Overview
BNX® 2246 is a primary antioxidant used to protect adhesives, plastics, and elastomers against thermal oxidative degradation over a broad temperature range.
Chemistry
Chemical Name: 2,2′-Methylenebis(4-methyl-6-tert-butylphenol)
CAS Number: 119-47-1
Chemical Structure
Typical Properties
Product Form: Solid
Melting Range: 120 – 132oC
Molecular Weight: 340.5 g/mol
Applications
BNX® 2246 is is a highly effective antioxidant and process stabilizer in hot-melt adhesives, natural rubber adhesives, ABS, polyolefins (polypropylene, polyethylene, EVA), polyacetals, and elastomers. It is also used as an oxidation inhibitor for fats, oils and paraffin wax.
Advantages
- Improves stability during high temperature processing and long term heat aging
- Synergistic performance with secondary antioxidants (phosphites, thioethers)
- Non-interacting with processing or vulcanization in cross-linked elastomers
- Compatible with a wide variety of systems
- Low migration effects
- FDA compliant
Guidelines for Use
Suggested use levels in plastics and adhesives range from 0.05 to 0.5%. Combinations of BNX® 2246 with other antioxidants such as phosphites and thioethers often show synergistic performance. BNX® 2246 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® 2246 has been cleared for use in food contact applications under 21 CFR §175.105 (adhesives), 21 CFR §177.2600 (rubber articles intended for repeat use), and 21 CFR §178.2010 (antioxidants and/or stabilizers for polymers). Please consult the referenced regulations for complete details, including restrictions of use.
