发明授权
- 专利标题： Liquid-crystalline compounds, and liquid-crystalline medium
- 专利标题（中）： 液晶化合物和液晶介质
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申请号： US407940申请日： 1999-09-25
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公开(公告)号： US6146719A公开(公告)日： 2000-11-14
- 发明人: Eike Poetsch , Brigitte Schuler , Michael Heckmeier , Volker Reiffenrath , Werner Binder , Joachim Krause
- 申请人： Eike Poetsch , Brigitte Schuler , Michael Heckmeier , Volker Reiffenrath , Werner Binder , Joachim Krause
- 申请人地址： DEX
- 专利权人： Merck Patent Gesellschatf mit beschrankter Haftung
- 当前专利权人： Merck Patent Gesellschatf mit beschrankter Haftung
- 当前专利权人地址： DEX
- 优先权： DEX19844498 19980929
- 主分类号： C09K19/30
- IPC分类号： C09K19/30 ; C09K19/32 ; C09K19/42 ; C09K19/46 ; G02F1/13 ; C09K19/34 ; C09K19/52
摘要：
A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, including one or more compounds of the general formula I: ##STR1## in which, R is H, an alkyl or alkenyl radical having 1 or 2 to 15 carbon atoms respectively which is unsubstituted, monosubstituted by CN or .sub.CF. or at least monosubstituted by halogen, where one or more CH.sub.2 groups in these radicals may also, in each case independently of one another, be replaced by --O--, --S--, ##STR2## --CO--, --CO--O--, --O--CO--, or --O--CO--O-- in such a way that O atoms are not linked directly to one another,m is 0 or 1,n is 0, 1 or 2, andm+n is 1, 2 or 3.
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