| abstract |
(57) [Problem] To provide a curable resin which provides a cured resin having excellent heat resistance and mechanical properties and improved flame retardancy. SOLUTION: The following general formula (1): (Wherein, Ar 1 represents a tetravalent aromatic group, Ar 2 represents a divalent aromatic group, R represents hydrogen or a hydrocarbon group having 1 to 6 carbon atoms, and n represents an average number of repetitions. And a number of 2 to 50). This curable resin is synthesized from a phenol compound having two phenolic OH groups, a diamine compound, formaldehyde, and the like. |