| 摘要 |
PROBLEM TO BE SOLVED: To obtain an epoxy resin composition for a fiber-reinforced composite material of which cured material becomes a matrix resin excellent in adhesion with reinforcing fibers, a prepreg obtained by using the above composition and a fiber-reinforced composite material obtained by using the prepreg, excellent in various physical characteristics. SOLUTION: This epoxy resin composition contains (A) an epoxy resin, (B) a curing agent containing plural active hydrogens in its molecule and (C) a compound having one functional group capable of reacting with the (B) the curing agent having active hydrogens in its molecule to form a coordinate bond and a partial structure shown by any of the below-cited general formulae I to IV and 0.5-0.98 remaining ratio R (the remaining ratio R is defined as the remaining ratio of the constituting element C obtained by dissolving the constituting element C and morpholine in dimethylsulfoxide so as to become 1.0 mo/l each and reacting at 70 deg.C for 4 hr.). Formula I: -CO-N<, Formula II: -CS-N<, Formula III: -SO2-N<, and Formula IV: >PO-N<.
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