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Mechanisms of antioxidant action: The involvement of nitroxyl radicals in the antifatigue action of secondary amines

✍ Scribed by A.A. Katbab; G. Scott

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
426 KB
Volume
17
Category
Article
ISSN
0014-3057

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✦ Synopsis

lsopropylaminodiphenylamine (IPPD, I) and a hindered bispiperidine ella) are effective antifatigue agents in vulcanized rubber. The former is also a powerful thermal antioxidant and antiozonant whereas the latter is not. An investigation of the mechanism of antifatigue action shows that both I and ila are converted to the corresponding nitroxyl radical during dynamic flexing of the rubber and that the nitroxyl is continuously regenerated in a cyclical mechanism involving the corresponding hydroxylamines.

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