Homoazaadamantane spirooxazines and their use in the field of ophthalmic optics
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United States of America Patent
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Oct 24, 2000
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N/A
app pub date -
Jan 29, 1999
filing date -
Jul 31, 1996
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Expired
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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.
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