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A kind of reactive dye ink for digital printing with high color fixation rate and preparation method thereof

A technology of reactive dyes and digital printing, applied in dyeing, textile and papermaking, etc., can solve the problems affecting the popularization and development of digital printing industry, and achieve the effects of excellent moisture retention, deep color, and improved color fixing rate.

Active Publication Date: 2021-10-12
浙江海印数码科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above has become the main obstacle affecting the popularization and development of my country's digital printing industry

Method used

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  • A kind of reactive dye ink for digital printing with high color fixation rate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] S1, the preparation of the modified styrene-acrylonitrile polymer as the polymer color-fixing and dispersing agent:

[0028] (1) Add styrene-acrylonitrile block polymer with molecular weight Mn=70000, styrene block content 25% and 1,4-dichloromethoxybutane to dichloromethane at a mass ratio of 1:2 In, reflux reaction for 6 hours, after the reaction, the reaction mixture was cooled and evaporated to dryness, washed and dried to obtain the chloromethylated product;

[0029] (2) Add the obtained chloromethylation product and 4-fold excess triethylamine into tetrahydrofuran, heat to 50°C, and react for 10 hours. After the reaction is completed, add a certain amount of distilled water, separate, wash, and dry to obtain Quaternized products;

[0030] (3) Add the quaternized product into 1M KOH solution, heat to 50°C, stir for 10 hours, then filter and wash until the filtrate is neutral, and obtain a polymer color-fixing dispersant after drying.

[0031] S2, a reactive dye i...

Embodiment 2

[0034] S1, the preparation of the modified styrene-acrylonitrile polymer as the polymer color-fixing and dispersing agent:

[0035](1) Add styrene-acrylonitrile block polymer with molecular weight Mn=72000, styrene block content 32% and 1,4-dichloromethoxybutane to dichloromethane at a mass ratio of 1:2 , reflux reaction for 10 hours, after the reaction, the reaction mixture was cooled and evaporated to dryness, washed and dried to obtain chloromethylated product;

[0036] (2) Add the obtained chloromethylated product and 4-fold excess triethylamine into tetrahydrofuran, heat to 80° C., and react for 5 hours. After the reaction is completed, add a certain amount of distilled water, separate, wash, and dry to obtain Quaternized products;

[0037] (3) Add the quaternized product to 1M KOH solution, heat to 30-50°C, stir for 5-10 hours, then filter and wash until the filtrate is neutral, and obtain a polymer color-fixing dispersant after drying.

[0038] S2, a kind of reactive ...

Embodiment 3

[0041] S1, the preparation of the modified styrene-acrylonitrile polymer as the polymer color-fixing and dispersing agent:

[0042] (1) Add styrene-acrylonitrile block polymer with molecular weight Mn=70000, styrene block content of 28% and 1,4-dichloromethoxybutane to dichloromethane at a mass ratio of 1:2 , reflux reaction for 10 hours, after the reaction, the reaction mixture was cooled and evaporated to dryness, washed and dried to obtain chloromethylated product;

[0043] (2) Add the obtained chloromethylation product and 4-fold excess triethylamine into tetrahydrofuran, heat to 50°C, and react for 10 hours. After the reaction is completed, add a certain amount of distilled water, separate, wash, and dry to obtain Quaternized products;

[0044] (3) Add the quaternized product into 1M KOH solution, heat to 50°C, stir for 10 hours, then filter and wash until the filtrate is neutral, and obtain a polymer color-fixing dispersant after drying.

[0045] S2, a kind of reactive...

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Abstract

The invention discloses a reactive dye ink for digital printing with high color fixation rate, which is composed of the following components according to mass percentage, including the following raw material components: reactive dye 17-28%, polymer color fixing and dispersing agent 2-10 %, moisturizing agent 1-5%, pH regulator 0.5-1%, bactericide 0.1-1%, co-solvent 2-10%, stabilizer 0.5-1.5%, and the balance is deionized water. By adding the polymer color-fixing and dispersing agent of the present invention, the dye can be aided in solubilization, and then the solubility of the dye can be increased, and the dye content in the ink can be improved. The polymer color-fixing and dispersing agent of the present invention also has a strong Alkaline, can catalyze the covalent cross-linking between reactive dyes and fibers, and can greatly improve the color fixing rate of the ink, especially suitable for cotton and rayon fiber materials.

Description

technical field [0001] The invention belongs to the field of digital inkjet printing, and in particular relates to a reactive dye ink for digital printing with high color fixation rate and a preparation method thereof. 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 technology for textiles began in the 1970s, and completed the transformation from technical models to production applications in the 1990s. As one of the key industries supported by the state, textile digital inkjet printing technology has gradually replaced traditional textile printing technology in the world relying on its obvious green printing technology and unique printing method. [0003] After 2000, textile digital inkjet printing technology ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P1/52D06P1/46D06P1/62D06P5/30
CPCD06P1/38D06P1/46D06P1/525D06P1/625D06P5/30
Inventor 宋水友宋丽娜
Owner 浙江海印数码科技有限公司
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