| abstract |
The present invention is made from at least one elastomer, an inorganic reinforcing filler, an agent for coupling the elastomer with an inorganic reinforcing filler, and a crosslinking system; The inorganic reinforcing filler relates to a rubber composition comprising at least one silica S having the following: CTAB specific surface area S CTAB in the range of 40 to 300 m 2 /g; -Difference between BET specific surface area S BET and CTAB specific surface area S CTAB of 35 m2/g or more; -Aluminum content W Al in the range of 0.5 to 7.0% by weight relative to the weight of silica S; An aggregate size distribution width Ld of 1.5 or more, measured by centrifugal sedimentation; And-for a given CTAB specific surface area S CTAB value and a given aluminum content W Al , the amount A is defined by the following equation (I): (Where, [d50] is the value of d50 expressed in nm; [S CTAB ] is the value of S CTAB expressed in m 2 /g; [W Al ] is expressed as the weight% of the weight of silica S W Al ); The median aggregate diameter d50 measured by centrifugal sedimentation, so that the amount A satisfies the following relation (II): . The composition of the present invention can be used in tires or semi-finished articles for tires. |