A review on the mechanism of action and applicability of Hindered Amine Stabilizers

Hindered Amine Stabilizers (HAS) are by far the best performing UV-stabilizers and in a number of applications they are the best performing long-term heat stabilizer too. In this paper an overview is given of the different mechanisms proposed that can explain the high activity as well as the applicability of HAS as UV-stabilizer and as long-term heat stabilizer.