C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 9/00 (2006.01) B60C 1/00 (2006.01) B60C 15/06 (2006.01) B60C 17/00 (2006.01) C08J 3/24 (2006.01) C08L 7/00 (2006.01) C08L 21/00 (2006.01)
Patent
CA 2344955
The invention concerns rubber compounds consisting of at least one double bond- containing rubber and additions of polybutadiene rubber particles having a glass transition temperature <-60°C together with vulcanisates and rubber mouldings manufactured therefrom. The rubber compounds according to the invention are characterised in the uncrosslinked state by good processability and adequate scorch resistance and in the vulcanised state by high Shore A hardness, high impact resistance, low hysteresis losses and low heating-up under dynamic stress, together with a low specific density. The vulcanisates are particularly suitable for the manufacture of tyre components for which low heating-up under dynamic stress is required, e.g. for tyre bead and apex compounds, subtread compounds, tyre carcasses and for tyre sidewalls. The compounds are particularly suitable for the manufacture of reinforced sidewalls for tyres with emergency running properties (inserts for run-flat tyres).
Obrecht Werner
Sumner Anthony
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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