Patent ID: 9333802
Filing Date: 2016-05-10
CPC Classification: B60C,C08K

Claim Text:
1. A diene rubber composition for tires based on at least (i) one diene elastomer, (ii) one reinforcing inorganic filler and (iii) one coupling agent which provides the bonding between the reinforcing filler and the elastomer, wherein the inorganic filler comprises at least one silica formed of aggregates of primary particles (A) of silica, at the surface of which occur primary particles (B) of silica with a size smaller than that of the primary particles (A), and wherein the at least one silica has: a CTAB specific surface (S a d50 median size of aggregates, measured by XDC particle sizing after ultrasonic deagglomeration, such that: a pore volume distribution such that: a pore size distribution such that: the silica exhibits a parameter C, measured by small angle X-ray scattering, such that: C/S