| abstract |
The present invention relates to a hardener for epoxy resins, containing at least one amine A1 of formula (I) and at least one amine A2, which is a polyalkyleneamine or polyethylenimine, the weight ratio of amine A1 to amine A2 ranging between 20/1 and 1/2. The inventive hardener allows the manufacture of cost-effective, low-emission epoxy resin products having good workability, a long pot-life, surprisingly rapid curing properties, in particular even in cold conditions, high strength, high adhesion, a high glass transition temperature and a minimal tendency to yellowing, said products, even when surface-applied and used in cold conditions, achieving surprisingly pleasing surfaces with negligible blushing-induced defects. Epoxy resin products of this type can be advantageously used as a coating, in particular for floors, or as an adhesive. |