FIELD: automotive industry.
SUBSTANCE: rubber mixture comprises 0.5-100 weight percent of reaction product obtained by reacting of a part or all the polymer composed of conjugated diene compound and an aromatic vinyl compound with an anhydride; 0.1-20.0 weight percent of tetraamine, 5-15- weight percent of silicon dioxide and 100 weight percent of the rubber component. Wherein the polymer mixture has an average weight molecular weight from 1.0⋅103 to 1.0⋅105, and tetraamines are compounds of the following formula
wherein each RA, RB, RC, RD, RE, RF, RG and RH independently represents a hydrogen atom, and ALK represents a tetravalent C1-C6 aliphatic hydrocarbon group.
EFFECT: invention allows to improve the abrasion resistance without deterioration in energy use efficiency.
10 cl, 3 tbl
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RU2573870C2 |
