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Tiangang® UV-329

High Temperature Benzotriazole UV Absorber
 

Chemical name 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol
CAS number 3147-75-9
 
Structure
　
Molecular Weight 323 g/mol
Description Tiangang® UV-329 is a highly efficient UV absorber for a variety of plastics and other organic substrates, including polyolefins, and most engineering plastics, as well as PVC, PMMA, PU, PET, POM, polyesters, and various elastomers, and adhesives. Tiangang® UV-329 features strong UV absorption, low initial color, excellent compatibility, and moderately low volatility. When added to the substrates, it protects the substrate from UV degradation, preserving the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor use.
 
Dosage level of Tiangang® UV-329 is between 0.10 and 1.0%, depending on substrate and performance requirements. When used in combination with Tiangang® series of Hindered Amine light stabilizers (HALS), synergistic performance is often observed.

 
Typical properties

　 Appearance Melting range
oC		 Volatility
2% weight loss, oC		 Flash point
oC
Tiangang® UV-329 Slightly yellow powder 103 ~ 105 200 229

 
Solubility @ 20oC (g/100 ml solvent)

Tiangang® UV-329 Acetone Chloroform Cyclohexane Ethyl acetate n-Hexane Methanol Water
9 37 15 15 6 0.6 < 0.01

 
Safety & handling

Tiangang® UV-329 The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling. Store the product in a cool, dry, well-ventilated area away from incompatible materials.

 

Disclaimer
　		The information supplied is presented in good faith and has been derived from sources believed to be reliable. Since conditions of use are beyond our control, all risks are assumed by the user. No representation is expressed or implied, and nothing herein shall be construed as permission or recommendation to practice a patented invention without license.

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