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Liquid dye for active ink and preparation method and application thereof

A technology of liquid dyes and reactive inks, applied in applications, organic dyes, inks, etc., can solve problems such as poor stability, and achieve high stability, good printing effect, color fixation rate and high purity

Active Publication Date: 2016-06-22
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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  • Liquid dye for active ink and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Preparation of synthetic puree of active orange 13

[0032] (1) Disperse N-methyl J acid in water, stir for 15 minutes, adjust pH to 7.1-7.3 with industrial liquid alkali, and obtain clear liquid after dissolving. Add maleic anhydride dropwise to the clear solution, 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, cool down to 20-25°C, and obtain an acylated solution for later use. In this step , the molar ratio of N-methyl J acid and 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 in the diazo reaction pot and put into sulfonated toubic acid for beating for 1 hour, add hydrochloric acid and stir for 15 minutes, slowly add sodium nitrite solution, control temperature≤5℃, after the test end point is reached, obtain diazonium salt for later use , the molar ratio of sulfonated tuyere acid, hydrochloric acid and sodium nitr...

Embodiment 2

[0037] The preparation of embodiment 2 active ink

[0038](1) the active orange 13# synthetic puree obtained in Example 1 was adjusted to pH 7.5-8.0 with hydrochloric acid, then left standstill for 24 hours at room temperature, and then filtered to obtain a filtrate;

[0039] (2) the filtrate obtained in step (1) is warmed to 50 ° C, then sodium chloride is added 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 pressure 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 consumption of the filter cake and water is 1 g: 7.5 mL, and the pulp amount is added in the beating liquid to reduce the total amount of activated carbon to 3%. The dosage is adsorbed, and the pH value is maintained at 7.5-8.5 for 12 to 24 hours. If there is no obvious change, the filter press is used for press...

Embodiment 3

[0045] In this example, step (1) after adjusting the pH to 6.0-7.0, it was left to stand still, and other operations were 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 for active ink, which is suitable for preparing active ink for digital printing. Background technique [0002] Digital inkjet printing technology is a product of modern scientific and technological applications that has gradually formed with the continuous development of computer technology, integrating computer data processing, precision machinery, and optoelectronic information technology. Digital inkjet printing is developing rapidly because it meets the requirements of environmental protection, low carbon and sustainable development. In the early stage, the dyes used in ink printing basically depended on foreign imports. With the increasing promotion of digital inkjet printing technology, the dyes used in ink printing are formulated as digital ink dyes. The key factor for success is that everyone agrees that the ink dye is salt-fr...

Claims

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Application Information

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Patent Type & Authority Applications(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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