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in c5 - c6 with a ring of indene or dihydronaphtalin type anellierte naphtopyrane and those containing compositions and matrices
in c5 - c6 with a ring of indene or dihydronaphtalin type anellierte naphtopyrane and those containing compositions and matrices
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机译:在c5-c6中带有茚或二氢萘酞菁型苯丙醚环吡喃的环以及含有组合物和基质的环
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摘要
The present invention relates to novel naphthopyran-type compounds, annelated in position C5-C6 by an indene- or dihydronaphthalene-type carbocycle, which are of the formulae (I) and (II) given below:These compounds (I) and (II) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.
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