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Reactive red dye as well as preparation and application thereof

A technology of reactive red dye and condensation reaction, applied in reactive dye, reactive red dye and its preparation method and in the application field of cotton fiber printing and dyeing, can solve the problems of increasing dye cost and waste of active groups

Active Publication Date: 2017-06-09
TAIXING JINYUN DYESTUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Reactive dyes with multiple reactive groups have a better color fixation rate than reactive dyes with single reactive groups, but blindly stacking reactive groups has no practical significance for the dye itself, it will only increase the cost of dye production, and the hydrolysis of the dye will also cause waste of reactive groups

Method used

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  • Reactive red dye as well as preparation and application thereof
  • Reactive red dye as well as preparation and application thereof
  • Reactive red dye as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: the preparation of formula (I-1) compound

[0051] (1) Diazo coupling reaction

[0052]In a 250ml beaker, add 20 parts (parts by mass) of ice, 24.3 parts of 30% hydrochloric acid, 28.1 parts of meta-ester, ice grinding and beating for 30 minutes, slowly add 6.97 parts of sodium nitrite to generate diazonium salt, wait until sodium nitrite is completely added Stir for 1 hour, and use sulfamic acid to eliminate the slight excess of sodium nitrite; slowly add the diazonium salt dropwise to 31.9 parts of H acid, adjust the pH to 5.5-8.0 with baking soda while adding it, and continue the reaction for 2 hours after the addition is complete. The diazonium salt completely disappeared while maintaining the system temperature at 0-10°C.

[0053]

[0054] (2) Primary condensation of coupling components and cyanuric fluoride

[0055] In a 1000ml flask, add 50 parts (parts by mass) of ice to the coupling liquid, then dropwise add 13.5 parts (percentage) of cyanuri...

Embodiment 2

[0066] Embodiment 2: the preparation of formula (I-2) compound

[0067] (1) Diazo coupling reaction

[0068] In a 250ml beaker, add 20 parts of ice, 24.3 parts of 30% hydrochloric acid, 28.1 parts of para-ester, ice grinding and beating for 30 minutes, slowly add 6.97 parts of sodium nitrite to generate diazonium salt, stir for 1 hour after the sodium nitrite is completely added, and use Sulfamic acid eliminates slightly excess sodium nitrite; slowly add the diazonium salt to 31.9 parts of H acid, and adjust the pH to 5.5-8.0 with baking soda while adding, continue to react for 2 hours after the addition, and the diazonium salt is completely disappear while maintaining the system temperature at 0-10°C.

[0069]

[0070] (2) Primary condensation of coupling components and cyanuric fluoride

[0071] In a 1000ml flask, add 50 parts (parts by mass) of ice to the coupling liquid, then dropwise add 13.5 parts (percentage) of cyanuric fluoride to it, adjust pH=3.5-5.0 with bakin...

Embodiment 3

[0082] Embodiment 3: the preparation of formula (I-3) compound

[0083] (1) Diazo coupling reaction

[0084] In a 250ml beaker, add 20 parts of ice, 24.3 parts of 30% hydrochloric acid, 35.2 parts of 2-[2-(3-aminobenzamido) ethyl sulfone] ethanol sulfate, ice grinding and beating for 30min, 6.97 parts of sodium nitrite Add slowly to generate diazonium salt, stir for 1 hour after sodium nitrite is completely added, and use sulfamic acid to eliminate the slight excess of sodium nitrite; slowly add diazonium salt to 31.9 parts of H acid, and use a small amount of water while adding Adjust the pH to 5.5-8.0 with soda, continue to react for 2 hours after the addition, and the diazonium salt will disappear completely, while keeping the system temperature at 0-10°C.

[0085]

[0086] (2) Primary condensation of coupling components and cyanuric chloride

[0087] In a 1000ml flask, add 50 parts (parts by mass) of ice to the coupling feed solution, then add it to 18.5 parts (100 pe...

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Abstract

The invention discloses a reactive red dye as well as preparation and application thereof. The reactive red dye has a structure shown by formula (I), where X is F or Cl; A is mono-substituted or polysubstituted phenyl or naphthyl with a -SO2CHCH2 or -CONHC2H4SO2CHCH2 group; D is mono-substituted or polysubstituted phenyl with a -SO2CHCH2 or -CONHC2H4SO2CHCH2 group; R is C1-5 alkyl, phenyl or phenyl substituted C1-3 alkyl; and M is hydrogen and alkali metal. The reactive red dye disclosed by the invention has novel structure, excellent performance and good color fixing rate and color fastness and can effectively reduce the consumption of resources; after dyeing, the reactive red dye has perfect stability and bright color light and can be widely applied to the dyeing technologies such as dip dyeing, pad dyeing and inkjet printing of cotton fiber products including polyester cotton, hemp and artificial cotton; and moreover, the production cost is low, and the reactive red dye can be promoted and applied in a large scale.

Description

technical field [0001] The invention belongs to the field of fine chemicals, in particular to a reactive dye, in particular to a reactive red dye, a preparation method thereof and an application in cotton fiber printing and dyeing. Background technique [0002] Reactive dyes are also called reactive dyes. The molecule contains chemically active groups, which can react with cotton, wool and other fibers to form co-bond dyes in aqueous solution. Although the dual reactive groups can improve the performance of the dye, there are some disadvantages, such as poor solubility of reactive red B-6BF, not bright shade, low color fixation rate, and poor washing fastness. The structure of B-6BF red is as follows: [0003] [0004] Reactive dyes with multiple reactive groups have a better color fixation rate than reactive dyes with single reactive groups, but blindly stacking reactive groups has no practical significance for the dye itself, it will only increase the cost of dye prod...

Claims

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Application Information

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IPC IPC(8): C09B62/51D06P1/384D06P3/66
CPCC09B62/51D06P1/384D06P3/666
Inventor 苏金奇鞠苏华张卫平王国民黄磊陈爱民周沈勇赵卫国
Owner TAIXING JINYUN DYESTUFF
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