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Adhesive composition, adhesive and adhesive sheet

A composition, adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, film/sheet adhesives, etc., can solve problems such as change, ITO corrosion resistance value, etc., to achieve durability excellent effect

Active Publication Date: 2017-11-24
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

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

[0119] 1. Preparation of (meth)acrylate polymer

[0120] Copolymerize 76.9 parts by mass of n-butyl acrylate, 10 parts by mass of methyl acrylate, 10 parts by mass of isobornyl acrylate, 3 parts by mass of 2-hydroxyethyl acrylate and 0.1 part by mass of acrylic acid to prepare (meth)acrylic acid Ester polymer (A). When the molecular weight of this (meth)acrylate polymer (A) was measured by the method mentioned later, it was 1.8 million weight average molecular weight.

[0121] 2. Preparation of adhesive composition

[0122]100 parts by mass (solid content conversion value; the same below) of the (meth)acrylate polymer (A) obtained in the above step (1), 0.1 parts by mass of trimethylol as the isocyanate crosslinking agent (B) Propane-modified tolylene diisocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name "CORONATE L"), 0.3 parts by mass of 3-mercaptopropyltrimethoxysilane as a silane coupling agent (C) having a mercapto group, and A cocondensate o...

Embodiment 2～12

[0137] [Examples 2-12, Comparative Examples 1-4]

[0138] In addition to 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 crosslinking agent (B) And the compounding quantity of a silane coupling agent (C) was changed as shown in Table 1, and it carried out similarly to Example 1, and manufactured the polarizing plate with an adhesive bond layer. In addition, in Example 9, when preparing the adhesive composition, an equimolar mixture of 1.8 parts by mass of bis(trifluoromethanesulfonimide) lithium and tetraethylene glycol dimethyl ether was blended as an antistatic agent. product (manufactured by Sanko Chemical Co., Ltd., trade name "SANKONOL TGR").

[0139] Here, the above-mentioned weight average molecular weight (Mw) is a weight average molecular weight in terms of polystyrene measured (GPC measurement) under the following condit...

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Abstract

The present invention provides an adhesive composition, an adhesive, and an adhesive sheet that are excellent in durability without adversely affecting an adherend such as a transparent conductive film. 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 contains a monomer having a hydroxyl group, a monomer having an alicyclic structure, and a monomer having a carboxyl group as monomer units constituting the polymer. Body; (meth)acrylate polymer (A), as a monomer unit constituting the polymer, contains 1% by mass to 5% by mass of a monomer having a hydroxyl group, and contains 0.1% by mass to 0.8% by mass of a unit having a carboxyl group body.

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive (a material for crosslinking the adhesive composition), and an adhesive sheet, and particularly relates to an adhesive combination suitable for optical members such as polarizers materials, adhesives and bonding sheets. Background technique [0002] In recent years, in various electronic devices, a touch panel that also functions as a display device and an input device is frequently used. The types of touch panels mainly include resistive, capacitive, optical and ultrasonic. Resistive touch panels include analog resistive and matrix resistive, and capacitive touch panels include surface and projection types. [0003] The touch panels of mobile electronic devices such as smartphones and tablet terminals that have recently attracted attention often use projected capacitive touch panels. As the projected capacitive touch panel of the mobile electronic device, for example, some studie...

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