发明授权
US4988459A Use of optically active oxirane-2-carboxylic acid esters as dopants in
liquid-crystal mixtures, liquid-crystal mixtures containing same and
novel optically active oxirane-2-carboxylic acid esters
失效
使用光学活性环氧乙烷-2-羧酸酯作为液晶混合物中的掺杂剂，含有它们的液晶混合物和新的光学活性环氧乙烷-2-羧酸酯
- 专利标题： Use of optically active oxirane-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active oxirane-2-carboxylic acid esters
- 专利标题（中）： 使用光学活性环氧乙烷-2-羧酸酯作为液晶混合物中的掺杂剂，含有它们的液晶混合物和新的光学活性环氧乙烷-2-羧酸酯
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申请号： US199101申请日： 1988-05-26
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公开(公告)号： US4988459A公开(公告)日： 1991-01-29
- 发明人: Gunter Scherowsky , Jurgen Gay , Hans-Rolf Dubal , Claus Escher , Wolfgang Hemmerling , Ingrid Muller , Dieter Ohlendorf , Rainer Wingen
- 申请人： Gunter Scherowsky , Jurgen Gay , Hans-Rolf Dubal , Claus Escher , Wolfgang Hemmerling , Ingrid Muller , Dieter Ohlendorf , Rainer Wingen
- 申请人地址： DEX Frankfurt am Main
- 专利权人： Hoechst Aktiengesellschaft
- 当前专利权人： Hoechst Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt am Main
- 优先权： DEX3718174 19870529
- 主分类号： C07D301/30
- IPC分类号： C07D301/30 ; C07D303/48 ; C07D405/06 ; C07D405/12 ; C07D407/12 ; C07D409/12 ; C09K19/58 ; G02F1/139 ; G02F1/361 ; G02F1/37
摘要：
Optically active oxirane-2-carboxylic acid esters with a mesogenic molecular component suitable as dopants in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases with short switching times and in electroclinic phases with large electroclinic coefficients. A further advantage lies in the fact that they induce a helix with a very small pitch so that they are also suitable for helix compensation in LC mixtures.
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