The present invention relates to photochromic materials that include one or more indeno-fused naphthopyrans that have particular groups at the 7, 11, and 13 positions thereof, and at the position alpha to the oxygen of the pyran ring thereof. With some embodiments, hydrogen or an alkoxy group is bonded to the 7 position, an optionally substituted phenyl is bonded to the 11 position, two alkyl groups are bonded to the 13 position, and two optionally substituted phenyl groups are bonded to the position alpha to the oxygen of the pyran ring of the indeno-fused naphthopyran compound. The 13 position of the indeno-fused naphthopyrans is free of ether groups in which an ether oxygen is bonded to the 13 position, and hydroxyl. The present invention also relates to photochromic articles and compositions that include such indeno-fused naphthopyrans.
本发明涉及包括一个或多个在其7、11和13位置具有特定基团以及在其
吡喃环氧位的α位置的
吲哚并螺环
吡喃的光致变色材料。在某些实施例中,氢或烷氧基与7位结合,可选择性取代的苯基与11位结合,两个烷基与13位结合,并且两个可选择性取代的苯基与
吲哚并螺环
吡喃化合物的
吡喃环氧位的α位置结合。
吲哚并螺环
吡喃的13位不含醚基,其中醚氧原子与13位结合,也不含羟基。本发明还涉及包括这种
吲哚并螺环
吡喃的光致变色文章和组合物。