First, it can significantly reduce the surface tension of the coating, improve the substrate's wettability of the coating and the fluidity of the paint film, eliminate Benard vortices and prevent blooming. The ability to reduce surface tension depends on its chemical structure. Another significant feature is the ability to improve the smoothness, anti-scrape resistance and blocking resistance of the coating. The disadvantage of this type of leveling agent is the tendency to stabilize the foam and affect the adhesion between layers, and some also pollute the construction environment such as the oven.

There are three main types of structures: polydimethylsiloxane, polymethylalkylsiloxane, and organically modified polysiloxanes. Organically modified polysiloxanes are the most important. Short-chain silicones do not affect heavy Painted.