BNX 2777 (40601-76-1 & 31570-04-4) is a primary and secondary antioxidant blend using an phenolic antioxidant (BNX 1790) and a phosphite type antioxidant (Benefos 1680). The primary antioxidant provides superior polymer stabilization and has excellent compatibility with polymeric HALS’s and UVA’s. The secondary antioxidant provides excellent heat stability and antioxidation, with good compatibility with resins and excellent extraction resistance.
Chemical Name: BNX 1790: 1,3,5-Tris (4-tert-butyl-3-hydroxy-2,6-dimethyl
Benefos 1680: Tris (2,4-di-tert-butylphenyl) phosphite
CAS Number: BNX 1790: 40601-76-1
Benefos 1680: 31570-04-4
BNX 1790: Benefos 1680:
Product Form: Solid
Melting Point: BNX 1790: 159-163oC
Benefos 1680: 183-187oC
Molecular Weight: BNX 1790: 699
Benefos 1680: 647
BNX 2777 is a convenient blend of both a primary and secondary antioxidant. This synergistic blend addresses a broad range of stabilization needs. The resistance to “gas fading” makes it ideal for use as a melt processing stabilizer in polyolefins such as polypropylene, polyethylene, polyolefin copolymers and blends, and TPO’s. BNX 2777 is also suitable for use in linear polyesters, high impact polystyrene, ABS, PVC, EPDM, nylon, acetals, and polyurethanes.
- Ease and convenience for compounding operations
- Compatible with polymeric HALS and UV absorbers
- Provides excellent melt stability in a wide range of polyolefins
- Low water carryover
- Resistant to “gas fading” discoloration and black speck formation
- FDA cleared for use in polyolefins and polystyrene
Guidelines for Use
Typical recommended loading concentrations in polyolefins and polystyrene range between 0.05% and 0.5%. BNX 2777 is also suitable for use in combination with light stabilizers, including hindered amine light stabilizers (HALS), UV absorbers, and benzoates. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use. Please contact Mayzo for specific recommendations.
This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.
Please consult the Safety Data Sheet (SDS) prior to handling or using this product.
The components of BNX 2777 have been FDA cleared for use in olefin polymers and polystyrene (including rubber-modified polystyrene) under 21 CFR §178.2010. Please contact your Mayzo representative for complete details, including restrictions of use.
Additional Product Details: Please view our BNX 2777 PDF