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Pigment dispersant and pigment composition, pigment dispersion and printing ink using the same

A pigment dispersant and pigment composition technology, applied in the field of pigment dispersants, can solve the problems of no effect, no effect, no sufficient effect, etc., and achieve the effect of good color tone and excellent fluidity

Inactive Publication Date: 2007-03-14
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these compounds are effective when used with binders having acidic functional groups such as acrylic resins and alkyd resins, sufficient effects cannot be exhibited when naphthol pigments and azo condensation pigments are included in the pigments.
In addition, when using an adhesive with a basic functional group such as polyurethane resin or polyamide resin, the effect is basically not shown.
In particular, when using a highly basic polyurethane resin containing urea bonds used in gravure printing inks, etc., no effect is exhibited at all

Method used

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  • Pigment dispersant and pigment composition, pigment dispersion and printing ink using the same
  • Pigment dispersant and pigment composition, pigment dispersion and printing ink using the same
  • Pigment dispersant and pigment composition, pigment dispersion and printing ink using the same

Examples

Experimental program
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Effect test

manufacture example 1

[0059] Add 15 parts of Pigment Red 166 to 300 parts of 99% sulfuric acid, and react at 25°C for 3 hours. This reaction solution was poured into 3000 parts of ice water, stirred, filtered, and washed with 2% hydrochloric acid aqueous solution. After the resulting filter cake was slurried with 700 parts of water, the pH was adjusted to 9 with sodium hydroxide. Next, it was heated to 60° C., 58 parts of 10% aluminum sulfate aqueous solution was added, stirred at 60° C. for 1 hour, filtered, washed with water, and dried to obtain 18 parts of pigment dispersant (a). The average number of substituents of the sulfonic acid group was 1.8.

manufacture example 2

[0061] Change pigment red 166 to pigment red 214, at the same time, change the reaction temperature from 25 ℃ to 30 ℃, and change 58 parts of 10% aluminum sulfate aqueous solution into 29 parts of 10% calcium chloride aqueous solution, in addition, it is the same as the production example 1 in the same manner to obtain 17 parts of pigment dispersant (b). The average number of substituents of the sulfonic acid group is 1.5.

manufacture example 3

[0063] Change pigment red 166 to pigment red 144, simultaneously, change reaction temperature from 25 ℃ to 20 ℃, and change 58 parts of 10% aqueous solution of aluminum sulfate into 33 parts of 10% aqueous solution of ferrous sulfate, in addition, it is the same as the production example 1 in the same manner to obtain 18 parts of pigment dispersant (c). The average number of substituents of the sulfonic acid group was 1.2.

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Abstract

The present invention provides one kind of pigment dispersant. The pigment dispersant is used in printing ink and paint, and can reach excellent flowability, high dispersion stability, capacity of forming bright coating, etc. The pigment dispersant has the structure as shown.

Description

technical field [0001] The present invention relates to a pigment dispersant, and more specifically, the present invention relates to a pigment composition, a pigment dispersion and a printing ink containing the pigment dispersant. Background technique [0002] Dispersing pigments in a fine state in printing inks, paints, etc., can make printed matter or painted products have vivid color tone and gloss and other adaptability. In addition, by dispersing pigments in a stable state, the fluidity of printing inks and coatings can be improved, printing adaptability can be improved, and labor and energy in the manufacture of printing inks and coatings can be greatly reduced. Furthermore, if the dispersion state is stable, generally the storage stability is excellent. [0003] In fact, pigments used in printing inks and paints often have extremely small particle sizes in order to achieve more vivid color tones. However, if the particles are too small, the cohesive force between t...

Claims

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Application Information

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IPC IPC(8): C09D7/00C09D17/00C09D11/02C09D11/03
Inventor 上久保敬佐井哲也
Owner TOYO INK SC HOLD CO LTD
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