The epoxy resin composition and film for the epoxy resin composition, a prepreg, a fiber-reinforced plastics

The present invention relates to compositions comprising the following components (A), (B), (C) and (D) an epoxy resin composition, and the use of the film composition, a prepreg, a fiber-reinforced plastic. According to the present invention, it is possible to provide even can be completed in a short time at a low temperature curing, and is used by a reinforced plastic as the fiber matrix resin, can be obtained having excellent mechanical properties, in particular having an excellent fracture toughness of the fiber reinforced plastic the epoxy resin composition, a prepreg and a film formed from the epoxy resin composition is further reinforced plastics from this epoxy resin composition and reinforcing fibers for producing fiber obtained. The component (A): an epoxy resin having in the molecule a monomer unit represented by the following formula (1); Component (B): number average molecular weight of 600 or more and 1300 or less, and the molecule does not have the following formula (1 ) difunctional monomer unit represented by epoxy resins; component (C): a triblock copolymer; component (D): a curing agent.