| Abstract: | Styrene-butadiene rubber (SBR) mixtures containing some sulfanilyl derivatives have been prepared. The effect of the latter compounds on the rate of vulcanization of SBR formulations as well as the ageing characteristics of corresponding vulcanizates were evaluated. In all cases, the efficiency of the compounds under investigation was correlated with their chemical structure. It was found that vulcanizates containing sulfanilyl thiourea compounds deteriorate to a lesser degree than those containing N-isopropyl-N'-phenyl-1, 4-phenylenediamine (IPPD) as conventional antioxidant. In addition, the effect of the type of carbon black on the efficiency of such compounds as antioxidants was evaluated. |
