Polymerized compound, polymerized liquid crystal composition containing it, and process for preparing anisotropic optical part from said liquid crystal composition
An optical anisotropy, compound technology, applied in organic chemistry, liquid crystal materials, chemical instruments and methods, etc., can solve problems such as poor productivity, and achieve the effects of easy handling, manufacturing transparency, and suppressing the increase in haze.
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Embodiment 1
[0068] (Example 1) Synthesis of polymerizable compound (1)
[0069] A mixture consisting of 138.1 g of 4-hydroxybenzoic acid, 136.1 g of 6-chloro-1-hexanol, 84.0 g of sodium hydroxide, 25.0 g of potassium iodide, 440 ml of ethanol, and 440 ml of water was stirred while heating at 80° C. for 32 hours. After the obtained reaction solution was cooled to room temperature, 1000 ml of saturated brine was added to the reaction solution, and diluted hydrochloric acid was added until the water layer of the reaction solution became weakly acidic. 1000 ml of ethyl acetate was added to the reaction solution for extraction. After washing the organic layer with water, the organic solvent was distilled off under reduced pressure, and then air-dried to obtain 223.9 g of the compound of formula (S-1).
[0070]
[0071] Heat and stir a mixture consisting of 110.0g of compound of formula (S-1), 133.1g of acrylic acid, 27.0g of p-toluenesulfonic acid, 6.0g of hydroquinone, 420ml of toluene, 180ml o...
Embodiment 2
[0076] (Example 2) Synthesis of polymerizable compound (2)
[0077] Stirring a mixture consisting of 91.3 g of methyl 4-hydroxybenzoate, 68.1 g of 3-chloro-1-propanol, 99.0 g of potassium carbonate, and 360 ml of dimethylformamide, while heating and refluxing at 80° C. for 16 hours. After the obtained reaction liquid was cooled to room temperature, 800 ml of saturated brine was added to the reaction liquid, and diluted hydrochloric acid was added until the water layer of the reaction liquid became weakly acidic. 1000 ml of tetrahydrofuran was added to the reaction solution to perform extraction. The organic solvent was distilled off under reduced pressure to obtain 133.1 g of a crude product of formula (S-4).
[0078]
[0079] A mixture consisting of 133.1 g of the crude product of formula (S-4), 50.0 g of sodium hydroxide, 100 ml of methanol, and 100 ml of water was stirred while heating and refluxing for 4 hours. After the reaction solution was cooled to room temperature, hydr...
Embodiment 3
[0086] (Example 3) Preparation of polymerizable liquid crystal composition (1)
[0087] A composition (A) consisting of 50 parts by mass of the polymerizable liquid crystal compound of compound (a-1) and 50 parts by mass of the polymerizable liquid crystal compound of compound (a-4) was prepared.
[0088]
[0089] The composition (A) exhibits a nematic liquid crystal phase at room temperature (25°C). The nematic-isotropic liquid phase transition temperature is 46°C. In addition, n measured at 589nm e (Refractive index of extraordinary light) is 1.662, n o (The refractive index of ordinary light) is 1.510, and the birefringence is 0.152.
[0090] A composition (B) consisting of 30 parts by mass of the polymerizable liquid crystal compound (S-7) synthesized in Example 2 and 70 parts by mass of the composition (A) was prepared. The composition (B) showed a nematic phase at room temperature, and the nematic-isotropic liquid phase transition temperature was 56°C. In addition, no crys...
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