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    • 5. 发明专利
    • Liquid crystal substance and liquid crystal composition
    • 液晶物质和液晶组合物
    • JPS59118744A
    • 1984-07-09
    • JP23456182
    • 1982-12-25
    • Chisso CorpHitachi Ltd
    • INUKAI TAKASHIFURUKAWA KENJITERAJIMA KENJISAITOU SHINICHIISOGAI MASATOHATSUTORI SHINTAROUIWASAKI KISHIROUKITAMURA TERUOKOUBI AKIO
    • C07C69/94C09K19/12C09K19/46G02F1/13G09F9/00
    • NEW MATERIAL:The compound of formula (R is alkyl; R* is optically active group having asymmetric carbon atom).
      EXAMPLE: 4-Octyloxy-4-biphenylcarboxylic acid 2-methylbutyl ester.
      USE: A ferroelectric liquid crystal component having photochemical and chemical stability. When mixed with other liquid crystal compound, the temperature range of the composition exhibiting ferroelectricity can be lowered near to room temperature. The ferroelectric composition can be utilized for a display device taking advantage of the photo-switching phenomenon of ferroelectric liquid crystal, and a high-speed photo-switching having a response time of about 1 m-sec can be attained.
      PROCESS: The compound of formula I can be prepared by converting 4-alkyloxy- 4'-biphenylcarboxylic acid to an acid halide with a halogenation agent such as thionyl chloride, phosphorus pentachloride, etc., and reacting the halide with an optically active alcohol in e.g. pyridine.
      COPYRIGHT: (C)1984,JPO&Japio
    • 新材料:式(R是烷基; R *是具有不对称碳原子的光学活性基团)的化合物。 实施例:4-辛氧基-4-联苯基羧酸2-甲基丁酯。 用途:具有光化学稳定性和化学稳定性的铁电液晶成分。 当与其它液晶化合物混合时,显示铁电性的组合物的温度范围可以接近于室温降低。 利用铁电液晶的光电转换现象,可以将铁电体组合物用于显示装置,并且可以获得响应时间约1m-sec的高速光电转换。 方法:式I化合物可以通过用卤化剂如亚硫酰氯,五氯化磷等将4-烷氧基-4'-联苯羧酸转化为酰卤,并将卤化物与光学活性醇反应制备 例如 吡啶。
    • 9. 发明专利
    • Liquid crystal substance and liquid crystal composition
    • 液晶物质和液晶组合物
    • JPS59128357A
    • 1984-07-24
    • JP64083
    • 1983-01-06
    • Chisso Corp
    • INUKAI TAKASHIFURUKAWA KENJITERAJIMA KANEFUMISAITOU SHINICHI
    • C07C69/773C07C69/92C07C69/94C09K19/20C09K19/42G02F1/13G09F9/00
    • NEW MATERIAL:A compound shown by the formula (m is 1 or 2; X is 4W18C alkoxy when m is 1, and 1W18C alkoxy or alkyl when m is 2; * is optically active carbon).
      EXAMPLE: p-n-Dodecyloxybenzoic acid-p'-(2-methylbutyloxy) phenyl ester.
      USE: A liquid crystal substance. Having an optically active group, showing chiralsmectic A phase and C phase. Having high-speed response properties, improved light switching effect, suitable for graphic display.
      PROCESS: Hydroquinone mono(optically active 2-methylbutyl)ether is treated with a p-alkoxybenzoic acid halide, 4-(p-alkoxyphenyl) benzoic acid halide or 4-(p- alkylphenyl)benzoic acid halide in a basic solvent such as pyridine, etc., to give a compound shown by the formula I .
      COPYRIGHT: (C)1984,JPO&Japio
    • 新材料:当m为1时,式(m为1或2; X为4-18C烷氧基,m为2时为1-18C烷氧基或*为光学活性碳)为一种化合物。 实施例:对 - 正十二烷氧基苯甲酸-p' - (2-甲基丁氧基)苯酯。 用途:液晶物质。 具有光学活性基团,显示出致动脉粥样硬化A期和C期。 具有高速响应特性,改善了光切换效果,适合图形显示。 方法:在碱性溶剂如吡啶中用对烷氧基苯甲酰卤,4-(对烷基苯基)苯甲酰卤或4-(对烷基苯基)苯甲酸卤化物处理氢醌单(光学活性2-甲基丁基)醚 等,得到式I所示的化合物。