Naphthopyrans having a perfluoroalkyl substituent in position 5, preparation and compositions and matrices containing them
作者： Olivier Breyne , You Ping Chan , Patrick Jean
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摘要: The invention relates to novel compounds of the naphthopyran type which have a perfluoroalkyl group (X) in position 5. These are formula (I) given below. possess interesting photochromic properties. also their preparation, applications as photochromes well compositions and matrices containing them.
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