TINUVIN 328 is a UV absorber of the hydroxyphenyl-benzotriazole class designed for coatings. Because of its extended UV absorption, TINUVIN® 328 provides efficient protection to coatings and light sensitive substrates.

Applications for TINUVIN 328

TINUVIN 328 is recommended for applications such as:

• Automotive coatings
• Industrial coatings
• Trade sale paints such as wood stains or do-it-yourself paints.

TINUVIN® 328 may be used in combination with a light stabilizer of the sterically hindered amine or aminoether class (HALS) such as TINUVIN 292, TINUVIN 123, or TINUVIN 144. These combinations give coatings superior protection against gloss reduction, cracking, blistering, delamination, and color change. TINUVIN® 328 is only recommended for ambient and low temperature cured systems, i.e. air-drying alkyd-based systems.

The amount of TINUVIN® 328 required for optimum performance should be determined in trials covering a concentration range.

Features & Benefits

• Hydroxyphenyl-benzotriazole UVA with excellent spectral coverage in the UV A & B regions
• Good photopermanence
• Improves exterior durability of ambient and low temperature cured coatings

Properties

Appearance………………….Slightly yellow powder
Molecular Weight…………351.5