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A kind of liquid dye for active ink and its preparation method and application

A technology of liquid dyes and reactive inks, applied in applications, organic dyes, inks, etc., can solve problems such as poor stability, achieve high stability, low production costs, and facilitate long-term storage

Active Publication Date: 2017-11-24
浙江劲光纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because liquid dyes are easily hydrolyzed in water, and due to the limitation of solubility in the liquid state, the stability is poor. At present, there are few manufacturers in the country that can form systematic production.

Method used

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  • A kind of liquid dye for active ink and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the preparation of the synthetic protoplasm of active orange 13

[0032] (1) Disperse N-methyl J acid in water, stir for 15 minutes, adjust the pH to 7.1-7.3 with industrial liquid alkali, and obtain a clear liquid after dissolution. Add maleic anhydride dropwise to the clarified liquid, adjust the pH to 7.0-7.5 with industrial liquid alkali again, add ice to control the reaction at 30°C for 3 hours, and cool down to 20-25°C to obtain the acylation liquid for later use. , The molar ratio of N-methyl J acid to maleic anhydride is 1:1.1, and the amount of water used is 5 times the mass of N-methyl J acid.

[0033] (2) Add ice water to the diazonium reaction pot and put it into sulfonated tunic acid for beating for 1 hour, add hydrochloric acid and stir for 15 minutes, slowly add sodium nitrite solution, control the temperature ≤ 5°C, and obtain the diazonium salt for later use , the molar ratio of sulfonated torrentic acid, hydrochloric acid and sodium nitr...

Embodiment 2

[0037] The preparation of embodiment 2 reactive inks

[0038](1) the active orange 13# synthetic protoplasm that embodiment 1 obtains is adjusted back to pH 7.5-8.0 with hydrochloric acid, then leaves standstill at room temperature for 24 hours, then filters to obtain filtrate;

[0039] (2) warming up to 50 ℃ to the filtrate obtained in step (1), then adding sodium chloride to carry out salting out, wherein, the quality of sodium chloride is 1.2 times of the dry weight of the dye stock, and the salting out precipitate is obtained by press filtration filter cake;

[0040] (3) At a temperature of 25°C, add water to the filter cake obtained in step (2) for beating, wherein the amount of filter cake and water is 1g: 7.5mL, and add 3% activated carbon in the beating liquid to the dry amount The amount is used for adsorption, and the pH value is maintained at 7.5-8.5 to stand still for 12-24 hours. If there is no obvious change, use a filter press to perform pressure filtration to ...

Embodiment 3

[0045] After step (1) of this embodiment adjusts the pH to 6.0-7.0, it is left to stand directly, and other operations are exactly the same as in Example 2.

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Abstract

The invention discloses a preparation method of liquid dye for active ink.The preparation method comprises the following steps that firstly, dye synthetic raw stock fully stands, insoluble substances are separated out, and then filtering is conducted to obtain filter liquid; secondly, inorganic salt is added into the filter liquid obtained in the first step, filtering is conducted to obtain a filter cake, then, water is added into the filter cake, and pulping is conducted to obtain pulped liquid; thirdly, the membrane treatment technology is adopted to conduct desalination and concentration on the pulped liquid obtained in the second step, and a concentrated solution is obtained; fourthly, cosolvent, buffer salt and bactericide are added into the concentrated solution obtained in the third step, and the liquid dye for the active ink is obtained.Viscosity modifier and tension modifier can be added into the liquid dye so that the active ink can be prepared, and the prepared active ink for inkjet printing is good in stability and printing effect.

Description

technical field [0001] The invention belongs to the field of inkjet printing, and in particular relates to a method for preparing a liquid dye used in active ink, and the liquid dye is suitable for preparing active ink for digital printing. Background technique [0002] Digital inkjet printing technology is a product of modern technology applications that integrates computer data processing, precision machinery, and photoelectric information technology, gradually formed with the continuous development of computer technology. Digital inkjet printing is currently developing rapidly because it meets the requirements of environmental protection, low carbon and sustainable development; the dyes used for ink printing in the early stage basically relied on foreign imports. With the increasing promotion of digital inkjet printing technology, the dyes used for ink printing are formulated as digital ink dyes The key factor for success is that everyone agrees that the theme of ink dyes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/26C09D11/328
CPCC09B67/0073C09D11/328
Inventor 王国林张薇
Owner 浙江劲光纺织科技有限公司
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