The present invention provides a curable composition excellent in curability and capable of forming, through light irradiation, a cured product excellent in light resistance, heat resistance, and transparency. The curable composition contains the following component (A), the following component (B), and the following component (C):
the component (A): an alicyclic epoxy compound represented by the following formula (a):
the component (B): a light resistance imparting agent having a maximum absorption wavelength in a region between 280 and 320 nm in an ultraviolet-visible light absorption spectrum from 250 to 400 nm; and
the component (C): an optical cationic polymerization initiator:
wherein R1 to R18 are the same as or different from one another and represent a hydrogen atom, a halogen atom, a hydrocarbon group that may contain an oxygen atom or a halogen atom, or an alkoxy group that may have a substituent; and X represents a single bond or a linking group.
本发明提供了一种固化性极佳的可固化组合物,通过光照射可形成耐光性、耐热性和透明性极佳的固化产品。该固化组合物包含以下成分(A)、以下成分(B)和以下成分(C):
组分(A):由下式(a)表示的脂环族环氧化合物:
组分(B):一种耐光性赋予剂,其最大吸收波长在紫外-可见光吸收光谱 250 至 400 纳米的 280 至 320 纳米之间的区域;以及
组分(C):一种光学阳离子聚合
引发剂:
其中 R1 至 R18 彼此相同或不同,代表氢原子、卤素原子、可能含有氧原子或卤素原子的烃基或可能具有取代基的烷氧基;X 代表单键或连接基团。