Photochromic compound
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United States of America Patent
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Nov 24, 1992
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N/A
app pub date -
Aug 7, 1991
filing date -
Feb 2, 1987
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Abstract
A novel photochromic compound and a polymer comprising the photochromic compound are disclosed. The novel photochromic compound of the present invention is a spirooxazine compound having an addition polymerizable organic functional group or a ring-opening polymerizable organic functional group therein.
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