Dichroic azo dyes
US5589100A · kind A · utility
59Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1996 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Mar 20, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/601
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Arylazo and poly(arylazo) dyes having at least one core radical selected from naphthyl or anthracyl and having at least one 2,3-dihydro-1,3-dialkyl perimidine substituent, a guest-host composition comprising a liquid crystal host solvent and the arylazo or poly(arylazo) dichroic dye, and a liquid crystal display comprising the guest-host composition, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.