| 发明名称 |
Cyano-substituted biphenyl compounds and liquid crystalline dielectrics containing the same |
| 摘要 |
Biphenyl derivatives of the formula: <IMAGE> wherein X is -CO-O- or -O-CO-, R1 and R4 are alkyl of 1 to 10 carbon atoms, and one of R2 and R3 is CN and the other is H, are useful for lowering the dielectric anisotropy of liquid crystalline dielectrics.
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| 申请公布号 |
US4073742(A) |
申请公布日期 |
1978.02.14 |
| 申请号 |
US19770781276 |
申请日期 |
1977.03.25 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG |
发明人 |
ERDMANN, DIETRICH;EIDENSCHINK, RUDOLF;KRAUSE, JOACHIM;POHL, LUDWIG |
| 分类号 |
C07C67/00;C07C253/00;C07C255/53;C07C255/55;C07C255/57;C07C327/20;C09K19/00;C09K19/20;C09K19/28;C09K19/46;(IPC1-7):C09K3/34;G02F1/13;C07C121/60;C07C121/64 |
主分类号 |
C07C67/00 |
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