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Optical filter

Inactive Publication Date: 2010-05-06
ADEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]When the mixture of the dye compound and the layered clay mineral is used in an optical filter as such without being once isolated as a clay mineral complex and dried, the resulting optical filter contains an organic solvent-insoluble component, such as a quaternary ammonium salt, which can reduce moist heat resistance of the filter

Problems solved by technology

This results in thickening a coating composition, flocculation

Method used

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Examples

Experimental program
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Effect test

preparation example 1

Synthesis of Clay Mineral Complex 1

[0080]A dispersion (20 g) of 1.0 g of Lucentite SAN210-A (lipophilic smectite, from CO—OP Chemical Co., Ltd.) as a layered clay mineral (B) in 19 g of methyl ethyl ketone and a solution (6 g) of 0.3 g of a bistrifluoromethylsulfonylimide salt of compound No. 1 as a dye cation (C) in 5.7 g of methyl ethyl ketone were mixed and stirred for 1 hour to exchange part of the interlayer organic cation (D) of Lucentite SAN210-A with compound No. 1 (dye cation (C)). To the reaction system was added 150 ml of methanol. The solid thus precipitated was collected by filtration and washed successively with water and methanol to give 0.75 g of clay mineral complex 1.

preparation example 2

Synthesis of Clay Mineral Complex 2

[0081]Clay mineral complex 2 weighing 0.64 g was obtained in the same manner as in Preparation Example 1, except for using a solution (6 g) having 0.5 g of compound No. 1 bistrifluoromethylsulfonylimide salt dissolved in 5.5 g of methyl ethyl ketone.

preparation example 3

Synthesis of Clay Mineral Complex 3

[0082]A dispersion (20 g) of 1.0 g of Lucentite SAN210-A (lipophilic smectite, from CO—OP Chemical Co., Ltd.) as a layered clay mineral (B) in 19 g of methyl ethyl ketone and a solution (6 g) of 0.3 g of a bistrifluoromethylsulfonylimide salt of compound No. 50 (dye cation (C)) in 5.7 g of methyl ethyl ketone were mixed and stirred for 1 hour. To the reaction system was added 150 ml of methanol. The solid thus precipitated was collected by filtration and washed successively with water and methanol to give 0.77 g of clay mineral complex 3.

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Abstract

An optical filter containing at least a clay mineral complex (A). The clay mineral complex (A) comprises a layered clay mineral (B) intercalated with a dye cation (C), and an organic cation (D).

Description

TECHNICAL FIELD[0001]This invention relates to an optical filter containing an inorganic / organic complex having a layered clay mineral intercalated with dye cations and organic cations and optionally containing a binder resin. The optical filter is specially suited for application to image displays.BACKGROUND ART[0002]Compounds having an intense absorption of specific wavelengths of light are used in a recording layer of optical recording media, such as CD-Rs, DVD-Rs, DVD+Rs, and blue laser recording discs, and an optical element of image displays, such as liquid crystal displays (LCDs), plasma display panels (PDPs), electroluminescence displays (ELDs), cathode ray tubes (CRTs), vacuum fluorescent displays (VFDs), and field emission displays (FEDs).[0003]The optical element of an image display is exemplified by a light absorber used in a color filter having a substrate and color pixels formed on the substrate and transmitting white light to convert a monochromatic display to a color...

Claims

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Application Information

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IPC IPC(8): G02F1/361
CPCC09B23/0008C09B23/0025C09B23/0033C09B23/0041C09B23/0058C09B23/0066C09B23/04C09B23/06C09B23/083C09B23/086C09B53/02C09B63/00C09B69/06G02B1/00G02B5/22C09B23/00C09B53/00
Inventor ISHIDA, TATSUYASHIGENO, KOICHI
Owner ADEKA CORP