Definition - What does Anti-settling Agent mean?
An anti-settling agent is a chemical compound used to delay the drying and solidification of a paint pigment during storage or after application on a metallic surface.
Corrosionpedia explains Anti-settling Agent
Three common types of anti-settling agents are organic bentonite, polyolefin particles and fumed silica. All types of anti-settling agents improve viscosity, system homogeneity and printing of alkaline primers.
The acting mechanism of organic bentonite prevents precipitation to change the rheological properties of a given system.
Polyolefin particles reduce swelling and dispersion in non-polar solvents. It is applied on gel coatings and plays a key role in preventing sagging, especially baking sagging.
Fumed silica is the ideal anti-settling agent due to its unique ability to preserve the color integrity of a coating. It is suitable for increasing color stability and reducing wetting.