Vinyl-sulfone type reactive disperse dye for supercritical CO2 and preparation method and application thereof

A reactive disperse dye, vinyl sulfone type technology, applied in reactive dyes, dyeing methods, organic dyes, etc., can solve problems such as difficult application of supercritical dyeing, achieve good industrialization prospects, small molecular weight, and reduce the degree of fracture

Active Publication Date: 2017-03-15
SHENYANG RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The dye still has good dispersibility at high temperature and is suitable for high-temperature dyeing in conventional water phase. It has good dye

Method used

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  • Vinyl-sulfone type reactive disperse dye for supercritical CO2 and preparation method and application thereof
  • Vinyl-sulfone type reactive disperse dye for supercritical CO2 and preparation method and application thereof
  • Vinyl-sulfone type reactive disperse dye for supercritical CO2 and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Compound 1:

[0044]

[0045](1) Weigh 2-methoxy-4-acetamidoaniline (18.1g, 0.1mol), add 300ml DMF, stir to dissolve, add Na 2 CO 3 (21.2g, 0.2mol), tetra-n-butylammonium bromide (3.22g, 0.001mol), the temperature was raised to 90°C, and allyl bromide (36.3g, 0.3mol) was slowly added dropwise, kept for 2h, and the reaction was detected by TLC After the reaction is complete, add 300ml of water, extract with dichloromethane (30ml×3), wash with water, dry the organic phase, and rotary evaporate to obtain 22.76g of brown-black solid with a yield of 87.54%.

[0046] (2) Weigh p-vinylsulfone aniline (10.98g, 0.06mol), add 40g of water, add 36% HCl (18.25g, 0.18mol), heat up to 50°C, stir and dissolve into a brown-black solution, cool to 0- 5°C, weigh NaNO 2 (4.14g, 0.06mol) was made into a 30% solution, slowly added dropwise to the reaction solution, and reacted for 30min to obtain a yellow and clear diazonium solution.

[0047] (3) Weigh the product (16.38g, 0.063mol)...

Embodiment 2-6

[0049] Examples 2-6 were prepared according to the method of Example 1, as shown in Table 1.

[0050] Table 1

[0051]

Embodiment 7

[0053] Compound 7:

[0054]

[0055] (1) Weigh 2-ethoxy-4-propionamidoaniline (20.8g, 0.1mol), add 400ml DMF, stir to dissolve, add Na 2 CO 3 (30.9g, 0.3mol), add benzyltriethylammonium chloride (2.27g0.01mol), heat up to 65°C, slowly add allyl bromide (48.4g, 0.4mol), keep warm for 2h, and detect with TLC After the reaction was complete, 300ml of water was added, extracted with acetone (30ml×3), washed with water, the organic phase was dried, and rotary evaporated to obtain 25.83g of a brown-black solid with a yield of 89.71%.

[0056] (2) Weigh 2,6-dibromo-4-vinylsulfoneaniline (10.83g, 0.03mol), dissolve it in 40g of concentrated sulfuric acid, stir and dissolve into a dark red solution, slowly add 37% nitrosylsulfuric acid solution dropwise (9.52g, 0.03mol), and kept stirring for 30min to obtain a dark brown diazonium solution.

[0057] (3) Weigh the product (8.64g, 0.03mol) in step (1), add 30mlCH 3 COOH, add 30gCH 3 Add 300 g of ice water to COONa, stir, and slow...

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Abstract

The invention belongs to the field of dye synthesis, and relates to a vinyl-sulfone type reactive disperse dye for supercritical CO2 and a preparation method thereof. The structure of the compound is shown in the formula (I) specified in the description, wherein each functional group in the formula is defined in the description. The compound has the good dyeing activity, can be used for supercritical CO2 dyeing, and has the good dyeing performance on both wool fiber and polyester fiber.

Description

technical field [0001] The invention belongs to the technical field of fine chemical dyes, specifically a supercritical CO 2 Vinylsulfone-type reactive disperse dyes and their preparation methods and applications. Background technique [0002] As a green dyeing method, supercritical carbon dioxide dyeing uses supercritical carbon dioxide instead of water medium, and selects appropriate dyes to disperse and dye in supercritical carbon dioxide. Compared with traditional water bath dyeing, it reduces the use of auxiliary agents and eliminates wastewater pollution. , shorten the dyeing procedure, and has good industrialization prospects. [0003] At present, the industry has developed some reactive disperse dyes for supercritical carbon dioxide dyeing. These reactive disperse dyes mainly use disperse dyes as the matrix to access active groups. The active groups include: cyanuric fluoride, cyanuric chloride, bromoacrylamide, vinyl sulfone etc. However, triazine active groups a...

Claims

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Application Information

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IPC IPC(8): C09B62/51D06P3/52D06P3/66D06P1/384C07C315/04C07C317/34
CPCC07C315/04C07C317/34C09B62/51D06P1/384D06P3/528D06P3/666Y02P20/54
Inventor 李学敏王瑛张晓超白雪松徐飒英
Owner SHENYANG RES INST OF CHEM IND
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