Double-reactive-group yellow active dye which can be applied to printing

A reactive dye and dual-reactive technology, applied in the field of dual-reactive-based yellow reactive dyes, can solve the problems of not saving cost and reducing consumption, generating a lot of sewage, unable to meet the preparation of mother liquor in automatic sizing system, etc., and achieving excellent fastness index. , to eliminate waste water, the effect of bright color

Active Publication Date: 2018-10-16
无锡润新染料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional reactive yellow dyes, such as Brilliant Yellow K-6G, although the production and sales volume is large, still have some shortcomings, mainly as follows: low strength, cannot be used for printing and dyeing extra-dark colors, and cannot meet the mother liquor preparation of automatic pulping system
At the same time, in order to meet the vividness of the color, salting-out purification is carried out before commercialization, which produces a lot of sewage and high production costs. This method has failed to meet the requirements of cost-saving and clean production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A double reactive yellow reactive dye that can be used for printing is characterized in that it consists of composition I and composition II, wherein the molar ratio of composition I and composition II is 14~16: 2~3;

[0019] The preparation method of composition I is as follows: first condense cyanuric chloride and 2,4 diaminobenzenesulfonic acid for the first time, then add 3.5 diaminobenzoic acid in the first condensation, and carry out the second condensation. After the secondary condensation, under the action of hydrochloric acid and sodium nitrite, carry out diazotization reaction to generate diazonium salt, and finally add N-ethylpyridone to the diazonium salt for alkaline coupling, concentrate and spray dry have to;

[0020] Composition II structural formula is:

[0021] .

Embodiment 2

[0023] The preparation method of composition I: first condense cyanuric chloride and 2,4 diaminobenzenesulfonic acid for the first time, then add 3.5 diaminobenzoic acid in the first condensation, carry out the second condensation, and the second After the secondary condensation, under the action of hydrochloric acid and sodium nitrite, carry out diazotization reaction to generate diazonium salt, and finally add N-ethylpyridone to the diazonium salt for alkaline coupling, concentrate and spray dry to obtain Composition I component; wherein, the first condensation of cyanuric chloride and 2,4 diaminobenzenesulfonic acid is carried out at a temperature of -5 ° C to 10 ° C, and the pH value is 1 ~ 3, and the first condensation reaction The molar ratio of cyanuric chloride to 2,4 diaminobenzenesulfonic acid is 1:0.9~1.1; 3.5 diaminobenzoic acid is added to the first condensation for the second condensation at a temperature of 20°C~30° Under C, the pH value is 4~6, and the reaction...

Embodiment 3

[0025] The preparation method of composition II: first condense cyanuric chloride and 2,4 diaminobenzenesulfonic acid for the first time, then add m-(β-sulfate ethyl sulfone) aniline in the first condensation, and carry out the second condensation Secondary condensation, after the second condensation, under the action of hydrochloric acid and sodium nitrite, carry out diazotization reaction to produce diazonium salt, and finally add N-ethylpyridone methylsulfonate to the diazonium salt, Carry out alkaline coupling, concentrate and spray dry to obtain the composition II component; wherein, the first condensation of cyanuric chloride and 2,4 diaminobenzenesulfonic acid is carried out at a temperature of -5°C to 10°C, The pH value is 1~3, and the molar ratio of cyanuric chloride to 2,4 diaminobenzenesulfonic acid in the first condensation reaction is 1:0.9~1.1; Aniline is subjected to the second condensation at a temperature of 30°C to 3,40°C, at a pH of 6 to 7, and the reaction ...

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Abstract

The invention discloses double-reactive-group yellow active dye which can be applied to printing. The double-reactive-group yellow active dye comprises a composition I and a composition II, wherein the molar ratio of the composition I to the composition II is (14-16):(2-3), and both of the composition I and composition II are obtained by performing multiple condensation and coupling on cyanuric chloride and 2,4-diaminobenzenesulfonic acid. Through the double-reactive-group yellow active dye, not only can wastewater brought by salting out in a traditional process be avoided, but also the colorof the dye can be brighter through compounding; and the fastness index is more superior, the solubility reaches 160 g / L at 25 DEG C, the light fastness reaches a sixth grade, the colorfastness to soaping reaches a fourth grade, the rub fastness reaches a fourth-fifth grade, and the sweat fastness reaches a fourth-fifth grade.

Description

technical field [0001] The invention belongs to the field of chemical printing and dyeing, and in particular relates to a yellow reactive dye with double active groups that can be used for printing. Background technique [0002] Traditional reactive yellow dyes, such as Brilliant Yellow K-6G, have large production and sales volume, but still have some shortcomings, mainly as follows: low strength, cannot be used for printing and dyeing extra-dark colors, and cannot meet the mother liquor preparation of automatic pulping system. At the same time, in order to meet the vividness of the color, salting-out purification is carried out before commercialization, which produces a lot of sewage and high production costs. This method has failed to meet the requirements of cost-saving and clean production. Contents of the invention [0003] Purpose of the invention: the purpose of the present invention is to provide a kind of double reactive yellow reactive dye that can be used for pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/085C09B62/51C09B67/22C09B67/24
CPCC09B62/085C09B62/51C09B67/004C09B67/0047C09B67/0072
Inventor 周佳易任争艳秦超
Owner 无锡润新染料有限公司
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