申请人:He Meng
公开号:US20110129678A1
公开(公告)日:2011-06-02
Described herein are compounds generally comprising an indeno[2′,3′:3,4]naptho[1,2-b]pyran structure. Such compounds may be useful for their photochromic properties, and be used in certain photochromic compositions. Such compositions may further comprise other photochromic compositions and/or materials. Additionally, such compounds and/or compositions may be suitable for preparing certain photochromic articles. Also described herein are methods for preparing certain photochromic compounds, compositions, and articles.