Tiangang® UV-A

Light Stabilizer for Coatings · UV-A

UV-A is a liquid UV absorber belonging t

Key Advantages

a) Liquid easy dispersion
Liquid easy dispersion
b) Coating weathering protection
Coating weathering protection
c) Prevents cracking & discoloration
Prevents cracking & discoloration
d) Long-lasting stability
Long-lasting stability

Technical Data

Chemical name Mixture of b-[3-(2-H-Benzotriazole-2-yl)-4-hydroxy-5-tert.butylphenyl]-propionic acidpoly(ethylene glycol) 300-ester, and Bis{b-[3-(2-H-Benzotriazole-2-yl)-4-hydroxy-5-tert.butylphenyl]-propionic acid}-poly(ethylene glycol) 300-ester
CAS number 104810-48-2; 104810-47-1; 25322-68-3
Structure Tiangang® UV-A
Molecular Weight 637 (monomer), 975 (dimer)
Description
 
　		 UV-A is a liquid UV absorber belonging to the hydroxyphenylbenzotriazole family. It exhibits a broad UV absorption, with high temperature and extraction resistance, making it particularly suitable for improving light stability of coatings with high durability demands, such as industrial coating and automotive coatings. For light sensitive substrates, such as wood and plastics, UV-A also provides efficient protection. The product is miscible with most common solvents. In waterborne system, it can be dispersed by dilution with a water miscible solvent such as butylcarbitol. When used together with a liquid hindered amine light stabilizer (HALS), such as HS-508 or HS-112, strong synergistic effects are observed.
Tiangang® UV-A Appearance Dynamic Viscosity
(@ 20°C, mPa*s)		 Density
(@ 20°C, g/cm3)		 Miscibility
(g/100g solution, @ 20°C)
Yellow to light amber viscous liquid 7,400 1.17 >50 in most commonly used paint solvents;
<0.01 in water
Tiangang® UV-A 1.0% - 3.0%  UV-A, and 0.5 – 2.0%   HS-112 or HS-508
Tiangang® UV-A 25kg, 200kg plastic drums
Tiangang® UV-A 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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Certifications

  • National High-Tech Enterprise
  • Vice Chairman Unit, China Plastics Processing Industry Association (CPPIA)
  • Vice Chairman Unit, Agricultural Plastics Branch, China Agricultural Plastics Application Technology Society
  • Member, Ageing Methods Subcommittee, National Technical Committee on Plastics (SAC/TC15/CS5)
  • Member, Society of the Plastics Industry (SPI), USA

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