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Adhesive agent composition and adhesive sheet

A composition and adhesive technology, applied in adhesive types, hydrocarbon copolymer adhesives, conjugated diene adhesives, etc., can solve the problem of insufficient adhesion and holding force, and deterioration of component characteristics , can not meet the problems of moisture resistance and moisture resistance, and achieve the effect of excellent inhibition effect, deterioration of inhibition characteristics, and good transparency

Active Publication Date: 2015-06-17
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, for the above-mentioned prior art, there are cases where the organic light-emitting layer and the electron transport layer are thermally degraded by heating in the sealing process; A large amount of ultraviolet rays may degrade the organic light emitting layer and electron transport layer
In addition, if the sealing material is a cured product, cracks and the like are likely to occur due to the impact and vibration generated when the product is used, resulting in deterioration of device characteristics.
In addition, according to Patent Document 4, the adhesive force and holding force used only as a sealing material are insufficient, and the required levels of moisture resistance and moisture resistance cannot be met.

Method used

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  • Adhesive agent composition and adhesive sheet
  • Adhesive agent composition and adhesive sheet
  • Adhesive agent composition and adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A～5A

[0343] (1) Preparation of adhesive composition solution

[0344] Components (A) to (C) were added according to the types and compounding amounts (solid content ratio) shown in Table 1, and dissolved in toluene to prepare an adhesive composition solution having a solid content concentration of 20% by mass.

[0345] In addition, the details of the components (A)-(C) shown in Table 1 used in Examples 1A-5A are as follows.

[0346]

[0347] - "Oppanol B50" (trade name, manufactured by BASF Corporation): a weight average molecular weight of 340,000.

[0348] - "Oppanol B30" (trade name, manufactured by BASF Corporation): a weight average molecular weight of 200,000.

[0349]

[0350] ・"P-907Y" (trade name, manufactured by TOYO ADL CORPORATION)

[0351] Mixed resin containing SEBS and SEB, content of SEBS and SEB = 30% by mass, softening point = 112°C.

[0352] ・"P-907NA" (trade name, manufactured by TOYO ADL CORPORATION)

[0353] Mixed resin containing SEBS and SEB, content...

Embodiment 1B～9B

[0379] [Examples 1B to 9B, Comparative Examples 1B to 5B]

[0380]Components (A) to (C) were added and dissolved in toluene according to the types and compounding amounts (solid content ratio) shown in Table 2 to prepare an adhesive composition solution with a solid content concentration of 20% by mass.

[0381] Then, using these prepared PSA composition solutions, a PSA sheet with a base material and a PSA sheet without a base material were produced in the same manner as in Examples 1A to 5A described above.

[0382] In addition, the detail of the component (A)-(C) in Table 2 is as follows.

[0383]

[0384] "PIB resin mixture": a polyisobutylene resin mixture containing the following ratio "Oppanol B50 (trade name, manufactured by BASF Corporation, polyisobutylene resin with Mw: 340,000)" / "Oppanol B30 (trade name, manufactured by BASF Corporation) , Mw: 200,000 polyisobutylene resin)"=10 / 1 (mass ratio).

[0385]

[0386] "Kraton G1726" (trade name, manufactured by Krat...

Embodiment 1C～26

[0398] [Examples 1C to 26C, Comparative Examples 1C to 11C]

[0399] According to the type and compounding amount (solid content ratio) shown in Table 3-1 or Table 3-2, components (A) to (C) and thickener were added and dissolved in toluene to prepare a solid content concentration of 20 mass % adhesive composition solution.

[0400] Then, using these prepared PSA composition solutions, a PSA sheet with a base material and a PSA sheet without a base material were produced in the same manner as in Examples 1A to 5A described above.

[0401] In addition, the details of the components (A)-(C) and thickener in Table 3-1 and Table 3-2 are as follows.

[0402]

[0403] "Isobutylene-isoprene copolymer"

[0404] Made by Japan Butyl Corporation, trade name "Exxon Butyl 268", Mw: 260,000, content of structural unit derived from isobutylene: 98.3 mol%, content of structural unit derived from isoprene: 1.7 mol%.

[0405]

[0406] · "Kraton G1726" (trade name, manufactured by Kraton ...

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Abstract

An adhesive sheet having an adhesive agent layer made from an adhesive agent composition comprising (A) a polyisobutylene resin having a mass average molecular weight of 20,000 or more, (B) a styrene copolymer and (C) an adhesiveness-imparting agent having a softening point of 135˚C or lower, wherein the component (B) comprises at least one compound selected from the group consisting of a styrene-butadiene-styrene triblock copolymer (SBS), a styrene-block-(ethylene-co-butylene)-block-styrene triblock copolymer (SEBS), a styrene-isobutylene diblock copolymer (SIB) and a styrene-isobutylene-styrene triblock copolymer (SIBS). The adhesive sheet has excellent adhesion performance, an excellent effect of preventing the invasion of water, and good transparency.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet, and more specifically, to a display device suitable for use in, for example, an organic EL element of electroluminescence (electroluminescence, hereinafter referred to as "EL") using an organic material. Adhesive composition and adhesive sheet for sealing electronic devices. Background technique [0002] In recent years, organic electronics technology has attracted attention as a technology for forming displays, circuits, batteries, etc. on flexible plastic substrates at low temperatures close to room temperature by coating or printing processes. Etc. various research and development. [0003] For example, an organic EL element used in an organic device has an organic layer in which an organic electron transport layer and an organic light-emitting layer are stacked between the anode and the cathode, and has been received as a light-emitt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/22B32B27/00C09J7/00C09J7/02C09J11/06C09J109/06C09J123/08C09J153/02H01L51/50H05B33/04H10K99/00
CPCC09J123/08C09J123/22C09J153/02H05B33/04C09J2423/00C09J2453/00B32B27/06B32B27/12B32B27/302B32B2307/7242B32B2307/748B32B2457/00B32B2457/202C09J2203/318C09J7/381C09J7/387Y10T428/31938H10K50/8426H10K85/111H10K85/141H10K85/151C09J125/08
Inventor 中山秀一上村和惠小野义友西岛健太
Owner LINTEC CORP
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