The present invention relates to a photochromic spirobenzopyran compound of the formula (1) and its derivatives, a spirobenzopyran group having unsaturated terminal groups, a polymer prepared therefrom, a method for the production thereof, a composition comprising said spirobenzopyran or said spirobenzopyran group-containing polymer and a photochromic switch film using the same:
1
wherein the substituents are defined in the specification. According to the present invention, a polymer which possesses excellent mechanical properties and rapid photochromic switch properties at room temperature and a photochromic thin film for switch elements are produced. They are useful in applications such as photo switches, photochromic filters, light stabilizers, paper money or cards for preventing counterfeit forgeries, display elements, optical recording media or photo integrated elements.
本发明涉及一种式(1)的光致变色螺并
吡喃化合物及其衍
生物、具有不饱和末端基团的螺并
吡喃基团、由其制备的聚合物、其生产方法、包含所述螺并
吡喃或所述含螺并
吡喃基团聚合物的组合物以及使用该组合物的光致变色开关薄膜:
1
其中取代基在说明书中定义。根据本发明,生产出一种在室温下具有优异机械性能和快速光致变色开关性能的聚合物以及一种用于开关元件的光致变色薄膜。它们可用于光开关、光致变色滤光片、
光稳定剂、防止伪造的纸币或卡片、显示元件、光学记录介质或光电集成元件等应用。