Structurally modified, hydrophilic AEROSIL® improves the antifouling properties and product life of antifouling coatings. It is used in formulations with cuprous oxide (Cu₂O) to take advantage of the resulting synergies. VP 4200 is a development product that, as an active extender with cuprous oxide, exhibits effective antifouling properties while lowering the amount of Cu₂O needed in the coating formulation. Visit www.evonik.com.