CAB-O-SIL® CT-1221

CAB-O-SIL® CT-1221 by Cabot is high purity, fumed silica designed for powder coatings applications. It is has been treated with hexamethyldisilazane (HMDZ). This treatment replaces many of the surface hydroxyl groups on the fumed silica with trimethylsilyl groups, rendering it very hydrophobic. Exhibits aggregated structure, submicron particle size, low bulk density and hydrophobic surface chemistry. CAB-O-SIL® CT-1221 imparts excellent fluidization, free-flow properties, improved storage stability, transfer efficiency and productivity during application. It provides anti-blocking/anti-caking properties. Enables good film appearance (lack of orange peel) in final coating. At low loading levels, CAB-O-SIL® CT-1221 possesses high performance.