Abstract
The amine-based hardeners are very important for epoxy resins. Recently, Norbornane diamine (NBDA) attracts many attentions as a new cycloaliphaticdiamine with a norbornane structure in it. Usally, as a hardener, other diamines cannot satisfy both reactivity and weather ability of cured resin simultaneously. And so, suitable diamines are necessary for each purpose. But, NBDA can satisfy these conflict properties simultaneously. For this reason, we can use NBDA in various curing conditions and to get various cured epoxy resin properties.
