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Sheet-like adhesive, gas barrier laminated body, and sealed body

A technology of adhesive layer and gas barrier layer, which is applied in the direction of adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the problems of easy reduction of luminous brightness, luminous efficiency and luminous uniformity, and luminous characteristics. Achieve excellent interlayer adhesion and high inhibitory effect

Active Publication Date: 2022-06-28
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, organic EL elements have the problem that light-emitting characteristics such as light-emitting luminance, light-emitting efficiency, and light-emitting uniformity tend to decrease over time.

Method used

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  • Sheet-like adhesive, gas barrier laminated body, and sealed body
  • Sheet-like adhesive, gas barrier laminated body, and sealed body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4、 comparative example 1～2

[0270] (1) Preparation of adhesive composition

[0271] Each component shown below was added according to the compounding quantity (active ingredient ratio) shown in Table 1, and it diluted with methyl ethyl ketone, and prepared the adhesive composition of 18 mass % of active ingredient concentration, respectively.

[0272] The details of each component used are as follows.

[0273] - Modified polyolefin-based resin (A): manufactured by Mitsui Chemicals Co., Ltd., product name "UNISTOLE H-200", acid-modified α-olefin polymer, solid at 25°C, weight average molecular weight (Mw)=47,000.

[0274] · Thermosetting component (B):

[0275] Polyfunctional epoxy compound (1): manufactured by Mitsubishi Chemical Corporation, product name "YX8034", hydrogenated bisphenol A diglycidyl ether, epoxy equivalent = 270 g / eq, weight average molecular weight (Mw) = 3,200.

[0276] Polyfunctional epoxy compound (2): manufactured by Mitsubishi Chemical Corporation, product name "YX8000", hydroge...

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Abstract

The sheet-like adhesive of the present invention is formed of an adhesive composition containing a modified polyolefin resin (A) and a thermosetting component (B), and satisfies the following conditions (I) and (II). ・Condition (I): When the sheet-shaped adhesive is left to stand for 20 minutes in an environment of 120°C, the 3 The amount of evolved gas produced is 20mg / cm 3 the following. ·Condition (II): Under the conditions of temperature 60°C, pressure 0.2MPa and speed 0.2m / min, use a roller to paste the sheet-like adhesive on a polyethylene terephthalate film with a thickness of 50μm. The laminated body of the adhesive is pressed against a glass plate, the surface of the laminated body on the side of the sheet-shaped adhesive is bonded to the glass plate, and the sheet-shaped adhesive is made to After curing, it was stored at 23° C. and a relative humidity of 50% for 24 hours, and then, under the conditions of a peeling speed of 300 mm / min and a peeling angle of 180°, the adhesion of the laminate to the glass plate was measured according to JIS Z0237:2000. Adhesive force, the adhesive force is 10N / 25mm or more.

Description

technical field [0001] The present invention relates to a sheet-like adhesive, a gas-barrier laminate having the sheet-like adhesive as an adhesive layer, and a sealing body obtained by sealing a sealed object such as an electronic device with the gas-barrier laminate. Background technique [0002] In recent years, an organic EL element has attracted attention as a light-emitting element capable of emitting high-intensity light by low-voltage DC driving. [0003] However, the organic EL element has a problem that light emission characteristics such as light emission luminance, light emission efficiency, and light emission uniformity tend to decrease with the passage of time. [0004] As a cause of the problem of this reduction in light emission characteristics, it is considered that oxygen, moisture, etc. penetrate into the organic EL element to degrade electrodes and organic layers. Therefore, the organic EL element is sealed with a sealing material to prevent the intrusion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/35B32B27/00B32B27/32C09J7/10C09J11/06C09J123/26C09J163/00
CPCB32B27/00B32B27/32C09J7/10C09J7/35C09J11/06C09J123/26C09J163/00C09J2301/312C09J2203/326
Inventor 长谷川树西岛健太
Owner LINTEC CORP
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