Mipa Aktivprimer is an acid-curing, chromate-free 2K primer designed especially for aluminium substrates providing active corrosion protection and excellent adhesion on iron, steel and galvanized substrates. Mipa Aktivprimer can be overcoated with all Mipa 1K and 2K systems (except for epoxy coating systems and waterborne basecoats). It can also be used in a three-layer-application (Aktivprimer/ filler/ topcoat)