Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, optical member, and touch panel

An adhesive layer and composition technology, applied in the directions of non-polymer adhesive additives, adhesive types, adhesive additives, etc., can solve problems such as easy oxidation and corrosion, improve yield, reduce processes, Prevents the effect of orange peel

Inactive Publication Date: 2015-10-21
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper is known to have excellent electrical conductivity second only to silver and can be used as a wiring material, but it is easily oxidized and corroded

Method used

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  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, optical member, and touch panel
  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, optical member, and touch panel
  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, optical member, and touch panel

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0255] Tetrahydrodicyclopentadienyl methacrylate (DCPMA, tetrahydrodicyclopentadienyl methacrylate) 60 parts by weight, methyl methacrylate (MMA, methyl methacrylate) 40 Parts by weight, 3.5 parts by weight of α-thioglycerol as a chain transfer agent, and 100 parts by weight of toluene as a polymerization solvent were put into a four-necked flask, and stirred at 70° C. for 1 hour under a nitrogen atmosphere. Then, 0.2 parts by weight of 2,2'-azobisisobutyronitrile as a polymerization initiator was put into a four-necked flask, and reacted at 70°C for 2 hours, and then reacted at 80°C for 2 hours. Then, the reaction solution was placed in a temperature environment of 130° C., and the toluene, the chain transfer agent, and the unreacted monomer were removed by drying to obtain a solid acrylic polymer. In addition, this acrylic polymer is called "acrylic polymer (B-1)". In addition, the weight average molecular weight (Mw) of the acrylic polymer (B-1) was 5.1×10 3 .

Embodiment 1

[0257] In a monomer mixture composed of 68 parts by weight of 2-ethylhexyl acrylate (2EHA), 14.5 parts by weight of N-vinyl-2-pyrrolidone (NVP) and 17.5 parts by weight of 2-hydroxyethyl acrylate (HEA), Mix 0.035 parts by weight of a photopolymerization initiator (trade name "IRGACURE 184", manufactured by BASF Corporation) and 0.035 parts by weight of a photopolymerization initiator (trade name "IRGACURE 651", manufactured by BASF Corporation), and then irradiate ultraviolet rays until the viscosity (BH viscometer, No. 5 rotor, 10 rpm, measurement temperature 30° C.) to about 20 Pa·s to obtain a prepolymer composition in which a part of the above-mentioned monomer components were polymerized.

[0258] Then, in 100 parts by weight of the prepolymer composition, 5 parts by weight of the above-mentioned acrylic polymer (B-1), 0.075 parts by weight of hexanediol diacrylate (HDDA), a silane coupling agent (trade name "KBM -403", manufactured by Shin-Etsu Chemical Co., Ltd.) and 0....

Embodiment 2

[0262] Except having made the usage-amount of 1,2,3-benzotriazole into 0.1 weight part, it carried out similarly to Example 1, and obtained the base material-less double-sided adhesive sheet.

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Abstract

Provided is an optical member which has the excellent effect of being prevented from corroding, while retaining adhesion reliability and transparency to a high degree. A pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet are also provided with which it is possible to efficiently produce such optical member at a low cost. This pressure-sensitive adhesive composition is characterized by containing a rust preventive and either a mixture of monomer ingredients for constituting a base polymer or a product of partial polymerization of a mixture of monomer ingredients for constituting a base polymer, the monomer ingredients including no or substantially no acidic-group-containing monomer, and by containing no or substantially no organic solvent. The pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition.

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive layer, an adhesive sheet, an optical member, and a touch panel. Background technique [0002] In recent years, display devices such as liquid crystal displays (LCDs), input devices such as touch panels, and the like have been widely used in various fields. In the manufacture of these display devices or input devices, etc., the pressure-sensitive adhesive sheet is used for bonding optical members. For example, transparent pressure-sensitive adhesive sheets are used for bonding optical members in various display devices such as touch panels. [0003] In these display devices and input devices, there is a problem that metal wirings are corroded due to intrusion of moisture, acid gas, salt water, and corrosive components from the external environment into the inside. With the increase in size and frame narrowing of sensors in recent years, the number of examples provided with copper wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J201/00C09J7/02C09J11/06C09J133/00G06F3/041
CPCC09J7/0217C08K5/3472C09J133/14C09J133/18C09J133/26C09J2203/318C09J2205/102G06F3/0414G06F2203/04103C09J7/385Y10T428/2887C08K5/3475C09J2301/408C09K2323/03C09K2323/035C09K2323/057C09K2323/05B32B2457/202B32B2457/208C09J133/066C09J2400/163C09J2433/00C09J11/06G06F3/0412
Inventor 形见普史野中崇弘岸冈宏昭
Owner NITTO DENKO CORP
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