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Adhesive sheet and optical member

A technology of adhesive sheets and adhesives, applied in the direction of optical components, optics, adhesive types, etc.

Active Publication Date: 2015-02-11
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Therefore, the object of the present invention is to solve the problems in the conventional adhesive sheet, to provide a suitable adhesive force that does not cause warping or peeling over time, excellent re-peelability and workability, and has whitening resistance. Adhesive sheet (surface protection film) such as excellent overcoat

Method used

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  • Adhesive sheet and optical member
  • Adhesive sheet and optical member
  • Adhesive sheet and optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0408] [Preparation of binder solution]

[0409] The above-mentioned (meth)acrylic polymer solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and the organopolysilane 2.1 parts by weight (0.21 parts by weight of solid content) of a solution obtained by diluting oxane (KF-353, manufactured by Shin-Etsu Chemical Co., Ltd.) to 10%, the isocyanurate form of hexamethylene diisocyanate as a crosslinking agent (manufactured by Nippon Polyurethane Industries, Coronet HX) 1 part by weight (1 part by weight of solid content), 2 parts by weight of dibutyltin dilaurate (1 wt% ethyl acetate solution) as a crosslinking catalyst (0.02 parts by weight of solid content) ), mixed and stirred to prepare an acrylic adhesive solution.

[0410] [Production of adhesive sheet]

[0411] Apply the above-mentioned acrylic adhesive solution to the surface opposite to the overcoat E of the support film having the above-mentioned overcoat E (support film with an overcoat), and heat...

Embodiment 3

[0413] [Preparation of binder solution]

[0414] The above-mentioned (meth)acrylic polymer solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and the organopolysilane Oxane (KF-353, manufactured by Shin-Etsu Chemical Co., Ltd.) was diluted to 10% by weight of 2.1 parts by weight (0.21 parts by weight of solid content), and bis( Lithium trifluoromethanesulfonyl)imide (LiN(CF 3 SO 2 ) 2 : LiTFSI, manufactured by Tokyo Chemical Industry Co., Ltd.) diluted to 1% solution 6 parts by weight (solid content 0.06 parts by weight), the isocyanurate form of hexamethylene diisocyanate as a crosslinking agent (Nippon Polyurethane Industry Co., Ltd. Manufactured by the company, 1 part by weight of Coronet HX) (1 part by weight of solid content), 2 parts by weight of dibutyltin dilaurate (1 wt% ethyl acetate solution) as a crosslinking catalyst (0.02 parts by weight of solid content), and mixed With stirring, an acrylic adhesive solution was prepared.

[0415] [Pr...

Embodiment 8

[0418] Addition of 1-butyl-3-picoline as ionic liquid Bis(trifluoromethanesulfonyl)imide (BMPTFSI, manufactured by Sigma-Aldrich, liquid at 25° C.) was used as an antistatic agent in an amount of 0.2 parts by weight. Based on the compounding ratio in Table 1, it was the same as in Example 3. An adhesive sheet was produced.

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Abstract

A pressure-sensitive adhesive sheet having a supporting film, a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of the supporting film, and a top coat layer on the other surface opposite to the surface having the pressure-sensitive adhesive layer of the supporting film, wherein the top coat layer contains wax as a lubricant and a polyester resin as a binder and having the properties as defined.

Description

technical field [0001] The present invention relates to an adhesive sheet and an optical member. [0002] The pressure-sensitive adhesive sheet of the present invention is useful as a surface protection film used for the purpose of protecting the surface of optical members such as polarizing plates, wavelength plates, retardation films, optical compensation films, reflection sheets, and brightness enhancement films used in liquid crystal displays, etc. of. Background technique [0003] In recent years, when optical components and electronic components are transported or mounted on printed circuit boards, they are transferred in a state where each component is packaged in a predetermined sheet or in a state where an adhesive tape is attached. Among them, in the fields of optical and electronic components, surface protection films are particularly widely used. [0004] A surface protection film is generally bonded to an object to be protected with an adhesive applied to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08G02B1/10C09J7/29
CPCC09J2467/003C09J7/0217C09J2433/00C09J2203/318C09J2467/006C09J2491/006C09J7/29Y10T428/31663Y10T428/31786Y10T428/31797Y10T428/2848C09J7/20C09J2301/16C09J2301/122C09J7/385
Inventor 片冈贤一天野立巳新美健二郎春田裕宗
Owner NITTO DENKO CORP
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