Phenolic antioxidants

Phenolic antioxidants, or AOs, effectively stabilize oxidation-prone materials like plastics, fibers, elastomers, and waxes. They act as free radical scavengers, safeguarding the final product without causing discoloration.

Phosphite Antioxidants

Phosphites are efficient decomposers of hydroperoxides that are formed during the autooxidation of polymers. Phosphites are especially used in melt processing where they are added in blends with hindered phenolic antioxidants. Such combinations are more effective than hindered phenol alone.

Sulfur Synergists

Sulfur-containing antioxidants, also referred to as thioethers, react with and decompose polymer peroxide to inert substances. These so-called ‘secondary antioxidants’ exhibit a remarkable synergism in combination with hindered phenols to offer additional long term stability.