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Adhesive sheet, method for producing adhesive sheet, method for producing intermediate laminate, and intermediate laminate

A manufacturing method and adhesive layer technology, applied in chemical instruments and methods, synthetic resin layered products, film/sheet adhesives, etc., and can solve the problems of external light reflection, reflective glare, etc.

Active Publication Date: 2021-11-05
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic EL panel has a highly reflective electrode layer, so it is easy to generate external light reflection, background reflection glare, etc.

Method used

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  • Adhesive sheet, method for producing adhesive sheet, method for producing intermediate laminate, and intermediate laminate
  • Adhesive sheet, method for producing adhesive sheet, method for producing intermediate laminate, and intermediate laminate
  • Adhesive sheet, method for producing adhesive sheet, method for producing intermediate laminate, and intermediate laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0494] 95 parts by mass of butyl acrylate, 5 parts by mass of acrylic acid, 0.2 parts by mass of azobisisobutyronitrile as a polymerization initiator, and 233 parts by mass of ethyl acetate as a solvent was passed through nitrogen gas, and nitrogen substitution was performed for about 1 hour while stirring. Then, it heated to 60 degreeC, and it was made to react for 7 hours, and the solution of the adhesive polymer whose weight average molecular weight (Mw) was 600000 was obtained.

[0495] To the solution of the adhesive polymer, 0.075 parts by mass of TETRAD C as a crosslinking agent was added to 100 parts by mass of the adhesive polymer in the solution of the adhesive polymer. 100 parts by mass of the adhesive polymer in the solution is 2 parts by mass of BLACK ND1 (leuco dye), which is a compound colored by acid, relative to the adhesive polymer in the solution of the adhesive polymer 100 parts by mass of 10 parts by mass of CP-310B (photoacid generator) as an acid genera...

Embodiment 2

[0502] A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that UVA-TAC was used as the substrate B and the second pressure-sensitive adhesive layer A was used as the second pressure-sensitive adhesive layer.

[0503] In addition, the 2nd adhesive layer A was produced by the following method.

[0504] (Preparation of the second adhesive layer A)

[0505] 63 parts by mass of 2-ethylhexyl acrylate (2EHA), 15 parts by mass of N-vinylpyrrolidone (NVP), methyl 9 parts by mass of methyl acrylate (MMA), 13 parts by mass of hydroxyethyl acrylate (HEA), 0.2 parts by weight of azobisisobutyronitrile as a polymerization initiator, 233 parts by weight of ethyl acetate as a solvent, and nitrogen gas , nitrogen substitution was performed for about 1 hour while stirring. Then, it heated at 60 degreeC, it was made to react for 7 hours, and the 3rd adhesive composition whose weight average molecular weight (Mw) was 1,200,000 was obtained.

[0506] A po...

Embodiment 3

[0508] A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that UVA-TAC was used as the substrate B and UVA-OCA was used as the second pressure-sensitive adhesive layer.

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Abstract

An adhesive sheet (1) which comprises a first adhesive layer (2), a substrate (3) disposed on one surface of the first adhesive layer (2), and a second adhesive layer (4) disposed on one surface of the substrate (3). The first adhesive layer (2) comprises an adhesive composition which, upon irradiation with actinic rays, can decrease in the transmittance of visible light with 550-nm wavelength. The substrate (3) and / or the second adhesive layer (4) has an average transmittance for the actinic rays of 15% or less.

Description

technical field [0001] The present invention relates to a PSA sheet, a method for producing a PSA sheet, a method for producing an intermediate laminate, and an intermediate laminate. Specifically, it relates to a PSA sheet, a method for producing the PSA sheet, and an intermediate obtained by using the PSA sheet. A method for producing a laminate, and an intermediate laminate obtained by the method for producing an intermediate laminate. Background technique [0002] In recent years, displays equipped with organic EL panels have been known. Organic EL panels have highly reflective electrode layers, so reflections of external light and reflection glare from the background are likely to occur. [0003] In addition, it is known to provide a layer having a function of absorbing light on the reflective surface of the electrode layer in order to prevent external light reflection and background reflection glare. [0004] As such a layer, a light-absorbing layer containing a carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00B32B27/18C09J11/04C09J11/06C09J133/00C09J201/00C09J201/02G02B5/22C09J7/22C09J7/24C09J7/25C09J7/38B32B7/023
CPCC09J7/38C09J201/00C09J7/22C09J11/06C09J2301/416C09J7/24C09J7/25G02B1/04G02B5/00C09J2301/312
Inventor 仲野武史本田哲士尾崎真由舟木千寻
Owner NITTO DENKO CORP
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