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Speedblock 328

Technical Datasheet | Supplied by Lambson (Sartomer)
Speedblock 328 by Lambson (Sartomer) is 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol. Acts as an UV absorber. Ican be used alone or with additives such as hindered light stabilisers and antioxidants. Compatible with styrene homo- and co-polymers, acrylic polymers, unsaturated polyester, polyurethane, polyvinylbutyral, polyvinylchloride, polyolefins, polyacetals and elastomers. Recommended dosage is 0.1-1.0%, depending on the substrate, processing conditions and applications. Speedblock 328 has a shelf life of 2 years.
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Product Type
Light Stabilizers / UV Absorbers > Benzotriazoles
Chemical Composition
2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol
CAS Number
25973-55-1

Compatiblity with other products

Find products that are predicted to be compatible with Speedblock 328.

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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