Bridgestone Europe Nv/sa

Giampaolo Chieffi

Raffaele Di Ronza

Davide Privitera

A rubber compound for the preparation of portions of pneumatic tyres comprising a cross-linking unsaturated chain polymer base, a filler system and a vulcanization system. The filler system comprises (a) a first carbon black having a surface area less than or equal to 170 m/gr in a quantity greater than or equal to 25 phr; (b) a second carbon black having a surface area greater than or equal to 250 m/gr in a quantity such that the ratio between the quantity of the first carbon black and the quantity of the second carbon black is greater than or equal to 3 and less than or equal to 10; (c) a carbon black dispersing agent in a quantity of less than or equal to 1 phr.

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Rome, Italy

Giampaolo Chieffi