| 摘要 |
The present invention addresses the problem of providing a rubber vibration isolator composition with which low temperature characteristics can be significantly improved while maintaining basic strength characteristics (hardness, tensile elongation, tensile strength), and a rubber vibration isolator obtained by curing said rubber composition. The present invention provides a rubber vibration isolator composition characterized in containing natural rubber, high cis content isoprene rubber, a crosslinking agent and an aromatic sulfonamide having a specified chemical structure. The high cis content isoprene rubber refers to the cis-1,4 bond content being at least 95%. |
| 主权项 |
1. A rubber vibration isolator composition characterized by comprising natural rubber, a high-cis-content isoprene rubber having a cis-1,4 bond content of at least 95%, a crosslinking agent and an aromatic sulfonamide of the following structural formulawherein R1 is a moiety of the formula —Sx—CnHmClp, x being an integer of 0 or more, n being an integer of 1 or more, m being an integer of 0 or more and p being an integer of 1 or more, such as to satisfy the condition m+p=2n+1, and S being a sulfur atom, C being a carbon atom, H being a hydrogen atom, and Cl being a chlorine atom that may be substituted with another halogen element; and R2 and R3 are each a hydrogen atom, an amino group, or a hydrocarbon group of 1 to 8 carbon atoms that is linear, branched, cyclic or a combination thereof, without limitation as to the position and number of substituents thereon. |
