Hostavin® PR-31 P

Light stabilizer for coatings and plastic materials

Edition Number :
Edition Date :
January 01, 2014
Hostavin PR-31 is a hindered amine light stabilizer (HALS) with a UV absorber functionality. This HALS is characterized by its excellent efficiency and its ability to be fixed into the binder or the polymer matrix during UV exposure.


  • Highly effective Light Stabiliser with HALS and UV functions
  • Low migration photo graftable HALS
  • High mobility in melt phase


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Hostavin® PR-31 P

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Classification according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
    Acute aquatic toxicity, Cat. 1
    Chronic aquatic toxicity, Cat. 1
    Eye irritation, Cat. 2
For further information please refer to the Material Safety Data Sheet.

Physical Properties

Appearance  White powder
Melting point 120-125 °C
Solubility Data, at 20 °C (in g/l)  
Water Insoluble
Acetone 130
Butyl Acetate 120
Methoxypropanol 40
Xylene 280

Application Coatings

Hostavin PR-31 is recommended in all kind of coatings, air drying and stoving enamels. The concentration should not exceed 1.5% of active stabilizer on solid resins. 

Application Plastics

Hostavin PR-31 is recommended as a light stabilizer for polyolefins, styrene plastics, PVC and PBT

Packaging and Handling

Delivery form

Fibre drum 25 kg with PE-bag
Pallet 225 kg (9 drums)

Store in a cool and dry place.
Minimum shelf life is three years from the date of shipping when properly stored, in its original sealed containers.