ULTRASIL® 7500 GR
Precipitated silica for use as a white reinforcing filler in the rubber industry.
ULTRASIL® 7500 GR is a mechanically compacted granulate. On account of the granulation process it leads to less dust development during mixing. ULTRASIL® 7500 GR is an highly 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® 7500 GR and a bifunctional organosilane, such as Si 69®, Si 75®, Si 266® or VP 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.