High refractive index thermoplastic polyphosphonates
US7375178B2 · kind B2 · utility
3Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2006 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Sep 12, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.