COUPLING SYSTEM (WHITE FILLER/DIENE ELASTOMER) BASED ON POLYSULPHIDE ALKOXYSILANE, ENAMINE AND GUANIDINE DERIVATIVE

摘要

The invention concerns a coupling system (white filler/diene elastomer) for a rubber composition based on diene elastomer reinforced with a white filler, formed by the combination of a polysulphide alkoxysilane, an enamine and a guanidine derivative. The invention also concerns a rubber composition useful for making tyres, comprising at least (i) a diene elastomer, (ii) a white filler as reinforcing agent, (iii) a polysulphide alkoxysilane as coupling agent (white filler/diene elastomer) with which are combined (iv) an enamine and (v) a guanidine derivative. The invention further concerns a method for preparing said composition. Finally the invention concerns a tyre or semi-finished product for a tyre comprising said rubber composition.