Light stabilizer 622

CAS No. [65447-77-0]
Chemical name: Poly-(N- b -hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxy
-piperidyl succinate)   
Molecular formula: H C15H25O4N nOCH3
Molecular weight:  > 3000
       Appearance: white or light yellow granular
       Volatile(105°C, 2hr): 0.5% max.
       Transmittance: 425nm  97% min.
       500nm  99% min.
       Ash: 0.1% max.
Packing: 25kg fibre drum
       Hindered amine light stabilizer. It is used in light aging inhibition of polyethylene ,polypropylene,polyurethane, metaformaldehyde, polyamine and polyester,also in ABS and engineering plastics.
Molecular structure: