- A 1- alkoxyl fluorinegeneration of benzene apperception composition preparation method
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The invention relates to a preparation method for a 1-(alkoxy)fluorobenzene compound. The method includes the steps of making fluorophenol and inorganic bases react to generate base metal salt of fluorophenol; secondly, dropwise adding haloalkane to generate 1-(alkoxy)fluorobenzene and salt. The method is simple in process and convenient to operate, the obtained product is high in purity, yield is high, the environment pollution is small, and the method is suitable for large-scale industrial production.
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Paragraph 0039-0041
(2017/03/17)
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- TRICYCLIC LIQUID CRYSTALLINE COMPOUND HAVING LATERAL FLUORINE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
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The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a large optical anisotropy and a suitable elastic constant K33 (K33: bend elastic constant), and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and provides a liquid crystal composition having a small viscosity, a large optical anisotropy, a suitable elastic constant K33, a suitable and negative dielectric anisotropy, and further having a low threshold voltage, a high maximum temperature of a nematic phase and a low minimum temperature of the nematic phase. In a specific structure having phenylene in which hydrogen on the benzene ring is replaced by fluorine, a three-ring liquid crystal compound having fluorine at a lateral position, and a liquid crystal composition containing the compound are prepared.
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Page/Page column 43
(2011/01/12)
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