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Irganox® B 561 is a blend of 20 % pentaerythritol tetrakis[3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionate] and 80% tris(2,4-ditert-butylphenyl)phosphite. It is basically a blend of 80% IRGAFOX 168 and 20% IRGANOX 1010. Acts as a synergistic processing and long-term thermal stabilizer.
Details
Recommended for
Applications
Producer
Supplier
Advantages
- Maintains original melt flow
- low color formation
- long-term-thermal stability
- low volatility
- particularly resistant to hydrolysis
- protects the polymers which are prone to oxidation
- contributes synergistically to polymer stabilization during processing
- long-term thermal stability by preventing thermo-oxidative degradation
Handling
It is approved for food contact applications.
Its recommended dosage rate is 0.1- 0.25%.
compatible with polyolefin and olefin-copolymers such as polyethylene, polypropylene, polybutene and ethylene-vinyl acetate copolymers, engineering plastics, styrene homo- and copolymers, polyurethanes and elastomers
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Appearance Properties | |||
| Physical state | powder | ||
| Appearance | |||
| Physical Properties | |||
| Molecular weight | 1178 | g/mol | IRGANOX 1010 |
| Molecular weight | 646.9 | g/mol | IRGAFOS 168 |
| Bulk density | 0.53 - 0.63 | g/ml | |
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