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Preparation and application of a salt-free and alkali-free dyeing type reactive dye

A compound and reaction technology, applied in the direction of reactive dyes, dyeing methods, azo dyes, etc., can solve the problems of increased cost and complicated dyeing process, and achieve the effects of less sewage discharge, simple dyeing process, and low dyeing cost

Inactive Publication Date: 2016-08-17
江苏知更鸟科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of salt and alkali are used in the dyeing of reactive dyes, which not only complicates the dyeing process and increases the cost, but also causes serious ecological problems

Method used

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  • Preparation and application of a salt-free and alkali-free dyeing type reactive dye
  • Preparation and application of a salt-free and alkali-free dyeing type reactive dye
  • Preparation and application of a salt-free and alkali-free dyeing type reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present embodiment provides the preparation method of formula (I) compound:

[0030] The specific preparation method is as follows:

[0031] A, the synthesis of compound (II)

[0032] At room temperature, add 300mL of acetonebenzene into a 500mL three-neck flask, stir rapidly and add 11.2gl-aminoanthraquinone and 12.9g of cyanuric chloride in sequence. The reaction solution was kept at pH 5.5-6 by adding K2CO3 solution, stirred at room temperature for 10 hours, filtered, washed with acetone and petroleum ether, and vacuum-dried at 60°C to obtain 17.4 g of a khaki reaction product with a yield of 93.9%.

[0033] B, the synthesis of compound (III)

[0034] Dissolve 7.4g of compound (II) and 5mL of N,N-dimethyl-1,3-propanediamine in 150mL of DMF for reaction, raise the temperature to 65°C, stir and reflux for 3 hours, and rotary evaporate to obtain the crude product, dissolve the product with ethanol , filtered, and the ethanol was evaporated by rotary evaporation t...

Embodiment 2

[0042] The present embodiment provides the dyeing method of formula (I) compound to cotton fabric:

[0043] The specific dyeing method is as follows:

[0044] The dosage of compound (I) is 1.0% (o.w.f), the bath ratio is 1:50, the cotton fabric and the dye liquor are stirred and dyed at room temperature for 10 minutes, then the temperature is raised to 100°C at a rate of 2°C / min, and kept for 40 minutes. Then the cotton fabric was taken out, washed with water, soaped (2g / L soap flakes, 90°C, 5min), washed with water, dried, the dye uptake rate was 98.8%, and the color fixation rate was 77.8%.

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Abstract

The invention relates to a salt-free and alkali-free dyeing type activated dye and a preparation method thereof. The salt-free and alkali-free dyeing type activated dye is a compound having the structure of the general formula (1) (shown in the specification). By virtue of the salt-free and alkali-free dyeing type activated dye, the environmental pollution can be reduced, and the production cost can be lowered; the salt-free and alkali-free dyeing type activated dye is high in product solubility, good in dye fastness, high in dye rate and color fixation, excellent in application performance and convenient to use and is an environment-friendly dye suitable for clean production.

Description

technical field [0001] The invention relates to the technical field of reactive dyes, in particular to a salt-free and alkali-free dyeing reactive dye. Background technique [0002] The traditional reactive dye exhaust dyeing process mainly has two steps: first, the reactive dye is adsorbed to the fiber under the action of salt, and then the dye and fiber form a covalent bond under the action of alkali. A large amount of salt and alkali are used in the dyeing of reactive dyes, which not only complicates the dyeing process and increases the cost, but also causes serious ecological problems. Environmental issues are getting more and more attention, and the environment-friendly processing technology of textile printing and dyeing processing has become a research hotspot, among which the salt-free dyeing and alkali-free color fixing of reactive dyes are one of the research focuses. Contents of the invention [0003] The technical problem to be solved by the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/06D06P1/382D06P3/66
Inventor 张伟张艳张丹丽
Owner 江苏知更鸟科技服务有限公司
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