| abstract |
The present invention provides a rubber composition that can exhibit excellent low heat build-up, tear strength, and durability; and a rubber composition having excellent low heat build-up, tear strength, and durability, by incorporating a compound represented by the following formula (1) or (2), or a salt of the compound.In the formula (1), R<sub>1</sub>, R<sub>2</sub>, R<sub>3</sub>, and R<sub>4</sub> are the same or different, and each represents a hydrogen atom, an alkyl group, or the like; R<sub>3</sub> and R<sub>4</sub> may be taken together to form an alkylidene group, and any two of R<sub>2</sub>, R<sub>3</sub>, and R<sub>4</sub> may be taken together to form an alkylene group; and each of these groups may have one or more substituents.In the formula (2), R<sub>5</sub>, R<sub>7</sub>, and R<sub>8</sub> are the same or different, and each represents a hydrogen atom or an amino group; and R<sub>6</sub> represents an alkyl group or an aralkyl group; and each of these groups may have one or more substituents. |