A reworkable photothermal dual-curing system was devised using an epoxide and methacrylates with acid anhydride units connected with tertiary ester linkages. The mixture of these compounds was curable by photoirradiation at 365 nm and subsequent heating. The cured sample can be redissolved in methanol after irradiation at 254nm followed by baking above 100 degrees C. The system is useful for the development of high-performance UV-curing materials.