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.

This product is of low volatility and is particularly resistant to hydrolysis. It protects polymers that 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.

Applications

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.

This product is recommended for applications such as:

• Powder coatings
• Solvent-based coating
• Hot-melt adhesives

Features & Benefits

• Low volatility
• Resistant to hydrolysis
• Protects polymers prone to oxidation during processing
• Prevents discoloration

Properties

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