[EN] NAPHTHOPYRANS HAVING A PERFLUOROALKYL SUBSTITUENT IN POSITION 5, PREPARATION AND COMPOSITIONS AND MATRICES CONTAINING THEM<br/>[FR] NAPHTOPYRANES AYANT UN SUBSTITUANT PERFLUOROALKYLE EN POSITION 5, LEUR PREPARATION, ET COMPOSITIONS ET MATRICES LES RENFERMANT
申请人:CORNING SA
公开号:WO2001036424A2
公开(公告)日:2001-05-25
The invention relates to novel compounds of the naphthopyran type which have a perfluoroalkyl group (X) in position 5. These compounds are of formula (I) given below. These compounds (I) possess interesting photochromic properties. The invention also relates to their preparation, their applications as photochromes as well as the compositions and matrices containing them.