Hardenable composition with high breaking toughness

摘要

The present invention relates to a curable or hardened composition comprising at least one epoxy resin, one open-chain polyamine and one compound of the formula (I) where the moieties R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 respectively and mutually independently are selected from the group comprising hydrogen, methyl, ethyl, propyl, isopropyl and amine, with the proviso that at least one moiety from the group comprising R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 is amine and at least one moiety from the group comprising R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 is amine; to use of a hardener combination comprising an aliphatic diamine and a compound of the formula (I) for the curing of epoxy resin; to a process for the coating of a surface or for the impregnation of a textile sheet, comprising the steps of (a) application and (b) hardening of the curable composition, and also to a surface, fibre composite material, coating or adhesive comprising the hardened composition.