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Pigment dispersion and coloring composition using phthalimide and derivatives thereof

A phthalimide, pigment dispersion technology, applied in azo dyes, organic dyes, chemical instruments and methods, etc., can solve the problems of easy agglutination, uniform dispersion of pigments, difficult to color photosensitive compositions, etc., Achieving the effect of suppressing the decrease in contrast

Active Publication Date: 2018-05-25
SANYO COLOR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the smaller the particle size of the pigment, the easier it is to aggregate, and the more difficult it is to disperse uniformly in the colored photosensitive composition.

Method used

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  • Pigment dispersion and coloring composition using phthalimide and derivatives thereof
  • Pigment dispersion and coloring composition using phthalimide and derivatives thereof
  • Pigment dispersion and coloring composition using phthalimide and derivatives thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0138] Reagents and the like used in Examples, Comparative Examples, and Controls described below are as follows.

[0139] (1) Pigment

[0140] ·C.I. Pigment Green 59

[0141] Product name "FASTOGEN GREEN C100" (it is called "C100" in a table|surface.), DIC Corporation make. It is a chlorinated zinc bromide phthalocyanine pigment, and the average number of hydrogen atoms contained in one molecule is 2 or more.

[0142] · C.I. Pigment Blue 15:6

[0143] Product name CYANINE BLUE A540, manufactured by DIC Corporation. For copper phthalocyanine pigments.

[0144] (2) Phthalimide and its derivatives

[0145] ・Phthalimide: manufactured by Tokyo Chemical Industry Co., Ltd.

[0146] ・Phthalimide acetic acid: manufactured by Tokyo Kasei Kogyo Co., Ltd.

[0147] ・N-butylphthalimide: manufactured by Tokyo Chemical Industry Co., Ltd.

[0148] ・Phthalimide acetone: manufactured by Tokyo Chemical Industry Co., Ltd.

[0149] 3-phthalimide propionic acid: manufactured by Accel Pharm...

manufacture example 1

[0163] (Production example 1) Production of phthalimide derivative (3-tetrachlorophthalimide propionic acid)

[0164] Place a 100ml eggplant-shaped flask in an oil bath, add propylene glycol monomethyl ether (hereinafter referred to as "PM") 75g, tetrachlorophthalic anhydride 20.02g (70mmol), β-alanine 6.24g (70mmol), A cooling tube was installed on the upper part, and the temperature of the oil bath was raised while stirring with a magnetic stirrer. The target substance started to precipitate when the temperature reached 130° C., so the stirring was continued for 5 minutes. Thereafter, it was cooled to room temperature, 25 g of PM was added, and stirring was continued for 30 minutes. The content was filtered with a suction filter, and the residue was washed with pure water, followed by drying at 100° C. for 18 hours. The yield was 18.7 g (yield 74%). This dried product was used in Examples described later as 3-tetrachlorophthalimide propionic acid which is a phthalimide de...

manufacture example 2

[0166] (Production example 2) Production of phthalimide derivative (2-tetrachlorophthalimide ethanephosphoric acid)

[0167] Place a 500m1 four-necked flask in an oil bath, add PM 200g, tetrachlorophthalic anhydride 41.95g (150mmol), O-phosphoethanolamine 20.70g (150mmol), 1,4-diazabicyclo[2,2 ,2]-octane 33.65g (300mmol), a cooling tube was installed on the upper part, and heated and reflowed for 6 hours while stirring with a magnetic stirrer. After leaving to cool to room temperature, the content was filtered with a suction filter, and the residue was washed with PM. After redispersing the residue in 1.5 L of methanol for 30 minutes, 300 g of 35% hydrochloric acid was added and stirred for 30 minutes. The content was filtered with a suction filter, and the residue was washed with a small amount of methanol and then dried. The yield was 42 g (69% yield). This dried product was used in Examples described later as 2-tetrachlorophthalimideethanephosphoric acid which is a phtha...

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Abstract

An object of the present invention is to provide a pigment dispersion capable of suppressing an increase in the viscosity after preparation of the pigment dispersion irrespective of the type of phthalocyanine pigment, and suppressing a decrease in the contrast of a coating film after preparing a coloring composition containing the same, and a coloring composition containing the same. The pigment dispersion containing at least one selected from the group consisting of phthalimide and a derivative thereof represented by the following formula (1), a phthalocyanine pigment, a dispersant, and a solvent. (In the formula (1), R1 to R4 are hydrogen atoms or halogen atoms, Q is (i) a hydrogen atom, and (ii) an alkyl group having 1 to 4 carbon atoms of the substituent X bonded to a terminal carbon atom or (iii) an aryl group which may have a substituent Y bonded to a carbon atom of an aromatic ring; the substituent X is an acetyl group or a carboxyl group a phosphate group or a sulfo group; thesubstituent Y is a methyl group, an acetyl group, a carboxyl group, a phosphoric acid group or a sulfo group.)

Description

technical field [0001] The present invention relates to a pigment dispersion and a coloring composition using phthalimide and its derivatives, and particularly to a pigment dispersion used for a color filter element provided in a flat panel of a display device and a coloring composition containing the same. combination. Background technique [0002] A color filter element is widely used as a structural member of a liquid crystal display (LCD) or the like. LCDs are widely used in display devices such as monitors, televisions, notebook PCs, tablet PCs, and smartphones. These display devices require high image quality. On the other hand, in recent years, from the viewpoint of global environmental protection and the like, there has been an increasing demand for reduction of power consumption. Therefore, higher luminance, higher contrast, and the like are required for the color filter elements constituting the display device. [0003] For color filter elements, a colored phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/46G03F7/00G03F7/027
CPCG03F7/0007G03F7/027C09B67/007C09B47/085C09D7/41
Inventor 松原康洋
Owner SANYO COLOR WORKS
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