Overview
BNX 169 is a non-discoloring primary antioxidant used to protect thermoplastics and adhesives against thermal oxidative degradation over a broad temperature range.
Chemistry
Chemical Name: 4,4′-Butylidenebis[2-(1,1-dimethylethyl)-5-methylphenol]
oxopropoxy]methyl]-1,3-propanediyl] ester
CAS Number: 85-60-9
Chemical Structure
Typical Properties
Product Form: Solid
Melting Range: 209 – 212oC
Molecular Weight: 382.6 g/mol
Applications
BNX 169 is a non-discoloring antioxidant ideal for a variety of thermoplastics and adhesives, showing outstanding performance in polyamides and tire cords. It is commonly used in polyurethane (PU), polyvinyl chloride (PVC), and acrylonitrile butadiene styrene (ABS) resins, as well as in styrene and polyurethane resins. Useful in polymers with unsaturated bonds. Its effectiveness extends to polyamides, nylons, and thermoplastic formulations, enhancing their stability and longevity against oxidative degradation.
Advantages
- Improves stability during high temperature processing and long term heat aging
- High thermal stability
- Non-staining and non-discoloring
- FDA clearances available
- Ideal for polymer with unsaturated bonds
Guidelines for Use
Suggested use levels range from 0.05% to 1.0% in plastics and adhesives. Combinations of BNX® 169 with secondary antioxidants such as phosphites and thioethers often show synergistic performance. BNX® 169 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 your Mayzo representative for specific recommendations for your application.
Storage
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.
Safety
Please consult the Safety Data Sheet (SDS) prior to handling or using this product.
FDA Regulations
BNX 169 has FDA clearances in food contact applications under 21 CFR §175.105 (adhesives) and 21 CFR §178.2010 (antioxidants and/or stabilizers for polymers). Please consult the referenced regulations for complete details, including restrictions of use.
