| abstract |
PROBLEM TO BE SOLVED: To include a triazine ring-containing polymer that can achieve high heat resistance, high transparency, high refractive index, high solubility, and low volume shrinkage without adding a metal oxide, and an initiator is added. To provide a photocurable film-forming composition that can be cured at least. For example, a composition comprising a polymer containing a repeating unit structure having a triazine ring as represented by the following formula (17), and a polyfunctional epoxy compound or polyfunctional (meth) acrylic compound as a crosslinking agent. The product can be photocured without adding an initiator to give a cured film having a high refractive index and a high heat resistance. [Selection figure] None |