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Benzoisothiazole compound, preparation and uses and disperse dyes composition

A technology of benzisothiazole and dye composition, which is applied in the direction of azo dyes, organic dyes, monoazo dyes, etc., and can solve the problem of not bright enough color and luster

Inactive Publication Date: 2007-07-11
ZHEJIANG LONGSHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the 1950s, azo dyes basically belonged to benzene and naphthalene compounds. Light colors belonged to simple azo dyes, and dark colors belonged to disazo or polyazo dyes with complex processes. not bright enough

Method used

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  • Benzoisothiazole compound, preparation and uses and disperse dyes composition
  • Benzoisothiazole compound, preparation and uses and disperse dyes composition
  • Benzoisothiazole compound, preparation and uses and disperse dyes composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 80g of sulfuric acid (98%) and 80g of 20% nitrosylsulfuric acid into the three-necked flask, stir for 30-60min, control the temperature in an ice-water bath at 0-5°C, and dissolve 0.2mol (39g) of 3 within 2 hours under stirring. -Amino-5-nitro-2,1-benzisothiazole was added to the above-mentioned three-necked flask, and the reaction was kept for about 5 hours, and the diazotization was completed.

[0029] Add 21.8g of m-aminophenol, 86g of methyl acrylate and 25g of acetic acid into the three-necked flask, heat to 90-95°C, and react for 19 hours. At -35°C, a solution of 3-hydroxy-N,N-dimethoxycarbonylethylaniline was obtained.

[0030] Take the above-mentioned 3-hydroxy-N, N-dimethoxycarbonyl ethylaniline solution, add 300 g of water, 30 g of sulfuric acid (98%), and 2 g of sulfamic acid and an emulsifier, and stir in an ice-water bath with a controlled temperature of 0 to 10 ° C After beating, slowly add the above prepared diazonium solution dropwise later to carry...

Embodiment 2

[0033] According to the preparation method described in Example 1, the difference is that 3-hydroxyl-N, N-dimethoxycarbonylethylaniline is used in an equimolar amount of 3-hydroxyl-N, N-diethoxycarbonylethyl By replacing aniline, the blue dye monomer compound of the following formula (1-b) can be obtained.

[0034] Wherein, 3-hydroxyl-N, N-diethoxycarbonylethylaniline is obtained through the following steps: add 21.8g m-aminophenol, 100g ethyl acrylate and 25g acetic acid, 5g sodium bromide in a three-necked flask, heat to 90 -95°C, after reacting for 19 hours, at this temperature, distill off excess ethyl acrylate and acetic acid under reduced pressure, and lower the temperature to 30-35°C to obtain 3-hydroxy-N,N-diethoxycarbonylethylaniline solution .

[0035]

Embodiment 3

[0037] According to the preparation method described in Example 1, the difference is that 3-hydroxyl-N, N-dimethoxycarbonylethylaniline is used in an equimolar amount of 3-hydroxyl-N, N-dimethoxycarbonylmethyl Substituting aniline, the blue dye monomer compound of the following formula (1-C) can be obtained.

[0038] Wherein, 3-hydroxyl-N, N-dimethoxycarbonylmethylaniline can be obtained through the following steps: add 21.8g m-aminophenol, 75g methyl chloroacetate and 28g sodium carbonate, 5g sodium bromide in there-necked flask, Heat to 115-135°C, react for 5 hours, at this temperature, distill off excess methyl chloroacetate under reduced pressure, cool down to 30-35°C, add 150g of acetic acid to get 3-hydroxy-N,N-dimethoxy Carbonylmethylaniline solution.

[0039]

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Abstract

The invention discloses a benzo-isothiazole compound and making method and application with structure as formula (I) as well as dye composition with benzo-isothiazole compound, which can make dispersing blue dye through microparticle process, spraying and drying.

Description

(1) Technical field [0001] The invention relates to a dye monomer compound: a benzisothiazole compound, its preparation and application, and a dye composition composed of the benzisothiazole compound. (2) Background technology [0002] Azo dyes occupy an important position in dye chemistry due to their complete chromatogram and low cost, and have a trend of continuous development. Its biggest advantage lies in its simple reaction, large structural changes, and wide application range. Before the 1950s, azo dyes basically belonged to benzene and naphthalene compounds. Light colors belonged to simple azo dyes, and dark colors belonged to disazo or polyazo dyes with complex processes. Not bright enough. Since BASF discovered in 1968 that the dark color effect of 3-amino-5-nitro-2,1-benzisothiazole is greater than that of 2-amino-6-nitrobenzothiazole and 2-amino-5-nitrothiazole, It has promoted the research on the manufacture of blue disperse dyes with 3-aminobenzisothiazole a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D275/04C09B29/045
Inventor 阮伟祥欧其高怀庆陈苏战
Owner ZHEJIANG LONGSHENG GROUP
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