process is simple and reliable, which is particularly suitable for wool fiber and strip low-temperature dyeing. The efficiency of dyeing is high and it can bear sun and humidity, the textiles in cars are suitable as well.

Description

(1) Technical field [0001] The invention relates to an azo-based metal complex dye and a preparation method thereof. (2) Background technology [0002] Acid complex black is mainly used in the dyeing and printing of wool, silk and nylon, and can be used alone or in color matching applications. According to EU regulations: when acid metal complex dyes are used for dyeing related fibers, the amount of dye liquor discharged into wastewater for treatment should be less than 7%, that is, the coloring rate of metal complex dyes should exceed 93%. The current conventional acid black dyes cannot well meet the above requirements, mainly in: poor color fixation rate, resulting in poor water resistance, washing resistance, perspiration fastness, etc. Ester fibers cannot be colored in dark black. Chinese patent ZL01802267.7 discloses an asymmetric azo-based metal complex dye, which has excellent high dyeing depth and fastness. (3) Contents of the invention [0003] The purpose of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B45/26
Inventor 阮伟祥陈建平郑伟良
Owner ZHEJIANG LONGSHENG GROUP
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