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Reactive dye, reactive dye ink and preparation method and application of reactive dye ink

A technology of reactive dyes and dyes, applied in the direction of reactive dyes, applications, dyeing methods, etc., can solve the problems of reactive dye inks that have not yet been seen, and achieve the effect of improving color fixing rate, simple dyeing and color fixing operation, and good color fixing rate

Active Publication Date: 2021-02-09
浙江理工大学上虞工业技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Have not yet seen the reactive dyestuff with diaziridine group as active group and the reactive dyestuff ink with this kind of reactive dyestuff as composition

Method used

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  • Reactive dye, reactive dye ink and preparation method and application of reactive dye ink
  • Reactive dye, reactive dye ink and preparation method and application of reactive dye ink
  • Reactive dye, reactive dye ink and preparation method and application of reactive dye ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: the synthesis of compound 1

[0062]

[0063] Add 20 mmol (about 6.94 g) of 3-amino-1,5-naphthalene disulfonate sodium, 30 ml of deionized water, and 10 ml of concentrated hydrochloric acid into a three-necked flask, put it in an ice-water bath and stir evenly, cool down to below 5°C, and add 24 mmol (about 1.66 g) of sodium nitrite in 10 ml of an aqueous solution was stirred and reacted in an ice-water bath for 30 min. Add urea to eliminate excess nitrous acid, and use starch potassium iodide test paper to detect until the blue color does not change, and obtain a diazonium salt solution; keep it in an ice-water bath for later use.

[0064] In another three-necked flask, add 20mmol (about 2.14g) of 3-methylaniline and 20ml of deionized water, after stirring evenly, add all the diazonium salt solutions prepared above dropwise under ice-water bath conditions (the dropping time is 10 ~30 minutes), after the dropwise addition, continue to stir in the ice-w...

Embodiment 2

[0065] Embodiment 2: the synthesis of dyestuff (II)

[0066] Add a stir bar, 5mmol (about 2.32g) of compound 1, 5mmol (about 1.39g) of raw material A, 10mmol (about 1.382g) of potassium carbonate, and N,N-dimethylformamide (DMF ) 30ml, put the three-neck flask in an oil bath, stir, raise the temperature to 80°C and keep it for 4h; use thin-layer chromatography to monitor, and stop the reaction when the raw materials are consumed.

[0067] After cooling to room temperature, ethyl acetate (60ml) was added, a precipitate precipitated out, and the dye (II) was obtained by filtration. Yellow solid, 1.98g, yield 59.7%.

[0068]

[0069] DMF-ether method: Dissolve 1g of dye in 10ml of DMF, filter to remove insoluble matter, add 40ml of ether to the filtrate, precipitate and filter to obtain solid dye, repeat the above operation twice; further purify for substance detection.

[0070] 1 H NMR (DMSO-d 6 ,400MHz)δ9.19(s,1H),9.11(d,J=7.2Hz,1H),8.83(s,1H),7.96-7.88(m,2H),7.72(d,J=7....

Embodiment 3

[0072] Embodiment 3: the synthesis of compound 2

[0073]

[0074] Add 20mmol (about 1.86g) of aniline, 30ml of deionized water, and 10ml of concentrated hydrochloric acid into a three-necked flask, put it in an ice-water bath and stir evenly, cool down to below 5°C, and add 10ml of an aqueous solution containing 24mmol (about 1.66g) of sodium nitrite , Stir the reaction in an ice-water bath for 30 min. Add urea to eliminate excess nitrous acid, and use starch potassium iodide test paper to detect until the blue color does not change, to obtain a diazonium salt solution, keep it in an ice-water bath, and wait for use.

[0075] Add 20mmol (about 7.26g) of H acid and 20ml of deionized water into another three-necked flask, add potassium carbonate to make the pH value of the solution reach 9-10, stir well and add all the above-mentioned heavy For the nitrogen salt solution, add potassium carbonate during the dropwise addition to maintain the pH value of the solution at 9-10, ...

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Abstract

The invention discloses a reactive dye based on a diaziridine group as well as a preparation method and use method of the reactive dye. The invention also discloses reactive dye ink for digital ink-jet printing, and the ink is prepared from the reactive dye based on the diaziridine group. The reactive dye ink comprises 14 to 16 percent of the reactive dye, 9 to 11 percent of surfactant, 19 to 21 percent of polyhydric alcohol, 9 to 11 percent of urea, 0.8 to 1.2 percent of dispersing agent, 0.15 to 0.25 percent of preservative, 0.15 to 0.25 percent of pH regulator and the balance of deionized water. The invention also discloses a use method of the reactive dye ink for digital ink-jet printing. The reactive dye based on the diaziridine group can be chemically reacted with cotton fibers and silk fibers to form covalent bonds so as to be firmly combined.

Description

technical field [0001] The invention belongs to the fields of fine chemical industry and textile printing and dyeing, and relates to a reactive dye based on a diaziridine group, a reactive dye ink for digital inkjet printing, a preparation method and an application method thereof. Background technique [0002] When using conventional reactive dyes to dye cotton fabrics and silk fabrics, and using reactive dye inks to print cotton, wool, silk and other fiber fabrics using digital inkjet printing technology, it is usually necessary to add alkaline substances for color fixation. To achieve the purpose of forming covalent bonds between dyes and fibers to improve color fastness. Reactive dyes represented by dichloro-s-triazine dyes and β-vinyl sulfone sulfate dyes have a fixation rate of only 50% to 80%, and the fixation rate is low. At the same time, the active groups have problems such as easy hydrolysis and poor storage stability. . (Reference: Acta Chemical Industry, 2019, ...

Claims

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Application Information

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IPC IPC(8): C09B62/78C09B62/80C09B62/825C07D229/02C09D11/328D06P1/384D06P3/10D06P3/66
CPCC09B62/78C09B62/80C09B62/825C07D229/02C09D11/328D06P1/384D06P3/666D06P3/10
Inventor 江华郭广落崔志华陈维国
Owner 浙江理工大学上虞工业技术研究院有限公司
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