Rubber composition and run-flat tire using same
AssigneeSumitomo Rubber Industries, Ltd.
InventorKazuo Hochi
Life of this patent
Estimating the term…
Abstract
The present invention can provide a rubber composition, in which all of strength at break, low heat-build up property, run-flat durability and low fuel consumption can be improved since the rubber composition comprises 5 to 120 parts by weight of flake-like graphite having an average aspect ratio of 3 to 80 and an average particle diameter of 2 to 80 μm on the basis of 100 parts by weight of a diene rubber component, and a run-flat tire using the rubber composition.
Claims9
A rubber composition, comprising 5 to 120 parts by weight of a flake-like graphite having an average aspect ratio of 3 to 80 and an average particle diameter of 2 to 80 μm on the basis of 100 parts by weight of a diene rubber component;
- wherein said diene rubber component comprises 20 to 80% by weight of a butadiene rubber;
- and
- wherein the graphite is layered graphite having a crystal structure of hexagonal, plate-like form.
A reinforcing rubber layer of a sidewall part of a tire which comprises a rubber composition, comprising 5 to 120 parts by weight of a flake-like graphite having an average aspect ratio of 3 to 80 and an average particle diameter of 2 to 80 μm on the basis of 100 parts by weight of a diene rubber component, wherein said graphite is layered graphite having a crystal structure of hexagonal, plate-like form;
- and
- wherein said diene rubber component comprises 20 to 80% by weight of a butadiene rubber.
A run-flat tire having an improved strength at break, a low heat build-up property, improved run-flat durability and a low fuel consumption, which comprises a rubber composition, comprising 5 to 120 parts by weight of a flake-like graphite having an average aspect ratio of 3 to 80 and an average particle diameter of 2 to 80 μm on the basis of 100 parts by weight of a diene rubber component, wherein the graphite is layered graphite having a crystal structure of hexagonal, plate-like form;
- and
- wherein said diene rubber component comprises 20 to 80% by weight of a butadiene rubber.
Dependencies are inferred from the claim text.