| 摘要 |
PCT No. PCT/JP95/02474 Sec. 371 Date Dec. 10, 1996 Sec. 102(e) Date Dec. 10, 1996 PCT Filed Dec. 4, 1995 PCT Pub. No. WO96/17006 PCT Pub. Date Jun. 6, 1996A prepreg comprising (a) reinforcing fibers and (b) a matrix resin which comprises specific epoxy resin composition, a curing agent with a specific structure and a highly heat resistant thermoplastic resin, the cured product of which has a low water absorption. An interlayer toughened prepreg containing reinforcing fibers and a matrix resin comprising a specific epoxy resin composition, a hardening agent with a specific structure and a highly heat resistant thermoplastic resin is also provided. In addition, a cured product can be obtained by curing any of the above prepregs, which product satisfies both impact resistance (residual compressive strength after impact) and heat and wet property (compressive strength of notched coupon at high temperature and high humidity) at high levels, even though these properties have been in contradictory relation in the conventional techniques.
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