Is 6PPD an antiozonant based on p phenylenediamine?

6PPD is an organic chemical widely used as stabilising additive (or antidegradant) in rubbers, such as NR, SBR and BR; all of which are common in vehicle tires. Although it is an effective antioxidant it is primarily used because of its excellent antiozonant performance. It is one of several antiozonants based around p -phenylenediamine.

Why is Santoflex 6PPD better than IPPD?

Santoflex™ 6PPD gives better long term fatigue resistance and ozone protection than IPPD. Due to its specific molecular structure and higher rubber solubility, it is less affected by environmental variables, such as heat or leaching, leading to greater durability.

Is 6PPD a sacrificial agent?

Despite 6PPD being used in tires since the mid 1970s, its transformation to quinones was first recognized in 2020. The oxidized products are not effective antiozonants, meaning that 6PPD is a sacrificial agent.

Is 6PPD a toxicity hazard?

However, this same property facilitates the transfer of 6PPD and its oxidation products into the environment as tire-wear debris. The 6PPD-quinone (6PPD-Q, CAS RN: 2754428-18-5) is of particular and increasing concern, due to its toxicity to fish.