Coupsil® 8113

Coupsil® 8113 by Evonik is a reinforcing filler based on precipitated silica, surface modified with organosilane Si 69®. It reacts with unsaturated polymer during vulcanization under formation of covalent chemical bonds. It imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance and optimized dynamic properties. Offers the advantage of a homogeneous modification with low moisture adsorption during storage and significantly lower development of ethanol during mixing and processing. Applications for Coupsil® 8113 include low rolling resistant tires with high wet grip and low heat generation, mechanical rubber goods, shoe soles. It has a shelf life of 12 months.