RUBBER COMPOSITION INCLUDING A HYDROCARBON RESIN WITH A LOW GLASS-TRANSITION TEMPERATURE

摘要

The invention relates to a rubber composition based on at least one diene elastomer with a glass-transition temperature (Tg) of less than -40°C, a reinforcing filler with a content included in a range of from 50 to 70 parts by weight per hundred parts of elastomer (phe), a vulcanisation system, and a combination of plasticisers, said combination of plasticisers including more than 10 phe (parts by weight per hundred parts of elastomer) of at least one hydrocarbon resin with a glass-transition temperature (Tg) of between -40°C and 20°C and at least one complementary plasticiser selected from the group made up of the plasticiser oils, the hydrocarbon resins with a Tg higher than 20°C and the mixtures thereof, the total content of plasticiser being included in a range of from 15 to 35 phe, the content of reinforcing filler and of plasticiser being such that the ratio of the total content of filler to the total content of plasticiser is within a range of from 2 to 3.4.