AEROSIL R 202 is a fumed silica surface-treated with polydimethylsiloxane with very good thickening properties. Applications and properties. AEROSIL® R 202 is a fumed silica surface-treated with polydimethylsiloxane

The silicone oil treatment guarantees the marked hydrophobia of the product
Highly efficient effect in the thickening and thixotropy of complex polar liquids, such as those based on epoxy, polyurethane, or vinylester resins
Improves the water resistance of moisture-sensitive formulations, such as cosmetic preparations
Improvement of the anti-settling behavior of pigments and anti-sagging behavior in 2-C epoxy coatings.
With silicone oil treatment, AEROSIL R 202 offers a tailor-made chemical surface treatment.
AEROSIL R 202 Due to its excellent electrical insulating ability and low water absorption, this hydrophobized, small-particle silica easily acquires and conserves electrical charge. AEROSIL R 202 is therefore typically used as a surface additive for toner particles in order to increase charge and improve flowability.
The high hydrophobicity of PDMS-treated, small particle AEROSIL R202 grades makes them particularly effective for achieving a high tribo-charge.
At the same time, PDMS-treated, small particle AEROSIL® grades maintain good flowability.
The slightly oily effect of the PDMS treatment provides additional benefits in some printing processes.