What type of coatings includes epoxies, urethanes, and silicones that chemically crosslink?

Coatings that include epoxies, urethanes, and silicones are categorized as crosslinking coatings because these materials undergo a chemical reaction that links them together at the molecular level during the curing process. This crosslinking not only enhances the strength and durability of the coating but also improves its resistance to chemicals, abrasion, and environmental factors.

Crosslinking is a key feature that allows these coatings to form a robust, stable structure, making them ideal for use in demanding applications. The properties of these coatings can be tailored by modifying the degree of crosslinking, leading to various characteristics suitable for specific industrial needs.

In contrast, water-based paints do not rely on chemical crosslinking to achieve their film-forming properties; they typically evaporate water to form a film. High-gloss finishes refer to the level of sheen rather than a specific chemical process, while chlorinated coatings focus on a different type of chemical composition. Thus, the distinct characteristic of chemically crosslinking is what specifically identifies the coatings mentioned in the question.