Wire coat rubber composition for a tire and a tire comprising a wire coat rubber composition
AssigneeThe Goodyear Tire & Rubber Company
InventorsJulia Martine Francoise Claudine Tahon, Robert Anthony Bethea, James Joseph Golden, Carolin Anna Welter, Christian Jean-Marie Kaes
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Abstract
In accordance with the invention a wire coat rubber composition for a tire comprises from 70 phr to 100 phr of cis 1,4-polyisoprene rubber, from 0 phr to 30 phr of solution styrene butadiene rubber, from 65 phr to 95 phr pre-silanized precipitated silica, from 0.1 phr to 5 phr of a cobalt salt, up to 15 phr carbon black, up to 10 phr of a resin, and up to 10 phr oil. Further the present invention is directed to a tire comprising such a wire coat composition.
Claims20
A wire coat rubber composition for a tire, the rubber composition comprising 75 phr to 90 phr of cis 1,4-polyisoprene rubber, 10 phr to 25 phr of solution-polymerized styrene-butadiene rubber, 65 phr to 95 phr of pre-silanized precipitated silica, 0.1 phr to 5 phr of a cobalt salt, 0 phr to 15 phr carbon black, 0 phr to 10 phr of a resin, and 0 phr to 10 phr oil, wherein the pre-silanized precipitated silica has a CTAB adsorption surface area which is within the range of 130 m2/g to 210 m2/g, and wherein the solution-polymerized styrene-butadiene rubber has a glass transition temperature which is within the range of −30° C. to −90° C.
Dependencies are inferred from the claim text.