| abstract |
A rubber composition for a vibrationproof rubber which comprises a diene-based rubber and a tetrazine compound represented by general formula (1) [wherein X1 and X2 are the same or different and represent a hydrogen atom, an alkyl group, an alkylthio group, an aralkyl group, an aryl group, an aryl thio group, a heterocyclic group or an amino group, each group optionally having one or more substituents] or a salt thereof. |