Optical film, polarizing plate, and method for producing optical film
一种光学膜、偏振片的技术,应用在光学膜领域,能够解决着色等问题,达到着色问题减少、制造工序高效化、对比度高的效果
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Embodiment 1-1
[0316]
[0317] As the support, a commercially available triacetyl cellulose film "Z-TAC" (manufactured by Fujifilm Corporation) was used. Pass it through a dielectric heating roll support whose temperature is adjusted to 60°C, raise the film surface temperature of the support to 40°C, and then apply a coating amount of 14ml / m on one side of the film using a bar coater 2 An alkali solution having the composition shown below was applied and heated to 110°C. Thereafter, the support was conveyed for 10 seconds under a vapor-type far-infrared heater manufactured by NORITAKE CO., LIMITED. Next, use the same bar coater to coat the surface coated with the alkali solution at 3ml / m 2 Apply pure water. Next, water washing with a jet coater and water removal with an air knife were repeated three times, and then transported in a drying zone at 70°C for 10 seconds and dried to prepare a transparent support treated with alkali saponification. .
[0318]
[0319]
[0320]
[03...
Embodiment 1-2
[0348]
[0349] Alkaline saponification treatment was performed on the surface of the support of the cellulose triacetate film TD80UL (manufactured by Fujifilm). Specifically, the support was immersed in a 1.5N aqueous sodium hydroxide solution at 55°C for 2 minutes, washed in a water bath at room temperature, and neutralized at 30°C with 0.1N sulfuric acid. After washing again in a water bath at room temperature, it was further dried with warm air at 100°C.
[0350] A roll-shaped polyvinyl alcohol film with a thickness of 80 μm was continuously stretched 5 times in the MD direction in an iodine aqueous solution in the same manner as in Example 1-1, and dried to obtain a polarizing film with a thickness of 20 μm.
[0351] By sticking the positive C-plate side of the optical film 1 made above on one side of the above-mentioned polarizing film, and further sticking the above-mentioned cellulose triacetate film through alkali saponification treatment on the other side of the po...
Embodiment 2
[0353]
[0354] The following positive coating liquid 2 for plate A was prepared.
[0355]
[0356] [chem 28]
[0357] Reverse wavelength dispersion liquid crystal compound R-2: specific example II-2-2
[0358]
[0359] Cross-linked polymer O-2
[0360]
[0361] However, Tg=10 degreeC of crosslinkable polymer O-2.
[0362]A triacetyl cellulose film having an alignment film 1 on its surface was produced in the same procedure as in Example 1-1, and the alignment film 1 was rubbed. The positive A-plate A-0 forming coating liquid 2 was coated on the friction-treated surface using a bar coater. Next, heat curing was carried out at a film surface temperature of 150°C for 60 seconds, cooled to 70°C, and then irradiated at 1000mJ / cm in the atmosphere using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.). 2 The ultraviolet rays fix its orientation state to form a positive A-plate A-0(2). The direction of the slow axis of the formed positive A pl...
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