Characterization TINUVIN 622 is the light stabilizer of choice for all applications calling for low volatility and minimal
migration, because of its oligomeric structure with high molecular weight. Furthermore TINUVIN
622 is effective as antioxidant and contributes significantly to the long- term heat stability of
polyolefins and tackifier resins.
Chemical name Butanedioic acid, dimethylester, polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol
CAS number 65447-77-0
Structure TINUVIN 622
O
n
N CH2 CH2 O C CH2
O
CH2 C
O
Molecular weight Mn=3100-4000
Applications TINUVIN 622 areas of application include polyolefins (PP, PE), olefin copolymers such as EVA as well
as blends of polypropylene with elastomers.
In addition TINUVIN 622 is highly effective in polyacetals, polyamides and polyurethane applications.
Features/benefits The effectiveness of TINUVIN 622 surpasses significantly that of UV absorbers, particularly in
pigmented systems. Combinations of TINUVIN 622 with UV absorbers, e.g. TINUVIN range or other
HALS, e.g. CHIMASSORB range in many cases result in synergistic effects. Typical examples are
TINUVIN 783 and TINUVIN 111
Code: Appearance:
TINUVIN 622 FB colorless to light yellowish granules
Product forms
TINUVIN 622 LD coarse, white to slightly yellow powder
