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Application of quaternary ammonium salt derivative in preparation of red pigment, red pigment and preparation method of red pigment

A technology of derivatives and quaternary ammonium salts, which is applied in the field of pigment production for water-based UV inks, can solve problems such as poor storage stability, ink crystallization, poor dispersion, etc., to prevent re-aggregation, improve wettability, and significantly The effect of applying the foreground

Pending Publication Date: 2022-02-25
LONGKOU UNION CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this kind of red pigment is applied to water-based UV ink, the dispersibility is not good, the viscosity is high, and the storage stability is poor
In the prior art, there was a method of directly adding quaternary ammonium salt derivatives to the ink, but the quaternary ammonium salt derivatives are physically mixed with the pigment in the ink, which will cause adverse phenomena such as crystallization and agglomeration of the ink. Therefore, it is necessary to prepare In addition, surfactants, dispersants and polymer additives are added to the ink to improve the performance of the ink and increase the production cost of the ink

Method used

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  • Application of quaternary ammonium salt derivative in preparation of red pigment, red pigment and preparation method of red pigment
  • Application of quaternary ammonium salt derivative in preparation of red pigment, red pigment and preparation method of red pigment
  • Application of quaternary ammonium salt derivative in preparation of red pigment, red pigment and preparation method of red pigment

Examples

Experimental program
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Effect test

preparation example Construction

[0035] The following preparation examples and experimental examples can illustrate the present invention in more detail, but do not limit the present invention in any form.

[0036] Unless otherwise specified, the content of each component used in the following is the weight percentage content.

[0037] The following are the raw materials used in each example:

[0038]Hydrochloric acid solution: the mass percentage of HCl is 30%;

[0039] Caustic soda solution: the mass percentage of NaOH is 20%;

[0040] Sodium nitrite solution: NaNO 2 The mass percentage content is 35%;

[0041] Acetic acid solution: the mass percentage of HAc is 80%;

[0042] The mass percentage of 3-amino-4-methoxybenzanilide (KD-bass) is 100%;

[0043] 3-hydroxy-N-(4 chloro-2.5-dimethoxyphenyl)-2-naphthylcarboxamide (AS-LC) mass percentage content is 98%;

[0044] The mass percentage content of 3-hydroxy-N-(2-methyl 5-dichlorophenyl)-2-naphthylcarboxamide (AS-KB) is 98%;

[0045] The mass percentag...

example 1

[0052] The addition of quaternary ammonium salt derivatives is 24% (3g) of the weight of the AS component, and the addition of the compound solution of the surfactant is 0.8% (0.1g) of the weight of the AS component.

[0053] S1. Diazotization reaction

[0054] Add 110ml of water into the diazotization reaction container, stir 13.2g of 3-amino-4-methoxybenzanilide (KD-bass), mix and stir for 0.5 hours, add 19.4g of hydrochloric acid solution and stir to dissolve, Add ice and cool down to below -5°C, add 11.9 g of sodium nitrite solution, stir for 1 hour, use sulfamic acid to destroy excess sodium nitrite, until the KI starch test paper is slightly blue at the end point, and obtain diazonium salt solution I;

[0055] S2. Coupling solution

[0056] S2.1 Add 120ml of water to the coupling component dissolution container, add 27g of sodium hydroxide solution, raise the temperature to 85°C, and then add N-(4chloro-2.5-dimethoxyphenyl)-3-hydroxyl-2- Naphthalene carboxamide (AS-LC)...

example 2

[0067] The difference from Example 1 is that step S2.1 of this example does not add quaternary ammonium salt derivatives.

[0068] Specifically, S2.1 Add 120ml of water to the coupling component dissolution container, add 27g of sodium hydroxide solution, raise the temperature to 85°C, and then add N-(4chloro-2.5-dimethoxyphenyl)-3-hydroxy -2-naphthylcarboxamide (AS-LC) 8.2g, 3-hydroxy-N-(2-methyl 5-dichlorophenyl)--2-naphthylcarboxamide (AS-KB) 4.1g, stirred and dissolved Transparent, add ice and cool down to 45°C to obtain coupling component solution II. The rest of the steps are the same.

[0069] Result: Compared with Example 1, the hue is bluer, the tinting strength is 90%, and the viscosity is high.

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Abstract

In order to solve the problems that pigments are poor in wettability and dispersity, high in viscosity and poor in storage stability, a quaternary ammonium salt derivative is applied to preparation of an azo red pigment for water-based UV ink. The invention also relates to the red pigment and a preparation method thereof and further provides the water-based UV red ink using the red pigment. The preparation method of the red pigment comprises the processes of diazotization reaction, coupling liquid preparation, coupling reaction, post-treatment and the like, wherein a quaternary ammonium salt derivative solution is added in the preparation process of coupling liquid, and compound liquid of an anionic surfactant and a nonionic surfactant is added in a post-treatment process. Thus, the pigment has good wettability, high dispersibility, high coloring strength, low viscosity and good storage stability in a water-based UV system.

Description

technical field [0001] The invention relates to the field of pigment production for water-based UV inks, in particular to the application of quaternary ammonium salt derivatives in the preparation of red pigments, the red pigments and the preparation method. Background technique [0002] In recent years, the call for green printing in the printing industry has become increasingly stringent, and the requirements for inks have become more and more stringent, so the advantages of water-based UV inks have become more and more obvious. Therefore, whether it is environmental protection or application effect, there is an upward trend of environmentally friendly water-based UV inks. The United States, Japan, South Korea and other countries are also vigorously promoting the use of environmentally friendly water-based UV inks. Water-based UV pigments will be the best choice for environmentally friendly inks in the future, and the development prospects are very broad. As one of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/00C09B67/18C09D11/037C09D11/101
CPCC09B29/0003C09B67/002C09D11/037C09D11/101
Inventor 季维李秀梅王赫闫永海王建张海窦百超
Owner LONGKOU UNION CHEM
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