Manufacturing method for coating liquid, plate with coating having phase retardation, and compound polarizing plate
A technology of phase retardation and coating sheet, applied in coating, polarizing element, chemical instrument and method, etc., can solve the problem of glass adhesion drop of liquid crystal element
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Embodiment 1
[0100] (a) Preparation of phase retardation coating sheet
[0101] The following components were mixed and filtered through a membrane filter with a pore size of 6 μm.
[0102] Polyurethane resin varnish "SBU Lacquer 0866": 7.5 parts
[0103] Organically modified clay compound "Lucentite STN": 6.8 parts
[0104] Toluene: 85.7 parts
[0105] 0.3 part of unmodified clay mineral "Lucentite SWN" was added as an adsorbent, and the mixture was stirred for 120 minutes, followed by filtration with a membrane filter having a pore size of 6 µm, thus making a coating liquid. The content concentration of the coating liquid was 9%, and the solid weight ratio of organically modified clay composite / urethane resin was 3 / 1. The coating liquid was coated with a coater on a polyethylene terephthalate film having a thickness of 38 μm (the contact angle of the surface treated with mold release with water was 110°) ), followed by drying at 50° C. for 1 minute and then at 90° C. for 3 minutes, t...
Embodiment 2
[0111] (a) Preparation of phase retardation coating sheet
[0112] Polyurethane resin varnish "SBU Lacquer 0866", organically modified clay compound "LucentiteSTN" and toluene were mixed to have the same composition as in Example 1, and filtered with a membrane filter having a pore size of 6 μm. To the filtered mixed liquid was added 12.0 parts of anion exchange resin "Duolite A161TRS04" as an adsorbent, and the mixture was stirred for 30 minutes, then, the mixed liquid was filtered with a membrane filter having a pore size of 6 µm, thus preparing a coating liquid. As a result of filtration, the anion exchange resin is completely removed from the coating liquid. Under the same conditions as in Example 1, this coating liquid was applied to a polyethylene terephthalate film having a thickness of 38 μm on which a release treatment was performed, followed by drying to obtain a coating Phase retarder coated on film. The phase retardation value of this coating is R 0 = 0 nm, R' =...
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