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Akrochem Antiozonant PD-2 |
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1,3-DIMETHYLBUTYL-N-PHENYLPHENYLENEDIAMINE |
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N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine |
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793-24-8 |
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Antiozonant PD-2 is a staining/discoloring antiozonant and antioxidant in rubber goods (including natural, SBR, NBR, and PBD). It provides excellent protection against ozone, heat, oxidation, flex-cracking and metal ion (copper/manganese) poisoning. Its use is restricted to dark colored articles where migratory staining can be tolerated. Antiozonant PD-2 has a low melt point allowing excellent dispersion characteristics. It can have an activating effect on sulfur cures, especially in polychloroprenes (Polychloroprenes normally use MPD-100 for ozone protection unless one of the above high diene polymers is present. In this case, small amounts of PD-2 help protect the second polymer). PD-2 is not recommended with peroxide cures. Typical dosages of PD-2 are 1 to 2 phr. Up to 4 phr (or in combination with antioxidants like PANA, or Antioxidant 58) may be used in severe dynamic applications. A petroleum wax (paraffin/microcrystalline blend) is recommended to aid static ozone resistance and help bring PD-2 to the rubber surface. |
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Appearance brown to violet-brown pellets Melting Point 45ЎЖC (113ЎЖF) minimum Active Substance Content 97% min. Specific Gravity 1.02 solubility in benzene, carbon tetrachloride, ethyl acetate, methylene choride, acetone, thanol, and aliphatic hydrocarbons Insoluble in water. |
Industrial field |
additive, rubber & additives |
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