申请人:Chopra Anu
公开号:US20080103301A1
公开(公告)日:2008-05-01
Various photochromic materials are provided that are essentially free of polymerizable unsaturated groups, and comprise: a) an indeno[2′,3′:3,4]naphtho[1,2-b]pyran; and b) an electron-withdrawing, non-conjugating group bonded at the 11-position of the indeno[2′,3′:3,4]naphtho[1,2-b]pyran. Alternative embodiments include various substituents at other positions of the indeno[2′,3′:3,4]naphtho[1,2-b]pyran. Also provided are photochromic articles including a substrate and one of the above photochromic materials, in contact with at least a portion of the substrate.
提供了各种基本不含聚合不饱和基团的光致变色材料,包括:a) 一种吲哚并[2′,3′:3,4]萘并[1,2-b]吡喃;和b) 与吲哚并[2′,3′:3,4]萘并[1,2-b]吡喃的11位结合的电子吸引、非共轭基团。替代实施例包括吲哚并[2′,3′:3,4]萘并[1,2-b]吡喃的其他位置的各种取代基。还提供了包括基板和上述光致变色材料之一的光致变色物品,与基板的至少一部分接触。