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Purple disperse dye with high washing fastness and sublimation fastness and preparation method of purple disperse dye

A technology of sublimation fastness and disperse dyes, applied in chemical instruments and methods, dyeing methods, azo dyes, etc., can solve the problems of unsatisfactory sublimation fastness and achieve the effect of high washing fastness

Active Publication Date: 2015-03-11
HANGZHOU FLARIANT SPECIALTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although the washing fastness of these dyes has been greatly improved, the sublimation fastness is not ideal

Method used

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  • Purple disperse dye with high washing fastness and sublimation fastness and preparation method of purple disperse dye
  • Purple disperse dye with high washing fastness and sublimation fastness and preparation method of purple disperse dye
  • Purple disperse dye with high washing fastness and sublimation fastness and preparation method of purple disperse dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Preparation of diazonium salt

[0048] In a 250ml four-necked flask with stirring, adding 30 grams of concentration is 99% acetic acid, 15 grams of concentration is 99% propionic acid, 15g concentration is 98% sulfuric acid, and slowly adding 20.4g N- Methyl-4-amino-5-cyanophthalimide (purity 98.0%), and stir at this temperature until the solid is completely dissolved (generally 1 hour can be completely dissolved), and the ice-salt bath is cooled to -5 degree, control -10 degrees to 0 degrees and slowly add a nitrosylsulfuric acid solution with a percentage of 13.5g (the percentage refers to the amount converted to 100%, that is, the amount of nitrosylsulfuric acid contained in the solution), The dropwise addition time is 1-2h. After the dropwise addition, continue to keep warm and stir for 3h. Use starch potassium iodide test paper to test in ice water. If it turns blue, stop stirring for later use.

[0049] 2. Coupling reaction

[0050] In the 2000ml large beaker...

Embodiment 2-6

[0053] Synthetic structure (I-2) to structure (I-6) according to the operation method of embodiment 1

[0054]

[0055]

Embodiment 7

[0056] Embodiment 7: dyeing embodiment

[0057] Each take 2 grams of the disperse dyes with high washing fastness and high light fastness obtained in Examples 1-6, disperse them in 500 milliliters of water, mix with 60 milliliters of water after absorbing 20 milliliters, adjust the pH of the bath with acetic acid 5. At the same time when the temperature is raised to 70°C, 2 grams of polyester cloth is put into it for dyeing, and the temperature is raised from 70°C to 130°C within 30 minutes, and the temperature is kept for 45 minutes, and sampling starts when it is cooled to 90°C. Get dyed fabrics No. 1 to No. 9, and use national standards GB / T3921-1997, GB / T3920-1997, GB / T8427-1998, GB / T5718-1997 to test their washing resistance, rubbing fastness, sun resistance and sublimation resistance respectively Fastness and diffusion properties, the results are shown in Table 1.

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Abstract

The invention relates to a purple disperse dye with high washing fastness and sublimation fastness, as well as preparation and application of the purple disperse dye. The purple disperse dye with the high washing fastness and the sublimation fastness adopts the structure as shown in formula (I) in the Specification; in the formula, R1 is methyl or ethyl, R2 is ethyl, allyl or benzyl, and R3 is methyl, ethyl or phenyl. The dye is excellent in washing fastness, non-toxic, free of carcinogenicity, anti-allergy, safe and environment-friendly; the preparation method of the dye is low in discharge of three wastes, simple in synthetic process, low in cost, and suitable for requirements on market development and industrial production. Particularly, the research indicates that as a phthalimide structure and ester groups in the dye molecules are subjected to a hydrolysis reaction during the soaping link of dyeing process to generate hydrolysate products with anions, the products are dissolved in water easily, and the final expression result is that flooding is easy to wash away, the wet color fastness of the fabric can be greatly improved.

Description

technical field [0001] The invention relates to a purple disperse dye with high washing fastness and sublimation fastness and its preparation and application. Background technique [0002] With the recent rapid development of polyester fibers, superfine fibers and superfine denier fibers have appeared. Because of their extremely small linear density and high specific surface area, their fabrics have high coverage, soft touch and comfortable wearing. It has become a hot textile raw material for domestic and foreign textile enterprises to develop high-grade textiles. Although the current conventional disperse dyes can barely be dyed, the molecular attraction between the dye and the fiber is greatly reduced. The most obvious is that the dye uptake rate of the dye is greatly reduced, and the fastness of all aspects of the dyed fabric has decreased to varying degrees. , especially the impact on washing fastness is the most obvious. [0003] Disperse dyes mainly dye hydrophobic ...

Claims

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Application Information

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IPC IPC(8): C09B29/33C09B29/036C09B67/38D06P1/18D06P3/54
Inventor 李百春
Owner HANGZHOU FLARIANT SPECIALTY
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