abstract |
(57) [Summary] [Objective] An epoxy resin composition using dicyandiamide as a curing agent, capable of producing a prepreg with good storage stability while maintaining good curability, and curing. An epoxy resin composition in which an accelerator is dissolved and precipitation does not occur. [Structure] (a) Epoxy resin, (b) Curing agent composed of dicyandiamide, (c) Curing accelerator composed of urea compound derivative represented by the following general formula, (d) Solvent dissolving the curing accelerator It is characterized in that Embedded image |