Adhesive composition, its manufacturing method and use

Abstract

To provide a pressure-sensitive adhesive composition for an optical member having excellent durability, removability and stress relaxation properties and hardly increasing the adhesive strength after preservation without causing a residual paste.

Description

Adhesive composition and its production method and its use technical field The present invention relates to a pressure-sensitive adhesive composition suitable for lamination or re-peeling of optical components and a method for producing the pressure-sensitive adhesive. Furthermore, the present invention relates to an optical member having an adhesive layer with the adhesive composition described above, and image display devices such as liquid crystal display devices, organic EL display devices, and PDPs using the same. Background technique Optical components used in liquid crystal display devices, such as polarizers or phase difference plates, are attached to liquid crystal cells using adhesives. The optical material used for such an optical component has a large expansion and contraction under heating or humidification, and thus peeling or peeling accompanying it is likely to occur after attachment. For this reason, the adhesive for optical components is required to have...

AI Technical Summary

Problems solved by technology

Edge processing is the process of stamping optical parts with adhesives, etc., which prolongs the time until shipment, which greatly reduces the production capacity.

In addition, when an isocyanate compound is used as a cross-linking agent, it is easy to be colored due to long-term storage, heating, or high-temperature treatment, and especially when there is a cross-linking by a peroxide, the coloring may become prominent