HOSTAVIN VSU POWDER

Product Details

Hostavin VSU is an Oxalanilide UV absorber, a low volatile polar substance with good heat stability. It is resistant to discoloration with metal ions, e.g. from polymerisation catalyst residues, fillers or from contact surfaces. Hostavin VSU absorbs the UV light especially in the UV-B range, and is therefore a stabilizer of choice for combinations with optical brighteners and for UV curing systems.
Benefits

• Excellent UV protection
• No discolouration
• Minimal sensitivity to side reactions ( resistance to coloration in presence of metal ions traces )\

Physical Properties

Appearance	White powder
Melting Range	125 - 130 °C
Solubility Data, at 20 °C (in g/l)
Water	Insoluble
Acetone	40
Toluene	60
Xylene	30
Ethyl Acetate	40

Typical Applications

Coatings

Hostavin VSU can be used in solventborne coatings and general industrial coatings to provide standard UV stabilization performances. In particular, it is recommended for UV cured systems. To ensure optimal stabilization, clear coats require not only UV absorber but also HALS. Depending on the binder, a traditional HALS, e.g. Hostavin 3055 or Hostavin 3065, or a non-basic HALS, e.g. Hostavin 3058, should be used in combination with Hostavin VSU.

Plastics

Hostavin VSU is recommended as a UV absorber especially for use in polyamides, polycarbonates, PVC, acrylates, alkyd/melamines, PU, and polyesters.