发明授权
- 专利标题： Optically active compound, liquid crystal composition containing the same, and liquid crystal electro-optic element using the same
- 专利标题（中）： 光学活性化合物，含有它们的液晶组合物和使用其的液晶电光元件
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申请号： US91406申请日： 1993-07-14
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公开(公告)号： US6093345A公开(公告)日： 2000-07-25
- 发明人: Shigeru Mitsuhashi , Yoshimasa Matsushima , Takashi Imai , Kiichi Mori , Mamoru Yamada , Hiroshi Sugiyama , Misao Yagi , Hitoshi Kondo , Toshimitsu Hagiwara
- 申请人： Shigeru Mitsuhashi , Yoshimasa Matsushima , Takashi Imai , Kiichi Mori , Mamoru Yamada , Hiroshi Sugiyama , Misao Yagi , Hitoshi Kondo , Toshimitsu Hagiwara
- 申请人地址： JPX Tokyo
- 专利权人： Takasago International Corporation
- 当前专利权人： Takasago International Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-279079 19901019
- 主分类号： G02F1/13
- IPC分类号： G02F1/13 ; C07D239/26 ; C07D239/34 ; C09K19/34 ; C09K19/42 ; C09K19/46 ; C07C41/00 ; C07D239/02 ; G02F1/133
摘要：
An optically active compound represented by formula (I): wherein A represents ##STR1## wherein R.sup.2 represents an alkyl group having from 8 to 12 carbon atoms; R.sup.1 represents a straight chain alkyl group having from 2 to 5 carbon atoms; X represents a fluorine atom or a methyl group; n represents 1 or 2; m represents an integer of from 0 to 3; and C* represents an asymmetric carbon atom, and a liquid crystal composition containing the same are disclosed. The compound exhibits large spontaneous polarization and low viscosity and, when added to an achiral base liquid crystal composition, induces a chiral nematic phase in which the helical pitch has small temperature dependence.
公开/授权文献
- USD416567S Cutting blade 公开/授权日：1999-11-16