FIELD: chemistry.
SUBSTANCE: invention relates to rubber composition. Composition contains in 100 weight parts of rubber component at least 10 weight parts of polymer component (B) containing residual organic acid (A), added in the process of producing said polymer, and containing 5-90 weight parts of modified polymer (F) containing in its molecular structure modified part (E) capable to interact with the filler surface during mixing. Rubber composition also contains 10-150 weight parts reinforcing filler (C) and 6 weight parts or less than total amount of residual organic acid (A) and an organic acid (D) used in mixing for 100 weight parts of rubber component.
EFFECT: invention reduces hysteresis losses composition, as well as reducing heat generation and improving tire abrasive wear resistance.
38 cl, 91 ex, 12 tbl
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