Tiangang® UV-328

High-efficiency UV Absorber · UV-328

highly efficient UV absorber for a varie

Key Advantages

a) Efficient UV absorption
Efficient UV absorption
b) Good light stability
Good light stability
c) Low volatility
Low volatility
d) Good resin compatibility
Good resin compatibility

Technical Data

Chemical name 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol
CAS number 25973-55-1

Structure
Molecular Weight 351.5 g/mol
Description Tiangang® UV-328 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-328 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-328 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.
　 Appearance Melting range
oC		 Volatility
2% weight loss, oC		 Flash point
oC
Tiangang® UV-328 Slightly yellow powder 80 ~ 88 202 229
Tiangang® UV-328 Acetone Chloroform Cyclohexane Ethyl acetate n-Hexane Methanol Water
6 44 15 16 16 0.4 < 0.01
Tiangang® UV-328 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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