A rubber composition based at least on a reinforcing filler, on a Lewis or Bronsted acid and on a modified diene elastomer is provided. The diene elastomer bears one or more pendant associative groups comprising at least one nitrogen atom. The diene elastomer before modification is obtained by stereospecific polymerization in the presence of a neodymium-based Ziegler-Natta catalytic system. The Lewis acid is selected from the group consisting of aluminium oxides, titanium oxides and the compounds M(L)n, with M being boron, magnesium, aluminium, titanium, iron, zinc, indium or ytterbium, L being a monodentate or bidendate ligand and n being an integer ranging from 2 to 4. The Bronsted acid is selected from the group consisting of sulfonic acids. Such a composition exhibits a very low hysteresis.
REINFORCED RUBBER COMPOSITION COMPRISING A FUNCTIONAL DIENE ELASTOMER
2018-11-22
Patent
Electronic Resource
English
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