Cyclized in the C5-C6 and two cyclic groups as well as compositions containing them and phenanthropyrans and column naphthopyran, (co) polymer matrix

摘要

(57) [summary] The present invention relates to phenanthropyrans orchid type compounds and naphthopyran of new with the two ring carbon atoms which is cyclized in the 5,6 position. These compounds have the formula (I). These compounds (I) have interesting photochromic properties. Their preparation, their application as photo-chrome, as well as compositions containing them and also relates to (co) polymer matrix also present invention.