About HALS  

HALS (Hindered Amine Light Stabilizer)

Uses and classifications

The HALS – Hindered Amine Light Stabilizers – are derivatives of tetramethyl piperidines whose purpose is to trap free radicals once they are formed due to the photo-oxidation process. HALS are useful for preventing surface defects such as loss of gloss, cracking of the polymer film or chalking (in painting systems).

UV 770
UV 783