Patent ID: 7335692

Claim:
A cross-linkable or cross-linked rubber composition usable for constituting a tire tread, said composition being based on one or more diene elastomers and a plasticizer, wherein said plasticizer comprises: one or more synthetic and/or natural compounds not extracted from petroleum present in a mass fraction of from 45% to 100%, wherein at least one of said natural compounds is sunflower oil, said sunflower oil comprising at least one glycerol fatty acid triester, wherein as a whole, the fatty acids in said sunflower oil comprise oleic acid in a mass fraction equal to or greater than 70%, wherein the amount of said sunflower oil in the composition is from 10 to 40 phr, one or more plasticizing oils extracted from petroleum in a mass fraction of from 0% to 55%, wherein the plasticizing oils are selected from the group consisting of paraffinic, aromatic and naphthenic oils; and a hydrocarbon plasticizing resin in a quantity of from 5 to 20 phr, wherein said hydrocarbon plasticizing resin is miscible in said diene elastomer(s), has a glass transition temperature of between 10° C. and 150° C. and a number-average molecular weight of between 400 g/mol and 2000 g/mol.