Liquid crystals with improved properties and devices using such liquid crystals
US4147655A · kind A · utility
11Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Jan 9, 1978 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Jan 9, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/2014
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel mesomorphic substances, constituting, in certain temperature ranges, nematic or smectic liquid crystals, are compounds of the formula ##STR1## wherein Y is H or CN; PA1 R is alkyl or alkoxy of 1 to 10 carbon atoms; PA1 R' is alkyl of 1 to 10 carbon atoms or ##STR2## and X is Br, Cl or CN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.