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A kind of high-performance alkali-resistant red reactive dye and preparation method thereof

A reactive dye and red technology, applied in reactive dyes, dyeing methods, organic dyes, etc., can solve the problems of inconsistency in directness, exhaustion rate and reactivity, etc., and achieve the effect of increased alkali resistance and high alkali hydrolysis resistance

Active Publication Date: 2021-12-10
江苏德美科化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a high-performance alkali-resistant red reactive dye and a preparation method thereof. The reactive red dye of the present invention consists of two color bodies with different structures, and belongs to intramolecular color matching. It overcomes the problems of inconsistency such as directness, exhaustion rate, reactivity, etc. in the intermolecular color matching of existing reactive red dyes. In addition, the reactive red dye provided by the invention contains a chloro-s-triazine active group, 2-chloroethyl sulfone Base active group and (2-sulfonic acid oxygen ethyl sulfone group) ethyl carbamoyl active group, have higher alkali-resistant hydrolysis stability, therefore, active red dye of the present invention not only has high lifting force, also has Excellent alkali hydrolysis temperature resistance, improve the color fixation rate of dyes, reduce the generation of colored wastewater, improve the environmental protection of dyes, and have broad application prospects

Method used

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  • A kind of high-performance alkali-resistant red reactive dye and preparation method thereof
  • A kind of high-performance alkali-resistant red reactive dye and preparation method thereof
  • A kind of high-performance alkali-resistant red reactive dye and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053]

[0054] In this embodiment, commercial reactive red dyes include reactive red dyes 1-2, diffusants (methylnaphthalenesulfonic acid formaldehyde condensates, the degree of condensation is 4, and the degree of sulfonation is 2), and the mass percentage is 85%. Reactive red dye, 5% by mass percentage of diffusing agent, 0.1% by mass percentage of water-based polymer dustproof agent, and 9.9% by mass percent of sodium sulfate.

[0055] Take 2g of the above-mentioned commercial dye, add 8g of urea, 2.5g of baking soda, 60g of sodium alginate paste, 1g of resist salt and 26.5g of water to prepare a reactive red printing paste, print the cotton fabric, and dry it at 85°C. Then steam at 100° C. for 7 minutes (relative humidity 70%), wash and dry to obtain dyed fabrics, and the product performance test results are shown in Table 1.

[0056] The preparation method of described reactive red dye I-1 comprises the steps:

[0057] Step 1: Add 35.2g of 4-amino-(2'-((2"-(sulfate)e...

Embodiment 2

[0066]

[0067] In this embodiment, commercial reactive red dyes include reactive red dyes 1-2, diffusants (methylnaphthalenesulfonic acid formaldehyde condensates, the degree of condensation is 4, and the degree of sulfonation is 2), and the mass percentage is 85%. Reactive red dye, mass percent is 5% diffusing agent, mass percent is 0.1% water-based polymer dustproof agent, mass percent is 9.9% sodium sulfate;

[0068] Take 2g of the above-mentioned commercial dye, add 8g of urea, 2.5g of baking soda, 60g of sodium alginate paste, 1g of resist salt and 26.5g of water to prepare a reactive red printing paste, print the cotton fabric, and dry it at 85°C. Then steam at 100° C. for 7 minutes (relative humidity 70%), wash and dry to obtain dyed fabrics, and the product performance test results are shown in Table 1.

[0069] In this example, the preparation method of the reactive dye I-2 is the same as in Example 1, except that N-methyl J acid replaces the J acid in the prepara...

Embodiment 3

[0071] The difference between this embodiment and embodiment 1 is:

[0072] In this embodiment, the commercial dyeing agent includes 75% by mass of reactive red dye, 5% by mass of diffusing agent, 0.1% by mass of dustproof agent, and 5% by mass of sodium sulfate.

[0073] In this example, the molar ratio of compound a to sodium nitrite is 1:1.01 to 1.03; the molar ratio of compound a to hydrochloric acid is 1:1.05 to 1.1; the molar ratio of cyanuric chloride or cyanuric fluoride to H acid The ratio is 1:1~1.03:1;

[0074] In this example, the molar ratio of 2,4-diaminobenzenesulfonic acid to H acid monoazo red reactive dye is 0.98:1 to 1:1; the molar ratio of 2,4-diaminobenzenesulfonic acid to hydrochloric acid 1:2.5~1:2.8; the molar ratio of 2,4-diaminobenzenesulfonic acid to sodium nitrite is 1:1.01~1:1.03;

[0075] In this embodiment, the molar ratio of 2,4-diaminobenzenesulfonic acid to sodium nitrite is 1:1.01~1.03; the molar ratio of 2,4-diaminobenzenesulfonic acid to ...

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Abstract

The invention discloses a high-performance alkali-resistant red reactive dye, which is represented by the general structural formula I. The red reactive dye of the present invention consists of two chromophores with different structures, which belongs to intramolecular color matching, and overcomes the problems of inconsistency such as directness, exhaustion rate, reactivity, etc. in the intermolecular color matching of existing red reactive dyes. In addition, The red reactive dye provided by the invention contains a chloro-s-triazine active group, a 2-chloroethyl sulfone active group and (2-sulfonic acid oxygen ethyl sulfone) ethyl carbamoyl active group, which has higher resistance to Alkaline hydrolysis stability, therefore, the reactive red dye of the present invention not only has high lifting power, but also has excellent alkali hydrolysis temperature resistance, improves the color fixation rate of the dye, reduces the generation of colored wastewater, and makes the dye environmentally friendly Sex improved.

Description

technical field [0001] The invention relates to the technical field of reactive dyes, in particular to a high-performance alkali-resistant red reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes have complete chromatograms and rich varieties, and are widely used in the dye application of cellulose fibers and protein fibers. Due to their molecular structure containing reactive groups, reactive dyes can react with hydroxyl groups on cellulose fibers or protein fibers under alkaline conditions. Therefore, the wet rubbing fastness of the fiber dyed by reactive dyes is superior. At the same time, because the reactive dyes are water-soluble dyes, the dyeing medium is water, so alkaline conditions The hydrolysis of reactive dyes is inevitable, and the hydrolyzed dyes cannot further react with the fibers, and the residues in the water cause a large amount of colored wastewater. Usually, the fixation rate of traditional reactive dyes on fibers i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/513C09B67/24C09B67/36D06P1/382D06P1/384D06P3/66
Inventor 刘儒初高超徐鹏张坤明张怡
Owner 江苏德美科化工有限公司
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