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Photocurable composition for transparent adhesive sheet

A light-curable, adhesive sheet technology, applied in the direction of non-polymer organic compound adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve insufficient stability, adhesive sheet difficulties, etc. problems, achieve high cohesion, excellent moisture permeability resistance, and corrosion inhibition effects

Active Publication Date: 2013-06-05
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, a composition in which a crosslinking agent is added to a polymer has the following problems: the stability after one-component formation is insufficient, and solvent dilution is required when coating the polymer. very difficult

Method used

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  • Photocurable composition for transparent adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6、 comparative example 1～4

[0085] The compositions shown in Table 1 were mixed separately and mixed using a disperser at room temperature to prepare a uniform composition for a photocurable transparent pressure-sensitive adhesive sheet. The prepared composition for photocurable transparent adhesive sheets was coated on a release PET film (100 mm x 100 mm x 100 μm) with a film thickness of 200 μm using a coating device, and the upper surface was covered with a release PET film with a thickness of 25 μm. , using an ultraviolet irradiation device (manufactured by Nippon Battery Co., Ltd., UV irradiation device 4kw×1, output: 160W / cm, metal halide lamp), at an irradiation distance of 12cm, a lamp moving speed of 20m / min, and an irradiation dose of about 500mJ / cm 2 The composition for a photocurable transparent adhesive sheet was cured by irradiating ultraviolet rays under conditions of , to obtain an adhesive sheet with a film thickness of about 200 μm sandwiched between release PET films.

[0086] (Calcula...

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Abstract

The purpose of the present invention is to provide a one-liquid photocurable composition for a transparent adhesive sheet that will not corrode a conductive layer of a transparent conductive film even when directly bonded to the conductive layer surface, and that has excellent adhesive layer cohesive force, transparency, punch workability, and graded absorption. The present invention relates to a photocurable composition for a transparent adhesive sheet, said composition comprising: a (meth)acrylic group-containing polyolefin compound (A); a (meth)acrylic acid ester having hydroxyl groups (B); a photopolymerizable monomer (C) other than (meth)acrylic acid ester having hydroxyl groups; and a photopolymerization initiator (D), wherein the (meth)acrylic group-containing polyolefin compound (A) is a compound obtained by reacting polyolefin polyol and a polyfunctional isocyanate compound and reacting a predetermined amount of a compound having (meth)acrylic groups, and a carboxyl group-containing monomer is used in a predetermined amount or less with regard to the photopolymerizable monomer (C) other than (meth)acrylic acid ester having hydroxyl groups.

Description

technical field [0001] The present invention relates to a composition for a photocurable transparent adhesive sheet, characterized in that the photocurable transparent adhesive sheet obtained by curing the composition for a photocurable transparent adhesive sheet is used for transparent conduction in lamination of a transparent conductive film. A composition for a transparent adhesive sheet for film fixing, a transparent adhesive sheet for fixing a transparent conductive film obtained by curing a composition for a transparent adhesive sheet for fixing a transparent conductive film, and a transparent adhesive sheet for fixing a transparent conductive film are characterized in that A laminate on the surface of the conductive layer of the transparent conductive film. Background technique [0002] In recent years, touch panels have been mounted on mobile phones, game machines, and the like. A touch panel is made by bonding a transparent substrate with a transparent conductive f...

Claims

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Application Information

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IPC IPC(8): C09J175/16C09J4/02C09J7/02
CPCC08G18/755C09J4/00C08G18/672C08G18/6208C09J175/16C08G18/62C09J7/22C09J2203/00C09J2301/314C09J2301/40
Inventor 中西健一佐佐木一博竹内雄太
Owner SHOWA DENKO KK
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