Products of the Polymer XP RV range are vinyl-functional polydimethyl siloxanes of various molecular weights. They contain both, terminal and pendant vinyl groups. Due to this structure, they produce higher crosslinking densities than Polymer VS at similar viscosity levels. Application: Polymer XP RV can be used as a base polymer or as an additive with Polymer VS. It cures by a platinum-catalyzed addition reaction with silicone crosslinkers containing SiH-groups. The formulator can adjust the formulation properties over a wide range by selecting the suitable crosslinkers (Crosslinker 100 series, Crosslinker 200 series), catalysts (Catalyst 500 series), additives and fillers (VQM, Compound VS). Information provided by Evonik |