Tiangang® HS-944

Oligomeric Hindered Amine light stabilizer (HALS)
Chemical name Poly-{[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidinyl)imino]
CAS number 71878-19-8 / 70624-18-9 (US)
Structure Tiangang® HS-944
Tiangang® HS-944 is a highly effective radical scavenger that protects organic polymers against degradation caused by exposure to ultraviolet radiation. It is an oligomeric HALS characterized by extremely low volatility, high thermal stability and excellent compatibility with many substrates. Its oligomeric structure makes it particularly effective when used in thin section articles such as fiber and film. Tiangang® HS-944 is suited for use in polypropylene, LDPE, HDPE, XPE, EVA and PP blends with elastomers. Tiangang® HS-944 is also effective as an antioxidant for long term thermal stability.
Typical properties
  Appearance Molecular weight Specific gravity, g/ml@ 20°C Softening range
Flash point
HS-944FD Pale yellow pastilles 2000~3100 1.01 100 ~ 135 > 160
HS-944PW/LD Pale yellow powder
Solubility @ 20°C (g/100 ml solvent)
Tiangang® HS-944 Acetone Chloroform Hexane Benzene Methyl chloride Methanol Water
50 50 40 50 50 30 < 0.01
Safety & handling
Tiangang® HS-944 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.