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Poly{[(1,1,3,3-tetramethylbutyl )amino)-1,3,5-triazine-2,4-diyl}[2,2,6,6-tetramethyl -4-piperidyl]imino]-1,6-hexanediyl[(2,2,6,-tetramethyl-4-piperidyl)imino]]}

  • Siwin-LS944
  • Siwin
  • Siwin-LS944
  • 70624-18-9


Light stabilizer

Light stabilizer 944 is a polymeric high molecular weight hindered amine light stabilizer, with low volatility, migration resistance and high temperature resistance. It has excellent synergetic effect with antioxidants and UV absorbers.

Typical Physical Properties  

Chemical Name:Poly{[(1,1,3,3-tetramethylbutyl )amino)-1,3,5-triazine-2,4-diyl}[2,2,6,6-tetramethyl


Cas No.:70624-18-9


White or light yellow solid

Light transmittance

≥93% (425nm) ≥95% (450nm)

Molecular weight

2000-3100 g/mol

Melting point



1.05 g/cm3






The product is suitable for various polymer materials such as polyolefin materials, cross-linked polyethylene, olefin copolymers, PS, PA, PU, flexible PVC etc., especially thin products and silk fabrics.

Packaging and Storage

Package: 25kg carton inner with plastic bag or as customer`s requirement.

Storage: Keep container tightly closed in a dry and well-ventilated place.

The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling.

All safety information is provided in the Safety Data Sheet.

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