3,4-dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride and liquid crystal aligning agent comprising polyimide resin prepared from the dianhydride
US7901745B2 · kind B2 · utility
6Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2009 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Aug 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/027
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3,4-Dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride is provided. The tetracarboxylic dianhydride is represented by Formula 1, which is described in the specification. Further provided is a liquid crystal aligning agent comprising a polyimide prepared using the tetracarboxylic dianhydride and a solvent. Further provided is a liquid crystal alignment layer formed using the liquid crystal aligning agent. The liquid crystal alignment layer exhibits excellent electro-optical properties and good processability in terms of printability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.