Polarizing plate with Anti-reflection layer and method for producing same
An anti-reflection layer and manufacturing method technology, applied in the direction of polarizing elements, chemical instruments and methods, layered products, etc., can solve the problems of poor appearance, poor appearance, and uneven hue difference of polarizers, and achieve optical reliability and suppression bad appearance effect
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[0093] Hereinafter, the present invention will be specifically described through examples, but the present invention is not limited to these examples. In addition, the measuring method of each characteristic is as follows.
[0094] (1) The moisture permeability of the polarizer
[0095] The polarizing plate (polarizer laminate) used in the Examples and Comparative Examples was cut into a circle of 10 cmΦ and used as a measurement sample. After leaving the measurement sample at a temperature of 40°C and a humidity of 92%RH for 24 hours, the moisture permeability was measured under test conditions of a temperature of 40°C and a humidity of 90%RH using "MOCON" manufactured by Hitachi, Ltd. .
[0096] (2) The moisture permeability of the substrate
[0097] For the films used as substrates in the examples and comparative examples, in accordance with the moisture permeability test of JIS Z0208 (cup method), measured in an environment with a temperature of 40°C and a humidity of 92%RH, and...
manufacture example 1
[0108] Production of acrylic resin film 1
[0109] Add methyl methacrylate (MMA), 2-(hydroxymethyl) methyl acrylate (MHMA), and toluene into a reactor equipped with a stirring device, temperature sensor, condenser, and nitrogen introduction tube, and extrude at 250°C Cyclization condensation reaction and devolatilization are carried out in the machine to obtain transparent acrylic resin particles containing lactone ring. The obtained pellets were mixed with an acrylonitrile-styrene resin, melt-kneaded using a twin-screw extruder at a cylinder temperature of 240°C, and then pelletized.
[0110] The obtained pellets were put into a single screw extruder, melted and mixed, and formed into a film through a T-die.
[0111] The obtained extruded film was simultaneously biaxially stretched to 2 times in the length direction and the width direction at a stretching temperature of 160°C. The thickness of the obtained film was 40 μm. The resin composition ratio of the obtained film was conf...
manufacture example 2
[0112] Production of acrylic resin film 2
[0113] Add methyl methacrylate (MMA), 2-(hydroxymethyl) methyl acrylate (MHMA), toluene, and polystyrene into a reactor equipped with a stirring device, temperature sensor, condenser, and nitrogen introduction pipe. Cyclization condensation reaction and devolatilization are carried out in the extruder at ℃ to obtain transparent lactone ring-containing acrylic resin particles. The obtained pellets were put into a single screw extruder, melted and mixed, and formed into a film through a T-die. The obtained extruded film was simultaneously biaxially stretched to 2 times in the length direction and the width direction at a stretching temperature of 160°C. The thickness of the obtained film was 40 μm. The resin composition ratio of the obtained film was confirmed by NMR. As a result, it was 76% MMA, 19% lactone ring, and 5% styrene.
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Abstract
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