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Blue disperse dye and its composition, preparation method and application

A disperse dye and composition technology, applied in the chemical field, can solve the problems of skin irritation, environmental protection, and low light fastness, and achieve the effects of low dye cost, good dyeing performance, and considerable development prospects

Active Publication Date: 2017-04-19
PENGLAI JIAXIN DYES & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The above-mentioned dyes dyed acetate fibers have bright shades and excellent performance, but the light fastness is not high, especially the above-mentioned dyes are found to be irritating to the skin, so they are listed as non-environmentally friendly dyes

Method used

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  • Blue disperse dye and its composition, preparation method and application
  • Blue disperse dye and its composition, preparation method and application
  • Blue disperse dye and its composition, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The chemical structure of the dyestuff of embodiment 1 of the present invention is as follows:

[0040]

[0041] Its preparation method is:

[0042] Dissolve 19.6 grams of 3-amino-5-nitro-2.1 benzisothiazole in 70 milliliters of 93-98% sulfuric acid, then add 40% nitrosyl sulfuric acid dropwise at 0-30 degrees, and keep the temperature until the end point. Obtained diazo liquid, to be coupled.

[0043] Dissolve 25 grams of N-ethyl-N-3-chloro-2-propanol-m-toluidine in a solution of 10 grams of sulfuric acid and 500 ml of water, add an appropriate amount of crushed ice, and then add the above-mentioned Diazo solution, keep warm until the diazo component disappears as the end point, filter and wash until neutral, and obtain a dye filter cake with a dry product of about 38 grams. After commercial processing, the dyed polyester fiber is brilliant blue. Detected λ max =620nm.

Embodiment 2

[0045] The chemical structure of embodiment 2 dyestuff of the present invention is as follows:

[0046]

[0047] Dissolve 19.6 grams of 3-amino-5-nitro-2.1 benzisothiazole in 70 milliliters of 93-98% sulfuric acid, then add 40% nitrosyl sulfuric acid dropwise at 0-30 degrees, and keep the temperature until the end point. Obtained diazo liquid, to be coupled.

[0048] Dissolve 31 grams of N-p-methylbenzyl-N-3-chloro-2-propanol-m-toluidine in a solution of 10 grams of sulfuric acid and 500 milliliters of water. After stirring to completely dissolve, add an appropriate amount of crushed ice to cool down to below 0 degrees. Slowly add the diazonium salt into the coupling solution, and keep the reaction at 0-5 degrees until the diazonium salt disappears. Filter water and wash to neutral to obtain a blue dye filter cake. After commercial processing, dyed polyester fiber is bright blue. Detected λ max = 616nm.

Embodiment 3

[0050] The chemical structure of embodiment 3 dyestuff of the present invention is as follows:

[0051]

[0052] Dissolve 19.6 grams of 3-amino-5-nitro-2.1 benzisothiazole in 70 milliliters of 93-98% sulfuric acid, then add 40% nitrosyl sulfuric acid dropwise at 0-30 degrees, and keep the temperature until the end point. Obtained diazo liquid, to be coupled.

[0053] Dissolve 30 grams of N-butyl-N-3-chloro 2-acetoxypropylaniline in a solution of 10 grams of 93% sulfuric acid and 500 milliliters of water, stir to completely dissolve, add an appropriate amount of ice, and cool down to below 0 degrees, Slowly add diazonium solution, keep warm at 0-5 degrees until the diazonium salt disappears, filter and wash with water until neutral. Filter cake commercial processing, dyed polyester fiber is bright blue. Detected λ max = 613nm.

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Abstract

The invention provides a blue disperse dye, and a composition, a preparation method and an application thereof. The blue disperse dye is one of compounds represented by the structural general formula (I). The blue disperse dye composition is a mixture of two or more than two of the compounds represented by the structural general formula (I). The preparation method comprises the steps: dissolving 3-amino-5-nitro-2,1 benzisothiazole in sulfuric acid, dropping nitrosyl sulfuric acid, and carrying out a reaction to the end point, to obtain a diazonium solution; dissolving a compound represented by the structural general formula (II) in a sulfuric acid aqueous solution, stirring to completely dissolving, controlling the temperature of the system to be 0 DEG C or less, slowly adding the diazonium solution, carrying out a reaction at the temperature of 0-5 DEG C until diazonium salt is disappeared, filtering, and washing with water to be neutral. The blue disperse dye is applied in a polyester fabric or an acetate fiber fabric for dyeing. The blue disperse dye and the composition thereof provided by the invention have the advantages of bright color and luster, deep and strong color supply, good sublimation fastness, good levelness, and excellent dyeing performance improvement, can be used for dark color dyeing, and is suitable for high temperature and high pressure and hot melt dyeing processes.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a blue disperse dye and its composition, preparation method and application. Background technique [0002] There are many known varieties of disperse blue, among which the representative ones, which are well-known at home and abroad, are: [0003] C.I. Disperse Blue 56, structural formula: [0004] [0005] C.I. Disperse Blue 79, structural formula: [0006] [0007] The former has pure and bright shade, good fastness and good dyeing performance, and is suitable for high temperature and high pressure dyeing process. However, the sublimation fastness is low, and it is not suitable for continuous hot-melt dyeing. The dye has an anthraquinone structure and low color strength. It is suitable for dyeing medium and light colors, and its lifting ability is poor, so it is not suitable for dyeing dark colors. And the preparation process is complicated, the waste liquid is much, and it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/045C09B67/22C09B67/38D06P1/18D06P1/19D06P3/54D06P3/60
CPCC09B29/0088C09B67/0051C09B67/008D06P1/18D06P1/19D06P3/54D06P3/6041
Inventor 王喆王淑香杨军海
Owner PENGLAI JIAXIN DYES & CHEM
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