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Processed pigment and use thereof

A pigment and mixing technology, used in pigment slurry, dyeing physical treatment, inorganic pigment treatment, etc., can solve the problems of limited transparency and contrast ratio effect, uniform particle size, etc.

Inactive Publication Date: 2008-03-12
SAKATA INX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This method can make organic pigments finer than primary particles, but it is difficult to make the particle size uniform, and the effect of improving transparency and contrast ratio is limited

Method used

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  • Processed pigment and use thereof
  • Processed pigment and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] In the tank of three-arm planetary mixer TX-15 (trade name, manufactured by Inoue Manufacturing Co., Ltd.), adding 750 parts by mass of pigment red 254, 7500 parts by mass of sodium chloride and 1800 parts by mass of diethylene glycol with a particle diameter of 20 μm, Salt grinding was carried out by kneading at 45° C. for 3 hours within 70% of the rated current value of 9.3 A. Then, 1300 parts by mass of the obtained kneaded product was added to 3 liters of warm water, and stirred for 1 hour while heating at 70° C. to form a slurry, which was repeatedly filtered and washed with water to remove sodium chloride and diethylene glycol. °C for one day and night to obtain 95 parts by mass of the pigment of Example 1.

Embodiment 2

[0072] Add 750 parts by mass of pigment blue 15:6, 7500 parts by mass of sodium chloride and 1800 parts by mass of diethylene glycol with a particle size of 20 μm in the tank of the three-arm planetary mixer TX-15. % range and kneading at 45°C for 8 hours for salt grinding. Then, 1300 parts by mass of the obtained kneaded product was added to 3 liters of warm water, and stirred for 1 hour while heating at 70° C. to form a slurry, which was repeatedly filtered and washed with water to remove sodium chloride and diethylene glycol. °C for a whole day and night to obtain 95 parts by mass of the pigment of Example 2.

Embodiment 3 and 4、 and comparative example 3～6

[0078]

[0079] With the composition shown in Table 1, the pigment-dispersed compositions of Examples 3 and 4 and Comparative Examples 3 to 6 were prepared using a bead mill at a temperature of 60° C. for a whole day and night. In addition, only "PR254" and "PB15:6" are written in Table 1 to represent untreated pigments without salt grinding.

[0080] In addition, the unit of the numerical value which shows a composition is "mass part".

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Abstract

A processed pigment that by virtue of further miniaturization and uniform dispersion of primary particles of pigment, is usable in fields where in the use of an organic pigment as the pigment, high transparency and high contrast ratio are demanded. There is provided a processed pigment characterized by being produced through trituration of a pigment with an inorganic salt by the use of a kneader having three agitation blades each of which makes not only autorotation but also orbital revolution.

Description

technical field [0001] The present invention relates to treated pigments and their use. In more detail, the present invention relates to a resist composition in which a pigment is dispersed for liquid crystal color filters, an inkjet ink, a liquid developer, and the like, in which transparency is particularly required, not only for various printing inks and paints. and contrast ratio (contrastratio) of the coloring composition for the purpose of the treated pigment. And, as a use of the treated pigment, it relates to a pigment-dispersed resist composition for a color filter having high transparency and a high contrast ratio. Background technique [0002] Recently, organic pigments have begun to be used as colorants not only in various printing inks and paints but also in fields requiring high transparency and high contrast ratios such as color filters and inkjet inks. [0003] In recent years, higher transparency and a higher contrast ratio have been demanded, and in order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/04B01F7/30C09B67/46C09C3/04C09C3/06C09D17/00G02B5/20
CPCC09C1/56C09B67/0002B01F7/30C09B67/0022C09D11/322C01P2004/61C09D17/00C09C3/06C01P2004/51B01F27/95
Inventor 伊藤和典林明
Owner SAKATA INX
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