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Coatings Ingredients
The material selection platform
Coatings Ingredients
by SpecialChem
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Chimassorb® 81

Technical Datasheet | Supplied by BASF
Chimassorb® 81 by BASF is a low yellowing 2-hydroxy-benzophenone. Acts as a UV absorber. Improves failure of coatings resulting from exposure to sunlight including discoloration, cracking and loss of adhesion. Its performance can be improved in outdoor applications by combining with a hindered amine light stabilizer (HALS) such as Tinuvin® 292 or Tinuvin® 123. Chimassorb® 81 is designed for general industrial coatings. Recommended dosage level is 1-3% for interior and exterior clear coatings.
Product Type
Light Stabilizers / UV Absorbers > Benzophenones
Chemical Composition
CAS Number
SpecialChem additionnal informations based on CAS Number : 1843-05-6

Hansen Solubility Parameters

[18.6, 9.2, 3.9]
[δD - Dispersion force interactions, δP - Polar force interactions, δH - Hydrogen bond force interactions]

Please note, these HSP values are estimations. It is based upon the “like seeks like” principle. It splits an ingredients interactions into three parameters; δD (Dispersion force interactions), δP (Polar forces interactions) and δH (Hydrogen bond force interactions). Hansen Solubility Parameters can help you find a wide range of products that are predicted to be compatible with Chimassorb® 81. A practical determination of these HSP values would provide higher certainty. Learn More.

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