Adhesive sheet and optical member

A technology of adhesive sheets and adhesives, which is applied in the direction of optical components, optics, adhesive types, etc., and can solve problems such as increased adhesive force

Inactive 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, provide excellent adhesiveness or re-peelability, pick-up property, workability, prevent the increase of adhesive force over time, and have 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

[0418] [Preparation of binder solution]

[0419] The above-mentioned (meth)acrylic polymer A solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and the organic poly Siloxane (KF-353, manufactured by Shin-Etsu Chemical Co., Ltd.) was diluted to 10% by weight of 2 parts by weight (0.2 parts by weight of solid content), and bis(tris) Lithium fluoromethanesulfonyl)imide (LiN(CF 3 SO 2 ) 2 : LiTFSI, produced by Tokyo Chemical Industry Co., Ltd.) diluted to 1% solution 5 parts by weight (solid content 0.05 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 Stirring was carried out to prepare an adhesive composition A (acrylic adhe...

Embodiment 2～6、10～11

[0422]

[0423] Based on the compounding ratio shown in the table, a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1. In addition, the compounding quantity in Table 1 shows solid content. In addition, additives not described in the table were prepared in the same compounding quantities as in Example 1. Regarding Examples 7 to 9, the same applies to additives not particularly described.

Embodiment 7

[0425] Except having added 1 weight part of acrylic oligomers, based on the compounding ratio of Table 1 and Table 2, it carried out similarly to Example 1, and produced the adhesive sheet.

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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 widely used. [0004] A surface protection film is generally bonded to an object to be protected with an adhesive applied to the side of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08G02B1/10
CPCC09J133/08C09J2201/606C09J2483/00C09J7/0217C09J2433/00C09J2467/005C09J2491/00C09J7/385C09J7/401Y10T428/2848C09J2301/302C08F220/1811C08F220/1808C08F220/1818C08F220/14C08F220/06C09J7/20C09J2301/16C09J2301/122
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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