Adhesive composition, adhesive and adhesive sheet

A composition and adhesive technology, applied in the direction of adhesive type, ester copolymer adhesive, film/sheet adhesive, etc., can solve the problems of change and corrosion of ITO resistance value, etc., and achieve warping resistance excellent bending effect

Active Publication Date: 2017-12-15
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the binder containing a large amount of carboxyl group as an acid component, there is a problem that ITO is corroded or the resistance value of ITO is changed.

Method used

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  • Adhesive composition, adhesive and adhesive sheet
  • Adhesive composition, adhesive and adhesive sheet
  • Adhesive composition, adhesive and adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] 1. Preparation of (meth)acrylate polymers

[0118] 76.9 parts by mass of n-butyl acrylate, 10 parts by mass of methyl acrylate, 10 parts by mass of 2-phenylethyl acrylate, 3 parts by mass of 2-hydroxyethyl acrylate, and 0.1 part by mass of acrylic acid were copolymerized to prepare ( Meth)acrylate polymer (A). When the molecular weight of this (meth)acrylate polymer (A) was measured by the method mentioned later, the weight average molecular weight was 1,500,000.

[0119] 2. Preparation of the adhesive composition

[0120] 100 parts by mass (solid content conversion value; the same below) of the (meth)acrylate polymer (A) obtained in the above-mentioned step (1), and 0.2 parts by mass of trimethylol as the isocyanate-based crosslinking agent (B) Ethyl propane-modified tolyl diisocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name "CORONATE L"), 0.3 parts by mass of 3-mercaptopropyltrimethoxysilane as a mercapto group-containing silane coupling ...

Embodiment 2～14

[0134] [Examples 2 to 14, Comparative Examples 1 to 6]

[0135] The type and ratio of each monomer constituting the (meth)acrylate polymer (A), the weight average molecular weight of the (meth)acrylate polymer (A), and the compounding amount of the isocyanate-based crosslinking agent (B) , and the type and compounding amount of the silane coupling agent (C) were changed as shown in Table 1, and it carried out similarly to Example 1, and produced the polarizing plate with an adhesive bond layer. In addition, in Example 5, an equimolar mixture of 1.8 parts by mass of bis(trifluoromethanesulfonimide)lithium and tetraethylene glycol dimethyl ether was blended as an antistatic agent at the time of preparing the adhesive composition. product (manufactured by Sanko Chemical Co., Ltd., trade name "SANKONOLTGR").

[0136] Here, the above-mentioned weight average molecular weight (Mw) is the weight average molecular weight in terms of polystyrene measured (GPC measurement) using gel pe...

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Abstract

The present invention provides an adhesive combination that is excellent in durability, light leakage resistance, and warpage resistance of a laminate including an adhesive layer without adversely affecting an adherend such as a transparent conductive film. materials, adhesives and bonding sheets. In order to solve the above problems, an adhesive composition containing a (meth)acrylate polymer (A), an isocyanate crosslinking agent (B) and a mercapto group-containing silane coupling agent (C) is provided, the The (meth)acrylate polymer (A) has a weight average molecular weight of 1.4 million to 2.5 million, and the monomer units constituting the polymer contain a monomer having a hydroxyl group, a monomer having an aromatic ring, and a monomer having a carboxyl group; The (meth)acrylate polymer (A) contains 1% by mass to 5% by mass of a monomer having a hydroxyl group and 5% by mass to 30% by mass of a monomer having an aromatic ring as a monomer unit constituting the polymer , containing 0.1% by mass to 0.8% by mass of a monomer having a carboxyl group.

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive (material for crosslinking an adhesive composition), and an adhesive sheet, and particularly to an adhesive combination suitable for optical members such as polarizers materials, adhesives and adhesive sheets. Background technique [0002] In recent years, in various electronic devices, a touch panel that is used both as a display device and an input device has been widely used. The main types of touch panels are resistive, capacitive, optical and ultrasonic. Resistive touch panels include analog resistive and matrix resistive, and capacitive touch panels include surface and projection. [0003] Projected capacitive touch panels are often used for touch panels of mobile electronic devices such as smartphones and tablet terminals that have recently attracted attention. As the projection type capacitive touch panel of the mobile electronic device, for example, it has been proposed t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J11/06C09J7/02
CPCC09J9/00C09J11/06C09J133/066C09J7/20G02B5/30
Inventor 又野仁荒井隆行所司悟
Owner LINTEC CORP
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