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Fine phthalocyanine pigment particle and process for producing the same, photoresist containing dispersed pigment, colored transfer material, color filter, and liquid-crystal display

A manufacturing method and technology of phthalocyanines, which are applied in the field of color filters and liquid crystal display devices, and the manufacture of phthalocyanine pigment particles, which can solve the problems of inability to use pipelines, high viscosity of pigment dispersions, and lack of supply.

Inactive Publication Date: 2008-12-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the pigment is finer by physical means such as salt milling, the pigment dispersion tends to exhibit a high viscosity
Therefore, when the pigment dispersion is prepared on an industrial scale, many problems arise: for example, it is difficult to take out the pigment dispersion from the disperser, or it cannot be transported by pipeline, and gelation occurs during storage, etc.
[0006] However, a pigment dispersion that satisfies these requirements and is excellent in the dispersibility and fluidity of the above-mentioned pigments, and a pigment-dispersed photoresist containing the pigment dispersion have not been provided so far.

Method used

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  • Fine phthalocyanine pigment particle and process for producing the same, photoresist containing dispersed pigment, colored transfer material, color filter, and liquid-crystal display
  • Fine phthalocyanine pigment particle and process for producing the same, photoresist containing dispersed pigment, colored transfer material, color filter, and liquid-crystal display
  • Fine phthalocyanine pigment particle and process for producing the same, photoresist containing dispersed pigment, colored transfer material, color filter, and liquid-crystal display

Examples

Experimental program
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preparation example Construction

[0135] In the preparation conditions of the organic pigment solution, the preparation conditions of the organic pigment solution are not particularly limited, and the range from normal pressure to subcritical and supercritical conditions can be selected. For organic pigments, from the viewpoint of improving the yield, it is preferred to dissolve under pressure, preferably at 10 5 ~10 8 The dissolution was carried out under the pressure of Pa. When the dissolution is performed under normal pressure, the temperature is preferably -10°C to 150°C, more preferably -5°C to 130°C, particularly preferably 0°C to 100°C.

[0136] When producing the pigment dispersion composition of the present invention, the organic pigment contained in the organic pigment solution used must be uniformly dissolved in a good solvent, but it is also preferable to dissolve it under acidic or alkaline conditions. Generally, alkaline conditions are used when using pigments that have groups that can be diss...

Embodiment 1

[0453] Pigment solution A was prepared by adding 3.3 mL of 28% sodium methoxide methanol solution, 6000 mg of pigment (Pigment Green 36), 6000 mg of polyvinylpyrrolidone, and 600 mg of pigment dispersant A to 100 mL of dimethyl sulfoxide.

[0454] Separately, 1000 mL of water containing 4.3 mL of 1 mol / L hydrochloric acid was prepared as a poor solvent.

[0455] Pigment dispersant A was prepared according to the method disclosed in JP-A-2000-239554.

[0456] Pigment dispersant A

[0457]

[0458] At this time, the temperature was controlled at 1° C., and the GK-0222-10 Ramond star manufactured by Fujisawa Pharmaceutical Co., Ltd. was used in 1000 mL of water, a poor solvent stirred at a rotation speed of 500 rpm. The NP-KX-500 large-capacity non-pulsation pump injected 200mL of pigment solution A at a flow rate of 50mL / min to form nano-pigment particles, thereby preparing pigment dispersion A. The particle diameter and degree of monodispersity of the pigment dispersion li...

Embodiment 2

[0469] A pigment solution B was prepared in the same manner as in Example 1, and a pigment dispersion liquid B was further prepared, except that the pigment dispersant B used in Example 1 was replaced with the following pigment dispersant B. The particle diameter and monodispersity were measured, and the measured number average particle diameter was 34 nm, and Mv / Mn was 1.30. A paste-like concentrated pigment solution B (concentration of nanopigment: 35% by mass) was prepared in the same manner as in Example 1, and a pigment dispersion composition B was further prepared.

[0470] Pigment dispersant B is the following compound prepared according to the preparation method of pigment dispersant c in JP-A-5-72943.

[0471] Pigment dispersant B

[0472]

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Abstract

The invention relates to a process for producing fine phthalocyanine pigment particles which comprises dissolving a phthalocyanine pigment in a good solvent containing a pigment dispersant comprising a compound represented by the general formula (I) to prepare a pigment solution and mixing the solution with a solvent which is compatible with that good solvent and is a poor solvent for the phthalocyanine pigment to precipitate the phthalocyanine pigment as nanometer-size particles. General formula (I) (In the formula, Q represents a residue of an organic dye selected among anthraquinone dyes, etc.; X represents -CO-, etc.; Y1 represents -NH- or -O-; Z represents hydroxy, etc.; R1 and R2 each independently represents alkyl, etc.; m is an integer of 1-6; and n is an integer of 1-4.)

Description

technical field [0001] The present invention relates to phthalocyanine-based pigment particles used in color filters and the like, and a method for producing the same. More specifically, the present invention relates to a method for producing fine particles of phthalocyanine pigments, fine particles of phthalocyanine pigments, a pigment-dispersed photoresist, a coloring transfer material, and products using them having clear hues and high tinting power, Color filters and liquid crystal display devices with high contrast and high light resistance. Background technique [0002] Traditionally, pigments have been widely used in many fields because of their vivid color tone, high tinting strength and light fastness. In general, among these pigments, pigments with fine particles are mostly valuable in practical use, and by preventing pigment aggregation and performing micronizing treatment, vivid hues, high tinting strength, and contrast can be obtained. However, if the pigment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/12C09B67/20C09B67/02G02B5/20
CPCB82Y30/00C09B67/0005C09B67/0032C09B67/0041C09B67/007C09B67/0096G03F7/0007G03F7/105B82Y40/00C09B67/0016
Inventor 吉野晴彦鸭崎彻柴田直也伊藤英明松本圭右
Owner FUJIFILM CORP
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