Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Unmodified epoxy resin (Epoxy value 0.5-0.55)
A
Polyurethane prepolymer (Desmocap 12 A, Covestro)
B
Amine hardener (Laromine C260, BASF Corporation)
Resulting Properties
Epoxy urethane adhesives provide properties when cured that are similar to epoxy-nylons except they provide a major improvement in moisture resistance. Isocyanate monomers and prepolymers will react with the hydroxyl groups on epoxy resins to give tough, flexible hybrids. These adhesives have been noted for their excellent adhesion to many high-energy plastic substrates and for their propensity to bond to oily metal substrates.