rubber composition comprising a rubber component formed of a diene-based rubber and a pneumatic filling and method for producing said rubber composition

摘要

rubber composition comprising a rubber component formed of a diene-based rubber and a pneumatic filler and method for producing said rubber composition a rubber composition is provided including a rubber component formed of a diene-based rubber and a filling, where: when a real density determined by the method a of jis k6268 is represented by dc, and a density and mass fraction of a component i determined by the constituent analysis are represented by di and fi, respectively, the density In fact, density and mass fraction satisfy a relationship represented by the following formula (1): 0.970 = dc · s (fi / di) = 0.980. therefore, the rubber composition reduces the weight of a tire without reducing the tire's durability, such as abrasion resistance, and achieves a high level of balance between weight reduction and a reduction in tire rolling resistance. the present invention also relates to a tire using said composition, and to a method for producing said composition.