Product Details


Evoniks’ highly dispersible silica (HDS) products provide solutions to improve the performance and fuel efficiency of OEM and replacement tires. ULTRASIL® 320 GR allows for reduced CO2 emissions by providing better fuel efficiency through reduced tire rolling resistance. In addition, ULTRASIL® 320 GR allows the compounder to improve e.g. wet traction and braking, wear and rolling resistance properties in passenger green tires. Evonik has engineered ULTRASIL® GR products for low dust and easy mixing to provide the rubber compounder with the optimal application solution.

Scope of Application

Used when superior reinforcement is desired Improved fuel efficiency due to reduced tire rolling resistance Improved tire performance such as wet traction and braking, wear Lower surface area for reduced compound viscosity and improvedprocessability at equal mixing energy compared with conventionalsilica Superior tear, fatigue and abrasion resistance vs. conventionalsilica Performs efficiently with coupling agents Significantly reduced tan-delta and heat build-up vs. carbon blackunder dynamic conditions Application fields are: Tires

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