Pressure-sensitive adhesive for optical film, pressure-sensitive adhesive layer for optical film, its manufacturing method, pressure-sensitive adhesive optical film and image display device
A technology of optical film and adhesive layer, applied in the direction of adhesive type, ester copolymer adhesive, polyurea/polyurethane adhesive, etc., which can solve the problem of unexpectable improvement, adhesive sticking or contamination, etc. problems, to achieve fast processing, satisfying adhesion and good operability
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AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0103] (preparation of adhesive)
[0104] Add 100 parts of butyl acrylate and 0.3 parts of 2,2'-azobisisobutyronitrile together with ethyl acetate in a reaction vessel equipped with a condenser tube, a nitrogen gas introduction tube, a thermometer and a stirring device, and stir under nitrogen gas flow , After making it react at 60 degreeC for 4 hours, ethyl acetate was added to the reaction liquid, and the solution (30% of solid content concentration) containing the acrylic polymer with a weight average molecular weight of 1.65 million was obtained. With respect to 100 parts of solid content of the above-mentioned acrylic polymer solution, 0.2 part of dibenzoyl peroxide (manufactured by NOF Corporation: Naipa BO-Y), 0.07 part of trimethylolpropane xylyl peroxide, and 0.07 part of trimethylolpropane xylyl peroxide were mixed. Isocyanate (Mitsui Takeda Chemical Co., Ltd.: Takenet D110N) and 0.2 parts of a silane coupling agent (manufactured by Soken Chemical Co., Ltd.: A-100, c...
Embodiment 2
[0108] (preparation of adhesive)
[0109] In Example 1, 0.2 parts of dibenzoyl peroxide (NOF Corporation: Naipa BO-Y), 0.15 parts of trimethylol peroxide, and 0.15 parts of trimethylol Propane xylyl diisocyanate (Mitsui Takeda Chemical Co., Ltd.: Takenet D110N), 0.2 parts of silane coupling agent (manufactured by Soken Chemical Co., Ltd.: A-100, containing acetoacetylsilane coupling agent), and other , others are all operated in the same manner as in Example 1 to obtain an acrylic adhesive.
[0110] (Production of adhesive optical film)
[0111] The above-mentioned adhesive was applied to a separator made of a polyester film surface-treated with a silicone-based release agent, and heat-treated at 150° C. for 5 minutes to obtain an adhesive layer with a thickness of 20 μm. The separator having the above-mentioned pressure-sensitive adhesive layer was transferred to one side of the polarizing plate A to prepare a pressure-sensitive adhesive polarizing plate.
Embodiment 3
[0113] (preparation of adhesive)
[0114] In Example 1, 0.2 parts of dibenzoyl peroxide (manufactured by NOF Corporation: Naipa BO-Y), 0.6 parts of trimethylol peroxide, and 0.6 parts of trimethylol Propane xylyl diisocyanate, 0.2 parts of silane coupling agent (made by Soken Chemical Co., Ltd.: A-100, containing acetoacetyl silane coupling agent), except that, others are all operated in the same way as in Example 1 to obtain acrylic acid adhesive.
[0115] (Production of adhesive optical film)
[0116] The adhesive obtained above was coated on a separator made of a polyester film surface-treated with a silicone-based release agent, and heat-treated at 150° C. for 5 minutes to obtain an adhesive layer with a thickness of 20 μm. The above-described separator having the pressure-sensitive adhesive layer was transferred onto the polarizing plate A to obtain an adhesive polarizing plate.
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Abstract
Description
Claims
Application Information
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