Optically active compound, process for producing same and liquid crystal
composition containing same
    5.
    发明授权
    Optically active compound, process for producing same and liquid crystal composition containing same 失效
    光学活性化合物,其制备方法和含有该组合物的液晶组合物

    公开(公告)号:US4798680A

    公开(公告)日:1989-01-17

    申请号:US919376

    申请日:1986-10-16

    IPC分类号: C09K19/06 C09K19/52 C07C31/34

    CPC分类号: C09K19/06

    摘要: An optically active 2-fluoro-1-alkanol compound represented by the formula (Ia): ##STR1## wherein R is an alkyl group having 1-16 carbon atoms, and C* is an asymmetric carbon atom; and an optically active compound derived from the fluoroalkanol and represented by the formula (Ib): ##STR2## wherein R and C* are the same as above, m is 1 or 2, n is 0 or 1, and A is a releasable substituent. Because of the fluorine atom directly attached to an asymmetric carbon atom, these compounds are particularly effective in increasing a spontaneous polarization, improving a electric field responsive characteristic of a liquid crystal composition, and controlling the liquid crystal state.

    摘要翻译: 由式(Ia)表示的光学活性2-氟-1-链烷醇化合物:其中R是具有1-16个碳原子的烷基,C *是不对称碳原子; 和由式(Ib)表示的光学活性化合物:其中R和C *与上述相同,m为1或2,n为0或1,A为 可释放的取代基。 由于氟原子直接连接到不对称碳原子上,这些化合物在增加自发极化,改善液晶组合物的电场响应特性和控制液晶状态方面特别有效。

    Liquid crystal device
    9.
    发明授权
    Liquid crystal device 失效
    液晶装置

    公开(公告)号:US4721367A

    公开(公告)日:1988-01-26

    申请号:US843235

    申请日:1986-03-24

    IPC分类号: C09K19/34 G02F1/13 C07D241/02

    摘要: A liquid crystal compound represented by the formula (I) below or a liquid crystal composition containing the compound is interposed between a pair of base plates. ##STR1## wherein R is an alkyl or alkoxy group having 1-18 carbon atoms; m is 0 or 1; R.sup.1 is an alkyl group having 1 to 18 carbon atoms when m is 0 and is an alkyl or alkoxy group having 1-18 carbon atoms when m is 1. The liquid crystal compound or composition is in a chiral smectic phase formed through a phase transition from a higher temperature phase. At least one of the base plates has a face to which an orientation controlling function is imparted for preferentially orienting the liquid crystal molecules in contact with the face in one direction.

    摘要翻译: 由下式(I)表示的液晶化合物或含有该化合物的液晶组合物插入在一对基板之间。 (I)其中R是具有1-18个碳原子的烷基或烷氧基; m为0或1; 当m为0时,R 1为碳原子数为1〜18的烷基,m为1时,为碳原子数1〜18的烷基或烷氧基。液晶化合物或组合物为相变形成的手性近晶相 从较高的温度阶段。 至少一个基板具有赋予取向控制功能的面,以使液晶分子在一个方向上与面接触而优先取向。