UV Absorber UV-326
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Molecular Structure
Detailed Description
Chemical name : 2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzortriazole
Introduction : UV-326 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. UV-326 is especially suited for polyolefins and cold cured polyesters. It protects polymers from UV radiation helping to preserve the original appearance and physical integrity, especially for polyolefins and polyester resins.
Empirical Formula : C17H18N30Cl
CAS NO : 3896-11-5
Structure :
Physical Properties
Molecular Weight : 315.8
Appearance : slight yellow powder
Melting Range : 138-141 °C
Flashpoint : 229 °C
Specific Gravity(20 °C) : 0.37g/cm3
Transmissirity:
460nm≥ 97 %
500nm≥ 98%
Applications
1. Unsaturated Polyester : 0.2-0.5wt% based on polymer weight
2.PVC:
Rigid PVC : 0.2-0.5wt% based on polymer weight
Plasticized PVC : 0.1-0.3wt% based on polymer weight
3.Polyurethane : 0.2-1.0wt% based on polymer weight
4.Polyamide : 0.2-0.5wt% based on polymer weight
Packing: 25kg paper drum or carton
- UV Absorber UV-326
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