Chiral liquid crystal compounds
US5486309A · kind A · utility
6Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Sep 22, 1993 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Sep 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3068
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Optically active compounds of formula (I), where X has a structure (II) and B is C.sub.1-12 alkyl, a chiral group or a group having a general structure (III), where R and R' are H, C.sub.1-12 alkyl, alkoxy, alkylcarbonyloxy, or alkoxycarbonyl, each ring (IV) and (V) is the same or different, A and D are single bonds or bridging groups, each a and d is 0 or 1; Z, Z' are CN, Cl, F, Br or CF.sub.3 ; provided when Z is CN or Cl, then when B is alkyl X-Y is not (VI) or (VII). Ferroelectric smectic liquid crystal mixtures containing these compounds are also described. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.