ULTRANOX™ 627AV is a high performance solid phosphite antioxidant that improves color stability and reduces polymer degradation during compounding, fabrication, and end use in a variety of resins. Similar to ULTRANOX™ 626 but in a free-flowing form with an inorganic neutralizer for improved handling characteristics.
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ULTRANOX™ 627A is a solid organophosphite antioxidant that improves gas fading performance and color stability during compounding, fabrication, and end use. It delivers high performance at low loading rates, making this a cost effective addition to polymer formulas. ULTRANOX™ 627A synergizes with benzophenone and benzotriazole light stabilizers.
Appearance: White granule
Melting Point: 160-175 °C
Acid Number: 1.0 mg KOH/g
Free 2,4-di-t-butylphenol Content: 1.5%
Phosphorus Content: 9.1%
DHT-4A Content: 6.0-8.0%
Molecular Weight: 604 g/mol
Flash Point (Closed Cup): > 100 °C
Bulk Density @ 20 °C: 0.51 g/ml
Particle Size Distribution: 95% greater than 60 mesh
Primary Chemistry: Bis (2,4-di-t-butylphenyl) Pentraerythritol Disphosphite
Food contact approvals
Excellent color stability during compounding, fabrication and end use
Improved gas fading performance
Synergizes with benzophenone and benzotriazole light stabilizers
High performance at low load rates
Non-dusting
Color stability issues with the use of phosphite antioxidants in thermoplastics
High loading rate and cost efficiency issues of phosphite antioxidants
Compatibility and synergy issues of antioxidants with benzophenone and benzotriazole light stabilizers
Handling difficulties with the use of powder form phosphite antioxidants
Polyolefins, engineering thermoplastics, styrenics
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