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Mono-azo disperse dye compound and preparation method thereof

A technology for disperse dyes and compounds, applied in the directions of monoazo dyes, azo dyes, chemical instruments and methods, etc., can solve the problems of complex preparation process, insufficient alkali resistance, high cost, and achieve high color intensity and bright color. , The effect of low production cost

Inactive Publication Date: 2014-06-25
ZHEJIANG SHANYU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they have problems such as complex preparation process, high cost or insufficient alkali resistance.

Method used

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  • Mono-azo disperse dye compound and preparation method thereof
  • Mono-azo disperse dye compound and preparation method thereof
  • Mono-azo disperse dye compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The aniline compound shown in formula (2)

[0044]

[0045] In the general formula:

[0046] R 1 is hydrogen, C 1-6 Alkyl, halogen, nitro;

[0047] R 2 is hydrogen, C 1-6 Alkyl, halogen, nitro;

[0048] R 3 is hydrogen, C 1-6 Alkyl, halogen, nitro;

[0049] R 4 is hydrogen, C 1-6 Alkyl, halogen, nitro;

[0050] That is, having the definition of the above formula (1), diazotization is carried out with nitrite in hydrochloric acid medium, and the obtained diazonium salt is coupled with the basic compound shown in formula (3),

[0051]

[0052] where R 5 is C 1-6 Alkyl, R 6 is C 1-6 The alkyl group also has the definition of the above-mentioned general formula (1), and the mono-even disperse dye compound of the present invention represented by the formula (1) is obtained after filtration and separation by a filter press.

[0053]

Embodiment 2

[0055] Add 50 g of water, 15.8 g of sodium nitrite, and 24.2 g of 2,3-dimethylaniline represented by the formula (2a) into the cauldron, stir for 15 minutes, and set aside.

[0056]

[0057] Add 100g of water, 200g of crushed ice, and 70.6g (31%) of hydrochloric acid to the flask, slowly add the above-mentioned (2a) mixture under stirring, keep it warm for 1 hour after the addition, add 1g of sulfamic acid, and filter to obtain 2, 3-Dimethylaniline diazonium salt.

[0058] Add water 500g, methyl propyl pyridone 45.3g formula (3a) to the flask,

[0059]

[0060] Add 30g (30%) of liquid caustic soda, stir to dissolve, add 200g of small ice cubes, slowly add the above diazonium salt solution, after adding, stir and react for 1.5 hours, heat up to 80 degrees, keep warm for 1 hour, filter, wash with water , to obtain the product, the following formula (c1).

[0061]

Embodiment 3

[0063] Add 50 g of water, 15.8 g of sodium nitrite, and 24.2 g of 2,3-dimethylaniline represented by the formula (2a) into the cauldron, stir for 15 minutes, and set aside.

[0064]

[0065] Add 100g of water, 200g of crushed ice, and 70g (31%) of hydrochloric acid to the flask, slowly add the above (2a) mixture under stirring, keep it warm for 1 hour after the addition, add 1g of sulfamic acid, filter to obtain 2,3 -Dimethylaniline diazonium salt.

[0066] Add 500 g of water and 47.2 g of ethoxypropyl pyridone into the flask as shown in formula (3b),

[0067]

[0068]Add 30g (30%) of liquid caustic soda, stir to dissolve, add 200g of small ice cubes, slowly add the above diazonium salt solution, after adding, stir and react for 1.5 hours, heat up to 75-80 degrees, keep warm for 1 hour, filter , washed with water to obtain the product, as shown in the following formula (c2).

[0069]

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Abstract

The invention relates to a mono-azo disperse dye compound and a preparation method thereof. The mono-azo disperse dye compound is prepared by a method comprising the following steps: diazotizing an aniline compound in an acidic medium by use of nitrite or in a sulfuric acid medium by use of nitrosyl sulfuric acid and then coupling the diazotized aniline compound with a pyridine coupling component. The mono-azo disperse dye compound prepared by the method disclosed by the invention is used for dyeing of dacron / cotton fabrics and has a good application performance.

Description

technical field [0001] The invention relates to the technical field of disperse dyes, in particular to a monoazo disperse dye compound and a preparation method thereof. Background technique [0002] There are many kinds of monoazo disperse dyes in the prior art, such as C.I.Disperse Yellow114, C.I.Disperse Yellow119, C.I.Disperse Yellow211, C.I.Disperse Yellow241, etc. These dyes have bright shade, good fastness and high coloring rate. However, this dye has general alkali resistance and is not limited in single-color applications. It can easily cause a small amount of color deviation in the process of multi-component color matching. [0003] The application number is 200710068063.0 which provides a monoazo compound, its preparation method and its application. The application number is 201210013541.9 which provides a monoazo compound and its preparation method and application. However, they have problems such as complex preparation process, high cost or insufficient alkali ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/42C09B29/01D06P1/18D06P3/54
Inventor 牟忠岳邱健过介生杨杰胡效奎徐叙明
Owner ZHEJIANG SHANYU TECH CO LTD
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