Abstract
Hindered aliphatic amine light stabilizers have been found to protect polymers including polyolefins, polyurethanes, and styrenic resins against the destructive effects of solar radiation.1,2 Many of these patented aliphatic amines are based on 2,2,6,6-tetramethylpiperidine, although the functional group responsible for stabilization would appear to be an aliphatic amine with fully substituted α-methylene groups.3 Any α-methylenic hydrogens are expected to be vulnerable to rapid free radical attack whereas oxidation at the amine site will produce a nitroxide which can subsequently form a nitrone.4,5 Both mechanisms can give products capable of ring opening reactions, with destruction of the inhibitor.
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© 1984 Plenum Press, New York
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Carlsson, D.J., Chan, K.H., Tovborg Jensen, J.P., Wiles, D.M., Durmis, J. (1984). Hindered Amines as Antioxidants in UV Exposed Polymers. In: Kresta, J.E. (eds) Polymer Additives. Polymer Science and Technology, vol 26. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2797-4_3
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DOI: https://doi.org/10.1007/978-1-4613-2797-4_3
Publisher Name: Springer, Boston, MA
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