Chiral compounds
US5955000A · kind A · utility
2Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/123
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention describes compounds of formula (I) ##STR1## wherein R is C.sub.1-16 alkyl or alkoxy; X is selected from F and Cl and indicates that one or more of the phenyl rings may be laterally substituted; x is selected from 0-3; A and B are independently selected from CO.sub.2, OCO, .tbd.C and single bond; R.sub.1 and R.sub.2 are independently selected from H and C.sub.1-16 alkyl provided that R.sub.1 and R.sub.2 are different; n is 0 or 1 provided that if n is zero then B is single bond. These compounds may be used as dopants suitable for use in ferroelectric liquid crystal mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.