Laterally fluorinated 4-cyanophenyl and 4'-cyanobiphenyl benzoates
US5156763A · kind A · utility
8Cited by
17References
8Claims
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Key dates
| Filing date | Aug 30, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Aug 30, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/2007
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Laterally fluorinated 4-cyanophenyl and 4'-cyanobiphenyl benzoates are diosed of general formula I: ##STR1## in which R is R.sup.1 or R.sup.1 O, wherein R.sup.1 is C.sub.1 -C.sub.12 alkyl, m and n are 0 or 1 provided that (n+m) is 0 or 1, each of a, b, c and d are independently 0 or 1, provided (a+b+c+d) is not zero, but excluding the case where a and b are 0 and one of c and d is 0, being useful constituents of nematic liquid crystal materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.