| abstract |
FIELD: chemistry; transport. n SUBSTANCE: tire tread comprises of a cross-linked composition of natural rubber, which is characterised with hardness A by a scleroscope, more than 45 and less than 57, if measured in accordance with the Standard ASTM D 2240. And the tread is suitable for driving on ground with ice and snow and moist ground, improvement in wear resistance of tires and cohesion with moist ground. Composition contains, phr weight parts to one hundred parts of elastomer (elastomers): in quantity, which exceeds 25 phr and which go till 100 phr, one or a couple diene elastomers, each of which is characterised by temperature Tg in the diapason from -75°C to -40°C; at an amount less than 75 phr and till 0 phr, one or a couple diene elastomers, each of which is characterised with a temperature Tg in the diapason from -110°C till -75°C; in an amount in the diapason from 5 phr to 35 phr, at least one hydrocarbon plasticising resin, mixed with the mentioned elastomers (elastomer), from 5 phr to 35 phr, a natural plasticising bond of sunflower oil containing oleinic acid with a fraction of total mass not less than 60%. n EFFECT: improving wear resistance of tires and cohesion with moist ground. n 33 cl, 3 tbl, 3 ex |