| 摘要 |
The present invention is a rubber composition comprising the following compound: R1-NH-phenyl-NH-R2 where the amino moieties occupy the 1 and 4 positions of the phenyl ring, and R1 and R2 are selected from the group consisting of: H, C 1to C3 straight chain or branched alkyl groups, and wherein RI and R2 may be the same or different; and where the t9o, isothermal at (125'C) is within thirty percent of the t<SUB>90</SUB>, after 28 days aging at forty degrees Celsius (40'C), as the unaged green rubber composition. In another embodiment of the invention, R1 and R2 are selected from C4 to C5 straight chain or branched alkyl groups. In another embodiment of the invention, R1 and R2 are selected from C6 to C 15 straight chain or branched alkyl groups. In another embodiment of the invention, the rubber compound is greater than 5 parts by weight per hundred parts of the rubber composition. In a further embodiment of the invention, the rubber composition set forth above has a scorch, measured at (105'C), within eight percent of the scorch, after (28) days aging at forty degrees Celsius (40'C), as the unaged green rubber composition. In a further embodiment of the invention, the rubber composition includes a dithiocarbamate accelerator. In a further embodiment of the invention, the rubber composition comprises natural or synthetic rubbers. The present invention also includes a tire comprising the composition. The present invention also includes a method or retreading a tire by use of the composition as a connecting rubber, and repairing a defect in a tire by use of the composition. |
