High Cis-1,4-BRs and SBRs to Meet Current and Future Tire Demands

Never before has the demand for more fuel efficient, safe, durable and environmentally friendly tires been greater. In particular, great emphasis has been put on improving the rolling resistance as evidenced by the various tire labeling legislations in progress around the globe. In addition to proper tire inflation, the rubber tread compound itself has a great influence on the resulting properties of a tire. Tire tread formulations typically consist of blends of polybutadiene (BR) and styrene-butadiene copolymers (SBR). This paper will examine and highlight the influence which high cis-1,4 polybutadienes (BR) and solution SBRs (S-SBRs) have on the tire tread compound. Specifically, it will focus on novel BRs and S-SBRs aimed at reducing rolling resistance (fuel economy), improving wet traction (safety) and wear (mileage). It will also discuss the successful introduction of environmentally friendly process oils which meets current regulations of the European Union.

LANXESS works actively on BR and SBR developments in order to contribute to higher ratings in the upcoming tire labelling systems in Europe and USA, and support compliance to future tire legislations in the European Union, coming into force soon, and to set global standards.