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UV Absorber for Waterborne Coatings

Hostavin® 3326 DISP

Hostavin 3326 DISP is a 52% aqueous dispersion of a halogenated benzotriazole UV absorber, designed for UV stabilization of paints and clearcoats. This UV absorber is particularly suitable for interior and exterior waterborne wood coating applications.

Hostavin 3326 DISP is an easy to use dispersion requiring no milling or dissolving before use and can be incorporated at any stage of the paint production. Hostavin 3326 DISP has been specifically developed for exterior waterborne wood clearcoats, due to its broad UV absorption profile.

The product does not require a hazard warning label according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
For further information please refer to the Material Safety Data Sheet.
Chemical Composition

Chemical nature:        2-(5-chloro-2H-benzotriazol-2-yl)-6-(1,1dimethyl-ethyl)-4-methyl-phenol

Classification:             Halogenated benzotriazole UV absorber


Delivery Specifications and (*) General Properties

CharacteristicsUnitTarget ValueTest Method
Appearance slightly yellowish dispersionA.931.0003
Solids content[%]64.8 - 68.5A.951.0001
UVA content[%]51 - 55A.022.1002
pH value 6.0 - 7.5A.999.3001
*Particle size distribution D90 [µm]~ 7 
*Density (20°C)[g/cm³]~ 1.08 

Hostavin 3326 DISP is recommended to enhance the UV light resistance of waterborne interior clearcoats, such as wood flooring and furniture coatings. It is also suitable for exterior wood coating applications, such as decking, cladding and general garden furniture coatings.

For the stabilization of exterior wood clearcoats, it ist recommended to use Hostavin 3326 DISP in combination with a HALS such as Hostavin 3070 DISP.

Recommended dosage level of Hostavin 3326 DISP:                 1.0 - 3.0% (active additive on solid resin) 

Packaging and Handling
Delivery form

PE drums 25 kg
Pallet 300 kg (12 drums)

Hostavin 3326 DISP can be stored for at least three years from the date of shipping when kept cool and dry in the original sealed containers.
Storage temperatures above +40°C and below + 4°C should be avoided.
Hostavin 3326 DISP should always be well stirred prior to use, as a slight sedimentation might occur over time.

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