Product Description Tinuvin®479 is a hydroxyphenyl-triazine (HPT) UV absorber designed to fulfill the high
performance and durability needs for automotive and industrial finishes.
Key Features & Benefits - Extremely high extinction coefficient in the UV-B and UV-A range
- Low volatility/low migration
- Excellent photo-permanence
Chemical Composition Hydroxyphenyl-triazine UV absorber
Properties
Typical Characteristics Appearance light yellow crystalline powder
Solubility at 20°C (g/100 g solution):
butyldiglycol 2
butanol < 1
butyl acetate 17
butylglycol acetate 12
methoxypropl acetate 10
methoxypropanol 1
Solvesso® 100 ¹ 23
Solvesso® 150 ¹ 10

December 2010 Rev 1 Page 2 of 3

Line one: 0.001% Tinuvin® 479, corresponds to 0.25% in a 40 µm film
Line two: 0.002% Tinuvin® 479, corresponds to 0.50% in a 40 µm film
Line three: 0.003% Tinuvin® 479, corresponds to 0.75% in a 40 µm film
Line four: 0.004% Tinuvin® 479, corresponds to 1.0% in a 40 µm film
Line five: 0.006% Tinuvin® 479, corresponds to 1.5% in a 40 µm film
Applications
Tinuvin® 479 is a HPT UV absorber that provides excellent performance in coatings due to:
• Extremely high extinction coefficient
• Very high photo stability for long life performance
• Very high thermal stability and performance for coatings exposed to high bake cycles and /
or 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 curing 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 enhance 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.
The amount of Tinuvin® 479 required for optimum performance should be determined in trials
covering a concentration range.
Recommend Concentrations 0.5 – 2 % Tinuvin® 479 (or Tinuvin® 479 + Tinuvin® 400, weight ratio 1:2,
or Tinuvin® 479 + Tinuvin® 928, weight ratio 1:2)
+
0.5 – 2.0 % Tinuvin® 123 or Tinuvin® 292 or Tinuvin® 152
(concentrations are based on weight percent binder solids)
December 2010 Rev 1 Page 3 of 3
Safety
General The usual safety precautions when handling chemicals must be observed. These include the
measures described in Federal, State and Local health and safety regulations, thorough ventilation of
the workplace, good skin care and wearing of protective goggles.
Material Safety Data Sheet All safety information is provided in the Material Safety Data Sheet Tinuvin® 479.
Important
While the descriptions, designs, data and information contained herein are presented in good faith
and believed to be accurate, they are provided for guidance only. Because many factors may affect
processing or application/use, BASF recommends that the reader make tests to determine the
suitability of a product for a particular purpose prior to use. NO WARRANTIES OF ANY KIND,
EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING
PRODUCTS DESCRIBED OR DESIGNS, DATA OR INFORMATION SET FORTH, OR THAT THE
PRODUCTS, DESCRIPTIONS, DESIGNS, DATA OR INFORMATION MAY BE USED WITHOUT
INFRINGING THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS. In no case shall the
descriptions, information, data or designs provided be considered a part of BASF's terms and
conditions of sale. Further, the descriptions, designs, data, and information furnished by BASF
hereunder are given gratis and BASF assumes no obligation or liability for the descriptions, designs,
data or information given or results obtained all such being given and accepted at the reader's risk.
Tinuvin is a registered trademark of BASF Group.