Polyimides for use as high refractive index, thin film materials
US7192999B2 · kind B2 · utility
6Cited by
9References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2004 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Oct 20, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1064
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New compositions for use as high refractive index layers are provided. The compositions comprise a polyimide dispersed or dissolved in a solvent system. The polyimide can be prepared from commercially available dianhydrides and diamines. Preferred polymer include recurring monomers selected from the group consisting ofThe inventive compositions can form strong, thin films and have high refractive indices making them useful in a wide range of optical applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.