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Rulon Bearings
Akrochem Antiozonant PD-2
Categories: Other Engineering Material

Material Notes: Product Description: 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.

Information provided by Akrochem Corporation

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