Coating Terms

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Process of transformation of an organic coating film to a rigid film of thermosetting character as a result of polymerization reactions.
Resins with isocyanate functionality react with moisture in the air to form polyurea. The coatings produced form these resins are called “moisture curing coatings”. Epoxy-ketimine based 2K coatings are also called moisture curing coatings because amine produced from the reaction  of ketimine with water, forms a cross-linked network.
Despite the fact that, polyurea is formed from the reaction of isocyanate with moisture in the air, coatings composed of polyurea is commonly misnamed as “moisture curing polyurethane coatings”.