Which category does an inhibitive pigment fall under in paint formulation?

Inhibitive pigments are specifically designed to provide corrosion resistance in paint formulations. These pigments work by chemically reacting with the metal surface to form a protective barrier that limits the initiation and propagation of corrosion. By improving the paint's ability to resist rust and other forms of degradation caused by environmental factors, inhibitive pigments play a critical role in extending the durability and longevity of protective coatings.

The other categories listed do not align with the primary function of inhibitive pigments. Adhesion agents are primarily focused on promoting the adhesion between the coating and the substrate, coloring agents are used for aesthetic purposes to provide color to the paint, and drying accelerators serve to speed up the drying time of the coating. Each of these components serves a distinct purpose within paint formulation, but it is the inhibitive pigments that specifically contribute to corrosion resistance.