Rubber composite and process for obtaining same

A process for obtaining a rubber composite in particulate form, the process comprising the steps of:

• (a) mixing heavy-fraction oil distillate with particulate rubber at a first elevated temperature under conditions of high sheer rate to obtain oil-swollen rubber particles;
• (b) adding at least one first powdered additive to the oil-swollen rubber particles to obtain a mixture;
• (c) reducing the temperature of the first mixture by at least 20° C.;
• (d) heating the first mixture to a second elevated temperature under conditions of high sheer rate;
• (e) reducing the temperature of the mixture to about 20° C. at a cooling rate of at least 2° C./min;
• and
• (f) adding at least one second powdered additive to said mixture under conditions of high sheer rate to said rubber composite,
• such that the rubber composite comprises between about 10 and about 20% wt of said heavy-fraction oil distillate, the heavy-fraction oil distillate and said at least one first additive being substantially contained within an internal structure of the rubber, and the rubber's external surface being substantially oil-dry and said at least one second additive is present at the external surface of the rubber composite.