发明授权
- 专利标题： Liquid crystal compounds
- 专利标题（中）： 液晶化合物
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申请号： US903953申请日： 1992-06-26
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公开(公告)号： US5262086A公开(公告)日： 1993-11-16
- 发明人: Yoshiichi Suzuki , Horiyuki Mogamiya , Ichiro Kawamura
- 申请人： Yoshiichi Suzuki , Horiyuki Mogamiya , Ichiro Kawamura
- 申请人地址： JPX Tokyo
- 专利权人： Showa Shell Sekiyu Kabushiki Kaisha
- 当前专利权人： Showa Shell Sekiyu Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-143472 19890606
- 主分类号： C07C69/773
- IPC分类号： C07C69/773 ; C09K19/02 ; C09K19/20 ; C09K19/12 ; C07C69/76
摘要：
(R)- and (S)-enantiomer composition represented by the formula (I) having sufficient high optical purity for exhibiting optically tristable states in S*(3) phase; ##STR1## wherein Ra means a C.sub.5 -C.sub.14 alkyl group or a C.sub.5 -C.sub.14 alkoxy group, preferably a C.sub.5 -C.sub.14 alkyl group, Rb means a C.sub.4 -C.sub.12 normal alkyl group or a C.sub.4 -C.sub.12 branched alkyl group, X means a ##STR2## group or a ##STR3## group, Z means a fluorine containing alkyl group, preferably a trifluoromethyl group and * shows an optically active carbon.
公开/授权文献
- US5859435A Content measuring apparatus for plant leaf 公开/授权日：1999-01-12
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