Abstract
Effect of the oligomeric unsaturated polyketone (UPK) additive on the rheological properties, vulcanization, and structural characteristics of elastomeric compositions based on butadiene and nitrile-butadiene rubbers containing N-cyclohexyl-2-benzothiazolylsulfenamide (sulfenamide C) as vulcanizing accelerator is investigated. It was demonstrated using IR and NMR spectroscopy that sulfenamide C reacts with polyketone. A mechanism for such interaction, which includes the sequential addition of benzothiazyl sulfide and amine fragments to the oligomeric chain, was proposed.
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The study was supported by the Russian Foundation for Basic Research (Project No. 17-03-00706). Synthesis and characterization of oligomeric unsaturated polyketone were carried out within the framework of the government assignment for the Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences (Project AAAA-A17-117041710083-5).
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2171—2176, November, 2020.
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Voronchihin, V.D., Sorochenko, O.V., Semikolenov, S.V. et al. Influence of oligomeric unsaturated polyketone on the vulcanization of elastomeric compositions in the presence of sulfenamide C. Russ Chem Bull 69, 2171–2176 (2020). https://doi.org/10.1007/s11172-020-3018-x
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DOI: https://doi.org/10.1007/s11172-020-3018-x