A two-compartment coating refers to cross-linking resin systems that must be stored in separate containers prior to use because they are highly reactive with one another. The resulting product from such a reaction is an epoxy compound that is applied to a metal's surface as a protective film.
Two-compartment coatings are applied with a spray gun that has container fittings for two separate feed lines. An example of a resin pair that is typically applied using a two-compartment spray gun is a polyester gel-coating.
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