A hardener composition for epoxy resins, comprising reaction products of one or more compounds of (A), (B) and (C) with one or more compounds (E) and optionally one or more compounds (D), wherein compounds (A-E) are defined as:
- (A) compounds containing at least two 1,2-epoxide groups, which are reaction products of:
- (A1) compounds having at least two 1,2-epoxide groups per molecule, selected from the group consisting of the diglycidyl ethers of bisphenol A and bisphenol F and polyoxyalkylene glycol diglycidyl ethers,
- (A2) optionally mono-epoxides, and
- (A3) one or more amines selected from:
- (A31) amines of the formula I ##STR16## in which R.sup.1 is a branched or unbranched aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical having 1 to 30 carbon atoms which is unsubstituted or substituted by hydroxyl, alkoxy or halogen groups,
- R.sup.2 and R.sup.3 independently of one another are each hydrogen or R.sup.1 and, if R.sup.2 and R.sup.3 are hydrogen, R.sup.1 is one of the following substituents ##STR17## in which the radicals R.sup.4 to R.sup.9 independently of one another are each a branched or unbranched aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical having 1 to 30 carbon atoms which is unsubstituted or substituted by hydroxyl, alkoxy or halogen groups, and
- R.sup.1 and R.sup.2 can form a substituted or unsubstituted cycloaliphatic ring having up to 8 carbon atoms, in which case R.sup.3 is then a hydrogen atom, and
- (A 32) amines of the formula II ##STR18## in which R.sup.10 is ##STR19## wherein R.sup.11 and R.sup.12 independently of one another are each hydrogen, a saturated or unsaturated straight-chain, branched or cyclic (optionally substituted with heteroatoms in the ring) alkyl having up to 15 carbon atoms, or together are a cyclic alkylene radical having up to 8 carbon atoms which is unsubstituted or substituted up to three times by alkyl groups having 1 to 3 carbon atoms,
- R.sup.13 is hydrogen or methyl,
- x is an integer from 1 to 100, and
- f is 2 or 3, and
- (A 33) amines of the formula III ##STR20## in which R.sup.14 is an alkylene, cycloalkylene or aralkylene radical which is unsubstituted or substituted by hydroxyl, ether or halogen groups,
- R.sup.15 and R.sup.16 are alkyl or, independently of one another, are a cycloalkyl or aralkyl radical which is unsubstituted or substituted by hydroxyl, ether or halogen groups, wherein radicals R.sup.15 and R.sup.16 are optionally connected, optionally via heteroatoms, with the proviso that at least one of the substituents R.sup.14, R.sup.15 or R.sup.16 in .alpha.- and/or .beta.-position to each nitrogen atom is branched and/or that the nitrogen is attached as a ring atom;
- (B) cyclocarbonates which are reaction products of the compounds (A) and (B1) carbon dioxide;
- (C) cyclocarbonates which are reaction products of
- (C1) compounds having at least two 1,2-epoxide groups per molecule, obtained from
- (C11) compounds having at least two 1,2-epoxide groups per molecule, selected from the group consisting of the diglycidyl ethers of bisphenol A and bisphenol F and polyoxyalkylene glycol diglycidyl ethers
- (C12) optionally with monoepoxides and
- (C13) polyoxyalkyleneamines, and
- (C2) carbon dioxide;
- (D) 1,2-epoxide compounds which are not identical to (A1), (A2), (C11), (C12) and/or are unreacted portions of compounds (A1), (A2), (C11) and (C12) from the preparation of the compounds (A) and (C1);
- and
- (E) polyamines having at least two secondary amino groups wherein the ratio of epoxy groups to that of amine hydrogen atoms is from 1:2 to 1:10, and the ratio of cyclocarbonate groups to amine hydrogen atoms is from 1:3 to 1:10.