| abstract |
A photochromic compound is described which has a spirooxazine skeleton in a manner known per se.n n n According to the invention, conjugated diazole-naphthoxazine or oxazole, thiazole, benzooxazole or benzothiazole systems are attached to the basic structure.n n n This results in an improved absorption in the wavelength range> 350nm and improved migration properties. |