Novel water-borne amine hardeners for ambient curing epoxy coatings

Conclusions  Two new amine adduct hardeners with the following features are introduced:

–	▀ no VOC, no acetic acid
–	▀ both work very well in liquid resin as well as in solid epoxy emulsion formulations
–	▀ excellent compatibility with epoxy resins, no induction time needed
–	▀ light-coloured coatings for decorative applications are possible
–	▀ fast and slow version, reactivity can be adjusted by appropriate mixing
–	▀ identical active hydrogen equivalent weight (exchangeable in formulations)
–	▀ the slow version gives long pot life and still acceptable drying time, especially with liquid resins.
–	▀ the hardeners can be force-dried at elevated temperatures.
–	▀ excellent performance in anticorrosion primers (highly reactive hardener)

Additional work on the two hardeners regarding corrosion protection and start-up formulations for various applications are currently being carried out.