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Abstract
1-( N-oxydiethylene thiocarbamyl)-2-(N-oxydiethylene thio) ben zimidazole (MBSPT) has been found to act as a dual function accelerator cum antioxidant in natural and styrene butadiene rubber. Its dual functional activ ity has been evaluated in different diene rubbers viz. NR, SBR, CR, BR, IIR, NBR and EPDM. The accelerating function of MBSPT in these diene rubbers was compared with a standard commercial accelerator, N-cyclohexyl-2- benzothiazole sulfenamide (CBS), and the antioxidant function of MBSPT with two different commercial antioxidants viz. N-isopropyl-N'-phenyl-p- phenylenediamine (IPPD) and 2-mercapto benzimidazole (MBI). The results of this study show better dual performance of MBSPT in NBR, SBR, CR, NR and IIR rubbers in accelerating and antiaging characteristics. MBSPT, therefore, can be prescribed for technical rubber products instead of two monofunctional additives.
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