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SpeedBlock 327

Technical Datasheet | Supplied by Lambson (Sartomer)
SpeedBlock 327 by Lambson (Sartomer) 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 ranges from 0.1-1.0% depending on applications.
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Product Type
Light Stabilizers / UV Absorbers > Benzotriazoles
Chemical Composition
2,4-di-tert-butyl-6-(5-chloro-2H-benzo-triazol)-phenol
CAS Number
3864-99-1

Compatiblity with other products

Find products that are predicted to be compatible with SpeedBlock 327.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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