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Photo-curable resin composition exhibiting light-blocking properties and tackiness, and cured product thereof

A technology of photocurable resins and compositions, applied in optics, optical components, instruments, etc., can solve the problem of low light transmittance of cured resins, and achieve excellent properties, high usage rate, and excellent adhesion. Effect

Active Publication Date: 2011-10-26
KYORITSU KAGAKU SANGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to achieve the above-mentioned requirements, a photocurable resin composition has been reported that is efficiently cured by light by utilizing the difference in refractive index between the cured product of the photocurable resin of the base resin and the compound added thereto, Therefore, even a thick resin can be cured, and the light transmittance of the obtained cured resin is low (Patent Document 1)

Method used

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  • Photo-curable resin composition exhibiting light-blocking properties and tackiness, and cured product thereof
  • Photo-curable resin composition exhibiting light-blocking properties and tackiness, and cured product thereof
  • Photo-curable resin composition exhibiting light-blocking properties and tackiness, and cured product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1

[0077] First, since the influence of the addition amount of a component (D) on the deep curability of a photocurable resin composition was examined, Examples 1-6 were performed.

[0078] (Preparation of Photocurable Resin Composition)

[0079] As the component (A), 84 parts of polycarbonate-based urethane acrylate (product name: UN-5500, weight average molecular weight: about 50,000) manufactured by Negami Kogyo Co., Ltd., methacrylic acid manufactured by Kyoeisha Chemical Co., Ltd. 14 parts of 2-hydroxyethyl ester (product name: HO), 2 parts of lauryl acrylate (product name: LA) of Kyoeisha Chemical Co., Ltd., polyol-type xylene resin manufactured by Fudow Co., Ltd. as component (B) (Modified product) 84 parts of (K140), 14 parts of alumina filler (product name: AO-902H, average particle diameter: 0.7 μm, refractive index 1.76) manufactured by Admatechs Co., Ltd. as (C) component, as (D ) 0.14 to 7.0 parts of black pigment (product name: NBD-0744) manufactured by Nikhiro Bic...

Embodiment 7

[0092] Next, Example 7 was carried out in order to examine the relationship between the film thickness of the cured photocurable resin composition and light-shielding properties.

[0093] (Preparation of Photocurable Resin Composition)

[0094] As the component (A), 84 parts of polycarbonate-based urethane acrylate (product name: UN-5500, weight average molecular weight: about 50,000) manufactured by Negami Kogyo Co., Ltd., methacrylic acid manufactured by Kyoeisha Chemical Co., Ltd. 14 parts of 2-hydroxyethyl ester (product name: HO), 2.0 parts of lauryl acrylate (product name: LA) of Kyoeisha Chemical Co., Ltd., polyol-type xylene resin manufactured by Fudow Co., Ltd. as component (B) (Modified product) 84 parts of (K140), 21 parts of alumina filler (product name: AO-902H, average particle diameter: 0.7 μm, refractive index 1.76) manufactured by Admatechs Co., Ltd. as (C) component, as (D ) 0.42 parts of black pigment (product name: NBD-0744) manufactured by Nishong Bics Co...

Embodiment 8

[0109] Next, Example 8 was carried out to examine the influence of addition of the component (D) on the light-shielding properties of the cured photocurable resin composition.

[0110] (Preparation of Photocurable Resin Composition)

[0111] As the component (A), 84 parts of polycarbonate-based urethane acrylate (product name: UN-5500, weight average molecular weight: about 50,000) manufactured by Negami Kogyo Co., Ltd., methacrylic acid manufactured by Kyoeisha Chemical Co., Ltd. 10 parts of 2-hydroxyethyl ester (product name: HO), 2.0 parts of lauryl acrylate (product name: LA) of Kyoeisha Chemical Co., Ltd., polyol-type xylene produced by Fudow Co., Ltd. as component (B) 84 parts of resin (modified product) (K140), 14 parts of alumina filler manufactured by Admatechs Co., Ltd. (product name: AO-902H, average particle diameter: 0.7 μm, refractive index 1.76) as (C) component, as ( D) 0.28 parts of black pigment (product name: NBD-0744) manufactured by Nikhong Bics Co., Ltd....

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Abstract

The present invention provides a photo-curable resin composition which exerts such effective photo-curability that even a thick film can be cured, and which exhibits a low light transmittance and tackiness after curing. The photo-curable resin composition comprises (A) a photo-curable resin; (B) a tackifier; (C) a compound which has a refractive index that differs from the refractive index of a cured product of the components (A) and (B) by 0.01 or above, and which is incompatible with the components (A) and (B) and dispersible therein; and (D) a black pigment.

Description

technical field [0001] The present invention relates to a light-shielding and adhesive photocurable resin composition after curing. The photocurable resin composition of the present invention can be suitably used as an optical device, especially as a sealing agent for a liquid crystal display, for fixing optical material components such as a liquid crystal panel, preventing light leakage from a backlight, and preventing external light from entering. Background technique [0002] In recent years, with the high performance of electro-optical devices such as liquid crystal displays, optical lenses, optical pickups, and sensors, in order to achieve and maintain high sensitivity, the transmitted light from the outside or the inside through the member or the fixed resin layer It is indispensable to reduce the loss caused by light leakage and light leakage from the gap. figure 1 A schematic diagram of a conventional liquid crystal display is shown. In particular, for parts that r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K3/04C08K3/22C08L33/00C08L35/00C08L63/00
CPCC08L31/04C08L33/24C08L35/06C08L75/16C08L2666/02C08K3/04C08K3/22C08K2003/2227C08K2003/2241C08L33/04C08L63/00C08L101/00G02B1/04
Inventor 壶内干彦黑野敏椎根翼
Owner KYORITSU KAGAKU SANGYO KK
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