Liquid crystal thiol compounds
US5352381A · kind A · utility
2Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/3422
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula (I) where R is C.sub.1-15 alkyl, X is hydrogen, fluorine or chlorine, m and n are independently selected 1 or 0, W is C.sub.1-15 alkyl or alkoxy, CN or halogen, rings A and B Are independently selected from phenyl, laterally fluoro- or chloro- substituted phenyl, transcyclohexyl pyridyl, pyrimidyl or dioxanyl. Preferred embodiments have R=C.sub.3-8 and where W is alkyl or alkoxy then it is also preferable that W=C.sub.3-8. Where m=0, then preferably W=CN and where m=1, then preferably W=alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.