Flexzone 3C N-isopropyl-N’-phenyl-p-phenylenediamine Crompton-Uniroyal Chemical Antioxidants >> Amine Rubber - Elastomer (Chloroprene, Butyl …) FLEXZONE ® 3C Antioxidant / Antiozonant N-isopropyl-N’-phenyl-p-phenylenediamine Highly active chemical that combines exceptional protection against flexing, ozone, heat, oxygen in rubber products. Also, an excellent copper deactivator. Staining and discoloring. All purpose antioxidant/antiozonant used in tires, wire and cable, hose, footwear, mechanical goods and any rubber where aging, flexing or ozone resistance is required. Staining and discoloring N-isopropyl-N’-phenyl-p-phenylenediamine. Used as antioxidant and antiozonant. Provides very good protection against flexing, ozone, heat and oxygen in rubber products. Can be used as a very good copper deactivator.