622 is an oligomeric, stereo-hindered amine light stabilizer. It is widely used in polyolefins, olefin copolymers, such as EVA and polypropylene and elastic blends. In addition, 622 is very effective for polyurethane, polyacetal, polyamide, especially nylon 11 and nylon 12, a base polyester elastomer.
In pigment systems, the effect of 622 exceeds that of UV absorbers and nickel stabilizers. 622 can produce synergistic effects when mixed with other UV absorber series. Since the average molecular weight of 622 oligomeric structure is about 3500, it is very suitable for products requiring low volatility and low migration. In addition, 622 is an effective antioxidant, so it has long-term thermal stability for polyolefins and resins.
622 has the following excellent properties:
- Does not affect the color and transparency of the product
- It has high compatibility with the above plastic products
- Easy to disperse
- Low water content in film and flat production
- Widely allowed for food packaging
622 will be damaged by sulfur-containing or halogen-containing substances when used. For example, some stabilizers, pesticides, flame retardants, etc. In order to evaluate and confirm the impact on the plastic properties (such as weldability, printability) of certain special technical requirements of the polymer, we recommend a small test first.
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cas No : |
70198-29-7 |
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Appearance： |
White, light yellow powder (low dust) |
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Particle diameter： |
>1.6mm |
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Softening temperature： |
55-70°C |
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density： |
1.18g/cm3 |
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Specific Heat：
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1390 J/kg°C (20°C) 2170 J/kg°C (100°C) |
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Viscosity： |
290(150°C) |
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Solubility：(20℃) |
(Weight ratio, %) |
|
Hexane |
<0.01 |
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Toluene |
15 |
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acetone |
4 |
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Ethyl acetate |
3 |
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Chloroform |
>40 |
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Dichloromethane |
>40 |
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Methanol |
0.05 |
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Water |
<0.01 |
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