Light Stabilizer 770 

 First, the chemical name: Bis (2,2,6,6 - tetramethyl piperidine-yl) sebacate ester 
 Molecular formula: C28H52O4N2 
 MW: 480.74 
 Second, the key indicators 
 Appearance: white crystalline powder 
 Melting point: 80-86 ℃ 
 Content: ≥ 99% 
 Ash: ≤ 0.1% 
 Loss on drying: ≤ 0.5% 
 Transmittance: 425nm: 97% min 
 (10 g / 100 ml toluene) 500nm: 97% min 
 Third, the application notes: 
 This product is hindered amine light stabilizer, light stabilizer is better than the general UV absorbers, and antioxidants can improve the heat resistance and used to further improve the aging resistance, and the polymer has good compatibility, thermal stability of excellent, can be used for high-temperature processing, the polymer provides maximum protection, to reduce the ultraviolet radiation damage, the product tasteless, the odor had no effect on the original polymer on the substrate had no effect on the original color, and other UV absorber and use a synergistic effect. As a light stabilizer, the product is suitable for polyethylene, polystyrene, polypropylene, ABS resin, polyester and polyurethane. 
 Fourth, adding amount: 
 By 0.1-0.5% of total 
 V, storage and packaging specifications: 
 25 kg / barrel. UV absorbent UV-531 non-toxic, non-flammable, non-explosive, non-corrosive, good storage stability.