Rubber composition for a tire tread
AssigneeCompagnie Generale Des Etablissements Michelin
InventorTenko Hayashi
Life of this patent
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Abstract
A tire has a tread comprising a rubber composition based on at least an elastomer matrix, a reinforcing filler comprising between 65 and 115 phr of a reinforcing inorganic filler, more than 30 phr of a plasticizing agent, and more than 5 phr of crumb rubber particles having a median particle size by volume, which is measured by laser diffraction methods in accordance with ISO standard 13320-1, which satisfy the following relations: 100 μm<D50<1000 μm, wherein D50 is the medium particle size by volume corresponding to 50% of a cumulative distribution obtained from the volume particle size distribution.
Claims20
A tire having a tread comprising a rubber composition based on at least:
- an elastomer matrix;
- a reinforcing filler comprising between 65 and 115 phr of a reinforcing inorganic filler;
- more than 30 phr of a plasticizing agent;
- and
- more than 5 phr of crumb rubber particles having a median particle size by volume, which is measured by laser diffraction methods in accordance with ISO standard 13320-1, which satisfy the following relations:
- 100 μm<D50<1000 μm,
- wherein D50 is the median particle size by volume corresponding to 50% of a cumulative distribution obtained from a volume particle size distribution.
A rubber composition based on at least:
- an elastomer matrix;
- a reinforcing filler comprising between 65 and 115 phr of a reinforcing inorganic filler;
- more than 30 phr of a plasticizing agent;
- and
- more than 5 phr of crumb rubber particles having a median particle size by volume, which is measured by laser diffraction methods in accordance with ISO standard 13320-1, which satisfy the following relations:
- 100 μm<D50<1000 μm;
- wherein D50 is the median particle size by volume corresponding to 50% of a cumulative distribution obtained from a volume particle size distribution.
Dependencies are inferred from the claim text.