BYK-4509

Adhesion promoter for solvent-borne and aqueous systems applied to metallic substrates. The neutralised, acidic groups of the silicone-free adhesion promoter create a strong affinity, in particular to metallic substrates, and improve adhesion to steel, galvanised steel, aluminium and also to glass. BYK-4509 reacts with melamine resins and polyisocyanates and is bound into the polymer matrix through this. It is compatible with most binders and is therefore ideal for universal use. It can be utilised in aqueous and solvent-borne coatings. BYK-4509 is recommended first and foremost for use in baking systems and 2 K systems. In solvent-borne, acid-catalysed systems, it has no influence on cross-linking. In aqueous systems, BYK-4509 shows very good pH stability. Especially recommended for can, coil and industrial coatings. Also suitable for protective coatings.