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Adhesives Ingredients
The material selection platform
Adhesives Ingredients
by SpecialChem
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SpeedBlock 327

Technical Datasheet | Supplied by Lambson
HSP Distance with Chiguard® 5411: 0.8
SpeedBlock 327 by Lambson is a 2,4-di-tert-butyl-6-(5-chloro-2H-benzo-triazol)-phenol. Acts as a UV absorber. It has absorption bands in the 200-230nm & 300-360nm ranges. It has very low transmission of long-wavelength UV radiation. Excellent stability to heat as it has low volatility at high processing temperatures. Compatible with styrene homo- and co-polymers, acrylics, unsaturated polyester, polyurethane, polyvinylbutyral, polyvinylchloride, polyolefins, polyacetals and elastomers. Can be used alone or with additives such as hindered light stabilisers and antioxidants. Used in adhesives. Typical addition level of SpeedBlock 327 by Lambson ranges from 0.1-1.0% depending on applications.
Product Type
Light Stabilizers / UV Absorbers > Benzotriazoles
Chemical Composition
CAS Number
SpecialChem additionnal informations based on CAS Number : 3864-99-1

Hansen Solubility Parameters

[18.5, 4.3, 4.2]
[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 SpeedBlock 327. A practical determination of these HSP values would provide higher certainty. Learn More.

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