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Optical adhesive composition and optical adhesive film

A technology of adhesives and compositions, applied in the direction of film/sheet adhesives, non-polymer adhesive additives, adhesives, etc., can solve problems such as difficult formation of cured or cross-linked structures, and achieve excellent adhesion and long-term reliability, excellent long-term durability and optical characteristics, excellent moisture permeability resistance and chemical resistance

Active Publication Date: 2018-04-24
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, adhesives containing rubber-based resins as base resins have the following problems: it is difficult to achieve chemical crosslinking through the curing process, physical crosslinking needs to be utilized, and finally it is difficult to form a cured or crosslinked structure for ensuring sufficient durability
Moreover, there are limitations in the application of the final product due to this

Method used

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  • Optical adhesive composition and optical adhesive film
  • Optical adhesive composition and optical adhesive film

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0075] Production Example 1: Production of isobutylene-isoprene rubber having a carboxyl group in the main chain

[0076] An isobutylene-isoprene rubber, which is a copolymer formed from a monomer mixture containing 1.7 mol % of isoprene and 98.3 mol % of isobutylene, was prepared. In a 2L reactor with nitrogen reflux and a cooling device installed so that the temperature can be easily adjusted, 3 parts by weight of peroxide (mCPBA) was added to 100 parts by weight of the above-mentioned isobutylene-isoprene rubber. Stir for 6 hours. Next, 3.1 parts by weight of a 1N aqueous hydrochloric acid solution was added to 100 parts by weight of the rubber, stirred at 30° C. for 1 hour, then heated to 90° C. and stirred for 1 hour. Thus, an isobutylene-isoprene rubber (IIR-OH) having a carboxyl group grafted to the isoprene unit of the main chain was produced.

manufacture example 2

[0077] Production Example 2: Production of isobutylene-isoprene rubber having a carboxyl group in the main chain

[0078] An isobutylene-isoprene rubber, which is a copolymer formed from a monomer mixture containing 1.7 mol % of isoprene and 98.3 mol % of isobutylene, was prepared. In a 2L reactor with nitrogen reflux and a cooling device installed so that the temperature can be easily adjusted, 3 parts by weight of maleic anhydride and 1.75 parts by weight of After adding dibenzoyl peroxide (dibenzoylperoxide), it was stirred at 60° C. to 80° C. for 5 hours. Next, 3.1 parts by weight of a 1N aqueous hydrochloric acid solution was added to 100 parts by weight of the rubber, stirred at 30° C. for 1 hour, then heated to 90° C. and stirred for 1 hour. Thus, an isobutylene-isoprene rubber (IIR-COOH) having a carboxyl group grafted to the isoprene unit of the main chain was produced.

manufacture example 3

[0079] Production Example 3: Production of isobutylene-isoprene rubber having a hydroxyl group in the main chain

[0080] Production Example 3 used isobutylene-isoprene rubber which is a copolymer formed of a monomer mixture containing 0.5 mol % of isoprene and 99.5 mol % of isobutylene, except Otherwise, an isobutylene-isoprene rubber (IIR-OH) having a hydroxyl group grafted to an isoprene unit in the main chain was produced by the same method as in Production Example 1.

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Abstract

The present invention relates to an optical adhesive composition, applicable to an optical device or a display device, which exhibits high barrier performance with respect to moisture and oxygen on the basis of low vapor permeability while embodying excellent adhesive performance and optical properties. More specifically, the present invention provides an optical adhesive composition comprising: an isobutylene-isoprene rubber having a polar functional group; and organic-inorganic particles comprising organic particles and inorganic particles. Further, the present invention provides an opticaladhesive film comprising an adhesive layer comprising a cured product of the optical adhesive composition.

Description

technical field [0001] This specification claims priority from Korean Patent Application No. 10-2015-0155175 filed with the Korean Patent Office on November 5, 2015, the entire contents of which are incorporated in the present invention. [0002] The present invention relates to an optical adhesive composition and an optical adhesive film capable of sulfur-free or halogen-free curing , and achieve excellent chemical resistance, moisture permeability resistance, optical characteristics, and durability. Background technique [0003] Touch materials including packaged electronic components or transparent conductive films, etc. require excellent touch sensitivity in order to work well. Also, recently, there has been widespread interest in the development of adhesive compositions in order to improve the durability and optical characteristics of devices such as OLEDs or touch screen panels. [0004] Typically, adhesives used for OLED or touch screen panels, etc. need to ensure o...

Claims

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Application Information

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IPC IPC(8): C09J123/22C09J11/02C09J11/04C09J11/06C09J7/30C09J7/20
CPCC09J11/02C09J11/04C09J11/06C09J123/22C09J7/20C09J7/383C09J2203/318
Inventor 徐光洙朴恩敬李承远金章淳崔源九崔兑伊
Owner LG CHEM LTD
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