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TIANSORB 900 |
General: |
Tiansorb 900 is a UV absorber of the hydroxyphenylbenzotriazole class developed specifically for coatings. It is particularly suitable for coating systems exposed to high temperatures and/or extreme environmental stresses. It is, therefore, especially suitable in view of the high durability demands for high performance coating applications. |
UV Transmittance Spectrum: |
(in Chloroform, 1 cm cell thickness) |
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Explanation:
Top line: 0.001% Tiansorb 900, corresponds to 0.3 % in a 40urn film;
Second line: 0.002 % Tiansorb 900, corresponds to 0.5 % in a 40urn film;
Third line: 0.004 % Tiansorb 900, corresponds to 1.0 % in a 40um film;
Bottom line: 0.006 % Tiansorb 900, corresponds to 1.5 % in a 40um film. |
Appearance: |
Yellow powder |
Application: |
Tiansorb 900 is recommended for applications such as
automotive coatings
coil coatings
powder coatings.
Tiansorb 900 may be used in combination with a light stabilizer of the sterically hindered amine or aminoether class (HALS) such as recommended below. These combinations give coatings superior protection against gloss reduction, cracking, blistering, delamination and color change. The light stabilizers may be added in two coat automotive finishes to the base and clear coat. However,
according to our experience the optimum protection is achieved by adding the light stabilizer to the topcoat.
The amount of Tiansorb 900 required for optimum performance should be determined in trials covering a concentration range. |
Recommended concentration : |
(concentrations are based on weight percent binder solids)
1-3 % Tiansorb 900
+0.5-2 % Tiansorb 292, or Tiansorb 123 |
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