Evonik expands range of rubber additives for tyre applications

Evonik is expanding its silica/silane system, and with it the technology of modern tyre production. Newly developed Polyvest ST has the potential to further decrease rolling resistance in tyres, thus significantly reducing the environmental impact and fuel consumption of vehicles. This has been confirmed in tests on natural rubber-based compounds.

Green tyre technology, which uses precipitated silicas and rubber silanes like Si 69 and Si 266 from Evonik’s portfolio, already reduces rolling resistance by up to 30 percent relative to carbon-black-filled tyres. “By combining the existing technology with Polyvest ST, tyre manufacturers will now be able to further optimise their products. This is the latest chapter in our long history of successfully developing rubber additives for the tyre industry,” stated Dr Kai-Steffen Krannig of Evonik’s Innovation Management.