Liquid crystalline ester compounds and mixtures thereof
    4.
    发明授权
    Liquid crystalline ester compounds and mixtures thereof 失效
    液晶酯化合物及其混合物

    公开(公告)号:US4834907A

    公开(公告)日:1989-05-30

    申请号:US4815

    申请日:1987-01-08

    摘要: Novel chiral smectic liquid crystalline ester compounds having a superior stability and exhibiting a high response rate when used in the form of display elements and chiral smectic mixtures containing at least one of these compounds are provided, which compounds are expressed by the formula ##STR1## wherein n is an integer of 2 to 16; l is 0, 1 or 2; m is 1 or 2 under the condition of l+m.gtoreq.2; X represents methylene group --CH.sub.2 -- or single bond when l is zero, methylene group --CH.sub.2 -- or ether linkage --O-- when l=1 or ether linkage --O-- when l=2; and Y represents R, OR, --COR, --OCOR, --OCOOR or --COOR wherein R throughout represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.

    摘要翻译: 提供了具有优异稳定性并以显示元件形式使用并且含有至少一种这些化合物的手性近晶混合物时具有高响应率的新型手性近晶液晶酯化合物,该化合物由下式表示:其中 n为2〜16的整数。 l为0,1或2; 在l + m> / = 2的条件下,m为1或2; 当l = 1时,X表示亚甲基-CH 2 - 或单键,当l = 1时为亚甲基-CH 2 - 或醚键-O-,当l = 2时,表示醚键-O-; 并且Y表示R,OR,-COR,-OCOR,-OCOOR或-COOR,其中R全部表示1至18个碳原子的烷基; 星号*表示光学活性碳原子。