ULTRASIL® 7000 is a precipitated silica for use as a reinforcement filler in the rubber industry.
ULTRASIL® 7000 is an easily dispersible and highly reinforcing silica which was especially developed for application in low rolling resistant passenger car tire tread compounds. It imparts to tread compounds high abrasion resistance combined with excellent rolling resistance and wet traction. To achieve these properties it is necessary to use ULTRASIL® 7000 and a bifunctional organosilane, such as Si 69®, Si 75®, Si 266® or Si 363. Additionally, the use of diethylene glycol, triethanolamine or other alkaline accelerators might be necessary in order to achieve optimum rubber-technical data. Application fields are: Tires, mechanical rubber goods.