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Sapphire-blue disperse dye with high washing fastness and sublimation fastness and preparation method thereof

A technology of sublimation fastness and disperse dyes, applied in chemical instruments and methods, dyeing methods, azo dyes, etc., can solve problems such as unsatisfactory sublimation fastness

Active Publication Date: 2015-03-25
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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  • Sapphire-blue disperse dye with high washing fastness and sublimation fastness and preparation method thereof
  • Sapphire-blue disperse dye with high washing fastness and sublimation fastness and preparation method thereof
  • Sapphire-blue disperse dye with high washing fastness and sublimation fastness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Preparation of diazonium salt

[0054] Add 40g of phosphoric acid with a concentration of 85% and 20g of sulfuric acid with a concentration of 98% into a 250ml four-necked flask with stirring, and slowly add 21.5g of N-methyl-4-amino-3,5- Dicyanophthalimide (purity 98.0%), stir until the solid dissolves completely, cool down to -12 degrees, slowly add the nitrosyl sulfuric acid solution with a percentage of 13.5g (the percentage means that it is converted into 100% of the amount, that is, the amount of nitrosylsulfuric acid contained in the solution), the temperature of the addition process is controlled not higher than -5 degrees, the dropwise addition time is 2-3h, after the dropwise addition is completed, continue to stir for 1h, and use starch potassium iodide test paper Test in ice water, if it turns blue, stop stirring and set aside.

[0055] 2. Coupling reaction

[0056]In the 2000ml large beaker with stirring, add respectively 300g bottom water, 10g concent...

Embodiment 2-6

[0059] Synthetic structure (I-2) to structure (I-6) according to the operation method of embodiment 1

[0060]

[0061]

Embodiment 7

[0062] Embodiment 7: dyeing embodiment

[0063] 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 sapphire-blue disperse dye with high washing fastness and sublimation fastness and a preparation method and application thereof. The sapphire-blue disperse dye with high washing fastness and sublimation fastness has a structure represented by a formula (I) shown in specifications, wherein R1 is methyl or ethyl, R2 is ethyl, allyl or benzyl, and R3 is methyl, ethyl or phenyl. The dye has excellent washing fastness, is non-toxic, non-carcinogenic, anti-allergy, safe and environment-friendly, is low in emission of waste gases, waste water and waste residues, simple in synthesis process and low in manufacturing cost, and meets the needs on market development and industrial production; particularly, discovered by researches, a phthalimide structure and an ester group in a dye molecule can undergo hydrolysis reaction in a soaping link of a dyeing process to form hydrolyzates with anions, the hydrolyzates are easily dissolved in water, and the final performance result is that loose colors are easily washed off and the wet fastness of fabrics is greatly improved.

Description

technical field [0001] The invention relates to a sapphire blue 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 hydro...

Claims

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Application Information

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IPC IPC(8): C09B29/036C09B29/09D06P1/18D06P3/54
Inventor 李百春
Owner HANGZHOU FLARIANT SPECIALTY
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