申请人:THE PLESSEY COMPANY plc
公开号:EP0140540A2
公开(公告)日:1985-05-08
A series of photochromic compounds are disclosed which have the property of undergoing a reversible colour change when exposed to unfiltered sunlight and reverting to their original colour in the absence of U.V. light at room temperature. These compounds have the general formula:-
represents an adamantylidene or a substituted adamantylidene group;
R, represents hydrogen, alkyl, aryl, aralkyl or a heterocyclic group,
X represents oxygen or > NR2, in which R2 is hydrogen, aryl, alkyl or aralkyl and
represents an aromatic group, an unsaturated heterocyclic group or a benzannelated heterocyclic group.
The photochromic compounds of the invention are useful in the manufacture of photoreactive lenses, particularly plastic lenses.
本研究公开了一系列光致变色化合物,这些化合物具有这样的特性:当暴露在未经过滤的阳光下时,颜色会发生可逆的变化;而在室温下,当没有紫外光照射时,颜色又会恢复到原来的颜色。这些化合物的通式如下
代表金刚烷亚基或取代的金刚烷亚基;
R 代表氢、烷基、芳基、芳烷基或杂环基团、
X 代表氧或 > NR2,其中 R2 是氢、芳基、烷基或芳烷基,且
代表芳香基团、不饱和杂环基团或苯并杂环基团。
本发明的光致变色化合物可用于制造光敏镜片,特别是塑料镜片。