EPOXY RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain an epoxy resin composition for producing a prepreg capable of reducing the occurrence of a halo without increasing that of resin smear. SOLUTION: This epoxy resin composition comprises (A) an epoxy resin containing two or more epoxy groups in one molecule, (B) a curing agent and (C) a curing promoter and contains 1-25 pts.wt. of a synthetic resin to be made into a disperse substance having <=1μm average size in a cured material based on 100 pts.wt. of the total of the components A, B and C when the epoxy resin composition is cured. A phenol novolak resin is contained as the curing agent and the synthetic resin is preferably an acrylonitrile/styrene copolymer resin or an acrylic acid ester polymer resin.