Homoazaadamantane spirooxazines and their use in the field of ophthalmic optics
US6136968A · kind A · utility
41Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D498/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Described are novel reversible photochromic compounds of the homoazaadamantane spirooxazine family. Certain substituents are present on the nitrogen atom of the homoazaadamantane portion of the compound and on the benzene ring fused to the oxazine portion of the compound. These compounds may be represented by the following formula: Also described are compositions, e.g., solvent based mediums and polymerized organic materials, used to produce ophthalmic components, that contain the homoazaadamantane compounds with or without other photochromic compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.