Doverphos 10 HR Triphenyl phosphite ICC Industries-Dover Antioxidant >> Phosphite Coatings >> Powder Coatings Coil Coating Powder coating Triphenyl phosphite with 0.5% triisopropanolamine. Used as an antioxidant in paints and coatings. Antioxidants can be added to powder and coil coating formulations to prevent discoloration and loss of physical properties. Triphenyl phosphite with triisopropanolamine. Used as an antioxidant in powder and coil coating formulations. Prevents discoloration and loss of physical properties.