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Pressure-sensitive adhesive composition, pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, and optical member with pressure-sensitive adhesive layer obtained using same

A technology of optical components and adhesives, applied in the direction of non-polymer adhesive additives, adhesive types, adhesive additives, etc., can solve problems such as electrostatic damage, abnormal display, and adhesion of peripheral circuit components, and achieve adhesion Excellent physical properties and antistatic performance, light leakage prevention, and excellent durability

Inactive Publication Date: 2012-05-09
THE NIPPON SYNTHETIC CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When peeling off the isolation film and surface protection film from such optical parts, static electricity is generated, and the problem caused by this static electricity is that dust adheres to the optical parts, or abnormal display due to disorder of liquid crystal alignment occurs, or peripheral circuits are caused. Unfavorable conditions such as electrostatic damage to components
[0004] In addition, when the above-mentioned optical member provided with the adhesive layer is bonded to the liquid crystal cell, in the case of contamination of foreign matter, damage, adhesion failure, etc., it needs to be peeled off and bonded again. Above-mentioned similarly, the unfavorable situation that also has produced static electricity

Method used

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  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, and optical member with pressure-sensitive adhesive layer obtained using same
  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, and optical member with pressure-sensitive adhesive layer obtained using same
  • Pressure-sensitive adhesive composition, pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, and optical member with pressure-sensitive adhesive layer obtained using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6、 comparative example 1～4

[0282] The adhesive composition constituting the adhesive forming material for optical parts was prepared by mixing the ingredients prepared and prepared as described above in the ratios shown in Table 3 and Table 4 below, and diluted it with methyl ethyl ketone ( Viscosity (1000-10000mPa·s (25°C))) to prepare an adhesive composition solution.

[0283] Then, the above-mentioned adhesive composition solution was coated on a polyester-based release sheet so that the thickness after drying was 25 μm, and after drying at 90° C. for 3 minutes, the formed adhesive composition layer was transferred to On a polyethylene terephthalate (PET) film (thickness 38μm), using an electrodeless lamp manufactured by Fusion Inc. [H bulb of LH6UV lamp] according to peak illuminance: 600mW / cm 2 , Cumulative exposure: 240mJ / cm 2 UV irradiation (120mJ / cm 2 × 2 times), after that, aging for 10 days under the conditions of 23° C. × 65% RH to obtain a PET film with an adhesive layer.

Embodiment 7～12、 comparative example 5、6

[0285] The adhesive composition constituting the adhesive forming material for optical parts was prepared by mixing the ingredients prepared and prepared as described above in the ratios shown in Table 3 and Table 4 below, and diluted it with methyl ethyl ketone ( Viscosity (1000-10000mPa·s (25°C))) to prepare an adhesive composition solution.

[0286] Then, the above-mentioned adhesive composition solution was coated on a polyester-based release sheet so that the thickness after drying was 25 μm, and after drying at 90° C. for 3 minutes, the formed adhesive composition layer was transferred to On a polyethylene terephthalate (PET) film (thickness 38 μm), thereafter, it was aged at 23° C.×65% RH for 10 days to obtain a PET film with an adhesive layer.

[0287] Using the PET film with an adhesive layer obtained in this way, the surface resistivity and the gel fraction were measured and evaluated by various methods shown below. Their results are summarized in Tables 3 and 4 bel...

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Abstract

Disclosed is a pressure-sensitive adhesive characterized by being obtained by crosslinking a pressure-sensitive adhesive composition comprising an acrylic resin (A) and an ionic compound (B) that has a bis(fluorosulfonyl)imide anion and is solid at ordinary temperature. The pressure-sensitive adhesive is especially suitable for use in optical members, has an excellent balance between pressure-sensitive adhesive properties and antistatic performance, and has excellent adhesion in optical laminates, in particular, adhesion between a polarizer and a glass substrate, even under high-temperature high-humidity conditions. With the adhesive, a liquid-crystal display panel having excellent durability can be obtained in which neither bubble generation nor peeling occurs between the pressure-sensitive adhesive layer and the glass substrate and the polarizing film can be prevented from shrinking and thereby causing light leakage.

Description

technical field [0001] The present invention relates to an adhesive composition, an adhesive, an adhesive for an optical member, and an optical member with an adhesive layer obtained by using the same. Specifically, it relates to optical films (polarizing films, retardation films, optical compensation films, brightness enhancement films, etc.) suitable for image display devices such as liquid crystal display devices, organic EL display devices, and PDPs, and more specifically, polarizing films. Adhesive for optical components for bonding an optical laminate coated with a protective film such as a cellulose triacetate film to a glass substrate of a liquid crystal cell, and an adhesive with an adhesive layer composed of the adhesive for optical components Optical components with an adhesive layer, especially polarizing plates with an adhesive layer. Background technique [0002] Heretofore, a polarizing film such as a polarizing film such as a polyvinyl alcohol-based film tha...

Claims

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Application Information

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IPC IPC(8): C09J133/00C09J11/06C09J133/14G02B5/30
CPCC08K5/43C09J133/04
Inventor 铃木秀昭高木圣子
Owner THE NIPPON SYNTHETIC CHEM IND CO LTD
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