| abstract |
An epoxy resin composition comprising a phenol novolac resin (more specifically, a phenol-naphthol novolak resin) and an epoxy resin, wherein the cured product obtained is remarkably improved in heat resistance and flammability, and an epoxy resin composition suitable for the epoxy resin composition To provide a phenolic novolak resin which can be used as a binder. A phenolic novolac resin comprising a chemical structure represented by the following general formula (1). [Chemical Formula 1] (Wherein A independently represents a monovalent or divalent unit of the following formula (2), or a monovalent or divalent unit of the formula (3), n is an integer of 0 to 20, and R1 is Each independently represent an alkyl group having 1 to 8 carbon atoms, and p and q are each independently an integer of 0 to 2.) |