A rubber compound has at least two glass transition temperatures Tg1 and Tg2, based on at least one vulcanization system and at least two rubber compositions C1 and C2, the composition C1 comprising at least one elastomer E1 and having a Tg1, the composition C2 comprising at least one elastomer E2 different from E1, and a reinforcing filler, and the composition C2 having a Tg2, in which: Tg1≥−50° C.; the rubber compound satisfies Tg1-Tg2≥23° C.; the rubber compound has a loss factor profile which is such that all the tan δ peaks present at a temperature above the temperature Tg1 have a width at half height of ≤23° C.; E1 is predominant in the rubber compound; E2 is an isoprene diene elastomer; and the vulcanization system comprises at least one vulcanization accelerator A selected from thiurams, dithiocarbamates, dithiophosphates, xanthates and mixtures thereof.
RUBBER MIXTURE COMPRISING A RAPID VULCANIZATION ACCELERATOR
16.01.2025
Patent
Elektronische Ressource
Englisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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