Performance Hydrocarbon Resins in Tread Formulations: The Next Generation
In the current work, Eastman’s ImperaTM performance resins are evaluated in an sSBR/BR passenger car HP/UHP silica tread compound. ImperaTM 1500 series performance resins are known to provide a robust benchmark for WG-RR balance. In this talk, newly introduced ImperaTM 1600 series resins are shown to provide a 5% improvement in WG-RR balance, and under development next generation ImperaTM resins are shown to provide a 10% improvement compared to the 1500 series benchmark. The impact of resin molecular characteristics on the compatibility with the polymers used in the formulation are evaluated, and in turn, the effect of compatibility on compound viscoelastic properties are discussed. In summary, Eastman’s ImperaTM resins portfolio continues to evolve to provide tire compounders new differentiated resin solutions that would enable them to meet the ever growing WG-RR tradeoff improvement needs posed by regulatory requirements and consumer demands.