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Azo type heterocyclic blue dispersion dyes

A technology of disperse dyes and heterocycles, used in azo dyes, monoazo dyes, organic dyes, etc., can solve the problems of poor dyeing performance, sensitivity to pH value of dyeing bath, etc., achieve excellent fastness and dyeing performance, environmental protection The effect of good sex and high color power

Inactive Publication Date: 2008-03-19
ZHEJIANG HUIDELONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The dye is dark blue and has poor dyeing properties, especially sensitive to the pH of the dyeing bath

Method used

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  • Azo type heterocyclic blue dispersion dyes
  • Azo type heterocyclic blue dispersion dyes
  • Azo type heterocyclic blue dispersion dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dissolve 19.5 grams of 3-amino-5-nitro-2,1-benzoisothiazole (0.1 mole) in 50 milliliters of sulfuric acid and stir to dissolve, control at 10-15 ° C, dropwise add 32.4 grams of 40% nitrous Acyl sulfuric acid (0.102 mol) was kept at 10-15°C for 6 hours to obtain diazonium solution. At the same time, 24.6 grams of N-isopropyl N-(β-cyanoethoxyethyl)-m-toluidine (0.1 mol) was dissolved in 10 ml of sulfuric acid and 300 ml of water to form a coupling component, and an appropriate amount of crushed ice was added. Drop below 0°C, then slowly drop the diazo solution into the coupling solution, control the reaction at 0-5°C until the diazo component disappears, filter, wash with water until neutral, exhaust, and dry to obtain dye 36-38 grams, dyed polyester fiber is brilliant blue.

Embodiment 2

[0019] The dry product dye obtained in Example 1 is mixed with the dispersant in a ratio of: dye (dry product): dispersant MF: sodium lignosulfonate: water=1: 1: 1: 6.5 sand milled to a particle size of less than 1U , dried to obtain commercial dyes. Add 0.1 gram of the above-mentioned commercial dye to a dye vat containing 200 ml of water, add 5 grams of polyester fabric after the dye is completely dissolved, seal the dye vat and put it into the dyeing machine, slowly raise the temperature, rise to 130°C for about 30 minutes and keep it warm for 45 minutes. After cooling down, the dyed sample was taken out, and it was bright blue after soaping.

Embodiment 3～22

[0021] In each embodiment, the amount of 3-amino-5-nitro-2,1-benzoisothiazole is 0.1 mole, and the ratio (mole) and operation of other materials are the same as in Example 1 to obtain a series of heterocyclic Blue disperse dye. The structure of each coupling component, see below

[0022] surface:

[0023] Example

[0024] Example

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PUM

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Abstract

The invention provides a class of heterocyclic blue disperse dye and mixed dyes thereof, wherein the general formula of the dye is the formula at right, in the general formula: R1 is hydrogen, C1-4alkyl or C1-4alkoxy; R2, R4 is C1-4 saturated linear or branched alkane; R2 and R4 are the same or different; R3 is hydrogen, hydroxy, C1-4 alkoxy, or phenoxy; R5 is hydrogen, C1-4alkoxy, cyanoethyl or phenoxy; R3 and R5 are the same or different. The preparation of the dye includes that heterocyclic diazo component is diazotized, followed by reaction with different coupling components to get brilliant blue disperse dye. The dye can have a single structure, and also be the dye with mixed structure directly prepared. The class of dyes can give rich and deep color and has high lifting force, and good dye-uptake property, which has the same results of brilliant color light for polyester cellulose dying in acid or basic dye bath. The invention also can dye polyamide, polyurethane and cellulose acetate, and ultra-fine and blended fabric thereof.

Description

technical field [0001] The present invention relates to the field of fine chemical industry, a series of bright heterocycles prepared by coupling 3-amino-5-nitro-2,1-benzisothiazole with specific substituted aromatic amines as diazo components Blue disperse dye. Background technique [0002] Common azo-type blue disperse dyes are mostly dark blue, and the shade is not bright. A class of blue disperse dyes with dicyano groups introduced into the diazo component, although the brilliance has been improved, the dyeing performance is not good. And the synthesis reaction must be carried out in an organic solvent using highly toxic cyanide. Not only the cost is high, but also it will cause serious harm to the environment. [0003] The disperse dye relevant to the present invention is C.I. disperse blue 148, and its structural formula is: [0004] [0005] The dye is dark blue and has poor dyeing performance, especially sensitive to the pH value of the dyeing bath. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/045C09B29/36C09B67/38
Inventor 王喆
Owner ZHEJIANG HUIDELONG CHEM
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