Pigment dispersing agent and pigment composition containing the same dispersing agent

A pigment dispersant, pigment composition technology, applied in the field of pigment composition, or unsubstituted alkylene, pigment dispersant, can solve the problem of reduced tinting strength, reduced gloss of ink or coating coating, viscosity Elevation and other problems to achieve the effect of preventing flocculation, excellent gloss and clarity

Inactive Publication Date: 2001-08-29
DAINICHISEIKA COLOR & CHEM MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the viscosity of the pigment-dispersed carrier, reduce the coloring power of the ink or paint using the pigment-dispersed carrier, reduce the gloss of the coating of the ink or paint, etc.

Method used

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  • Pigment dispersing agent and pigment composition containing the same dispersing agent

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0032] 1-Aminoanthraquinone (72 parts) and cyanuric chloride (30 parts) were added to nitrobenzene (1000 parts), followed by stirring at 170° C. for 5 hours. After cooling the reaction mixture, taurine (41 parts) and potassium carbonate (23 parts) were further added, and the resulting mixture was stirred at 180°C for 8 hours. The reaction mixture was cooled, then filtered. The solid matter was washed with ethanol, then with water, and thereafter dried, whereby the following dispersant (A) (94 parts) was obtained:

Synthetic example 2

[0034] 1-Aminoanthraquinone (72 parts) and cyanuric chloride (30 parts) were added to nitrobenzene (1000 parts), followed by stirring at 170° C. for 5 hours. After the reaction mixture was cooled, sulfanilic acid (56 parts) and potassium carbonate (23 parts) were further added, and the resulting mixture was stirred at 180° C. for 12 hours. The reaction mixture was cooled, then filtered. The solid matter was washed with ethanol, then with water, and thereafter dried, whereby the following dispersant (B) (101 parts) was obtained:

Synthetic example 3

[0036] 1-Aminoanthraquinone (73 parts) and cyanuric chloride (30 parts) were added to o-dichlorobenzene (1100 parts), followed by stirring at 170° C. for 5 hours. After cooling the reaction mixture, o-toluidine (35 parts) was further added, and the resulting mixture was stirred at 180°C for 5 hours. The reaction mixture was cooled, then filtered. The solid matter was washed with ethanol, then with water, and thereafter dried, whereby 2,4-bis(1-anthraquinonylamino)-6-tolylamino-1,3,5-triazine (94 parts) was obtained. To this compound (94 parts) was then added 5% oleum (800 parts) at 10°C or lower, followed by reaction at 30°C for 5 hours. The reaction mixture was cooled and then precipitated into ice water (2500 parts). The filtrate was collected by filtration, and then washed with water, whereby the following dispersant (C) (102 parts) was obtained. As a result of elemental analysis of sulfur, it was confirmed that an average of 0.9 sulfonic acid groups were introduced per ...

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PUM

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Abstract

Pigment dispersants comprise compounds represented by the following formula (I) or (II) or metal, ammonium or amine salts thereof wherein X1 is a hydrogen or halogen atom or an alkyl or acylamino group, Y1 is an anthraquinonylamino, phenylamino, naphthylamino or phenoxy group, each of R1 and R3 is a hydrogen atom or a substituted or unsubstituted alkyl or phenyl group, R2 is a substituted or unsubstituted alkylene, phenylene or naphthylene group, X2 is a hydrogen or halogen atom or a substituted or unsubstituted alkyl group, R4 is a substituted or unsubstituted phenyl or naphthyl group, and n means an average number of sulfonic acid groups introduced in said compound and stands for a number of from 0.5 to 2. Pigment compositions, such as colorants for gravure inks, paints or color filters, comprise pigments and the pigment dispersants.

Description

Background of the invention [0001] a) Field of invention [0002] The present invention relates to a pigment dispersant and a pigment composition using the same. [0003] b) Detailed description of related technologies [0004] When mixing and dispersing pigments into a vehicle such as paint, gravure ink, or offset printing ink, difficulties are often encountered in stably dispersing the pigment into the vehicle. Pigment fines that were once dispersed in the carrier will flocculate in the carrier. This increases the viscosity of the pigment-dispersed vehicle, lowers the coloring power of ink or paint using the pigment-dispersed vehicle, lowers the glossiness of the coating layer of the ink or paint, and the like. Summary of the invention [0005] Therefore, the object of the present invention is to provide a kind of pigment dispersant, in the production of printing ink (offset printing ink, gravure ink etc.), various coatings, plastics, pigment type textile printing and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/46C09B67/22C09K23/32
CPCC09B67/0038C09B67/0033C09B67/0084
Inventor 大木茂曾我孝行青木和孝高见尚德冈本久男西胜宏明山宫士郎
Owner DAINICHISEIKA COLOR & CHEM MFG CO LTD
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