| 发明名称 |
PYRIDINE DERIVATIVES AND A LIQUID CRYSTAL MEDIUM |
| 摘要 |
The invention relates to pyridine derivatives of formula (I), wherein R<1>, A, Z, r, X, s and R<2> have the meaning given in claim 1, and their use as components for liquid crystal media for electrooptical display elements based on the ECB effect. |
| 申请公布号 |
WO9104249(A1) |
申请公布日期 |
1991.04.04 |
| 申请号 |
WO1990EP01535 |
申请日期 |
1990.09.12 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG |
发明人 |
REIFFENRATH, VOLKER;POETSCH, EIKE;MEYER, VOLKER;PLACH, HERBERT |
| 分类号 |
C07D213/64;C09K19/34 |
主分类号 |
C07D213/64 |
| 代理机构 |
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代理人 |
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