Radiation-curable pressure-sensitive adhesive composition for optical members, and pressure-sensitive adhesion type optical members
A technology of pressure-sensitive adhesives and optical components, applied in the direction of adhesive types, film/sheet adhesives, non-polymer organic compound adhesives, etc., can solve pressure-sensitive adhesive adhesion Problems such as lowering, deterioration of transparency, color change of pressure-sensitive adhesives, etc.
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Embodiment 1
[0334] As shown in Table 1, 1 part by weight of KAYARAD R-551, 10 parts by weight of UA-306T, 4 parts by weight of IRGACURE500, and 1 0.5 parts by weight of Coronet L and 0.4 parts by weight of KBM-403 were mixed to obtain a pressure-sensitive adhesive composition 1.
[0335] The obtained pressure-sensitive adhesive composition 1 was applied on a polyester film (PET3811, manufactured by Lintec Co., Ltd.) subjected to release treatment to form a pressure-sensitive adhesive layer, and further dried in a drying oven at 80° C. for 2 minutes. , a pressure-sensitive adhesive sheet 1 having a pressure-sensitive adhesive layer having a thickness of 25 μm after drying was obtained.
[0336] The obtained pressure-sensitive adhesive sheet 1 was attached to one side of a polarizing film (made of polyvinyl alcohol), and a UV irradiator (light source: high-pressure mercury lamp) with a conveyor belt was used with a lamp output of 160 W, an irradiation distance of 10 cm, and an integrated li...
Embodiment 2
[0339] The compounding amount of KAYARAD R-551 was changed from 1 part by weight to 5 parts by weight, and 10 parts by weight of UA-306T was changed to 20 parts by weight of KAYARAD DPHA, except that it was prepared in the same manner as in Example 1 to obtain a pressure-sensitive adhesive Mixture composition 2 and pressure-sensitive adhesive polarizing film 2. Moreover, each physical property of the obtained pressure-sensitive adhesive polarizing film 2 was evaluated similarly to Example 1. The obtained results are shown in Table 2.
Embodiment 3
[0341] Except that KAYARAD R-551 was changed to BP-4PA, and UA-306T was changed to EBECRYL140, it was prepared in the same manner as in Example 1 to obtain a pressure-sensitive adhesive composition 3 and a pressure-sensitive adhesive polarizing film. 3. Moreover, each physical property of the obtained pressure-sensitive adhesive polarizing film 3 was evaluated similarly to Example 1. The obtained results are shown in Table 2.
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