Optically active compound, process for producing same and liquid crystal
composition containing same
    8.
    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。

    Fluoroalkane derivative
    9.
    发明授权
    Fluoroalkane derivative 失效
    氟烷烃衍生物

    公开(公告)号:US4867903A

    公开(公告)日:1989-09-19

    申请号:US22928

    申请日:1987-03-06

    摘要: A fluoroalkane derivative represented by the formula: ##STR1## wherein R denotes an alkyl group having 1-16 carbon atoms, C* denotes an asymmetric carbon atom, R.sup.1 denotes an alkyl or alkoxy group having 1-16 carbon atoms; ##STR2## respectively denote a phenylene group ##STR3## a cyclohexylene group ##STR4## or a pyrimidinylene group ##STR5## p is 0 or 1, q is 0 or 1 when p is 1, r is 0 or 1; and l, m and n are respectively 0 or a positive integer satisfying the relationship of l+m+n.gtoreq.1. The fluoroalkane derivative has a fluorine atom providing a large dipole moment and directly connected to an asymmetric carbon atom, so that it provides a high speed responsive characteristic through an increased spontaneous polarization when contained in a liquid crystal composition, especially a ferroelectric liquid crystal composition.

    摘要翻译: 由下式表示的氟烷烃衍生物:其中R表示具有1-16个碳原子的烷基,C *表示不对称碳原子,R1表示具有1-16个碳原子的烷基或烷氧基; 分别表示亚苯基“亚甲基”或“嘧啶基”,p为0或1,当p为1时,q为0或1,r为0或1; l,m和n分别为0或满足l + m + n> / = 1的关系的正整数。 氟烷烃衍生物具有提供大的偶极矩并直接连接到不对称碳原子的氟原子,从而当包含在液晶组合物,特别是铁电液晶组合物中时,通过增加的自发极化提供高速响应特性。

    Optically active compound, process for producing same and liquid crystal
composition containing same
    10.
    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:US4873018A

    公开(公告)日:1989-10-10

    申请号:US112936

    申请日:1987-10-27

    IPC分类号: C09K19/06

    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 substitutent. 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 可释放的替代品。 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。