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Red reactive dye and preparation method thereof

A reactive dye, red technology, applied in the field of red reactive dyes, can solve the problems of poor rubbing fastness, poor washing fastness, difficult to improve and dye depth, difficult to satisfy customers, etc., to improve rubbing fastness, excellent quality The effect of color synchronization and improved washability

Inactive Publication Date: 2015-08-26
ZHEJIANG YIDE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the reactive red dye with J-acid structure is better in promotion and dyeing depth than the reactive red dye with H-acid structure, but the reactive red dye with J-acid structure has less water-soluble groups, and its rubbing fastness and washing fastness It is much worse than reactive red dyes with H acid structure
Especially when making some dark reds, it is difficult to achieve both good lifting and dyeing depth, as well as good rubbing fastness and washing fastness, so it is often difficult to meet customer requirements for these properties

Method used

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  • Red reactive dye and preparation method thereof
  • Red reactive dye and preparation method thereof
  • Red reactive dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1: a kind of red reactive dye, is made up of the compound of simple formula (1-1) structure:

[0065]

[0066] (1-1) Its synthetic method step of the compound of structure is as follows:

[0067] 1. Condensation reaction: add 100g of bottom water to the beaker, control the temperature at 25-45°C, add 10g of sodium metabisulfite and stir until completely dissolved, add 9g of formaldehyde solution slowly, measure the pH at 5.0-9.0 after the addition is complete, and then Raise the temperature to 50-70°C, keep the temperature and keep the pH value, and continue stirring for 1-2 hours. The condensation reaction formula is shown in formula (a):

[0068] Na 2 S 2 o 5 +2HCHO+H 2 O→2HOCH 2 SO 3 Na

[0069] Formula (a)

[0070] 2. Sulfomethylation reaction: Cool the above reaction solution to 30-50°C, then add 26g of 2-amino-5-naphthol-7-sulfonic acid, namely J acid, and add 12g of baking soda to raise the pH to 6.0- 8.0, keep warm at 30-50°C and react un...

Embodiment 2

[0080] Embodiment 2: a kind of red reactive dye, is made up of the compound of simple formula (1-2) structure:

[0081]

[0082] (1-2) Its synthetic method step of the compound of structure is as follows:

[0083] 1. Condensation reaction: add 100g of bottom water to the beaker, control the temperature at 25-45°C, add 10g of sodium metabisulfite and stir until completely dissolved, add 9g of formaldehyde solution slowly, measure the pH at 5.0-9.0 after the addition is complete, and then Raise the temperature to 50-70°C, keep the temperature and keep the pH value, and continue stirring for 1-2 hours. The condensation reaction formula is shown in formula (a):

[0084] Na 2 S 2 o 5 +2HCHO+H 2 O→2HOCH 2 SO 3 Na

[0085] Formula (a)

[0086] 2. Sulfomethylation reaction: Cool the above reaction solution to 30-50°C, then add 26g of J acid, add 12g of baking soda to increase the pH to 6.0-8.0, keep warm at 30-50°C until the residue of J acid liquid phase is ≤2.0 % is the...

Embodiment 3

[0096] Embodiment 3: a kind of red reactive dye, is made up of the compound of simple formula (1-3) structure:

[0097]

[0098] (1-3) Its synthetic method step of the compound of structure is as follows:

[0099] 1. Condensation reaction: add 100g of bottom water to the beaker, control the temperature at 25-45°C, add 10g of sodium metabisulfite and stir until completely dissolved, add 9g of formaldehyde solution slowly, measure the pH at 5.0-9.0 after the addition is complete, and then Raise the temperature to 50-70°C, keep the temperature and keep the PH value, and continue to stir and react for 1-2 hours. The condensation reaction formula is shown in formula (a):

[0100] Na 2 S 2 O5+ 2 HCHO+H 2 O→2HOCH 2 SO 3 Na

[0101] Formula (a)

[0102] 2. Sulfomethylation reaction: Cool the above reaction solution to 30-50°C, then add 26g of J acid, add 12g of baking soda to raise the pH to 6.0-8.0, keep warm at 30-50°C until the residue of J acid liquid phase is ≤2.0 % ...

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PUM

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Abstract

The invention relates to a red reactive dye and a preparation method thereof. The dye is a mixture compounded by one or more than two structures selected from a formula (1) according to any proportion. One shown on the formula (1) is a mixture selected from any one or more than two of the following structural general formula: R1, R2, R3 and R4 represent -H, -CH3, -OCH3 or -SO3 independently respectively, Y1 and Y2 represent -CH=CH2 or -C2H4OSO3M independently respectively, and M represents hydrogen or alkali metal. The red reactive dye has the advantages of being good in crocking fastness and washing fastness and high in light fastness and heat-resistant stability. (img file= 'DDA0000708189600000011. TIF' wi = '917' he = '725').

Description

technical field [0001] The invention belongs to the field of reactive dyes in new material technology, in particular to a red reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes are currently taking more and more market share, and people are paying more and more attention to their research. The research on reactive dyes began in 1956, and it has been half a century. In recent years, many review articles on reactive dyes have been published, not only involving the development of reactive dyes themselves, but also including the application performance and process of reactive dyes, focusing on improving their application performance and environmental protection. [0003] The general red reactive dyes use H acid and J acid as coupling components to combine with various aromatic amine diazo components to form a color matrix. Among them, the reactive red dye with J-acid structure is better in promotion and dyeing depth than the reactive red...

Claims

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Application Information

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IPC IPC(8): C09B67/24C09B62/513D06P1/384D06P3/66
Inventor 孟胜锋傅卫红秦杰峰罗章强杨军张志伟
Owner ZHEJIANG YIDE CHEM
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