Lyotropic liquid crystal systems based on aromatic tetracarboxylic bisbenzoimidazole derivatives and methods for making
US8674103B2 · kind B2 · utility
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37Claims
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Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds derived from aromatic tetracarboxyl bisbenzoimidazoles are disclosed. These compounds are capable of forming liquid crystal systems that can produce optically isotropic or anisotropic films with desirable optical properties. Formulae (I) or (II), or a salt thereof; wherein y is an integer in the range from 0 to about 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.