| abstract |
An epoxy resin composition which comprises an epoxy resin and a hardener, wherein the epoxy resin comprises one or more polymer compounds each having at least one structural unit selected from the group consisting of structural units represented by general formula (IA) and structural units represented by general formula (IB), the polymer compounds including a dimer compound having, in the molecule, two structural units represented by general formula (II), the dimer compound accounting for 15-28 mass% of the whole epoxy resin. |