Antioxidant 1098, identified by its Chemical Abstracts Service (CAS) Registry Number 23128-74-7, stands as a cornerstone high-performance additive within the polymer industry. This compound, known chemically as 3,3'-Bis(3,5-di-tert-butyl-4-hydroxyphenyl)-N,N'-hexamethylenedipropionamide, is particularly valued for its efficacy in demanding applications where thermal stability and protection against oxidative degradation are paramount.

Presented as a fine white powder, Antioxidant 1098 possesses specific physical and chemical properties that make it ideally suited for integration into various polymer matrices. Its molecular weight is approximately 637 g/mol, and it exhibits a melting point typically within the range of 156 to 161ºC. These characteristics are crucial for consistent performance and processability, ensuring that the additive integrates smoothly during polymer manufacturing and compounding processes. Furthermore, high purity is reflected in low ash content, typically ≤ 0.1%, and low volatile content, usually ≤ 0.5%, minimizing the risk of unwanted side reactions or emissions during high-temperature processing.

The primary application area where Antioxidant 1098 excels is within polyamide systems, commonly known as nylon. Polyamides are widely used in textiles, fibers, films, and engineering plastics due to their excellent mechanical properties, strength, and durability. However, like many polymers, polyamides are susceptible to degradation when exposed to heat and oxygen, particularly during processing steps like extrusion, injection molding, or fiber spinning, as well as during their service life under elevated temperatures. This degradation can lead to loss of physical properties, discoloration, and reduced lifespan of the final product.

Antioxidant 1098 provides robust protection against this thermal oxidative degradation. Its mechanism involves scavenging free radicals that initiate and propagate the oxidation process. By effectively neutralizing these radicals, the antioxidant interrupts the degradation chain reaction, thereby preserving the integrity and performance of the polymer. This is particularly vital during the high-temperature processing of polyamides, where molten polymer is exposed to oxygen, making it vulnerable to rapid degradation.

One of the significant benefits of incorporating Antioxidant 1098 is its ability to maintain the color properties of the polymer. Polyamides can often yellow or darken upon thermal exposure. The presence of this antioxidant helps to inhibit these undesirable color changes, ensuring that the final product retains its intended aesthetic appeal. This is especially important for polyamide fibers and films where color consistency is critical.

The versatility of Antioxidant 1098 allows for its incorporation at different stages of the production process. It can be added prior to polymerization, protecting the polymer chains as they are formed and ensuring a more stable starting material. Alternatively, it can be introduced during later stages of polymerization or by dry blending with polyamide chips before melt processing. For fiber production, incorporating Antioxidant 1098 into the polymer melt effectively protects the fibers during spinning, drawing, and thermal fixation processes.

Beyond polyamides, Antioxidant 1098 is also known to provide effective stabilization in other polymer types, including polyurethanes, where it offers protection against hydrolysis and oxidation, and elastomers. Its relatively low volatility compared to some other antioxidants means it is less likely to be lost during high-temperature processing or service life, contributing to long-term protection. Furthermore, its chemical structure provides good resistance to extraction by water or solvents, ensuring that the protective effect is maintained even when the final product is exposed to challenging environments.

The optical properties of Antioxidant 1098 are also noteworthy, particularly its high transmittance at key wavelengths (typically ≥98% at 425 nm and ≥99% at 500 nm when tested in solution), indicating that it has minimal impact on the clarity or transparency of the polymer when used at recommended levels. This makes it suitable for applications where optical properties are important.

Proper packaging and storage are essential to maintain the quality and efficacy of Antioxidant 1098. Standard packaging includes 25kg carton boxes with inner plastic bags or 25kg kraft paper bags. These containers should be kept sealed and stored in a cool, dry area away from direct heat or sunlight. Following these storage guidelines ensures that the product maintains its quality for up to two years.

As a reliable manufacturer and supplier of specialty chemicals, NINGBO INNO PHARMCHEM CO.,LTD. understands the critical role of high-quality additives like Antioxidant 1098 in achieving desired polymer performance. We focus on providing products that meet stringent quality standards, ensuring consistency and reliability for our customers' manufacturing processes. For detailed information regarding the price of Antioxidant 1098 (CAS 23128-74-7) or to learn more about how to buy or purchase this essential polymer additive, prospective clients are encouraged to contact us directly. We are committed to supporting the polymer industry with effective stabilization solutions that enhance the durability and quality of end products.