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Azo compound and preparation method, intermediate and application thereof

A technology of azo compounds and compounds, applied in the field of azo compounds, can solve the problems of unsatisfactory color fixation rate of reactive dyes and achieve high color fixation rate

Inactive Publication Date: 2017-09-08
SHANGHAI ANOKY GRP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the fixation rate of existing reactive dyes is still unsatisfactory and other defects, therefore, a kind of azo compound, its preparation method, intermediate and application are provided, and the azo compound can be used in Color fixing at lower temperature and less amount of alkali agent, and high color fixing rate

Method used

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  • Azo compound and preparation method, intermediate and application thereof
  • Azo compound and preparation method, intermediate and application thereof
  • Azo compound and preparation method, intermediate and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0073] Embodiment 1 prepares compound 1

[0074]Under stirring, add 15.2g (0.05mol) of amino acid C and 150g of water into a 250mL three-necked flask, adjust the pH to 4.5-5.0 with hydrochloric acid, add ice to cool down to 10°C, add 15.2g of 30% hydrochloric acid and 35% sodium nitrite Solution 10g, temperature maintained at 15 ° C, stirred for 0.5 hours, added sulfamic acid to consume excess sodium nitrite. Add 9.5 g (0.0525 mol) of 3-amino-4-methoxyacetanilide, adjust the pH to 4.5-5.0 with soda ash, stir at 5°C for 2 hours, slowly raise the temperature to 75°C, let stand, remove the upper layer of oil, Add salt corresponding to 25% of the total volume, stir, and filter with suction to obtain the coupling product filter cake.

[0075] Add 100mL of water to a 250mL beaker, raise the temperature to 40°C, add the above filter cake, adjust the pH to 6.8-7.0 with soda ash, dissolve it, stir for 2 hours, add 0.5% of the total volume of activated carbon and 0.5% of calcium carbon...

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Abstract

The invention discloses an azo compound and a preparation method, an intermediate and application thereof. The invention provides an azo compound of a formula 1 shown in the specification; color fixing of the azo compound can be realized at a relatively low temperature with a relatively small dosage of an alkaline agent, and the color fixing rate is high.

Description

technical field [0001] The present invention relates to an azo compound, its preparation method, intermediate and application. Background technique [0002] Reactive dyes are an important class of synthetic dyes, which are fixed through the chemical reaction between the reactive groups in the chemical structure and the cellulose fibers, so they are also called reactive dyes (Reactive Dyes). With people's increasing requirements for wearing comfort and ecological health, more and more textile products are concentrated on cotton and cotton-type fabrics, and the demand for reactive dyes is also increasing year by year, becoming one of the most widely used synthetic dyes. [0003] Disclosed in CN103030990A is a dyestuff with the following structure: [0004] [0005] The dye can be fixed at a lower temperature and less amount of alkali agent, and the color fixing rate is measured according to the standard of GB / T 2391-2006. The color fixing rate reaches 90%, but there is sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/50C07D251/44C09B62/51
CPCC07D251/50C07D251/44C09B62/51
Inventor 夏先广韩伟鹏朱镇燕美芳杨建韩莹莹
Owner SHANGHAI ANOKY GRP