主权项 |
1. A curing agent, which is suitable for curing epoxy resins and comprises at least one amine with the formula (I), where A is the group of a polyethyleneimine having a relative molar mass in the range of 300 to 5000 g/mol, following the removal of a primary aliphatic amino groups; R is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; a denotes an integer from 1 to 50; and X is a hydrocarbon group having 1 to 20 carbon atoms, which may optionally include hydroxyl groups, mercapto groups, ether groups, ester groups, pyridino groups or amino groups. |