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Asymmetricazo-based metal complex dye, preparation thereof and acidic black dye composition containing the same

A technology of nitrogen-based acidic and complex dyes, which is applied in the field of novel asymmetric azo-based metal complex dyes and their preparation, and acid black dye compositions, and can solve the problems of no improvement in performance, etc.

Inactive Publication Date: 2003-03-26
DAEKWANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the properties of the dye mixtures disclosed in these documents are greatly dependent on the black dye component, no improvement in properties other than color expressiveness can be expected without improvement in the properties of the black dye used as a base

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Under stirring, 29.5 parts of 1-diazo-2-naphthol-6-nitro-4-sulfonic acid, 100 parts of water and 100 parts of ice were mixed for 30 minutes at 10°C. Add 2 parts of zinc chloride (ZnCl 2 ), and then use 20 parts of sodium acetate (CH 3 COONa) adjust the pH of the mixture to 3.0 by solution in 100 parts of water.

[0035] 15 parts of 2-naphthol (β-naphthol) was added to 150 parts of 80°C water, and it was completely dissolved with 10N NaOH, and then 150 parts of ice was added to cool the solution to 30°C. The previously prepared mixture was added to the solution to mix, and the pH was adjusted to 10, and then they were subjected to a coupling reaction at 40°C for 5 hours with stirring. The product solution was dialyzed in a saturated saline solution to obtain the monoazo compound represented by the following formula 15a, which was needle-shaped black crystals, which were filtered with suction and washed with 5% sodium chloride solution and dried at about 50°C under vacuum . I...

Embodiment 2

[0039] It was carried out in the same manner as in Example 1, except that 25 parts of 1-diazo-2-naphthol-4-sulfonic acid were used instead of 1-diazo-2-naphthol-6-nitro- 4-sulfonic acid, a compound represented by the following formula 16a and a chromium complex represented by the following formula 16b are obtained, and finally a complex represented by the following formula 16c is prepared from the complex. Applying this dye to nylon or polyamide fibers produces a blue-black color. Formula 16a Formula 16b Formula 16c

Embodiment 3-25

[0041] It was carried out in the same manner as in Example 1, except that the monoazo compound and disazo compound listed in Table 1 were used. The obtained dyes are applied to nylon or polyamide fibers, and the results are shown in Table 1. Table 1

[0042] Measurements of the dyes obtained in these examples showed that their fastnesses were the same as those of the dyes prepared in Examples 1 and 2.

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PUM

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Abstract

Disclosed are a novel asymmetric azo-based metal complex dye which exhibits superior high color depth a and excellent fatness, preparation thereof, and an acidic black dye composition comprising the same.

Description

Invention field [0001] The present invention relates to a novel asymmetric azo metal complex dye. Specifically, the present invention relates to a novel asymmetric azo metal complex dye with deep color and excellent fastness and a preparation method thereof. The present invention also relates to an acid black dye composition containing such asymmetric azo metal complex dye as a main component. Background of the invention [0002] Various black dyes have been developed for dyeing polyamide fibers such as nylon 6 and nylon 66. The black dye used for dyeing polyamide fiber is represented by the acid black dye represented by the following formula 13: formula 13 [0003] However, when the amount of the above dyes is 5-7% o.w.f., most of the dyes cannot be fixed, resulting in poor washing fastness, water fastness, and sweat fastness. [0004] Another problem with this dye is that it requires multiple rinsing of the dye to improve its fastness, which requires more time and expense to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B45/26C09B67/22
CPCC09B45/26C09B67/0046
Inventor 罗钟柱
Owner DAEKWANG CHEM IND
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