申请人:Takenaka Junji
公开号:US20140054520A1
公开(公告)日:2014-02-27
A novel photochromic compound which develops a color of a neutral tint and has high color optical density, high fading speed and excellent durability.
The present invention is a chromene compound having an indeno(2,1-f)naphtho(1,2-b)pyran structure as the basic skeleton in which a hetero ring having two hetero atoms including at least one sulfur atom is directly bonded to the 6-position and the 7-position of the indeno(2,1-f)naphtho(1,2-b)pyran structure via the hetero atom like the compound represented by the following formula (18).
一种新型的光致变色化合物,可呈现出中性色调的颜色,具有高色彩光密度、高褪色速度和极好的耐久性。本发明是一种含有吲哚并[2,1-f]萘并[1,2-b]吡喃结构作为基本骨架的咔喃化合物,其中一个含有至少一个硫原子的杂环直接连接到吲哚并[2,1-f]萘并[1,2-b]吡喃结构的6位和7位上,就像以下式子(18)所表示的化合物。