| abstract |
The invention relates to a rubber composition which can be used to produce tyres and which is based on at least one diene elastomer, an inorganic reinforcing filler and a coupling agent which is used to join the inorganic filler and the elastomer. The inventive composition is characterised in that the aforementioned inorganic filler comprises a synthetic aluminosilicate having formula (I) Mx Si Aly Oa (OH)b, (H20)c, wherein: M is a cation which is selected from the group comprising K<+>, Na<+>, Ca<++> and mixtures of said cations; x > 0; y > 0; a >= 0; b >= 0, c >= 0 and a+b > 0, and having the following characteristics: (a) a specific surface area (BET) of between 20 and 300 m<2>/g; (b) an average particle size in mass (dW) of between 20 and 400 nm; and (c) a deagglomeration speed (alpha), using ultrasound, which is greater than 5.10<-4> µm<-1>/min. The invention also relates to the use of one such rubber composition for the production of rubber articles, in particular tyres or semi-finished rubber products, such as treads, which are intended for tyres. |