| abstract |
The invention relates to a rubber composition to be used as a tread for a tire having enhanced adhesion on molten ice, comprising at least one diene elastomer such a natural rubber and/or a polybutadiene, more than 30 pce of a liquid plasticizer, between 50 and 150 pce of a reinforcing filler such as silica and/or carbon black, between 2 and 40 pce of potassium sulfate microparticles having a microparticle-size volumetric distribution, as measured by laser granulometry according to the ISO13320-1 standard, corresponding to the following relations: -50 µm < D 50 < 150 µm; -0.50 < Span< 1.50, where D50 is the diameter of the median particle corresponding to 50% of the cumulative particle distribution; Span= (D90-D10) / D50; D10 et D90 represent the particle diameter respectively corresponding to 10% and 90% of the cumulative particle distribution. The invention also relates to tread for tires comprising such a composition, and to the tires proper. |