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A kind of yellow azo pigment composition and its preparation method and application

A technology of pigment composition and azo pigments, applied in the direction of pigment paste, organic dyes, etc., can solve the problems of pigment color influence, etc., and achieve the effects of batch stability guarantee, high degree of unitization, and broad application prospects.

Active Publication Date: 2020-06-30
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The derivatized structural modification of pigments can change the surface polarity of pigments, but direct modification on pigment residues will have a greater impact on the color of pigments, so it is urgently needed to reduce the impact on color and improve surface activity. Pigments that improve the dispersibility and dispersion stability of pigments

Method used

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  • A kind of yellow azo pigment composition and its preparation method and application
  • A kind of yellow azo pigment composition and its preparation method and application
  • A kind of yellow azo pigment composition and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (-M of the engineered coupling component in the b component 1 -(M 2 )-R 1 p 1 R 2 q 1 )preparation:

[0054] 1) In a 1000ml there-necked flask with stirring, add 400g of ice water, add 36.90g (0.2mol) of cyanuric chloride, then slowly add 17.32g (0.1mol) of 4-aminobenzenesulfonic acid, dropwise add 20% of Aqueous sodium hydroxide solution to keep the pH value of the system at 3-5; when the pH value no longer changes, add polyetheramine (p2=35-45, q2=6-10, and molecular weight 2000) 100g (0.1mol), Heat to 60°C, add dropwise 20% aqueous sodium hydroxide solution to keep the pH value of the system at 3-5, and react for 1 hour; add 10.31 g (0.1mol) of diethylenetriamine, heat at 60°C for 1 hour and add dropwise 20% The pH value of the system is kept at 5-7; keep stirring for standby;

[0055] 2) In a 500 ml three-necked flask with stirring, add 200 g of chlorosulfonic acid and 20.72 g (0.1 mol) of o-methoxyacetoacetanilide, heat at 60° C. for 2 h, during which 20 g o...

Embodiment 2

[0058] Composition preparation:

[0059] 1) Preparation of diazonium salt: o-methoxy-p-nitroaniline (red base B) was slurried in 1.5 equivalent of 15% hydrochloric acid for 8 hours, then 1.5 equivalent of concentrated hydrochloric acid was added, and 1.02 equivalent of 1.02 equivalent was added dropwise at 0-5°C 30% aqueous sodium nitrite solution, followed by reaction with starch potassium iodide test paper to obtain diazonium salt solution;

[0060] 2) Coupling solution preparation: 99 parts of mol parts of o-methoxyacetoacetanilide and 1 part of mol parts of above-mentioned embodiment 1 are prepared to obtain and transform the coupling component to be dissolved in 1.2 equivalent sodium hydroxide solution, be mixed with 10 % concentration solution for use.

[0061] 3) In the acetic acid / sodium acetate buffer solution, synchronously add equimolar amounts of the solutions of step 1) and step 2) dropwise to ensure that the pH of the system is 4.4-4.6, and detect with H acid so...

Embodiment 3

[0069] Example 3 Synthesis of Pigment Yellow 73 Modified Pigment Composition

[0070] The operation method is the same as in Example 1, except that the o-methoxy-p-nitroaniline (red base B) of step 1 is changed to o-nitro-p-chloroaniline, and then the composition is prepared according to the process recorded in the examples. A pigment composition containing the a-component and the b-component is obtained, wherein the a-component and the b-component have the following structures.

[0071]

[0072]

[0073] Comparative Example 2 Synthesis of Pigment Yellow 73

[0074] The composition was prepared according to the preparation process of the composition described in Example 2, except that the component b was not added to the coupling solution in step 2, and the mol fraction of o-methoxyacetoacetanilide was 100 parts.

[0075]

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Abstract

The invention relates to pigment modification, and specifically relates to a yellow azo pigment composition and a preparation method and applications thereof. The yellow azo pigment composition is prepared by mixing 100 moles of a component A and 0.5 to 15 moles of a component B; wherein the component A is a yellow mono azo organic pigment, and the component B is derivatives of the yellow mono azoorganic pigment. The prepared azo pigment composition has better grinding dispersibility and dispersion stability.

Description

technical field [0001] The invention relates to the modification of pigments, in particular to a yellow azo pigment composition and its preparation method and application. Background technique [0002] Many applications require the modification of the pigment surface to obtain different surface properties to improve its dispersibility, dispersion stability and compatibility. Preparation of pigment composition from pigment derivatives is an important means of pigment surface modification. [0003] JP2004051813A proposes a pigment surface sulfonation modification technology. The pigment modified by this method has the general formula P-(SO3- X+)n, wherein P represents the pigment, and X represents metal ions, hydrogen, and one, two, and three of 1-18 carbons. grade amines. This method is widely applicable to Pigment Blue 15, Pigment Red 122, etc. The pigments treated by this method can maintain excellent storage stability, and have the characteristics of low foaming, low vis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/36C09B67/22C09D17/00
Inventor 王小林王鹏李学敏唐勇宋志承王晓英白雪松罗鸿椾智双郝凤来
Owner SHENYANG RES INST OF CHEM IND
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