Wacker Silane GF 56 Vinyl-functional ethoxysilane Wacker Adhesion Promoters >> Organofunctional silane Polyesters Polyolefins (PE, PP…) SEALANT WACKER SILANE GF 56 is a vinyl-functional ethoxysilane. It is used for filler treatment, to prepare modified fillers, that can subsequently form covalent bonds (e.g. peroxidically) to polymers. WACKER SILANE GF 56 is also used as an adhesion promoter and as a component in primers for coatings, particularly for vinyl polymers and polyesters as well as a co-monomer for the production of polyolefins. Vinyl-functional ethoxysilane. Used for filler treatment to prepare modified fillers and as an adhesion promoter.