Catalyst 500 Platinum based Hanse Chemie Catalysts / Accelerators / Vulcanizing agents Silicones (Si) SEALANT ADHESIVE Metal catalysts based on platinum are needed in order to cure vinyl-functional silicone polymers with SiH-functional silicone crosslinkers . hanse chemie offers a highly reactive, neutral platinum catalyst that need to be added only in very small quantities (as a rule, 10-50 ppm in a formulation is sufficient). The active platinum catalyst is therefore not offered concentrated, but rather as a dilute solution in a vinyl-functional silicone polymer Metal catalysts based on platinum. Used to cure vinylfunctional silicone polymers with SiH-functional silicone crosslinkers. Added only in very small quantities. Use level: 10-50 ppm in a formulation.