TINUVIN® 479 is an HPT UV absorber that provides excellent performance in coatings due to:

• Extremely high extinction coefficient
• Very high photostability for long life performance
• Very high thermal stability and performance for coatings exposed to high bake cycles and / extreme environmental conditions
• Very low volatility
• Excellent performance in thin film applications
• Ideal spectral coverage in combination with other UV absorbers

TINUVIN® 479 has been developed as an interaction-free UV absorber to be used in amine and / or metal catalyzed coating systems or in coatings applied on base coats containing such catalysts.
Its high extinction coefficient allows the formulation of coatings with reduced UV absorber levels and / or thin film applications. Combinations especially with other HPT UV absorbers and the newest generation photoinitiators makes it an excellent choice for UV curable coatings.

TINUVIN® 479 is recommended for automotive OEM and refinish systems, UV cured coatings, and industrial finishes where long life performance is essential. Due to the high extinction coefficient and superior photostability, applications specifically include thin film applications. Depending on the application, the spectral coverage can be further broadened through combinations with other UV absorbers of the hydroxyphenyl-triazine or hydroxyphenyl-benzotriazole class such as TINUVIN® 400 or TINUVIN® 928.

The protective effects of TINUVIN® 479 can be enhanced when used in combination with hindered amine light stabilizers (HALS) such as TINUVIN® 123, TINUVIN® 292, or TINUVIN® 152. These combinations provide best protection against gloss reduction, cracking, blistering, delamination, and color change. The light stabilizers may be added to clear coats, base coats, or solid shades.