Irgafos 168 is a hydrolytically stable phosphite processing stabilizer. As a secondary antioxidant, Irgafos 168 reacts during processing with hydroperoxides formed by autoxidation of polymers preventing process induced degradation and extending the performance of primary antioxidants.
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Technical data sheet (TDS)
Technical product information
Features and Benefits
Irgafos 168 is an organophosphite of low volatility and is particularly resistant to hydrolysis. It protects polymers which are prone to oxidation, during the processing steps (compounding/pelletizing, fabrication and recycling) from molecular weight change (by chain scission or crosslinking) and prevents discoloration. Irgafos 168 performs best when combined with other BASF antioxidants. Blends of Irgafos 168 with hindered phenols of the Irganox® range (Irganox B-blends) are particularly effective. The hindered phenols additionally provide storage stability and give the polymer long term protection against thermooxidative degradation. Irgafos 168 comprised in phenol free systems with other appropriate BASF stabilizers addresses specific stabilization requirements.
The application range of Irgafos 168 – synergistically combined with other BASF anti-oxidants – comprises polyolefins and olefin-copolymers such as polyethylene (e. g. HDPE, LLDPE), polypropylene, polybutene and ethylenevinylacetate copolymers as well as polycarbonates and polyamides. The blends can also be used in polyesters, styrene homo- and copolymers, adhesives and natural and synthetic tackifier resins, elastomers such as BR, SEBS, SBS, and other organic substrates. Irgafos 168 blends can be used in combination with light stabilizers of the Uvinul®, Tinuvin® and Chimassorb® range.
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