Benzothiazole dye monomeric compound and disperse dye

A technology of benzothiazoles and dye monomers, applied in the direction of azo dyes, organic dyes, monoazo dyes, etc., to achieve uniform color tone, good dyeing depth, and wide dyeing pH range

Active Publication Date: 2012-12-12
ZHEJIANG LONGSHENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the demand for heterocyclic intermediates in the market has grown rapidly. The introduction of heterocyclic rings into dye molecules is an active field of research and development for disperse dyes. Although the existing literature CN101522816 and GB909843 provide a new dye compound, it can Good performance in fastness and sublimation fastness, but there is still room for further improvement

Method used

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  • Benzothiazole dye monomeric compound and disperse dye
  • Benzothiazole dye monomeric compound and disperse dye
  • Benzothiazole dye monomeric compound and disperse dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put 21.8g (0.2mol) of m-aminophenol, 72g (1mol) of acrylic acid, 100g of water into a 500ml container, heat up to 90°C, keep it warm for 10h, cool down, add 200g of methanol at the same time, keep stirring at 0-5°C for 12h, and crystallize Filter and wash with 50 g of methanol. After washing, dry to obtain the dicarboxylic acid product a.

[0034]

[0035] Put 68.5g (0.5mol) of bromoacetone, 11.6g of soda ash, and dicarboxylic acid product a (100.3g, 0.1mol) into a 500ml container, raise the temperature to 80°C, put in 5gKI, and keep warm for 12h. Cool down to 40°C, add 200g of water, crystallize and filter to obtain coupling component A.

[0036]

[0037] Diazotization: Add 50g of 98% concentrated sulfuric acid, 80g of 85% phosphoric acid, 35g (0.11mol) of 40% nitrosyl sulfuric acid into a 250ml container, cool down to 0~5℃, control 3~4h to finish adding 19.5 g (0.1mol) 2-amino-6-nitrobenzothiazole, after adding, keep warm at 0~5℃ for 3h.

[0038] Coupling: Pu...

Embodiment 2

[0043] Similar to the preparation method of the coupling raw material described in Example 1, the coupling component B can be prepared by replacing bromoacetone with an equimolar amount of 2-bromoacetophenone.

[0044]

[0045] According to the synthesis method of the dye in Example 1, the above-mentioned coupling component B is coupled with the diazo solution of 2-amino-6-nitrobenzothiazole to obtain the finished dye I-2, λ max (DMF)=550nm, the polyester fabric dyed by high temperature and high pressure method is red, the fastness performance is good, the washing fastness reaches grade 5, and the ironing sublimation fastness reaches above grade 4~5.

[0046]

Embodiment 3~12

[0048] According to the preparation methods of Examples 1-2, different coupling raw materials are used to prepare dyes with excellent color fastness properties of the structures shown in Table 1 below (polyester dyeing method is the same as Example 1).

[0049] Table 1

[0050]

[0051]

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PUM

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Abstract

The invention provides a benzothiazole dye monomeric compound for dyeing of a hydrophobic fibrous material. The benzothiazole dye monomeric compound has a structure as shown in the formula (I). A disperse dye prepared from the benzothiazole dye monomeric compound provided by the invention has good deep dyeing property and wide pH scope of dyeing when applied in dyeing of fabrics, is especially suitable for printing and dyeing of hydrophobic textile materials, including dyeing and printing of semisynthetic or synthetic hydrophobic fiber blended textile materials, and is especially suitable for dyeing of polyester materials. By the use of the disperse dye, red dyed fabrics with uniform tone, excellent washing fastness and excellent ironability and sublimation fastness can be obtained.

Description

(1) Technical field [0001] The invention relates to a benzothiazole dye monomer compound suitable for dyeing hydrophobic fiber materials and a disperse dye prepared from it. (2) Background technology [0002] In recent years, with the increase in the demand and consumption of polyester fabrics, disperse dyes have become one of the most active dyes in the world dye market. The fastness of polyester fabrics dyed with disperse dyes is an important indicator of its quality. On the one hand, products with poor color fastness will fade during wearing, which will affect other clothes worn on the body, or contaminate other clothes when washed with other clothes, affecting the appearance; on the other hand, there is a direct relationship between good and bad color fastness To the health and safety of the human body, the dye molecules on products with poor color fastness may be absorbed by the human body through the skin and endanger the skin and even harm the health of the body. [...

Claims

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Application Information

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IPC IPC(8): C09B29/045C09B67/38D06P1/19D06P3/54
Inventor 祝培明蒋应海陈伟章李世华陆军张桂香周鹏飞
Owner ZHEJIANG LONGSHENG GROUP
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