Polymerizable polyalkoxylated naphthopyrans
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United States of America Patent
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Sep 5, 2000
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app pub date -
Nov 10, 1999
filing date -
Sep 11, 1998
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Abstract
Described are novel photochromic polymerizable polyalkoxylated naphthopyran compounds, examples of which are certain 2H-naphtho[1,2-b]pyrans, 3H-naphtho[2,1-b]pyrans and indeno[2,1-f]naphtho[1,2-b]pyrans each having at least one polyalkoxylated substituent of from 1 to 50 alkoxy units per substituent which is end-capped with a polymerizable group. Specific substituents are also present on the naphtho, indeno and pyrano portions of the compounds. These compounds may be represented by the following graphic formulae: ##STR1## Also described are various substrates, e.g., paper, glass, polymeric organic materials, etc., that contain or that are coated with such compounds. Optically clear articles such as contact lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., certain other naphthopyrans, indenonaphthopyrans, benzopyrans, oxazine-type compounds, etc., are also described.
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- TRANSITIONS OPTICAL, INC.
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chopra, Anu | Monroeville, PA | 40 | 978 |
Gemert, Barry Van | Murrysville, PA | 15 | 738 |
Kumar, Anil | Pittsburgh, PA | 410 | 6311 |
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