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High-performance multiple azo brown reactive dye as well as synthesis and application of mixture thereof

A technology of reactive dyes and polyazo, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems of reducing printing and dyeing costs, and achieve the effects of energy saving, excellent wet fastness, and good level dyeing

Active Publication Date: 2014-07-23
沈钢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently commercially available reactive brown dyes do not have a brown dye with satisfactory shade and performance. For this purpose, a series of brown dyes with excellent performance, good level dyeing, good compatibility, high color fixation rate and energy Environmentally friendly monochromatic brown dyes that meet market and environmental requirements. On this basis, high-performance black reactive dyes are further blended to make printing and dyeing enterprises have a high success rate in application, especially continuous dyeing, and reduce printing and dyeing costs.

Method used

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  • High-performance multiple azo brown reactive dye as well as synthesis and application of mixture thereof
  • High-performance multiple azo brown reactive dye as well as synthesis and application of mixture thereof
  • High-performance multiple azo brown reactive dye as well as synthesis and application of mixture thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of embodiment 1 polyazo brown reactive dye I-1

[0038] In a 1000ml beaker, add 150 parts of water, 28.1 parts of para-ester, 0.1 part of dispersant, stir and beat for 2 hours, add 30 parts of 30% hydrochloric acid, and add 23 parts of 30% sodium nitrite at 0-5 °C The solution was subjected to diazotization reaction for 2 hours. After reaching the end point, sulfamic acid was added to destroy excess nitrous acid, then 188 parts of m-phenylenediaminesulfonic acid solution was added, the temperature was raised to 10-15°C, and the pH was adjusted with 15% sodium acetate solution. =1~2, react for 4~6 hours, when there is no diazonium salt, it is the end point, and set aside.

[0039] In a 1000 ml beaker, add 350 parts of water, 52.3 parts of the compound of formula Ⅱ-1 (R 3 , R 4 hydrogen), 0.1 part of dispersant, stir until fully dissolved, add 30 parts of 50% sulfuric acid, add 23 parts of 30% sodium nitrite solution at 0-5°C for diazotization reaction f...

Embodiment 2

[0041] The preparation of embodiment 2 polyazo brown reactive dyes 1-2

[0042] In a 1000 ml beaker, add 350 parts of water, 52.3 parts of the compound of formula Ⅱ-1 (R 3 , R 4 hydrogen), 0.1 part of dispersant, stir until fully dissolved, add 30 parts of 50% sulfuric acid, add 23 parts of 30% sodium nitrite solution at 0-5°C for diazotization reaction for 2 hours, and add Sulfamic acid destroys excess nitrous acid, add 188 parts of m-phenylenediamine sulfonic acid solution, heat up to 10-15°C, adjust pH=1-2 with 15% sodium acetate solution, react for 4-6 hours, no diazo Salt time is the end point, set aside.

[0043]In a 1000ml beaker, add 150 parts of water, 28.1 parts of para-ester, 0.1 part of dispersant, stir and beat for 2 hours, add 30 parts of 30% hydrochloric acid, and add 23 parts of 30% sodium nitrite at 0-5 °C The solution was subjected to diazotization reaction for 2 hours, and after reaching the end point, sulfamic acid was added to destroy excess nitrous aci...

Embodiment 3-11

[0045] The preparation of embodiment 3-11 polyazo brown reactive dyes I-3~I-11

[0046] Referring to the method of Example 1, dyes I-3 to I-6 can be obtained, and the polyazo brown reactive dyes of I-7 to I-12 can be obtained by changing the coupling sequence and raw materials.

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Abstract

The invention discloses a high-performance multiple azo brown reactive dye. The reactive dye comprises the multiple azo reactive dyes shown by a formula I. The reactive dye is used for dip dyeing, continuous dyeing and printing on protein fibers such as fur, silk and the like or cellulosic fibers such as cotton, flax and the like, the color ranges from yellow light brown to dark brown, and the high-performance multiple azo brown reactive dye not only has higher dye absorptivity and fixation rate, but also has strong such wet-processing fastness as being washable and sweat proof as well as light fastness. The monogenetic dye does not have the defects of head-tail difference and edge-center difference.

Description

[technical field] [0001] The invention relates to a reactive polyazo dye and its synthesis and application, in particular to the synthesis and application of a high-performance polyazo brown reactive dye and a mixture thereof. [Background technique] [0002] Reactive dyes, also known as reactive dyes. It is named because its structure contains active groups that can chemically react with hydroxyl or amino groups in natural or synthetic cellulose fibers. This kind of dye reacts with the fiber during dyeing to form a covalent bond, so that the fastness indicators of the dye, especially the wet fastness, are improved, and it has been widely developed and applied, becoming the largest for cellulose fiber. Reactive dyes are the second largest class of dyes after disperse dyes. [0003] At present, the commonly used brown in the market is generally made of color matching. The difference in the structure of the dyes of each component leads to a great difference in directness to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/513C09B67/22D06P1/384D06P3/66
Inventor 沈钢
Owner 沈钢
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