发明授权
- 专利标题: Tetracyclic benzene derivatives and liquid-crystalline media
- 专利标题(中): 四环苯衍生物和液晶介质
-
申请号: US691275申请日: 1991-04-25
-
公开(公告)号: US5122297A公开(公告)日: 1992-06-16
- 发明人: Volker Reiffenrath , Reinhard Hittich , Herbert Plach
- 申请人: Volker Reiffenrath , Reinhard Hittich , Herbert Plach
- 申请人地址: DEX Darmstadt
- 专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人地址: DEX Darmstadt
- 优先权: DEX4013241 19900426
- 主分类号: C07C22/08
- IPC分类号: C07C22/08 ; C07C25/18 ; C09K19/30
摘要:
The invention relates to novel tetracyclic benzene derivatives of the formula I ##STR1## in which n is 1 to 7, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, X is F, Cl, CF.sub.3, --OCF.sub.3 or --OCHF.sub.2, and L, Y and Z are each, independently of one another, H or F.
公开/授权文献
信息查询