Si 75®

Si 75® by Evonik is a bifunctional, sulfur containing organosilane. It reacts with silanol groups of white fillers during mixing and with the polymer during vulcanization under formation of covalent chemical bonds. It has a higher temperature stability and therefore allows higher mixing temperatures. Si 75® imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance and optimized dynamic properties. It is used for rubbers in combination with white fillers containing silanol groups. Application includes low rolling resistance tires. It has a shelf life of 12 months.