Dovernox 76 Octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate 2082-79-3 ICC Industries-Dover Antioxidant >> Phenolic Acrylic/Acrylate Resins Polyurethane Vinyl Coatings >> Powder Coatings Coil Coating Powder coating Octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate. Used as primary antioxidant in paints and coatings. Antioxidants can be added to powder and coil coating formulations to prevent discoloration and loss of physical properties. Octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate. Used as primary antioxidant in powder and coil coating formulations. Prevents discoloration and loss of physical properties.