Adhesive composition, adhesive layer, surface protecting film and optical member

A surface protection film and adhesive layer technology, which is applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive types, etc., can solve the problem of color change of the adhesive layer and achieve anti- Excellent electrostatic properties and long pot life

Active Publication Date: 2018-08-10
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the case of using a compound containing an iron atom as a metal catalyst, although a composition with a long pot life of the adhesive composition is obtained, the adhesive layer obtained by crosslinking the adhesive composition may be Problem of color tone change of the adhesive layer due to coloration by iron atom-containing compounds (coloration due to metal complexes in iron atom-containing compounds)

Method used

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  • Adhesive composition, adhesive layer, surface protecting film and optical member
  • Adhesive composition, adhesive layer, surface protecting film and optical member
  • Adhesive composition, adhesive layer, surface protecting film and optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0216] [Preparation of Acrylic Binder Solution]

[0217] The above-mentioned acrylic polymer 1 solution (40% by mass) was diluted to 20% by mass with ethyl acetate, and to 500 parts by mass of this solution (100 parts by mass of solid content) was added as a crosslinking agent and as a trifunctional isocyanate compound. 1.5 parts by mass (1.5 parts by mass of solid content) of isocyanurate form of hexamethylene diisocyanate (manufactured by Tosoh Corporation, "Coronate HX"), isophorone diisocyanate as a difunctional isocyanate compound (Mitsui Chemicals Made by the company, "Takenate 600") 0.15 parts by mass (solid content 0.15 parts by mass), dioctyltin dilaurate as a crosslinking catalyst (manufactured by Tokyo Fine Chemical Co., Ltd., "Embilizer OL-1", 1 mass % ethyl acetate solution ) 3 parts by mass (0.03 parts by mass of solid content), 0.5 parts by mass of tris(acetylacetonate)iron (manufactured by Nippon Chemical Industry Co., Ltd., "Nacem Fe(III)", 1 mass % ethyl acet...

Embodiment 2

[0227] A surface protection film was produced by the method similar to Example 1 except having used the acrylic polymer 2 instead of the acrylic polymer 1 used in Example 1.

Embodiment 3

[0229] Using Acrylic Polymer 2 instead of Acrylic Polymer 1 used in Example 1, triethylpentyl ・Bis(trifluoromethanesulfonyl)imide salt) 0.1 part by mass (solid content 0.1 part by mass) instead of tributylmethyl - A surface protection film was produced in the same manner as in Example 1 except that bis(trifluoromethanesulfonyl)imide salt) was 0.1 parts by mass (solid content: 0.1 parts by mass).

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PUM

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Abstract

The invention relates to an adhesive composition, an adhesive layer, a surface protecting film and an optical member. The invention provides an adhesive composition capable of suppressing tonal variation of an adhesive layer and having long service lifetime and excellent anti-static property, an adhesive layer obtained by cross-linking of the adhesive composition, a surface protecting film obtained by forming the adhesive layer on a support body, and an optical member protected by the surface protecting film. The adhesive composition is characterized in that relative to 100 parts by mass of apolymer (A) containing an active hydrogen functional group, the adhesive composition includes an isocyanate-containing cross-linking agent (B), 0.001-0.4 part by mass of a compound (C) regarding tin as the active center, 0.001-0.4 part by mass of a compound (D) regarding iron as the active center, and an antistatic agent (E).

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive layer, a surface protection film, and an optical member. In particular, the adhesive layer obtained from the above-mentioned adhesive composition and the surface protective film comprising the above-mentioned adhesive layer are suitable for sticking to plastic products that are prone to static electricity (for example, liquid crystal display panels, plasma display panels, etc.) panel (PDP), organic electroluminescence (EL) display, etc.), among them, as a polarizing plate, a wave plate, a phase difference plate, an optical compensation film, a reflection sheet, The surface protection film used for the purpose of the surface such as brightness enhancement film is useful. Background technique [0002] A surface protection film generally has a structure in which an adhesive layer is provided on a film-like support (substrate). The protective film is attached to an adherend (protected ...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/30C08F220/18C08F220/20C08F220/06C09D167/00C09D191/06C09D5/24C09D7/63C09D7/65C08G18/62C08G18/73C08G18/75C09J175/04C09J11/06C09J11/08
CPCC09D7/63C09D7/65C09D167/00C09J7/255C09J11/06C09J11/08C09J175/04C08F220/18C08G18/6229C08G18/722C08G18/73C08G18/755C09D5/24C08L2205/035C09J2433/00C09J2467/006C08F220/1808C09J2301/312C09J2301/408C09J2301/414C08L91/06C08L65/00C08L25/18C08F220/20C08F220/06C09J183/04C09J133/00C09J11/00C09K3/16C09J7/20
Inventor 山形真人片冈贤一小川圭太夏井正赖天野立巳
Owner NITTO DENKO CORP
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