Stabilisation of Rubbers in Aggressive Environments
The synthesis of thiol-adduct antioxidants by a mechano-chemical procedure in elastomers is described. The yields of polymer-bound antioxidants so formed increase with increasing antioxidant loading and for most unsaturated polymers an optimal yield is observed at 20–30% loading. Bound antioxidant concentrates made by this procedure have been used as additives in a range of elastomers and it has been demonstrated that an adduct concentrate (masterbatch) in one polymer (e.g. EPDM) can be used in a range of other polymers without sacrificing efficiency.
KeywordsNatural Rubber Adduct Formation Antioxidant Thiol Unsaturated Polymer Conventional Antioxidant
Unable to display preview. Download preview PDF.
- 1.Scott G, Atmospheric Oxidation and Antioxidants, Elsevier, London and New York, 1965, Chapters 4 and 9.Google Scholar
- 2.Thomas D. K, Developments in Polymer Stabilisation-1, Ed. G. Scott App. Sci. Pub., London, 1979, p. 137.Google Scholar
- 3.Cain M. E, Knight G. T, Lewis P. M. and Saville B, Rubb. J., 50 (1968) 204.Google Scholar
- 4.Scott G, Developments in Polymer Stabilisation-4, Ed. G. Scott, App. Sci. Pub., London, 1981, p. 181.Google Scholar
- 5.Horvath J. W, Grimm D. C. and Stevick J. A, Rubb. Chem. Tech, 48 (1975) 106.Google Scholar
- 8.Ref. 1, Chapter lO.Google Scholar
- 11.Scott G. and Suharto R, Europ. Polym. J., in press.Google Scholar
- 12.Chakraborty K. B. and Scott G, unpublished work.Google Scholar
- 15.Scott G. and Tavakoli S. M, unpublished work.Google Scholar