Distyrenated Phenol (DSP), CAS No. 61788-44-1, is a member of the hindered phenol antioxidants. Featuring non-staining properties, it can function as both an antioxidant and a flex fatigue anti-aging agent, making it a commonly used additive for aging protection in rubber products.

Application Characteristics of Distyrenated Phenol in Rubber Industry

Ⅰ.Compatibility

Excellent compatibility with a wide range of rubbers, including natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR), and ethylene-propylene-diene monomer rubber (EPDM).

Ⅱ.Heat Resistance

Decomposition temperature >250 °C, suitable for high-temperature rubber processing.

Ⅲ.Low Volatility

High molecular weight results in minimal loss during processing.

Ⅳ.Anti-fogging property

Superior to low-molecular-weight phenolic antioxidants; however, caution is still required at high dosage levels.

Ⅴ.Color Influence

May cause slight yellowing, making it unsuitable for light-colored or transparent rubber products. This is attributed to the conjugated structure, which is prone to discoloration upon oxidation.