High refractive index thermoplastic polyphosphonates
US7067083B2 · kind B2 · utility
2Cited by
7References
1Claims
0Family size
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Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Apr 27, 2025 |
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.