1103L Modified Cardonal Phenalkamine epoxy hardener/curing agent Mannich base for epoxy anticorrosion coatings Epoxy hardener 1103L is mannich curing agent used to protect epoxy coating systems for gold and concrete substrates. This product has excellent rapid curing characteristics, even at low temperatures. Good chemical resistance and good adhesion on wet or untreated substrates. This product has excellent waterproof and anti-corrosion properties, especially suitable for