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Process for the production of pigment composition, colored composition for color filter obtained by said process, and color filter

A technology of pigments and mixtures, applied in the direction of instruments, optical filters, organic dyes, etc., can solve the problems of display brightness ratio (low contrast)

Inactive Publication Date: 2006-12-20
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem at this time is that the brightness ratio (contrast) of the display between the ON state and the OFF state is low

Method used

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  • Process for the production of pigment composition, colored composition for color filter obtained by said process, and color filter
  • Process for the production of pigment composition, colored composition for color filter obtained by said process, and color filter
  • Process for the production of pigment composition, colored composition for color filter obtained by said process, and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0254] Using a conversion mixer (provided by Asada Iron Works.Co., LTD), 100 parts of Blue 15 (T-95 crude blue, provided by ZHUHAI TOYO INK CO., LTD) as organic pigments, and 600 parts of sodium chloride as water-soluble The natural inorganic salt, 100 parts of diethylene glycol as the water-soluble organic liquid and 5 parts of rosin resin (Ester gum AT, provided by Arakawa Chemical Industries, Ltd.) as the resin were premixed almost uniformly for 5 minutes. Pass the resulting mixture through a screw-type metering feeder ( figure 1 The metering feeder part 4) in the is supplied to the continuous kneader 10 ("Miracle K.C.K.-type 42", provided by Asada Iron Works. Co., LTD). The continuous kneader 10 has a feeding part screw with a diameter of 120 mm(R) and eight sets of kneading parts composed of a fixed disk and a rotating disk. The continuous kneader 10 was operated at a kneaded composition extrusion amount of 21 kg / hour at a spindle rotation number of 50 rpm and a kneading tem...

Embodiment 2 to 4

[0268] Except that synthetic rosin (Dymerex resin, provided by Rika Hercules), disproportionated rosin (Rondis R, provided by Arakawa Chemical Industries, Ltd.) and hydrogenated rosin (Staybelite resin, provided by Rika Hercules) were used instead of resins, the same as the examples 1 The pigment composition is obtained in the same manner. Table 1 shows the electric power consumption required for kneading and the ΔL of the coated product * value.

[0269] ΔL of each coating * All are larger than the values ​​of Comparative Examples 1 to 4, and each coated product has good transparency.

Embodiment 5 to 7 and comparative Embodiment 5 to 7

[0271] The kneaded materials having the components shown in Table 1 were respectively kneaded under the kneading conditions shown in Table 1. These materials were separately processed in the same manner as in Example 1 to obtain a pigment composition. The organic pigment used in Example 5 and Comparative Example 5 was CIPigment Yellow 138 (Paliotol Yellow K0691HD, provided by BASF), and the organic pigment used in Example 6 and Comparative Example 6 was CIPigment Red 177 (Chromophthal Red A2B , Provided by Ciba Specialty Chemicals Co.), the organic pigment used in Example 7 and Comparative Example 7 is CIPigment Violet 23 (Sumiton Fast Violet RL Base, provided by Sumitomo Chemical Co., Ltd).

[0272] In Examples 5 to 7, the ΔL of the coating product prepared from the pigment composition obtained with a small amount of electric power consumption * The value is larger than that in Comparative Examples 5 to 7, and the transparency in Examples 5 to 7 is very good.

[0273] ...

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Abstract

PROBLEM TO BE SOLVED: To solve the problems that the conventional batch type kneader and the like raises, problems of the restricted production scale, consumption of much electric energy, insufficient transparency of the obtained pigment and the like.SOLUTION: The manufacturing method of the pigment composition comprises kneading a mixture that consists of an organic pigment, a water-soluble inorganic salt, a water-soluble organic liquid and a resin in a continuous kneading machine that has pulverizing spaces formed in the gap parts between the annular fixed disks and the rotating disks that are concentric with the fixed disks that rotate as one body around the axial center of the driving shaft.

Description

Technical field [0001] The present invention relates to a method for preparing a pigment composition having very excellent dispersibility in a vehicle, wherein the particle size of the particles used for color development is fine and the particle diameter is uniform, and to a method using the above pigment composition The coloring composition used for a color filter and the color filter using the said coloring composition. In particular, the present invention relates to a method for preparing a pigment composition. When the powder particles used for color development are dispersed in the vehicle of ink, such as gravure ink or offset ink or paint, the pigment composition provides Coated products with good gloss and high color strength. The present invention also relates to a coloring composition for color filters, which is used to prepare color filters used in color liquid crystal displays and color imaging tube elements, and the present invention also relates to a filter formed us...

Claims

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Application Information

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IPC IPC(8): C09B67/36C09B67/16C09B67/00G02B1/00G02B5/20
Inventor 森高见濑川信之小谷卓也中村博之上野太郎小仓真由美
Owner TOYO INK SC HOLD CO LTD
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