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Adhesive composition for optical member, adhesive layer for optical member, adhesive optical member, transparent conductive laminate, touch panel, and image display device

A transparent conductive, transparent conductive film technology, applied in the direction of adhesive types, non-polymer adhesive additives, adhesive additives, etc., can solve peeling, insufficient cross-linking reaction of cross-linking agent, adhesive To prevent layer foaming and other problems, to achieve the effect of inhibiting yellowing, satisfying pen mark resistance, and improving pen mark resistance

Active Publication Date: 2010-03-24
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although there is no problem of yellowing when epoxy-based cross-linking agents and peroxides are used, there is another problem that the cross-linking reaction with the cross-linking agent is insufficient due to the relationship with acrylic polymers , the adhesive layer produces blistering and peeling under high temperature and high temperature and high humidity environment

Method used

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  • Adhesive composition for optical member, adhesive layer for optical member, adhesive optical member, transparent conductive laminate, touch panel, and image display device
  • Adhesive composition for optical member, adhesive layer for optical member, adhesive optical member, transparent conductive laminate, touch panel, and image display device
  • Adhesive composition for optical member, adhesive layer for optical member, adhesive optical member, transparent conductive laminate, touch panel, and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180] (Preparation of Acrylic Polymer)

[0181] Add 100 parts by weight of butyl acrylate, 5 parts by weight of acrylic acid and 0.075 parts by weight of 2-hydroxyethyl acrylate, and 2,2 0.2 parts by weight of '-azobisisobutyronitrile, 200 parts by weight of ethyl acetate as a polymerization solvent, and after nitrogen substitution was sufficiently carried out, the liquid temperature in the flask was kept at around 55° C. while stirring under a nitrogen stream, and carried out for 10 Hour polymerization reaction to prepare acrylic polymer solution. The weight average molecular weight of the said acrylic polymer was 2.2 million.

[0182] (Preparation of Adhesive Composition)

[0183] 0.2 parts by weight of dibenzoyl peroxide (Naipa-BMT, manufactured by NOF Corporation) as a peroxide, 0.2 parts by weight of dibenzoyl peroxide as an epoxy-based crosslinking agent, and 100 parts by weight of the solid content of the above-mentioned acrylic polymer solution were added. 0.05 par...

Embodiment 2

[0193] In Example 1, except not adding an isocyanate crosslinking agent when preparing the adhesive composition, it carried out similarly to Example 1, and produced the transparent conductive film with an adhesive layer.

Embodiment 3

[0217] (production of polarizing plate)

[0218] A polyvinyl alcohol film having a thickness of 80 μm was stretched 5 times in an iodine aqueous solution at 40° C., and then dried at 50° C. for 4 minutes to obtain a polarizing plate. Triacetylcellulose films having a thickness of 80 μm were bonded to both sides of the polarizer using a polyvinyl alcohol-based resin adhesive to obtain a polarizer.

[0219] (Preparation of anchor layer)

[0220] An aqueous solution having a solid content concentration of 0.8% was prepared using a polyurethane resin and a water-soluble polythiophene conductive polymer as a forming material (binder) of the anchor layer. The ratio of the polyurethane resin and the water-soluble polythiophene conductive polymer was set to be the former: the latter = 10:1. This aqueous solution was applied to one side of the polarizing plate so that the thickness after drying was 10 nm, and dried at 80° C. for 2 minutes to form an anchor layer.

[0221] (Productio...

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Abstract

Disclosed is an adhesive composition for optical members, which contains a (meth)acrylic polymer containing 0.2-20 parts by weight of a carboxyl group-containing monomer as a monomer unit, namely as acopolymerization component, per 100 parts by weight of an alkyl (meth)acrylate having an alkyl group with 4-14 carbon atoms. The adhesive composition for optical members also contains, as crosslinking agents, 0.02-2 parts by weight of a peroxide and 0.005-5 parts by weight of an epoxy crosslinking agent per 100 parts by weight of the (meth)acrylic polymer. The adhesive composition for optical members can be suppressed in yellowing at high temperatures and in high-temperature high-humidity environments. Consequently, the adhesive composition enables formation of an adhesive layer which is suppressed in foaming, separation and the like at high temperatures and in high-temperature high-humidity environments.

Description

technical field [0001] The present invention relates to an adhesive composition for optical members and an adhesive layer for optical members formed from the adhesive composition. The present invention also relates to a pressure-sensitive adhesive optical component in which the above-mentioned pressure-sensitive adhesive layer for optical components is formed on at least one surface of the optical component. Examples of adhesive optical components include transparent conductive films with an adhesive layer, which can be used in liquid crystal displays, electroluminescent displays, etc., after appropriate processing. Transparent electrodes in new display methods or touch panels, etc. In addition, transparent conductive films with adhesive layers are used for antistatic or electromagnetic wave blocking of transparent articles, liquid crystal switchable glass, and transparent heaters. Moreover, as an adhesive type optical member, the optical film with an adhesive layer is menti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/04B32B7/02C09J163/00B32B27/00G02B5/30B32B27/30G09F9/00C09J11/06H01B5/14C09J7/29
CPCC09J7/0296C08G18/6258C09J133/066C08G18/8029C09J175/04C08G18/809C09J7/0217C09J2433/00C09J7/385C09J7/29C09J133/06B32B27/00G09F9/00H01B5/14
Inventor 下川佳世细川敏嗣
Owner NITTO DENKO CORP
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