Leveling agent is a commonly used coating additive, which can enhance the coating to form a flat, smooth and uniform film in the process of drying. A substance that reduces surface tension, increases leveling and uniformity, and improves the permeability of finishing fluids. It can reduce the possibility of spots and blemishes and increase the coverage. Make the film uniform.

Coating leveling agent: polydimethylsiloxane, although has a good ability to control the surface state, but there are many shortcomings, is not good, will affect the gloss of the coating film, often appear shrinkage pores, adhesion between the layers and so on. Polydimethylsiloxane molecular weight is different, its compatibility is different.