B 225 – a processing and long-term thermal stabilizer system – is a synergistic blend of Irgafos 168 and 1010.
B 225 is used in polyolefins and olefin-copolymers such as polyethylene, polypropylene, polybutene and ethylene-vinylacetate copolymers. The blend can also be used in other polymers such as engineering plastics, styrene homo-and copolymers, polyurethanes, elastomers, adhesives, and other organic substrates. B 225 can be used in combination with light stabilizers of the Uvinul, and Chimassorb range.
B 225 is a convenient blend addressing a range of stabilization needs. The relatively high phenolic antioxidant content of B 225 addresses applications requiring more long-term thermal stability. In the recommended applications B 225 provides significant benefits, such as
• long-term thermal stability
• maintenance of original melt flow
• low color formation
Irgafos 168 – an organophosphite of low volatility and particularly resistance to hydrolysis – protects during processing organic polymers which are prone to oxidation. 1010 – a hindered phenolic antioxidant - contributes synergistically to the stabilization of the polymer during processing and provides long-term thermal stability by preventing thermo-oxidative degradation during service life. Performance can be improved in synergistic combinations with other BASF additives (e.g. thioethers). Blends of 1010 and Irgafos 168 with Hydroxylamine FS042 are particularly effective.