Light Stabilizer 944 (HS-944LD/FD)

Beijing Tiangang Auxiliary Co., Ltd. is a national-level high-tech enterprise specializing in the R&D and production of high-performance polymer additives and the manufacture of Light Stabilizer 944. Its predecessor was the "Beijing Chaoyang District Huashan Auxiliary Factory," founded in 1991, and it is one of the earliest enterprises in China dedicated to the development and production of anti-aging functional materials. Tiangang's products enjoy a high reputation in both domestic and international markets, and hold a leading position in key markets. They are exported to more than 50 major countries and regions in Europe, North America, and Asia, and are selected by many internationally renowned enterprises.

Product Name	Hindered Amine Light Stabilizer HS-944LD/FD (Granulated) — Light Stabilizer 944
Product Description	Light Stabilizer 944 is a polymeric high-molecular-weight hindered amine light stabilizer for plastic products. It can be used in polyolefin plastics (such as PP, PE), olefin copolymers (such as EVA and blends of propylene with rubber), etc. It shows outstanding efficacy in cross-linked polyethylene. In addition to polyolefin plastics, it can also be used in polyphenylene ether composites (PPE), polyacetal (polyacetals), polyamides, polyurethanes, rigid and flexible PVC and PVC blends, etc. Furthermore, Light Stabilizer 944 also has good efficacy for styrenics, rubber, and adhesives. Used together with UV absorbers, Light Stabilizer 944 shows a synergistic effect. Due to its special polymeric structure, its average molecular weight can reach 3000; it can be used in systems requiring low volatility and minimal migration, and is especially suitable for films and fibers. Light Stabilizer 944 has an antioxidant effect and also provides long-term thermal stability to polymers.
Chemical Name	Poly-{[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]}
English Name	Poly-{[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]}
CAS NO.	70624-18-9
Molecular Formula	[C35H64N8]n (n=4-5)
Chemical Structure
Physical Properties	Melting range: 100 °C –135 °C Bulk density: 548–646 g/L Onset of weight-loss temperature: > 270 °C Solubility: Soluble in acetone, toluene, xylene, benzene, ethyl acetate, hexane, chloroform and other organic solvents; slightly soluble in methanol; insoluble in water.
Main Uses	This product is a polymeric hindered amine light stabilizer. When added to polyethylene, polypropylene, polyvinyl chloride and other polyolefin products, as well as nylon, polyacetal, polyester and other products, it delivers excellent light stabilization. This product has good compatibility and extraction resistance with polymers, and different hindered amine light stabilizers used together show a good synergistic effect. It is one of the more advanced and widely used hindered amine light stabilizers at home and abroad.
Storage	This product is highly hygroscopic and must be stored sealed, dry, and protected from light.
Packaging	Fiber drum with inner plastic liner, 25 kg/drum, with dedicated lead seal. Packaging in different specifications can also be provided according to customer needs.