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Azo disperse dye compound as well as synthesis method and dyeing application thereof

A technology for dye compounds and disperse dyes, applied to azo disperse dye compounds and the fields of their synthesis and dyeing applications, can solve the problems of insufficient dye depth, poor dye fastness, poor homochromaticity of polyester and ammonia, and achieves wide pH tolerance, The effect of less discharge of three wastes and good dye depth

Active Publication Date: 2017-07-25
苏州科法曼化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is applied to polyester-spandex fabrics and ultra-fine polyester fibers, problems such as poor polyester-spandex homochromaticity, insufficient dyeing depth, and poor dyeing fastness appear, and it is difficult to meet the current printing and dyeing requirements.

Method used

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  • Azo disperse dye compound as well as synthesis method and dyeing application thereof
  • Azo disperse dye compound as well as synthesis method and dyeing application thereof
  • Azo disperse dye compound as well as synthesis method and dyeing application thereof

Examples

Experimental program
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preparation example Construction

[0059] The preparation method of described azo disperse dye compound preferably comprises the steps:

[0060] (1) The arylamine compound represented by the general formula (4) is subjected to a diazotization reaction in a diazotization reagent to obtain a diazonium salt, and the diazotization reagent refers to a mixed solution of hydrochloric acid and sodium nitrite or sulfuric acid Mixed solution with nitrosyl sulfuric acid;

[0061]

[0062] In the general formula (4), D is as described above;

[0063] (2) Coupling the diazonium salt obtained in step (1) with the compound shown in general formula (5) to obtain the described azo disperse dye compound;

[0064]

[0065] R in general formula (5) 1 , R 2 , R 3 , R 4 , n as mentioned above.

[0066] When the azo disperse dye compound is applied to dyeing, in order to meet the application requirements, the azo disperse dye compound and auxiliary agents, water or other wetting agents are often micronized with a sand mill ...

Embodiment

[0072] This example includes the synthesis example of the azo disperse dye compound of the present invention, the preparation example of the azo disperse dye product and its dyeing application example.

[0073] 1. Synthesis of azo disperse dye compounds of the present invention and preparation of dye products

[0074] 1) Synthesis and product example 1 (synthesis of dye Ⅰ-2 and preparation of dye product)

[0075] Diazotization:

[0076] Add 13.8 grams of p-nitroaniline and 100 milliliters of water into a 250 milliliter four-neck flask with stirring, add 30.42 grams of 30% hydrochloric acid and stir to dissolve, cool down to below 5°C, maintain the temperature at 0-5°C, and slowly add 23 Carry out diazotization reaction with 30% aqueous solution of sodium nitrite. The reaction takes about 2 hours. A small amount of sulfamic acid eliminates excess sodium nitrite for later use.

[0077] Coupling reaction:

[0078] Slowly add the above-mentioned diazonium solution to a mixed s...

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Abstract

The invention provides an azo disperse dye compound as well as a synthesis method and dyeing application thereof. The disperse dye compound is shown as a general formula (1) as follows: the general formula (1) is shown in the description, wherein D, R1 to R4 and n are defined as the description. The azo disperse dye compound provided by the invention and auxiliary agents can form a disperse dye according to a certain ratio; the disperse dye has a good deep dyeing property, wide pH (Potential of Hydrogen) tolerance and good various color fastnesses. The azo disperse dye has no toxin and no carcinogenicity or allergenicity, is safe and environment-friendly, has less emission of three wastes, a simple synthesis process and a low construction price, and is suitable for requirements of market development and industrial production.

Description

technical field [0001] The invention relates to a new disperse dye compound, its preparation method and its dyeing application on fiber materials. Specifically, the present invention relates to an azo disperse dye compound, its preparation method and its dyeing application on fiber materials. Background technique [0002] With the recent rapid development of textile fiber materials, pongee, jeanette, suede, superfine denier polyester fibers, etc. have appeared. These new materials are soft to the touch and comfortable to wear, and have become used by domestic and foreign textile enterprises to develop high-end Popular textile raw materials for textiles. Although the current conventional disperse dyes can barely dye these new materials, the binding force between the dye and the fiber is insufficient, not only the dyeing rate is greatly reduced, but also the fastness of all aspects of the dyed fabric is also reduced to varying degrees. New requirements were put forward. [...

Claims

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Application Information

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IPC IPC(8): C09B29/085C09B29/26C09B29/09D06P1/18D06P3/54D06P3/854C09D11/328
Inventor 曾建平谢兵郑怡华何健
Owner 苏州科法曼化学有限公司
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