申请人:Transitions Optical, Inc.
公开号:US05466398A1
公开(公告)日:1995-11-14
Described are novel reversible photochromic 3H-naphtho[2,1-b]pyran compounds, of the following graphic formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl, R.sub.2 is hydrogen or preferably a carboalkoxy group and R.sub.3 is hydrogen or preferably an alkyl group, provided that either R.sub.1 or R.sub.2 is hydrogen, and B and B' are the aryl groups phenyl or naphthyl, a heterocyclic aromatic group or together form a spiro adamantylene group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(oxazine) type compounds, are also described.
描述了一种新颖的可逆光致变色3H-萘[2,1-b]吡喃化合物,其化学结构如下:##STR1## 其中R.sub.1是氢原子或烷基,R.sub.2是氢原子或更好是羧烷氧基基团,R.sub.3是氢原子或更好是烷基基团,但要求R.sub.1或R.sub.2中至少有一个是氢原子,B和B'是芳基苯基或萘基,杂环芳基或共同形成螺环庚烯基团。还描述了含有或涂有这种化合物的有机基体材料。还描述了包含新型萘吡喃化合物或与互补光致变色化合物(例如螺环氧噻吩型化合物)组合的眼镜镜片或其他塑料透明物品。