Hydroxyphenylbenzotriazole. Used as a UV absorber for ambient and low temperature cured systems, such as air drying alkyd based systems for automotive and industrial coatings and trade sale paints such as wood stains or do-it-yourself paints. Tinuvin® 328 by BASF is recommended for the stabilization of styrene homo- and copolymers, acrylic polymers, unsaturated polyesters, polyvinylchloride, polyolefins, polyurethanes, polyacetals, polyvinyl butyral and elastomers.
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Additional Information
CAS number
25973-55-1
Chemical nature
2-(2H-benzotriazol-2-yl)-4,6-ditertphenylphenol
Applications
articles
films
sheets
fibers during outdoor weathering
adhesives
automotive and industrial coatings
trade sale paints such as wood stains or do-it-yourself paints
Advantages
very good light stability, extended UV absorption, efficient protection
Handling
Can be used in combination with a light stabilizer of the sterically hindered amine or aminoether class (HALS) to give superior protection against gloss reduction, cracking, blistering, delamination and color change.
