Described are photochromic materials of indeno [2′,3′:3,4]naphtho[1,2-b]pyran structure, characterized in that they have a nitrogen or sulfur containing substituent at the 11-position ring atom, are substantially free of spiro-substituents at the 13-position and have been adapted to provide an increase in the sensitivity, visible lambda max or a combination thereof as measured in the Indenonaphthopyran Photochromic Performance Test. Optional substituents can be present at the other positions of the indeno [2′,3′:3,4]naphtho [1,2-b]pyran structure. Also described are naphthols used to produce the photochromic materials and photochromic articles that contain or that have coatings containing at least one of the novel photochromic materials or combinations thereof with other photochromic materials.
本文描述了一种
吲哚并[2′,3′:3,4]
萘[1,2-b]
吡喃结构的光致变色材料,其特征在于它们在11位环原子处具有含氮或
硫的取代基,基本上不含有13位螺旋取代基,并且已经适应了在Indenonaphthopyran光致变色性能测试中测量的灵敏度、可见λmax或两者的增加。该
吲哚并[2′,3′:3,4]
萘[1,2-b]
吡喃结构的其他位置可以存在可选的取代基。本文还描述了用于生产光致变色材料的
萘酚以及包含至少一种新型光致变色材料或与其他光致变色材料的组合的光致变色制品或具有涂层的光致变色制品。