Method of using liquid crystal device comprising dichroic dye and liquid crystal device
US4668050A · kind A · utility
6Cited by
1References
18Claims
0Family size
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Key dates
| Filing date | Oct 10, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Oct 10, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B31/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dichroic dye for use in a liquid crystal comprising at least one compound represented by a formula: ##STR1## The compound includes monoazo, disazo and trisazo compounds. The dye has a high dichroic ratio, a high mole absorptivity and a good compatibility with liquid crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.