CAB-O-SIL® CT-1221 is a fluidizing additive specifically designed for powder coatings applications and other powders requiring enhanced free flow and fluidization performance. This is a high-purity silica that has been treated with hexamethyldisilazane. The treatment replaces many of the surface hydroxyl groups on the fumed silica with trimethylsilyl groups, rendering the silica very hydrophobic.


Application Information:

Powder Coatings:
  • Provides excellent fluidization and free-flow properties.
  • Hydrophobic nature provides anti-blocking/anti-caking properties.
  • Improves storage stability of powder coatings.
  • Improves transfer efficiency and productivity during the application of the powder coating.
  • High performance achieved at low loading levels.