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UV-622

Identification

Synonyms: Poly(4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol-alt-1,4-butanedioic acid)
Molecular Formula: (C15H29NO6)n
CAS Number: 65447-77-0

 

Properties

Melting Point: >350

 

Specification

Appearance: White or pale yellow granular powder
Residue on ignition: 0.1% max
Volatiles: 0.5% max (105°C, 2hrs)
Molecular weight: >3000 (contrast with polystyrene)
Transmittance: 97.0% min (425nm); 99.0% min (500nm)
 

 

Storage and Packing

Storage: store in dry place under 50°C avoiding light.
Packing: 25kgs net cardboard drum
 

 

Applications

Oligomeric hindered amine UV light stabilize. More effective stabilizer than UV absorbers in pigmented systems. Works synergistically with other HALS UV absorbers.
Equivalent: Tinuvin 622
 

Safety Infromation