| abstract |
The subject of the present invention is a photochromic composition incorporating: - 2- (p-dimethylaminophenyl) -2- (p-methoxyphenyl) -5-methyl-7, 9 dimethoxy - [2H] -naphtho [1, 2-b] pyrane (compound (I)), and 3- (p-methoxyphenyl) -3-phenyl-6-morpholino-3H-naphtho- [2, 1- b] pyran (compound (II)) .It also relates to said compounds (I) and (II) per se, (co) polymer matrices containing them, advantageously as a mixture, as well as finished products made up, in whole or in part, of such matrices and / or containing one and / or the other of said compounds (I) and (II). |