Liquid crystal compounds, mixtures and devices
US5037576A · kind A · utility
2Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | May 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds for use in ferroelectric smectic liquid crystal mixtures of general formula (I), where R.sub.1 is alkyl, Y is COO or OOC, m, n and p are 0 or 1 provided m+n is 2 or less and when Y is OOC, p is 0, X is a mesogenic group, especially 4.sup.1 -alkyl- or alkyl-biphenyl or bicyclohexyl. Methods for preparation of these compounds are given, and ferroelectric smectic liquid crystal mixtures containing them are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.