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A kind of orange active dye compound and its preparation method and application

A technology of reactive dyes and compounds, applied in orange reactive dye compounds and its preparation method and its application in cellulose fiber printing and dyeing, to achieve the effects of novel structure, good lifting power and good combination stability

Inactive Publication Date: 2018-06-15
ZHEJIANG LONGSHENG GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent document US4284554A has disclosed a group of reactive orange dye compounds synthesized by 4-methylaniline-2,5-disulfonic acid, but there is still room for improvement in color fastness

Method used

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  • A kind of orange active dye compound and its preparation method and application
  • A kind of orange active dye compound and its preparation method and application
  • A kind of orange active dye compound and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. A contraction reaction

[0047] Weigh 18.4g (0.1mol) cyanuric chloride, 30mL bottom water, 100g ice, 0.5g MF and beat for 20min. Weigh 23.9g (0.1mol) of J acid and 250mL of bottom water, adjust the pH to 6.5-7.0 with 30% liquid caustic soda, add dropwise to the cyanuric chloride solution, and control the pH to 2.0-3.0 during the dropwise addition. Temperature 0-5°C. After the addition, adjust the pH to 3.0-3.5 with sodium bicarbonate, react at a temperature of 0-5°C for 2-3 hours, then detect with ethanol solution of 4-dimethylaminobenzaldehyde, the microscopic yellow is the end point, and a shrinkage solution is obtained ,spare.

[0048] 2. Diazo reaction

[0049] Weigh 10.7g (0.1mol) of p-methylaniline and add dropwise to 24g of 98% sulfuric acid (containing 0.24mol of sulfuric acid) at a temperature of 50-55°C, stir for 30min, and dropwise add 32g of 66% fuming Sulfuric acid (SO 3The content is 0.26mol), and the temperature is controlled at 15-20°C. After 20 ...

Embodiment 2～6

[0057] According to the preparation method in Example 1, different coupling components are used to prepare, and the dye compounds with the structures shown in the following table 1 can be prepared respectively:

[0058] Table 1

[0059]

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PUM

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Abstract

The invention discloses an orange reactive dye compound and its preparation method and application. The structure of the orange reactive dye compound is shown in the general formula (I). In the formula (I), R1 is an alkyl group of C1-C4; R2 R3 is H or C1-C4 alkyl; X is chlorine or fluorine; M is H or an alkali metal. The present invention also provides the application of the orange reactive dye compound in cellulose fiber printing and dyeing, the orange reactive dye compound has good lifting power, high solubility, and has excellent color fastness to washing and rubbing, and is compatible with cellulose The fiber bonding stability is good, which can meet the requirements of conventional printing, especially the printing process of automatic pulping system.

Description

(1) Technical field [0001] The invention relates to a reactive dye compound, in particular to an orange reactive dye compound and its preparation method and application in cellulose fiber printing and dyeing. (2) Background technology [0002] Reactive orange K-GN is often used in the printing of cellulose fibers due to its bright color. Its structural formula is as follows: [0003] [0004] The main problem that the above-mentioned dyes exist is that the solubility is not good, and it is easy to produce color points. In order to solve this problem, the present invention uses 4-methylaniline-2,5-disulfonic acid instead of aniline-2,5-disulfonic acid, and through structural modification, a group of dyes with a shade similar to orange K-GN are obtained. Solubility is improved. Patent document US4284554A has disclosed a group of reactive orange dye compounds synthesized by using 4-methylaniline-2,5-bissulfonic acid, but there is still room for improvement in terms of colo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/085D06P1/382D06P3/66
Inventor 张友珍李世华周鹏飞何耀耀周俊锋汪键何淑娥
Owner ZHEJIANG LONGSHENG GROUP