Transferable liquid crystal laminate
A technology of liquid crystal layer and transferability, which is applied in the field of transferable liquid crystal laminates, and can solve the problems of poor foil separation characteristics, inability to perform sufficient transfer, residue, etc.
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reference example 1
[0058] Using 50mmol of terephthalic acid, 20mmol of hydroxybenzoic acid, 20mmol of catechol, 10mmol of (R)-2-methyl-1,4-butanediol and 100mg of sodium acetate, press 180°C for 1 hour under nitrogen atmosphere , 1 hour at 200°C, and 1 hour at 250°C, the polycondensation reaction proceeds while the temperature is raised.
[0059] Next, the polycondensation reaction was continued at 250° C. for 2 hours while nitrogen was passed, and then the polycondensation was carried out at the same temperature under reduced pressure for 1 hour. The obtained polymer was dissolved in tetrachloroethane, and reprecipitated with methanol to obtain a liquid crystalline polyester.
[0060] An N-methyl-2-pyrrolidone solution (20% by weight) of the obtained liquid crystalline polyester was prepared, and the solution was applied to a rubbed polyphenylene sulfide film by spin coating. After coating, a drying treatment is performed to remove N-methyl-2-pyrrolidone and form a coated film of liquid crysta...
Embodiment 1
[0071] On the cholesteric liquid crystal surface of the cholesteric alignment film obtained in Reference Example 1, 5.0% by weight of benzophenone-based ultraviolet rays, which were used as an adhesive to form a protective layer, were used as a protective layer by the bar coating method. Ultraviolet curable adhesive of absorber CyasorbUV-24 (manufactured by Cytec Co., Ltd.) [Aronix UV-3630 (trade name) manufactured by Toagosei Co., Ltd. was replaced by M-150 (trade name) manufactured by the same company and M-315 (trade name) is diluted, and the viscosity is adjusted to 300mPa·s] and applied according to the thickness of 5μm.
[0072] Next, using a desktop laminator, the easily-adhesive-treated surface of Teijin DuPont's easily-adhesive-treated PET G2P 8-25 μm used as a releasable substrate was bonded together to become the above-mentioned adhesive-coated surface, and ultraviolet rays were irradiated. , to cure the adhesive to form a laminate of releasable substrate / protective...
Embodiment 2
[0080] On the cholesteric liquid crystal surface of the cholesteric alignment film obtained in Reference Example 1, 5.0% by weight of benzophenone-based ultraviolet rays, which were used as an adhesive to form a protective layer, were used as a protective layer by the bar coating method. Ultraviolet curable adhesive of absorber CyasorbUV-24 (manufactured by Cytec Co., Ltd.) [Aronix UV-3630 (trade name) manufactured by Toagosei Co., Ltd. was replaced by M-150 (trade name) manufactured by the same company and M-315 (trade name) is diluted, and the viscosity is adjusted to 300mPa·s] and applied according to the thickness of 5μm.
[0081] Next, using a table-top laminator, the easily-adhesive treated surface of Teijin DuPont's easily-adhesive-treated PET SG 2-38 μm used as a releasable substrate was bonded together to form the above-mentioned adhesive-coated surface, and ultraviolet rays were irradiated. , to cure the adhesive to form a laminate of releasable substrate / protective ...
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