The multi-functional epoxy resin composition, the curable epoxy resin composition and curing

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PROBLEM TO BE SOLVED : To provide a polyfunctional epoxy resin composition excellent in flowability and heat resistance.SOLUTION : A polyfunctional epoxy resin composition is represented by following formula (1). For the composition, an epoxy equivalent is 100-400 g/equivalent, a ratio of n=1 is 0.1-5 wt.%, a ratio of n=2 is 40-80 wt.%, and a ratio of n=3 is 1-30 wt.%. (Rand Rare a hydrogen atom, and an alkyl group or a glycidyl ether group having 1-4 carbon atoms, n is 1-5, and A is a hydrogen atom or a group represented by the above formula (2)).