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Benzisothiazole azopyridone disperse dyes and their preparation and use as fiber recognition reagents

A technology of benzisothiazole azopyridone and disperse dyes, which is applied in the direction of azo dyes, monoazo dyes, organic dyes, etc., and can solve the problems of counterfeit and inferior products, complex components, and agglomeration

Inactive Publication Date: 2014-10-01
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Known coloring agents with certain applications are composed of a variety of dyes, complex components
Especially when anionic dyes are mixed with cationic dyes, different degrees of aggregation are prone to occur during preparation, storage, and use, which is not stable enough.
Moreover, the disperse dye components have coloring ability on synthetic fibers and semi-synthetic fibers, and the color difference of the colorant composed of mixed dyes is not obvious on different fibers. For example, the HI-1 fiber identification colorant is jade on polyester. Red, orange for acetate, sauce red for nylon, peach red for acrylic fiber, red lotus for wool, etc. are all red tones. If the operation is not done properly or the dyeing is insufficient, it is still easy to confuse
[0006] Consumers of clothing fabrics are often troubled by counterfeit and shoddy products. They need to quickly and easily identify the types and approximate contents of common fibers at home, which is currently difficult to achieve.

Method used

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  • Benzisothiazole azopyridone disperse dyes and their preparation and use as fiber recognition reagents
  • Benzisothiazole azopyridone disperse dyes and their preparation and use as fiber recognition reagents
  • Benzisothiazole azopyridone disperse dyes and their preparation and use as fiber recognition reagents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1－4

[0057] Weigh 0.227g (3.3mmol) NaNO 2 , add 2.5ml (39.6mmol, 1:12) concentrated sulfuric acid, stir quickly, when heated to 65-70 degrees (the temperature should not exceed 80 degrees), stop heating, and cool down naturally, if there is salt precipitation, you can heat it slightly to dissolve it , to obtain nitrosylsulfuric acid. Weigh 0.585g (3mmol) of 5-nitro-benzisothiazol-3-amine, dissolve it in the above solution, and then add 2ml of concentrated sulfuric acid to obtain a dark brown solution in which all solids are dissolved.

[0058] Take 5ml of concentrated sulfuric acid and 7.5ml of glacial acetic acid, mix it into a 40% sulfuric acid / acetic acid solution in a 250ml three-necked bottle, add a little ice cubes, and put it in an ice-salt bath. Add the above-prepared dark brown solution dropwise into the sulfuric acid solution, and stir rapidly. After the dropwise addition, react for 10-15 minutes.

[0059] Weigh 3mmol of 1-N-R 2 -6-Hydroxy-4-methyl-2-pyridone was put ...

Embodiment 5

[0066] Mix 2 grams of dispersant Reax83A, 10 grams of ammonolysis of polymer dispersant styrene-maleic anhydride resin, 30 grams of wetting agent and antifreeze agent ethylene glycol, 0.1 gram of fungicide 5-chloro-2-methyl- 4-isothiazolin-3-one, 0.1 gram of defoamer phenylethyl alcohol oleate and 47.8 grams of water are mixed uniformly with a high-speed mixer, and 10 grams of the dye compound shown in formula (I) are added to the mixed solution during stirring . Then add corundum, and use a grinder to grind for 40 hours at a speed of 3500 rpm to obtain a uniformly dispersed and stable color paste. Take by weighing 30 grams of the color paste, add 9 grams of ethylene glycol, 6 grams of diethylene glycol, 3 grams of glycerol, 0.3 grams of surfactant AEO-9, 11.7 grams of water, after stirring at normal temperature, adopt the aperture of Filter through a 0.45-micron filter to obtain a fiber-identifying colorant liquid product.

Embodiment 6

[0068] 50.0 grams of the dye compound represented by formula (I), 70 grams of dispersant Reax85A, and 200 grams of pure water are micronized (dispersed) with a sand mill until the particle size is less than 1 micron, and then spray-dried to obtain fibers Identify solid products of colorants.

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PUM

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Abstract

The invention discloses a benzoisothiazoleazopyridone disperse dye, which is a compound I with the structure as shown in the specification. The benzoisothiazoleazopyridone disperse dye and hydrogen connected with hetero atoms can generate conjugated migration among a benzoisothiazole ring, azo and a pyridine ring under a certain pH value, so that yellow color, red color and blue color can be displayed, the color-phase span is large and the colors are various. Therefore, the benzoisothiazoleazopyridone disperse dye disclosed by the invention can be used for preparing a fiber recognition reagent. The invention further discloses the preparation method of the benzoisothiazoleazopyridone disperse dye.

Description

technical field [0001] The invention relates to a benzisothiazole azopyridone disperse dye and its application in identifying common textile fibers. Background technique [0002] Fiber identification is extremely important for quality inspection and production control in fiber processing, textile, printing and dyeing, etc. Many people have conducted research, so many identification methods have been produced. Generally speaking, fiber identification includes identification of morphological characteristics and identification of physical and chemical properties. The identification of morphological characteristics is usually carried out by visual inspection and microscope observation. There are many methods for identifying physical and chemical properties, including combustion method, dissolution method, reagent coloring method, melting point method, specific gravity method (density gradient method), birefringence method, fluorescence method, X-ray diffraction method and infra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/42G01N21/29
Inventor 黄伟陈晓春王银歌
Owner NANJING UNIV