Rubber composition and pneumatic tire
AssigneeToyo Tire & Rubber Co., Ltd.
InventorShinsaku Kamada
Life of this patent
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Abstract
A rubber composition comprising a diene rubber, a tackifier comprising a resin having a weight average molecular weight of from 1,500 to 2,500, and a wax is disclosed. The wax contains from 20.0 to 40.0 mass % of a linear saturated hydrocarbon having from 25 to 30 carbon atoms, from 8.0 to 18.0 mass % of a linear saturated hydrocarbon having from 35 to 40 carbon atoms, and from 1.0 to 6.0 mass % of a linear saturated hydrocarbon having 45 or more carbon atoms. The amount of the tackifier added is larger than the amount of the wax added.
Claims7
A rubber composition comprising a diene rubber, a tackifier comprising a resin having a weight average molecular weight of from 1,500 to 2,500, and a wax,
- wherein the wax comprises from 24.0 to 35.0 mass % of a linear saturated hydrocarbon having from 25 to 30 carbon atoms, from 9.0 to 17.0 mass % of a linear saturated hydrocarbon having from 35 to 40 carbon atoms, and from 2.0 to 6.0 mass % of a linear saturated hydrocarbon having 45 or more carbon atoms, in 100 mass % of the wax,
- the content of the linear saturated hydrocarbons in 100 mass % of the wax is from 70 to 100 mass %, and
- the amount of the tackifier added is larger than the amount of the wax added.
Dependencies are inferred from the claim text.