BYK-4511 is a polymeric adhesion promoter that improves adhesion on various metals as well as glass. It increases flexibility and resistance to surface impurities. BYK-4511 is recommended for two-pack epoxy resin systems and baking systems. It provides 1-5% dosage for total formulation. The product must be incorporated into the hardener or along with hardener before application. It can also be added to letdown or finished paint while stirring continuously. BYK-4511 promotes adhesion on substrate materials and increases performance properties like flexibility and durability against external factors.