Say No to Aging & Yellowing! Omnistab AN565 Delivers Superior Polymer Stability

Polymeric materials such as rubber, plastics, and elastomers have long permeated every aspect of production and daily life: synthetic rubber in shoe soles and anti-slip gloves provides comfort through its elasticity and wear resistance; plastic and elastomer components are essential for the structural integrity of household appliance casings, pipe profiles, and sealing elements; polymeric materials are ubiquitous in automotive interiors, tires, and shock absorption systems.

However, during processing and prolonged use, the material is constantly subjected to both thermal oxidation and free radical attacks.

l Structural vulnerabilities: Unsaturated bonds and reactive groups are highly susceptible to generating free radicals under thermal or oxidative conditions, leading to chain degradation.

l Thermo-oxygen attack: High processing temperatures combined with oxygen in the operating environment accelerate molecular chain cleavage, leading to the formation of chromophoric groups.

l Long-term degradation: The additives are prone to volatilization and precipitation, resulting in impaired sustained efficacy.

Qiantu Network Number: 73733585

Omnistab AN565 is a high-molecular-weight hindered phenolic antioxidant with the following application advantages:

l Dual-effect synergy enhances antioxidant capacity

Omnistab AN565 exhibits dual efficacy as both a primary and secondary antioxidant: As the primary antioxidant, its hindered phenolic groups can bind to peroxyl radicals (ROO·) and alkoxy radicals (RO·) generated during oxidation, directly terminating oxidative chain reactions and preventing material degradation at the source; as a secondary antioxidant, its sulfide structure efficiently decomposes hydroperoxides (ROOH), preventing their formation into new reactive free radicals and inhibiting the regeneration of oxidative cycles. This mechanism not only achieves synergistic protection within the molecule but also allows compatibility with other antioxidants, significantly enhancing overall antioxidant performance.

l Low volatility, no migration

Omnistab AN565 exhibits exceptional migration resistance, demonstrating minimal tendency to migrate to surfaces or leach into contact media in materials such as rubber, elastomers, and polyolefins. It exhibits negligible volatilization loss even during high-temperature processing and prolonged use, while maintaining sustained antioxidant performance to effectively prevent protection failure and product scaling caused by migration. This makes it particularly suitable for long-lasting anti-aging systems requiring stringent migration resistance and low volatility.

l It has a wide range of applications, covering various types of materials.

Compatible with various materials including SBR, NBR, SBS/SIS, EPDM, ABS, high-impact polystyrene, polyolefin, and polyamide; it provides stable anti-aging performance whether applied to rubber products, plastic profiles, or synthetic resins.

For more information about Omnistab AN565 products, please feel free to contact our sales team. DELTACHEM(QINGDAO)CO.,LTD. safeguards the quality of your polymer materials.