Photochromic annealed naphthopyran systems with special substituents to achieve very fast lightening speeds

摘要

The present invention relates to new photochromic, fused naphthopyran systems according to the following formulas (I) and (II), which are characterized in particular by special substituents, with the aid of which very fast brightening speeds can be achieved - without losses in the darkening depth after excitation , as well as their use in plastics of all kinds.