Si 69®

Si 69® is a bifunctional, sulfur-containing organosilane for rubber applications in combination with white fillers containing silanol groups.

Scope of Application

Si 69® reacts with silanol groups of white fillers during mixing and with the polymer during vulcanization under formation of covalent chemical bonds. This imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance and optimized dynamic properties. Si 69® is used in almost all fields of the rubber industry where silanol group-containing white fillers are used and optimum technical properties are required. Application fields are: Low rolling resistance tires, mechanical rubber goods, shoe soles The product is also available as a dry blend (1:1) with carbon black, named X 50-S®.