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Adhesive agent

A technology of adhesives and polymers, applied in the direction of adhesive types, adhesives, grafted polymer adhesives, etc., can solve the problems of light leakage, uneven color, etc., and achieve excellent haze, excellent light leakage resistance, and adhesion Excellent adhesion effect

Active Publication Date: 2015-04-01
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, color unevenness and light leakage occur in the liquid crystal display device such that the peripheral part of the liquid crystal display device is brighter or darker than the center.

Method used

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  • Adhesive agent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~13

[0248] [Examples 1-13, Comparative Examples 1-6]

[0249] The ingredients prepared and prepared as described above were mixed in the proportions shown in Table 2 below to prepare an adhesive composition to be an adhesive forming material for optical parts, which was diluted with ethyl acetate (viscosity [500~10000mPa·s(25°C)]), make adhesive composition solution.

[0250] Next, the adhesive composition solution obtained above was coated on a polyester release sheet so that the thickness after drying was 25 μm, and after drying at 90° C. for 3 minutes, the formed adhesive composition layer was transferred to Printed on a polyethylene terephthalate (PET) film (thickness 38μm), using an electrodeless lamp [H bulb of LH6UV lamp] manufactured by Fusion Corporation, with a peak illuminance: 600mW / cm 2 , cumulative exposure: 240mJ / cm 2 UV irradiation (120mJ / cm 2 , 2 pulses), aged at 23°C and 65% R.H. for 10 days to obtain a PET film with an adhesive layer.

[0251] Using the PET ...

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PUM

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Abstract

Disclosed is an adhesive agent produced by curing an adhesive agent composition [I] with an active energy ray and / or heat, wherein the adhesive agent composition [I] comprises an acrylic resin (A), an aromatic compound (B) having one ethylenically unsaturated group, and an ethylenically unsaturated compound (C) having at least two ethylenically unsaturated groups, and wherein the adhesive agent is characterized in that the content of the component (B) is 3 to 300 parts by weight relative to 100 parts by weight of the component (A) and the ratio (mol%) of the content of the component (B) to the total content of the components (B) and (C) is more than 50 mol%. The adhesive agent enables the production of a liquid crystal display device in which an adhesive layer produced by curing the adhesive agent with an active energy ray and / or heat can have excellent handling properties (tack) and optical properties (haze), an optical laminate (particularly an optical member such as a polarizing plate) can be adhered to a glass substrate satisfactorily under high-temperature high-humidity environments, no foaming or detachment occurs between the adhesive agent layer and the glass substrate, and unevenness in color or leakage of light does not occur.

Description

technical field [0001] The present invention relates to an adhesive (pressure-sensitive adhesive), an adhesive for optical parts, an optical part with an adhesive layer obtained using the same, an image display device, an active energy ray curable and / or thermal Curable adhesive composition. Specifically, it relates to optical films (polarizing films, retardation films, optical compensation films, brightness enhancement films, etc.) suitable for image display devices such as liquid crystal display devices, organic EL display devices, and PDP (plasma display panels), and more specifically Specifically, it relates to an optical component adhesive for bonding an optical laminate formed by coating a polarizing film with a protective film such as a triacetate cellulose film and a glass substrate of a liquid crystal cell, and an adhesive for optical components formed with the same An optical component with an adhesive layer, especially a polarizing plate with an adhesive layer. B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/00C09J7/02C09J11/06G02B5/30
CPCC09J151/04G02B5/30C08K5/0025C09J4/00C09J7/22C09J7/35C09J7/38C09J133/00C09J2203/318C09J2301/30G02B5/3025G02B5/305
Inventor 铃木秀昭高木圣子三谷直也堀家浩史
Owner MITSUBISHI CHEM CORP