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Green reactive dye based on mono-H acid triazo structure as well as preparation and application of green reactive dye

A technology of reactive dyes and trisazo, which is applied in the field of green reactive dyes and its preparation, can solve problems such as insufficient lifting performance and color fastness, and poor compatibility, and achieve novel shades, good strength performance and color fastness, and avoid The effect of poor compatibility

Inactive Publication Date: 2020-03-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by this invention is to provide a kind of green reactive dye based on mono-H acid trisazo structure and its preparation method and application, to overcome the color intensity, lifting power performance and color fastness of green reactive dye in the prior art Insufficient and poor compatibility of the two dye molecules of compound green reactive dyes in color matching

Method used

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  • Green reactive dye based on mono-H acid triazo structure as well as preparation and application of green reactive dye
  • Green reactive dye based on mono-H acid triazo structure as well as preparation and application of green reactive dye
  • Green reactive dye based on mono-H acid triazo structure as well as preparation and application of green reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The synthetic technique of the green reactive dye with following structure:

[0048]

[0049] (1) Preparation of diazonium salt of anthranilsulfonic acid: Accurately weigh 17.3g (0.10mol) of anthranilsulfonic acid, configure it into an aqueous solution with a mass fraction of 20%, stir for 0.5h until the mixture is uniform, then cool down to 0~ 5°C, add 10.0g (0.10mol) of concentrated hydrochloric acid with a mass fraction of 37.5%, and stir for 10 minutes, then slowly add 6.969g (0.101mol) of sodium nitrite dropwise to prepare a 30% aqueous solution. React at 5°C for 2 hours, and use sulfamic acid to eliminate excess nitrous acid after the reaction.

[0050] (2) Coupling reaction: Accurately weigh 15.1g m-ureidoaniline, configure it into an aqueous solution with a mass fraction of 20%, add 1.7g NaHCO 3 Dry powder, stirred for 0.5h, and cooled to 0 ~ 5 ° C, the diazonium salt in step (1) was poured into the m-ureidoaniline solution, and the mass fraction was 15% Na ...

Embodiment 2

[0058] The synthetic route of the reactive dye of this embodiment is the same as that of Example 1, and the raw material 17.3g (0.10mol) anthranilic acid is changed into 27.5g (0.10mol) aniline-2,5-disulfonic acid in Example 1, and all the other are Same as Example 1, a green reactive dye with the following structural formula was obtained with a yield of 74.9% (yield calculated by aniline-2,5-bissulfonic acid). After the dye is purified by multiple recrystallizations from a mixture of ethanol and water (2:1), its infrared spectrum can be seen in figure 2 , the data are as follows: 3417.3, 1563.3, 1483.9, 1400.9, 1366.5, 1337.6, 1175.8, 1171.0, 1129.4, 1042.7, 1012.4, 894.6, 821.9, 796.0cm -1 .

[0059]

Embodiment 3

[0061] The synthetic route of the active dye of this example is the same as that of Example 1, and the raw material 17.3g (0.10mol) of anthranilic acid in Example 1 is replaced with 38.3g (0.10mol) of 2-naphthylamine-3,6,8-tri Sulfonic acid, all the other are identical with embodiment 1, obtain the green reactive dye of structural formula following, productive rate is 76.5% (calculate productive rate with 2-naphthylamine-3,6,8-trisulfonic acid). After the dye is purified by multiple recrystallizations from a mixture of ethanol and water (2:1), its infrared spectrum can be seen in image 3 , the data are as follows: 3426.8, 1556.1, 1530.2, 1479.2, 1400.8, 1337.2, 1299.9, 1174.2, 1129.8, 1081.1, 1038.7, 1015.2, 822.6cm -1 .

[0062]

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Abstract

The invention relates to a green reactive dye based on a mono-H acid triazo structure as well as preparation and application of the green reactive dye. The structural formula of the dye is shown as(I). The preparation method comprises the following steps: diazonium salt preparation, coupling liquid preparation, primary condensation liquid preparation, secondary condensation liquid preparation, secondary condensation liquid diazonium salt preparation, acid coupling product preparation and green reactive dye preparation. The preparation method has the advantages that the intramolecular color matching performance of orange and blue chromogen is completed, and the problem of poor compatibility during the dye intermolecular color matching is avoided.

Description

technical field [0001] The invention belongs to the field of reactive dyes and their preparation and application, in particular to a green reactive dye based on a mono-H acid trisazo structure and a preparation method and application thereof. Background technique [0002] Reactive dyes have the advantages of bright color and complete chromatogram, good wet fastness, low synthesis cost and strong applicability. The structure contains reactive groups that can covalently bond with hydroxyl groups on cellulose fibers. With the increase of people's demand for colored light of reactive dyes, there are more and more compound green reactive dyes, most of which are made of single dye blue and yellow reactive dyes. However, dyes of different colors have different molecular structures, and their lifting power and dyeing rate on fabrics are also quite different. There are often a series of problems such as unstable shading, poor dyeing and printing reproducibility, and poor color fastne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/09D06P1/382D06P3/66D06P3/10
CPCC09B62/09D06P1/382D06P3/10D06P3/663
Inventor 谢孔良侯爱芹张红娟高爱芹
Owner DONGHUA UNIV
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