Studies on a New Antireversion Agent for Sulfur Vulcanization of Diene Rubbers

• DOI: 10.5254/1.3538397
• Publication Date: 2011-02-16T23:21:06Z
• Authors: A. H. M. Schotman; P. J. C. van Haeren; A. J. M. Weber; F. G. H. van Wijk; J. W. Hofstraat; A. G. Talma; A. Steenbergen; R. N. Datta
• Keywords: Diene

Abstract The mechanism of biscitraconimides (BCI) as antireversion agents for sulfur vulcanized diene rubber was investigated choosing squalene a model substrate. Curing with in the presence accelerator, activator and BCI at 170°C gave bridged adducts. products were identified by spectroscopic methods being results Diels-Alder reaction (dienophile) conjugated polyenes that are formed result reversion. rate which network degrades is comparable to adduct formed. As this, nearly constant crosslink density obtained after optimum cure time (t90). Based on this concept, advantage using 1,3-bis-(citraconimidomethyl) benzene (BCI-MX), representative BCI-class, NR based compounds examined.