FIELD: chemistry.
SUBSTANCE: invention relates to caoutchouc composition and tyre. Caoutchouc composition is obtained by mixing and batching caoutchouc component with hydrated silicon dioxide. Average diameter of primary particle D and logarithm of differential volume of pores LP in silicon dioxide with pore diameter of hydrated silicon dioxide, extracted from mixed and batched caoutchouc composition, 30 nm satisfy ratios, presented by formulae LP> - 0.045 x D + 1.45 (1) and D < 30 nm (2) at any value D, satisfying formula (2).
EFFECT: invention makes it possible to obtain good wear resistance without deterioration of tyre rolling resistance.
6 cl, 4 dwg, 6 tbl, 8 ex
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