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

A surface protective film and adhesive layer technology, applied in the directions of polymer adhesive additives, non-polymer adhesive additives, adhesive types, etc. Excellent electrostatic properties and long pot life

Active Publication Date: 2022-03-25
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 protection film, and optical member
  • Adhesive composition, adhesive layer, surface protection film, and optical member
  • Adhesive composition, adhesive layer, surface protection film, and optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0216] [Preparation of Acrylic Adhesive Solution]

[0217] The above-mentioned acrylic polymer 1 solution (40 mass %) was diluted with ethyl acetate to 20 mass %, and to 500 mass parts (solid content 100 mass parts) of this solution was added as a crosslinking agent, as a trifunctional isocyanate compound Isocyanurate form of hexamethylene diisocyanate (manufactured by Tosoh Corporation, "Coronate HX") 1.5 parts by mass (solid content 1.5 parts by mass), isophorone diisocyanate (Mitsui Chemicals) as a difunctional isocyanate compound Company product, "Takenate 600") 0.15 mass parts (solid content 0.15 mass parts), dioctyltin dilaurate as a crosslinking catalyst (Tokyo Fine Chemical Co., Ltd., "Embilizer OL-1", 1 mass % ethyl acetate solution ) 3 parts by mass (solid content 0.03 parts by mass), tris(acetylacetonato) iron (manufactured by Nippon Chemical Industries, Ltd., "Nacem Fe(III)", 1 mass % ethyl acetate solution) 0.5 mass parts (solid content 0.005 mass part), fluorine...

Embodiment 2

[0227] A surface protective film was produced by the same method as in Example 1, except that the acrylic polymer 2 was used in place 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, using triethylpentyl 0.1 part by mass of bis(trifluoromethanesulfonyl)imide salt (0.1 part by mass of solid content) instead of tributylmethyl A surface protection film was produced by the same method as in Example 1, except for 0.1 part by mass of bis(trifluoromethanesulfonyl)imide salt (0.1 part by mass of solid content).

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Abstract

The present invention relates to an adhesive composition, an adhesive layer, a surface protection film, and an optical member. The present invention provides an adhesive composition capable of obtaining an adhesive layer having a sufficiently long pot life, suppressing color change of the adhesive layer, and excellent antistatic properties, the adhesive A pressure-sensitive adhesive layer obtained by crosslinking the composition, a surface protection film obtained by forming the pressure-sensitive adhesive layer on a support, and an optical member protected by the surface protection film. The adhesive composition of the present invention is characterized in that, relative to 100 parts by mass of the polymer (A) having an active hydrogen functional group, the adhesive composition contains an isocyanate crosslinking agent (B), 0.001 parts by mass to 0.4 parts by mass of the compound (C) having tin as the active center, 0.001 to 0.4 parts by mass of the compound (D) having 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 pressure-sensitive adhesive layer obtained from the pressure-sensitive adhesive composition described above, and the surface protection film containing the pressure-sensitive adhesive layer are suitable for applications in which they are attached to plastic products that are prone to static electricity (for example, liquid crystal display panels, plasma display panel (PDP), organic electroluminescence (EL) display, etc.), which are used as polarizing plates, wave plates, retardation plates, optical compensation films, reflective sheets, The surface protective film used for the purpose of the surface such as a brightness enhancement film) is useful. Background technique [0002] The surface protective film usually has a structure in which a pressure-sensitive adhesive layer is provided on a film-shaped suppor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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