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High-performance multi-azo brown reactive dye, as well as synthesis and application of mixture of high-performance multi-azo brown reactive dye

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 increased directness, good dyeing depth and lifting power, and excellent wet processing The effect of fastness

Inactive Publication Date: 2013-10-16
沈钢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 multi-azo brown reactive dye, as well as synthesis and application of mixture of high-performance multi-azo brown reactive dye
  • High-performance multi-azo brown reactive dye, as well as synthesis and application of mixture of high-performance multi-azo brown reactive dye
  • High-performance multi-azo brown reactive dye, as well as synthesis and application of mixture of high-performance multi-azo brown reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The preparation of embodiment 1 polyazo brown dye Ⅰ-1

[0065] In a 1000 ml beaker, add 200 parts of water, 52.3 parts of formula III-1 compound (R 4 , R 5 hydrogen), 0.1 part of dispersant, stirring and beating for 1 hour, adding 35 parts of 30% hydrochloric acid, adding 23 parts of 30% sodium nitrite solution at 0-5°C for diazotization reaction for 2 hours, and adding amino Sulfonic acid destroys excess nitrous acid, then add 15.2 parts of 15% 3.5-diaminobenzoic acid solution, heat up to 10-15°C, adjust pH=1-2 with 15% sodium acetate solution, and react 4-6 Hours, when there is no diazonium salt, it is the end point, and it is ready for use.

[0066] In a 1000ml beaker, add 300 parts of water, 56.2 parts of formula para-ester, 0.1 part of dispersant, stir and beat for 1 hour, add 60 parts of 30% hydrochloric acid, and add 46 parts of 30% nitrous acid at 0-5°C The sodium solution was diazotized for 2 hours. After reaching the end point, sulfamic acid was added to de...

Embodiment 2-24

[0068] Example 2-24 Preparation of polyazo brown dyes I-2 to I-12 and preparation of other structures

[0069] Change different R with reference to the method of Example 1 1 , R 2 , R 3 The diazo component can be used to obtain dyes I-2~I-12 and other polyazo brown dyes.

[0070]

[0071]

[0072]

[0073]

[0074] Only some dyes of the general formula I are exemplified here, and those skilled in the art can foresee that dyes I with different substituents can be obtained by using different reactants to finally realize the present invention.

Embodiment 25

[0075] The preparation of embodiment 25 polyazo brown dye II-1

[0076] In a 1000 ml beaker, add 200 parts of water, 52.3 parts of formula III-1 compound (R 4 , R 5 hydrogen), 0.1 part of dispersant, stirring and beating for 1 hour, adding 35 parts of 30% hydrochloric acid, adding 23 parts of 30% sodium nitrite solution at 0-5°C for diazotization reaction for 2 hours, and adding amino Sulfonic acid destroys excess nitrous acid, then add 15.2 parts of 15% 3.5-diaminobenzoic acid solution, heat up to 10-15°C, adjust pH=1-2 with 15% sodium acetate solution, and react 4-6 Hours, when there is no diazonium salt, it is the end point, and it is ready for use.

[0077] In a 1000ml beaker, add 150 parts of water, 28.1 parts of formula para-ester, 0.1 part of dispersant, stir and beat for 1 hour, add 30 parts of 30% hydrochloric acid, and add 23 parts of 30% nitrous acid at 0-5°C The sodium solution was diazotized for 2 hours. After reaching the end point, sulfamic acid was added to ...

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Abstract

The invention discloses a high-performance multi-azo brown reactive dye which comprises a multi-azo dye shown in formula I or formula II (see the specification). The reactive dye is applicable to dip dyeing, continuous coloring and printing on cellulosic fiber including cotton, flax and mucilage glue or protein fiber including fur and silk, and the colors vary from yellow light brown to nigger-brown. The high-performance multi-azo brown reactive dye has higher color absorption rate and fixation rate, higher wet-processing fastness including bear washing and perspiration, and excellent color fastness to sunlight. As a monogenetic dyestuff, the high-performance multi-azo brown reactive dye is free from the defects of bad continuous dyeing in the head, tail and central parts.

Description

technical field [0001] The invention relates to the synthesis of a reactive polyazo brown dye and the application of a high performance polyazo brown reactive dye. Background technique [0002] At present, the commonly used brown in the market is generally made of color matching. Due to the difference in the structure of the dyes of each component, the directness to the fiber is very different, so that the speed of dyeing on the fiber is inconsistent, which leads to the dyeing process, especially continuous dyeing. In the process, color flowers will appear, and at the same time, it will also cause the head-to-tail difference and edge center difference of the fiber, which cannot meet the needs of the market. [0003] The brown dye involved in the present invention is a dye with a single structure, and contains multiple chromogenic groups in the molecule, which has good dyeing depth and lifting power, and has good level dyeing property, very high color absorption rate and fast...

Claims

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Application Information

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