Adhesive composition and adhesive sheet

A composition and adhesive technology, applied in the direction of adhesives, non-polymer organic compound adhesives, adhesive types, etc., can solve problems such as inability to achieve, and achieve the effect of excellent durability

Active Publication Date: 2010-09-01
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of various antistatic agents to the adhesive composition of this document has been studied, but the following performance cannot be achieved, that...

Method used

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  • Adhesive composition and adhesive sheet
  • Adhesive composition and adhesive sheet
  • Adhesive composition and adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0105] and

[0106] Adhesive compositions having blend compositions (in terms of solid content) shown in Table 1 were prepared, and samples were prepared according to the following processing procedures.

[0107] Next, the adhesive composition [diluted by adding toluene to a solid content of 20% by mass] was coated on a release film made of polyethylene terephthalate and having a thickness of 38 μm [manufactured by Lintec Corporation, " SP-PET3811” on the release layer so that the thickness after drying is 25 μm. The drying temperature was 90° C., and the drying time was 1 minute.

[0108] Thereafter, the polarizing plate with the discotic liquid crystal layer (viewing angle widening functional layer) was bonded so that the adhesive was in contact with the discotic liquid crystal layer. UV irradiation was performed from the side of the release film within 1 hour from the start of bonding to obtain a sample of a polarizing plate with an adhesive layer (hereinafter, simply r...

Embodiment 12

[0158] An adhesive composition having a blend composition (in terms of solid content) shown in Example 1 of Table 1 was prepared, and the adhesive composition [diluted with toluene to 20% by mass of solid content] was coated on the A peeling film made of polyethylene terephthalate and having a thickness of 38 µm [manufactured by Lintec, "SP-PET3811"] was placed on the peeling layer so that the thickness after drying was 25 µm. The drying temperature was 90° C., and the drying time was 1 minute.

[0159] Thereafter, lamination was performed so that the peeling layer of a peeling film made of polyethylene terephthalate and having a thickness of 38 μm [manufactured by Lintec, "SP-PET3811"] was in contact with the exposed surface of the layer obtained by the above-mentioned process.

[0160] Next, an adhesive sheet having a release film on both surfaces of the adhesive layer was obtained by irradiating the side of the release film ["SP-PET3801" manufactured by Lintec Co., Ltd., "S...

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Abstract

The invention provides an adhesive composition and adhesive sheet with an adhesive layer, the adhesive composition can be formed into the adhesive layer having excellent electrization with the surface resistivity of below 5 X 101 Omega, and having the transparency, durability and light leak resistance fully used in optics, namely, the invention provides the following adhesive composition and adhesive sheet with the adhesive layer formed by the same, characterized in that the adhesive composition contains (methyl) acrylic acid ester copolymers (A) having 1.0 to 15 wt.% of hydroxy-contained monomers as monomer composition units, (methyl) acrylic acid ester copolymers (B) having carboxyl-contained monomers as monomer composition units, lithium salts (C) and alkylene glycol dialkyl ether (D) with 2 to 10 oxyalkylenechain repeated units, moreover, the equivalent ratio of the carboxyl-contained monomers in the copolymers (B) to the hydroxy-contained monomers in the copolymer (A) is more than 0.3.

Description

technical field [0001] The present invention relates to an adhesive composition having antistatic properties and an adhesive sheet, and more specifically, to an adhesive composition having antistatic properties suitable for use in polarizers and retardation plates used in liquid crystal displays, etc. and adhesive sheets. Background technique [0002] When laminating optical components such as a polarizing plate and a retardation plate in a liquid crystal cell to produce a liquid crystal display, it is preferable to utilize a method of bonding through an adhesive layer. When such a method is specifically described, for example, an adhesive sheet is formed by forming an adhesive layer on an optical member, and the exposed surface side of the adhesive layer is bonded to a liquid crystal cell. In addition, as the previous stage of the above method, when obtaining an adhesive sheet composed of an optical member formed with an adhesive layer, it is also possible to form an adhes...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J133/10C09J11/04C09J11/06C09J7/02B32B7/06G02B5/30G02F1/1335
CPCC08K3/10C08K5/06C08K5/092C09J4/00C09J7/00C09J9/02C09J11/04C09J11/06C09J133/10
Inventor 又野仁小林真盛荒井隆行黑川敦史
Owner LINTEC CORP
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