Naugard 477 Substituted aromatic amine blend Crompton-Uniroyal Chemical Antioxidants >> Amine Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE NAUGARD ® 477 Antioxidant Substituted aromatic amine blend Nonblooming in natural rubber up to 2.5 phr. Also, nonblooming in synthetic rubber up to 4.0 phr. Discoloring and staining. Recommended for such products as belting, wire, hose, tire treads and shoe soling. Naugard® 477 is an antioxidant recommended for such products as belting, wire, hose, tire treads and shoe soling. It is especially recommended for natural rubber tread compounds in combination with a Flexzone® antiozonant such as Flexzone 7P or Flexzone 12L Discoloring and staining substituted aromatic amine blend. Used as antioxidant in synthetic and natural rubber. Can be used in combination with antiozonants.