PNEUMATIC TYRE Russian patent published in 2013 - IPC C08L7/00 C08L9/00 C08K3/34 C08K5/548 B60C1/00 

FIELD: chemistry.

SUBSTANCE: rubber mixture contains per 100 pts.wt of a rubber component which contains at least one of natural rubber or synthetic rubber based on diene, 20-150 pts.wt precipitated silicon dioxide as filler and 1-25 pts.wt of a defined sulphur-containing silane compound as silane binder; silicon dioxide has cetyltrimethylaluminium bromide (CTAB) adsorption specific surface area (m²/g) and mode A_as of diameter (nm) of primary aggregates, determined by acoustic measurement of particle size distribution satisfying the equation (A), and for which the difference between loss of mass during calcination (wt % loss during calcination at 750°C for 3 hours) and loss of mass when heating (wt % loss during heating at 105°C for 2 hours) satisfies the equation (B) :A_as ≥ -0.76 × (CTAB) + 274 (a) (loss during calcination) - (loss during heating) ≤ 3 (B).

EFFECT: invention improves technological effectiveness of processing a rubber mixture and obtain tyres with low heat release and improved wear resistance.

12 cl, 3 tbl, 46 ex