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Novel composite active black dye and application

A reactive black and dye technology, applied in the field of compound dyes, can solve the problems of increasing production costs and unqualified dyed finished products, and achieve the effects of improving alkali resistance, reducing dye hydrolysis, and improving color fastness

Active Publication Date: 2017-05-17
ZHEJIANG JINGGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Reactive dyes are rapidly hydrolyzed under alkaline high-temperature conditions. When dyeing nylon, hydrolyzed dyes have good coloring rate at high temperatures, but they cannot be fixed on nylon. Repeated staining in this way will stain the white stripes between nylon and cotton and result in unqualified dyed products. Although some printing and dyeing factories use anti-staining soaping agents to wash off part of the hydrolyzed dyes, this will undoubtedly increase production costs. , cannot fundamentally solve such problems

Method used

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  • Novel composite active black dye and application
  • Novel composite active black dye and application
  • Novel composite active black dye and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The synthesis of embodiment 1 component A

[0031] (1) Sulfonated para-ester diazo

[0032] Accurately weigh 36.1 grams of sulfonated para-ester in a 1000mL four-neck flask, grind on ice for 30 minutes, observe the beating effect of sulfonated para-ester, add 12.78 grams of 30% hydrochloric acid after the particles are uniform and fine, stir for 10 minutes, and pour into it 23.23 g of 30% sodium nitrite was added dropwise, the rate of addition was fast and then slow, after the addition of sodium nitrite was completed, the temperature was controlled at 8-10°C, and the reaction was stirred for 1-1.5 hours to obtain sulfonated para-ester diazonium salt.

[0033] (2) Primary coupling

[0034] When the end point of sulfonated para-ester diazonium is reached, excess sodium nitrite is eliminated with sulfamic acid, a little crushed ice is added to the diazonium salt, and 29.6 grams of 2,4-diamino-β-hydroxyethylsulfone The sulfate ester solid powder is quickly put into the su...

Embodiment 2

[0041] Example 2 Component B 1 Synthesis

[0042] (1) Para-ester diazo

[0043] Accurately weigh 56.2 grams of para-ester in a 1000mL beaker, grind and beat on ice for 30 minutes, add 25.56 grams of 30% hydrochloric acid, stir for 10 minutes, add 46.46 grams of 30% sodium nitrite dropwise, the dropping speed is fast first and then slow After adding sodium nitrite, control the temperature at 3-5°C and stir for 1-1.5h to obtain the para-ester diazonium salt.

[0044] (2) Primary coupling

[0045] When the para-ester diazonium end point is reached, use sulfamic acid to eliminate excess sodium nitrite, add a little crushed ice to the diazonium salt, quickly put 33.28 grams of H acid powder into the para-ester diazonium salt, and control the temperature 10-15°C, stirred for 5-8h.

[0046] (3) Secondary coupling

[0047] Once the end point of the coupling is reached, adjust the pH to 5.5-6.0 with the amount of baking soda, control the temperature at 8-12°C, and stir for 3-4 hou...

Embodiment 3

[0050] Example 3 Component B 2 Synthesis

[0051] (1) para-ester diazo

[0052]Accurately weigh 28.1 grams of para-ester in a 1000mL beaker, grind and beat on ice for 30 minutes, add 12.78 grams of 30% hydrochloric acid, stir for 10 minutes, add 23.23 grams of 30% sodium nitrite dropwise, the dropping speed is fast first and then slow After adding sodium nitrite, control the temperature at 5-8°C and stir for 1-1.5h to obtain the para-ester diazonium salt.

[0053] (2) Primary coupling

[0054] When the para-ester diazonium end point is reached, use sulfamic acid to eliminate excess sodium nitrite, add a little crushed ice to the diazonium salt, quickly put 32.42 grams of H acid powder into the para-ester diazonium salt, and control the temperature 10-15°C, stirred for 5-8h.

[0055] (3) 2,5-Dimethoxy para-ester diazonium salt

[0056] Accurately weigh 34.78 grams of 2,5-dimethoxy-para-ester in a 500mL beaker, grind on ice for 30 minutes, add 13.04 grams of 30% hydrochlori...

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PUM

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Abstract

The invention relates to novel composite active black dye, which comprises an ingredient A shown as a formula (I), an ingredient B shown as a formula (II) and an ingredient C shown as a formula (III), a formula (IV) or a formula (V), wherein Y is CH=CH2, CH2CH2OH, C2H4OSO3H, C2H4OSO3Na or C2H4Cl; R1 to R3 and R1' to R3' mutually independently represent hydrogen, hydroxyl, methoxyl or methyl. The composite active black dye has the advantages that the color fixing rate of the active dye and the dyeing firmness of textile are improved; the dyeing production cost is effectively controlled. The formulae are shown in the specification.

Description

technical field [0001] The invention relates to a composite dye, in particular to a novel composite reactive black dye and its application. Background technique [0002] Currently on the market, reactive black dyes compounded from navy blue components, orange components and red components mainly have low color fixation rate, poor color fastness, easy hydrolysis of dyes in the dyeing process, low utilization rate, and insufficient blackness of dyes. And other issues have brought severe challenges to printing and dyeing enterprises. [0003] Chinese invention patent ZL98106332.2 discloses a dye of reactive black WNN series, which has been promoted for a long time and has occupied a considerable market share. The orange component in the dye has a strong affinity with nylon. When nylon-cotton blended dyeing, the dyeing rate on nylon is higher, which reduces the dye exhaustion rate of cotton component, especially in nylon-cotton one-bath dyeing. , so that the dye utilization ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/36C09B67/24D06P1/384D06P3/66
CPCC09B67/004C09B67/0059C09B67/0072D06P1/384D06P3/008D06P3/666
Inventor 王国林张薇赵强
Owner ZHEJIANG JINGGUANG IND