Coatings that are based on chemical curing typically undergo a reaction that occurs over time, leading to the formation of a hardened or cross-linked structure. Unlike instantaneous drying, which may be associated with physical drying methods (where solvents quickly evaporate), chemical curing involves the active participation of chemical agents leading to a gradual cure process.
Enhanced durability is a common characteristic of chemically cured coatings, as the cross-linking process provides robust resistance to wear, corrosion, and chemicals. Additionally, many chemical curing systems may actually depend on environmental conditions, including humidity, to facilitate the curing reaction.
Intermittent curing steps also align with chemical curing processes, where multiple stages of curing may be applied to enhance properties or adjust the coating to specific parameters. Thus, the notion of instant drying does not apply to chemical curing, making it the correct choice as a characteristic not typical of these coatings.