Black reactive dye composition

A technology of reactive dyes and compositions, which can be used in organic dyes, dyeing methods, textiles and papermaking, etc., and can solve problems such as unsatisfactory dyeing properties of dyes

Active Publication Date: 2014-08-20
ZHEJIANG RUIHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the dyeing performance of the dye in the published patent appli

Method used

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  • Black reactive dye composition
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  • Black reactive dye composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0070] Take by weighing 30.35 grams of para-ester (i.e., p-(β-sulfate ethyl sulfone group) aniline) in a 500 ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add 12.72 grams after half an hour with a concentration of 31 % (w / w) of hydrochloric acid, and then 30% (w / w) concentration of sodium nitrite solution (containing 7.46 grams of sodium nitrite) was added dropwise to the para-ester solution, and the temperature was controlled at 0-5°C for heavy Nitriding. After the para-ester diazotization is completed, the diazonium solution is obtained. Weigh 32.86 grams of H acid and add it to the above diazo solution, control the temperature at 5-10°C and stir for 10 hours, then use baking soda to adjust the pH to 2-2.5 to make the acidity After the coupling reaction is complete, an acidic coupling compound is obtained.

[0071] In addition, take by weighing 17.82 grams of anthranilic acid in a 250 milliliter beaker, add an appropriate amount of ...

preparation example 2

[0077] Weigh 30.35 grams of para-ester (i.e., p-(β-sulfate ethyl sulfone) aniline) in a 500 ml beaker, add appropriate amount of water and ice for ice grinding and beating, add liquid caustic soda after half an hour to adjust the pH to 12. The temperature is controlled at 0-5°C. After the pH is stable for one hour, add 12.72 grams of 31% (w / w) hydrochloric acid, and then add 30% (w / w) sodium nitrite solution (containing sodium nitrite 7.46 g) was added dropwise into the para-ester solution, and the diazotization was carried out at a controlled temperature of 0-5°C. After the para-ester diazotization is completed, the diazonium solution is obtained. Weigh 32.86 grams of H acid and add it to the above diazo solution, control the temperature at 5-10°C and stir for 10 hours, then use baking soda to adjust the pH to 2-2.5 to make the acidity After the coupling reaction is complete, an acidic coupling compound is obtained.

[0078] In addition, take by weighing 17.82 grams of anthr...

preparation example 3

[0083] Take by weighing 29.51 grams of meta-ester (i.e., meta-(β-sulfate ethyl sulfone group) aniline) in a 500 ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add 12.36 grams after half an hour with a concentration of 31 % (w / w) hydrochloric acid, and then 30% (w / w) concentration of sodium nitrite solution (containing 7.25 grams of sodium nitrite) was added dropwise to the meta-ester solution, and the temperature was controlled at 0-5°C for heavy Nitriding. After the end of the meta-ester diazonium, the diazo solution was obtained, and 31.9 grams of H acid was weighed and added to the above diazo solution, and the temperature was controlled at 15-20°C to stir and react for 8 hours, and then the pH was adjusted to 3-3.5 to complete the acidic coupling reaction, to obtain Acidic couple.

[0084] Another 25.3 grams of aniline-2,5-disulfonic acid was weighed into a 250 ml beaker, and an appropriate amount of water and ice were added for ic...

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Abstract

The invention relates to a black reactive dye composition; based on the total weight of the black reactive dye composition, the black reactive dye composition comprises 30-90wt% of a component A, 0-30wt% of a component B, 0-30wt% of a component C, 0-25wt% of a component D and 0-45wt% of an auxiliary; the component A comprises at least one compound represented by the formula (I); the component B comprises at least one compound represented by the formula (II) or a compound represented by the formula (III); the component C comprises at least one compound represented by the formula (IV); and the component D comprises at least one compound represented by the formula (V) or (VI). The black reactive dye composition disclosed by the invention is applied to printing and dyeing cotton, artificial cotton, fibre, regenerated fibre or textile fabrics thereof or printing and dyeing polyamide fibre, cellulosic fibre, protein fibre or textile fabrics thereof, is particularly applied to printing and discharge-printing artificial cotton, and has excellent washing fastness and perspiration fastness, and therefore, fabrics have good feel.

Description

[0001] This application is a divisional application of Chinese patent application 201210594100.2. The filing date of the original application 201210594100.2 is December 31, 2012, and its name is "a black reactive dye composition". technical field [0002] The invention relates to a printing and dyeing method suitable for cotton, rayon, linen, regenerated fiber or their textiles, or polyamide fiber, cellulose fiber, protein fiber or their textiles, especially suitable for artificial cotton printing Black reactive dye composition. Background technique [0003] With the development of fiber varieties and dyeing technology, the dye market has higher and higher requirements for the dyeing performance of reactive dyes, which also promotes the development of reactive dyes to improve application performance. The development of reactive black dyes has always been a hot spot in the dye industry, because the output of reactive black dyes accounts for more than half of the total output ...

Claims

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Application Information

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IPC IPC(8): C09B67/22C09B67/24D06P1/38
Inventor 杨国旗柳长江陈锋李家琪
Owner ZHEJIANG RUIHUA CHEM
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