Cytec Light Stabilizer
UV-3853S UV-3808PP5UV-3346UV-3529UV-2908V703THT-4611,ect.
Hindered Amine Light Stabilizer HALS
It can protect from UV damage to the plastic, although itself hardly absorbs ultraviolet light, but can effectively capture the free radical which is generated by ultraviolet energy, so as to achieve the purpose of the light stabilizer.
HALS has different mechanisms with benzotriazole-based ultraviolet absorber, both of which can be obtained with a synergistic effect, and will exhibit good lightfastness.