Active orange dye for low temperature dyeing and preparation method thereof

A low-temperature dyeing and reactive technology, applied in the field of low-temperature dyeing reactive orange dye and its preparation, can solve the problems of poor levelness and more residual liquid, and achieve the effects of less dyeing residual liquid, high solubility and stable reaction performance.

Active Publication Date: 2016-11-02
HUBEI HUALI DYESTUFF INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce environmental pollution and respond to national energy-saving and emission-reduction policies, the reactive orange dye in the present invention breaks the routine and uses lower temperature dyeing, which is more stable in reaction performance than traditional craft products, and the production cost is lower, solving the problem of poor level dyeing of traditional orange reactive dyes, It has the advantages of low production cost, stable reaction performance, good level dyeing, high color fixing rate, good solubility, and less sewage discharge, etc.

Method used

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  • Active orange dye for low temperature dyeing and preparation method thereof
  • Active orange dye for low temperature dyeing and preparation method thereof
  • Active orange dye for low temperature dyeing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 1) Aniline 2,5-disulfonic acid diazonium: Add 54 parts of hydrochloric acid (calculated as hydrogen chloride) to 251 parts of aniline 2,5-bissulfonic acid and stir for 3 hours, then add ice to cool down at 0-3°C, then add 72 Parts of sodium nitrite (made into an aqueous solution with a mass percentage concentration of 30%), maintained at 3-7°C for 4 hours to obtain aniline 2,5-bissulfonic acid diazonium compound;

[0036] 2) Dissolution of J acid: add 236 parts of J acid into water, beat for 1 hour at 15-20°C to dissolve, and then adjust the pH value to 6.5 with sodium hydroxide solution;

[0037] 3) Primary coupling: Add aniline 2,5-bissulfonic acid diazonium compound to J acid solution, control the temperature at 0-3°C, react for 4 hours, adjust pH=3.5 with baking soda dry powder, and obtain primary coupling compound after complete reaction ;

[0038] 4) Secondary diazo: Add 361 parts of sulfonated para-ester to 43 parts of hydrochloric acid and stir for 2 hours, the...

Embodiment 2

[0044] 1) Aniline 2,5-disulfonic acid diazonium: Add 54 parts of hydrochloric acid (calculated as hydrogen chloride) to 251 parts of aniline 2,5-bissulfonic acid and stir for 3 hours, then add ice to cool down at 0-3°C, then add 72 Parts of sodium nitrite (30% solution), maintained at 3-7°C for 4 hours to obtain aniline 2,5-bissulfonic acid diazonium compound;

[0045] 2) γ-acid dissolution: add 236 parts of γ-acid into water, beat for 1 hour to dissolve at 15-20°C, and then adjust the pH value to 6.5 with sodium hydroxide solution;

[0046] 3) Primary coupling: add aniline 2,5-bissulfonic acid diazonium compound into the γ-acid solution, control the temperature at 0-3°C, react for 4 hours, adjust the pH=3.5 with baking soda dry powder, and obtain the primary coupling compound after the reaction is complete ;

[0047] 4) Secondary diazo: Add 361 parts of sulfonated para-ester to 43 parts of hydrochloric acid and stir for 2 hours, then add ice to cool down at 0-5°C, then add 6...

Embodiment 3

[0053] 1) Aniline 2,5-diazonium disulfonic acid: Add 55 parts of hydrochloric acid (calculated as hydrogen chloride) to 253 parts of aniline 2,5-bissulfonic acid and stir for 2 hours, add ice to cool down at 0-3°C, and then add 70 Parts of sodium nitrite (30% solution), maintained at 3-7°C for 3 hours to obtain aniline 2,5-bissulfonic acid diazonium compound;

[0054] 2) Gamma acid dissolution: add 239 parts of gamma acid into water, beat for 1 hour at 15-20°C to dissolve, and then adjust the pH value to 7.0 with sodium hydroxide solution;

[0055] 3) Primary coupling: add aniline 2,5-bissulfonic acid diazonium compound into the γ-acid solution, control the temperature at 0-3°C, react for 5 hours, adjust the pH=4.0 with baking soda dry powder, and obtain the primary coupling compound after the reaction is complete ;

[0056] 4) Secondary diazo: Add 365 parts of sulfonated para-ester to 43 parts of hydrochloric acid and stir for 2 hours, then add ice to cool down at 0-5°C, the...

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Abstract

The invention discloses an active orange dye for low temperature dyeing and a preparation method thereof. The structural formula of the active orange dye is as shown in the formula 1. in the formula 1, one of R1 and R2 is -NH2 and the other is H. the active orange dye is suitable for low temperature dyeing (about 40 DEG C), has stable reaction properties, good level-dyeing property and high coloring rate, and is easy to wash, and is helpful for reducing energy consumption.

Description

technical field [0001] The invention belongs to the field of dye synthesis, and in particular relates to a reactive orange dye suitable for low-temperature dyeing and a preparation method thereof. Background technique [0002] Environmental pollution and protection have become a major problem in today's society, while the dye industry is facing a severe test. The pace of social progress cannot be stopped. If enterprises want to promote long-term development under the new situation, product quality must reach a new height. [0003] Existing dyes have complex synthesis processes and produce many pollutants, which are discharged into the environment and cause pollution. Moreover, the dyeing temperature of current conventional dyes is 60-70° C. to achieve higher coloring rate and color fixation rate. High dyeing temperature will inevitably increase the energy consumption of the dyeing process. Contents of the invention [0004] In order to reduce environmental pollution and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B33/10D06P1/384D06P3/66D06P3/85
CPCC09B33/10D06P1/384D06P3/66D06P3/8219
Inventor 崔孟元梦文熊建平朱训杰
Owner HUBEI HUALI DYESTUFF INDAL
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