Novel alkylsubstituted N-benzylideneanilines and liquid crystal compositions containing same
US4173544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1976 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Dec 15, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel alkylsubstituted N-benzylideneanilines of formula ##STR1## in which n and m each represent zero or integers of from 1 to 8 and wherein the sum of n plus m is at least 6; the novel formula (I) compounds are suitable for use as dielectric component of electro-optic LC-display devices. Liquid crystal compositions containing the novel compounds for use as dielectric phase in nematic or smectic electro-optic LC-display devices and an improved method for producing 4-alkylsubstituted and 4,4'-dialkylsubstituted N-benzylideneanilines including the novel formula (I) compounds by condensation of the corresponding aldehydes and anilines in bulk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.