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Irganox® B 561 FF

Technical Datasheet | Supplied by BASF
Irganox® B 561 FF by BASF is a processing and long-term thermal stabilizer system designed for use with polyolefins and olefin-copolymers by BASF. It is basically a blend of 80% Irgafos® 168 and 20% Irganox® 1010. Maintains original melt flow and offers low color formation. Irgafos® 168, an organic phosphite of low volatility and particularly resistant to hydrolysis, protects the polymers which are prone to oxidation. Irganox® 1010, a hindered phenolic antioxidant, contributes synergistically to polymer stabilization during processing and provides long-term thermal stability by preventing thermo-oxidative degradation. Irganox® B 561 FF is compatible with polyethylene, polypropylene, polybutene and ethylene-vinyl acetate copolymers. Also used with other polymers such as engineering plastics, styrene homo- and copolymers, polyurethanes and elastomers. Its recommended dosage level in polyolefins is 0.1-0.25%.
Product Type
  • Antioxidants > Blends
  • Heat Stabilizers
  • Processing Aids > Polymeric Processing Aids
Chemical Composition
Blend of 20% pentaerythritol tetrakis[3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionate] and 80% tris(2,4-ditert-butylphenyl)phosphite
Physical Form
Granules, Free-flowing
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