Adhesive composition, adhesive sheet, and optical member

A composition and adhesive technology, which is applied in the direction of optical components, conductive adhesives, adhesive types, etc., can solve the problems of specific metal usage concerns and restrictions, and achieve excellent adhesive properties and excellent pot life.

Active Publication Date: 2013-10-23
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, from the standpoint of dealing with the environment, there is concern that the use of specific metals will be restricted by laws and regulations.

Method used

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  • Adhesive composition, adhesive sheet, and optical member
  • Adhesive composition, adhesive sheet, and optical member
  • Adhesive composition, adhesive sheet, and optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] [Preparation of binder solution]

[0156] The above-mentioned (meth)acryl-based polymer solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and 500 parts by weight of the solution (100 parts by weight of solid content) was added to have an oxyalkylene group in the side chain. Organopolysiloxane (trade name: KF-353, manufactured by Shin-Etsu Silicone Co., Ltd., HLB value 10) diluted with ethyl acetate to 10% solution 2 parts by weight (solid content 0.2 parts by weight), will be used as an anti- Lithium bis(trifluoromethanesulfonyl)imide (LiN(CF 3 SO 2 ) 2 : LiTFSI, produced by Tokyo Chemical Industry Co., Ltd.), 5 parts by weight of a solution diluted to 1% with ethyl acetate (0.05 parts by weight of solid content), and the isocyanurate body of hexamethylene diisocyanate as a crosslinking agent (Japan Coronate HX manufactured by Polyurethane Industry Co., Ltd.) 1.5 parts by weight (solid content: 1.5 parts by weight), tris(acetylacetonate)iron (...

Embodiment 2～11、 comparative example 1～5

[0160]As shown in Table 1, a (meth)acryloyl-based polymer (may be simply referred to as a polymer) was prepared in the same manner as in Example 1 by changing the types, compounding amounts, and the like of the raw material monomers. It should be noted that additives not listed in the table were prepared in the same compounding quantities as in Example 1. Moreover, using the said polymer, it carried out similarly to Example 1, and obtained the adhesive composition and adhesive sheet (surface protection film).

Embodiment 12

[0162] In Example 12, 0.2 parts by weight of a polyether-type surfactant not containing organopolysiloxane (trade name 17R-4, manufactured by ADEKA Co., Ltd., number average molecular weight 2500, PO content 60% by weight) was used instead of In Example 1, except that 0.2 parts by weight of the above-mentioned organopolysiloxane (trade name: KF-353, manufactured by Shin-Etsu Silicone Co., Ltd., HLB value: 10) was used, it was carried out in the same manner as in Example 1, etc., to obtain Adhesive composition and adhesive sheet (surface protection film).

[0163] [evaluate]

[0164] The (meth)acryl-based polymer (polymer), the adhesive composition (solution), and the adhesive sheet obtained in Examples and Comparative Examples were evaluated by the following measurement methods or evaluation methods. In addition, as evaluation results, the evaluation of the physical properties of the polymer is shown in Table 1, the evaluation of the adhesive composition is shown in Table 2, ...

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Abstract

The present invention provides a pressure-sensitive adhesive composition which can form a pressure-sensitive sheet excellent in adhesive properties (adherability, easy peeling property at the time of high speed peeling, and re-peeling property) and the antistatic property and which has long pot life. The pressure-sensitive composition of the present invention is a pressure-sensitive adhesive composition comprising a (meth)acryl-based polymer composed of, as raw material monomers, a (meth) acryl-based monomer having an alkyl group of 1 to 14 carbon atoms and a hydroxyl group-containing (meth) acryl-based monomer, an alkali metal salt, and a catalyst having iron as an active center, wherein the hydroxyl group-containing (meth)acryl-based monomer is contained in an amount of 6 parts by weight or more to 100 parts by weight of the (meth) acryl-based monomer having an alkyl group of 1 to 14 carbon atoms.

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive sheet and an optical part. [0002] The adhesive composition of the present invention can be suitably used for bonding the surfaces of optical components such as polarizing plates, wave plates, retardation plates, optical compensation films, reflection sheets, and brightness enhancement films used in liquid crystal displays, etc. Sheet (surface protection film), is useful. Background technique [0003] In recent years, when optical components and electronic components are transported and mounted on a printed circuit board, they are transferred in a state where each component is packaged with a predetermined sheet or in a state where an adhesive tape is attached. Among these, surface protection films are widely used in the field of optical and electronic components. [0004] A surface protection film is generally bonded to an adherend through an adhesive applied on the base material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J183/06C09J11/06C09J7/02
CPCC09J133/062C09J133/064C08K3/24C08K5/29C08K5/43C09J175/04C09J2203/318C08K5/0091C09J2201/602C09J9/02C09J7/0217C08K5/098C09J133/066C09J2205/102C08G18/6229C08G18/6254C08G18/792C08L83/08C09J7/385C09J2301/314C09J2301/408Y10T428/2848Y10T428/2857C08F220/1808C08F220/20C08F220/06C09J133/04C09J183/02C09J2301/312G02B5/00G02B5/005
Inventor 片冈贤一天野立巳
Owner NITTO DENKO CORP
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