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UV-622(Oligomeric Hindered Amine Light Stabilizer)
Chemical name: Butanedioic acid, dimethylester, polymer with 4-hydroxy-2, 2, 6, 6-tetramethyl-1-piperidine ethanol
Introduction: UV-622 is the light stabilizer of choice for all applications calling for low volatility and minimal migration, imparting good light stability for plastics and other organic polymers. UV-622 is highly effective in polyacetals, polyamides and polyurethane applications.
Empirical Formula:
CAS NO: 65447-77-0
Structure:
Physical Properties
Molecular Weight: M n =3100-4000
Appearance: White to slighty yellow powder
Melting Range: 50-70 ° C
Flashpoint: >250 ° C
Specific Gravity(20 ° C): 1.22 g/cm3
Volatility Pure substance; TGA, heating rate 20 ° C /min in air
Applications
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 YS 622 is effective as antioxidant and contributes significantly to the long term heat stability of polyolefins and tackifier resins. 622 areas of application include polyolefins (PP, PE), olefin copolymers such as EVA as well as blends of polypropylene with elastomers.
In addition 622 is highly effective in polyacetals, polyamides and polyurethane applications.
Solvent |
Solubility |
Acetone |
4% |
Chloroform |
40% |
Ethanole |
0.08% |
Ethyl Acetate |
3.0% |
n-Hexane |
<0.01% |
Methanol |
0.05% |
Methylene Chloride |
40% |
Toluene |
15% |
Water |
1.6mg/L |
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