SpeedBlock 328 by Lambson (Sartomer) is a 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol. Acts as a UV absorber. 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 328 ranges from 0.1-1.0% depending on applications.
Product family:
Chemical family:
Product Type:
| CAS Number | Visible After Login |
| Chemical Composition: | Visible After Login |
| Bio Based content | Visible After Login |
| Color | Visible After Login |
| Appearance | Visible After Login |
Compliance
| Certifications & Compliance | Visible After Login |
Availability
Product Status:Visible After Login
SpeedBlock 328 properties
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Ash Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Assay | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Loss on drying | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Molecular Weight, Mw | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Transmittance, Visible | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Transmittance, Visible | 0.0 Visible After Login | Visible After Login | Visible After Login |