Thermoplastic saturated norbornene resin film, and method for producing same
A technology of norbornene and its manufacturing method, which is applied in the field of thermoplastic saturated norbornene-based resin films, and can solve the problems that it cannot be used as an optical film, and the transmittance of parallel light rays of the film is poor, etc.
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Embodiment 1
[0121] (1) Production of TPSNB resin film
[0122]TPSNB-based resin (manufactured by JSR Corporation, ARTON G6810: glass transition temperature 164°C, refractive index 1.52) and styrene-based elastomer (manufactured by Asahi Kasei Corporation, Tuftec H1041: refractive index 1.51, styrene content) were mixed at a weight ratio of 90:10. 32%, ethylene content 43%) were supplied to a twin-screw melt extruder, melt-mixed and granulated at 286° C., and pre-dried at 110° C. for 3 hours to prepare a TPSNB-based resin composition.
[0123] Using the produced TPSNB-based resin composition, extrusion molding was performed under the temperature conditions described in Table 1 through the following extruder, T-die, and resin filter to obtain an optical film with an average thickness of 40 μm.
[0124] Extruder: a single-screw extruder with a T-shaped die with a diameter of 90mm and L / D=28
[0125] T-shaped die: 1500mm wide coat hanger type, H-Cr plating on the surface of the resin flow pa...
Embodiment 2
[0135] TPSNB-based resin (manufactured by JSR Corporation, ARTONG6810) and styrene-based elastomer (manufactured by KARTON Polymer Corporation, G1652) used in Example 1 were used in a weight ratio of 85:15: refractive index 1.52, styrene content 28%, ethylene Content 45%) is supplied to the twin-screw melt extruder, melted and mixed at 286° C., and sent into a T-die whose temperature is adjusted to 286° C. with a residence time of 30 minutes. Except having adopted the conditions shown in Table 1, it carried out similarly to Example 1, and produced the TPSNB type resin film of thickness 30 micrometers. Using the produced TPSNB-based resin film as a polarizer protective film, a polarizer was produced in the same manner as in Example 1.
Embodiment 3
[0137] The TPSNB-based resin (JSR Corporation, ARTONG6810) and styrene-based elastomer (Asahi Kasei Corporation, Tuftec1041) used in Example 1 were supplied to a twin-screw melt extruder at a weight ratio of 90:10. Melt-mixed and fed into a T-die whose temperature was adjusted to 293° C. with a residence time of 30 minutes. Except having adopted the conditions shown in Table 1, it carried out similarly to Example 1, and produced the TPSNB type resin film of thickness 30 micrometers. Using the produced TPSNB-based resin film as a polarizer protective film, a polarizer was produced in the same manner as in Example 1.
[0138] For the TPSNB-based resin used, the glass transition temperature was measured with DSC (manufactured by SEIKO INSTRUMENTS, DSC6200R) while flowing nitrogen gas at a rate of 60 mL / min after maintaining at 293°C under 99.9% nitrogen gas flushing, The time until the glass transition temperature rose by 1° C. was found to be 40 hours.
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