Adhesives, adhesive sheets, optical films with adhesive layers, and optical laminates

A modified cyclodextrin-based adhesive with a specific gel fraction and crosslinked (meth)acrylic acid ester polymer addresses the durability issues at high temperatures, maintaining adhesion and preventing peeling in displays.

JP7880298B2Active Publication Date: 2026-06-25LINTEC CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
LINTEC CORP
Filing Date
2022-01-27
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Conventional adhesives used in bonding optical components of displays fail to maintain durability at high temperatures, leading to issues such as lifting or peeling.

Method used

An adhesive containing modified cyclodextrin with a degree of modification exceeding 2.5 and a gel fraction of 1.0% or more, combined with a crosslinked (meth)acrylic acid ester polymer, provides high cohesive strength and temperature resistance.

Benefits of technology

The adhesive exhibits excellent durability even at high temperatures, preventing lifting or peeling of bonded members, ensuring long-term adhesion and structural integrity.

✦ Generated by Eureka AI based on patent content.

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Abstract

Provided is an adhesive agent that is to be used in optical applications. The adhesive agent contains a modified cyclodextrin having a degree of modification of more than 2.5 but not more than 3.0. The gel fraction of the adhesive agent is 1.0% or more. Such an adhesive agent has excellent durability even at high temperatures.
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