Adhesive composition comprising ionic antistatic agent
A technology of antistatic agent and composition, which is applied in the field of adhesive composition, and can solve problems such as bleeding, excessive antistatic performance, and reduced durability
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Examples
manufacture example
[0112] Production example: Production of acrylic copolymer
[0113] Into a 1L reactor with refluxing nitrogen gas and equipped with a cooling device in a way that can easily adjust the temperature, was charged with 90 parts by weight of n-butyl acrylate, 7 parts by weight of methacrylate, and 2 parts by weight of 2-hydroxyethyl acrylate. , 1 part by weight of acrylic acid monomer mixture, and then put in 100 parts by weight of ethyl acetate as a solvent. After that, it was purged with nitrogen for 1 hour to remove oxygen, and then maintained at 62°C. After the above mixture was uniformly mixed, 0.07 parts by weight of azobisisobutyronitrile (AIBN) as a reaction initiator was added and reacted for 8 hours to produce an acrylic copolymer (weight average molecular weight approximately 1,000,000).
Embodiment
[0115] (1) Manufacturing of adhesive composition
[0116] An adhesive composition having the composition and content described in Table 1 below was produced.
[0117] (2) Manufacturing of adhesive sheet
[0118] After the adhesive composition is manufactured, it is applied to a film coated with a silicon release agent and dried at 100°C for 1 minute to form an adhesive layer of 25 μm.
[0119] Then, the release film was laminated on the adhesive layer to produce an adhesive sheet.
[0120] (3) Manufacturing of polarizing plate with adhesive
[0121] After the release film of the produced adhesive sheet was peeled off, the adhesive layer was laminated on an iodine-based polarizing plate containing a TAC protective film with a thickness of 185 μm to produce an adhesive-attached polarizing plate.
[0122] [Table 1]
[0123]
[0124]
[0125]
experiment example
[0127] The adhesive compositions of the Examples and Comparative Examples were applied to a release film coated with a silicon release agent so that the thickness after curing was 25 μm, and dried at 100° C. for 1 minute to form an adhesive layer.
[0128] After that, the adhesive layer produced as described above was laminated on both sides of an iodine-based polarizing film (total thickness of 185 μm) to which triacetyl cellulose-based protective films were bonded by an adhesive process to produce a polarizing plate. The manufactured polarizing plate was stored under the conditions of 23°C and 60% RH for 7 days.
[0129] (1) Heat resistance evaluation
[0130] The release film of the polarizing plate manufactured above was removed and joined to Corning Glass. After autoclave treatment, it was placed at a temperature of 60°C for 300 hours, and then the occurrence of bubbles or peeling was observed and evaluated. The evaluation was carried out after the above heat treatment and befo...
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