Overview
BNX® 4120 is a high molecular weight, sulfur-containing antioxidant designed for polyolefins and engineered thermoplastics, known for its exceptional thermal stability and compatibility with various elastomers.
Chemistry
Chemical Name: 2,2-Bis[[3-(dodecylthio)-1-oxopropoxy]methyl]propane-1,3-diyl
bis[3-(dodecylthio)propionate]
CAS Number: 29598-76-3
Chemical Structure
Typical Properties
Product Form: Solid
Melting Range: 47 – 52oC
Molecular Weight: 1161.9 g/mol
Applications
BNX® 4120 is extensively utilized in the rubber and plastic industries, serving as an indispensable antioxidant and antiozonant. It finds primary applications in products demanding high thermal stability and longevity, such as tires, belts, hoses, electric wires, high-voltage cables, and distribution cables’ jacketing. This is in part due to its high molecular weight which affords low volatility and minimal leaching. Its effectiveness is not limited to rubber; it is also beneficial in a wide range of polymers including PP, HDPE, LDPE, LLDPE, PC-ABS, and various engineering thermoplastics (PBT, PET). The product is especially valuable in high-temperature environments and applications requiring long service lives, where it helps in maintaining the integrity and aesthetic qualities of the materials. When used with phenolic antioxidants BNX 4120 typically outperforms BNX® DLTDP and BNX® DSTDP.
Advantages
- Provides excellent thermal and oxidation stability for long-term durability
- Enhances performance and longevity when paired with phenolic antioxidants
- Features low volatility and minimal odor, improving user and environmental experience
- Minimal migration and low odor levels
Guidelines for Use
Suggested use levels in plastics and adhesives range from 0.05 to 1% by weight. Combinations of BNX® 4120 with primary antioxidants often provide synergistic performance. BNX® 4120 is also suitable for use in combination with phosphite processing stabilizers and light stabilizers (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. Extended storage at elevated temperatures or exposure to direct heat could decrease product shelf life.
Safety
Please consult the Safety Data Sheet (SDS) prior to handling or using this product.
FDA Regulations
BNX® 4120 has not been cleared by the FDA for use in food contact applications.
