Light Stabilizer 622

Name: Light Stabilizer 622
Chemical name: Poly-(N-Beta-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxy-piperidyl succinate)

Synonyms:Tinuvin 622(Ciba), Uvinul 5062 H(BASF), Lowilite 622 (Great Lakes),High Molecular Weight Hindered Amine Light Stabilizer　(HALS)
Characterization:

Light Stabilizer 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 hindered amine light stabilizer 622 is effective as antioxidant and contributes significantly to the long term heat stability of polyolefins and tackifier resins.
CAS NO: 65447-77-0
Molecular weight: Mn = 3100 - 4000
Structure: Light stabilizer 622

Applications:
Light Stabilizer 622 areas of application include polyolefins (PP, PE), olefin copolymers such as EVA as well as blends of polypropylene with elastomers.
In addition lowilite 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 light stabilizers 622 with UV absorbers.
Handling & safety:

In accordance with good industrial practice, handle care and prevent contamination of the environment. Avoid dust formation and ignition sources.
Guidelines for use:
UV stabilization of HDPE, LLDPE, LDPE and PP 0.15-0.5%
Films UV stabilization of LDPE and LLDPE 0.1-1.2%
Tapes Ustabilization of HDPE and PP 0.2-0.8%
Fibers UV stabilization of PP fibers 0.1-1.0%
Specifications:

Appearance	White to slightly yellow powder, odorless
WPH-value (1% suspension in water 20~25℃)	6.3
Melting / freezing temperature	50~70℃
Boiling point / range	Not applicable
Ash content	≤0.05%
Density (20℃) ca	1.22g/cm3
Flash point	>250℃
Ignition temperature	370℃
Water solubility (20℃) ca	1.6mg/L
Vapor pressure (20℃)	2.5 E-6 Pa
Partition coefficient (Log Pow, 20~25℃)	5.2