High refractive index thermoplastic polyphosphonates
US6288210A · kind A · utility
21Cited by
1References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 12, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2019 |
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.