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Adhesive composition, adhesive layer for transparent conductive layer, laminate, and image display device

A technology of transparent conductive layer and adhesive layer, which is applied in the direction of non-polymer adhesive additives, adhesive types, adhesive additives, etc., to achieve the effects of inhibiting corrosion, inhibiting the increase of surface resistance, and inhibiting the increase of surface resistance value Effect

Active Publication Date: 2018-10-26
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the adhesive layer containing such an acid component is in direct contact with the transparent conductive layer, the transparent conductive layer is corroded by the acid, so it is difficult to use it for this purpose.

Method used

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  • Adhesive composition, adhesive layer for transparent conductive layer, laminate, and image display device
  • Adhesive composition, adhesive layer for transparent conductive layer, laminate, and image display device
  • Adhesive composition, adhesive layer for transparent conductive layer, laminate, and image display device

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0154] Production example 1 (production of base film (1))

[0155] A laminated body having a polyvinyl alcohol (PVA) layer with a thickness of 9 μm formed on an amorphous polyethylene terephthalate (PET) substrate is subjected to auxiliary stretching in the air at a stretching temperature of 130°C, thereby producing Stretch the laminate. Next, the stretched laminate is dyed to produce a colored laminate. Furthermore, the colored laminate was stretched together with the amorphous PET substrate in a boric acid aqueous solution at a temperature of 65° C. to a total draw ratio of 5.94 times, thereby producing an optical film laminate including a 4 μm thick PVA layer. Through such two-stage stretching, the PVA molecules of the PVA layer formed on the amorphous PET substrate are in a high-order orientation, and the iodine adsorbed by dyeing is in a high-order orientation in a single direction in the form of polyiodide ion complexes. order orientation, it can be used as a high-perf...

manufacture example 2

[0156] Production example 2 (production of base film (2))

[0157] A PVA film with a thickness of 80 μm was stretched to 3 times while being dyed in a 0.3% iodine solution at 30° C. for 1 minute between rolls with different speed ratios. Thereafter, stretching was performed while dipping in an aqueous solution containing 4% boric acid and 10% potassium iodide at 60° C. for 0.5 minutes so that the total stretching ratio became 6 times. Next, after washing by immersing for 10 seconds in an aqueous solution containing 1.5% potassium iodide at 30° C., it was dried at 50° C. for 4 minutes to obtain a polarizing plate with a thickness of 20 μm. In addition, while applying a PVA-based adhesive to one surface of the polarizer, a 40-μm-thick acrylic resin film (transparent protective film (1)) after saponification treatment was pasted, and then the other surface of the polarizer was coated with a PVA-based adhesive. A norbornene-based film (transparent protective film (2)) having a th...

manufacture example 3

[0158] Production Example 3 (Preparation of a solution containing an acrylate copolymer (A-1))

[0159] In a reaction vessel equipped with a condenser tube, a nitrogen introduction tube, a thermometer and a stirring device, add 95 parts of butyl acrylate, 1 part of 4-hydroxybutyl acrylate, 4 parts of acrylic acid and relative to the monomer (solid content) together with ethyl acetate. ) 100 parts of 2,2'- azobisisobutyronitrile (AIBN) as an initiator was reacted at 60° C. for 7 hours under a nitrogen stream. Then, ethyl acetate was added to this reaction liquid, and the solution (30 weight% of solid content density|concentration) containing the acrylate copolymer (A-1) of 2 million weight average molecular weights was obtained.

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Abstract

The purpose of the present invention is to provide an acrylic pressure-sensitive adhesive composition which contains an acrylic polymer and at least one cross-linking agent selected from the group consisting of an organic peroxide-based cross-linking agent and an isocyanate cross-linking agent, and which can efficiently create cross-linking. This acrylic pressure-sensitive adhesive composition is characterized by containing a (meth)acrylic polymer and at least one cross-linking agent selected from the group consisting of an organic peroxide-based cross-linking agent and an isocyanate cross-linking agent, in addition to a compound represented by general formula (1) (in the formula, R1 and R2 are independently a hydrogen atom, or a 1-18 carbon atom hydrocarbon residue optionally containing an oxygen atom), and the content of the compound represented in general formula (1) is 0.005-5 parts by weight per 100 parts by weight of the (meth)acrylic polymer.

Description

technical field [0001] The present invention relates to an adhesive composition for forming an adhesive layer in contact with the above-mentioned transparent conductive layer of a transparent conductive substrate having a transparent conductive layer, and an adhesive for a transparent conductive layer formed of the above-mentioned adhesive composition. mixture layer. Furthermore, the present invention relates to an image display device including a laminate sequentially comprising a base film, the above-mentioned adhesive layer for a transparent conductive layer, and a transparent conductive layer, and using the laminate as a touch panel. Background technique [0002] In recent years, input devices that combine liquid crystal display devices and image display devices used in mobile phones, portable music players, and the like with touch panels have become popular. In a touch panel, a base material (such as a transparent conductive film) on which a transparent conductive laye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/06B32B27/00B32B27/30C09J7/20C09J11/06G02B5/30G02F1/1335
Inventor 秋月伸介外山雄祐保井淳高桥俊贵永田瑞穗
Owner NITTO DENKO CORP
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