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It is shown that the catalytic activity of variable valency metal ions, Cu++ and Fe+++, with respect to the oxidation of polymeric unsaturated hydrocarbons (natural and styrene-butadiene rubbers) can be completely suppressed by introducing into the polymer, materials which form strong inner complex compounds with these ions. It was established that the synthesized compounds of copper and iron with tetramethylthiuramdisulfide, diethyldithiocarbamic acid, and p-hydroxyphenyl-2-naphthylamine not only do not accelerate the oxidation of polymers, but act as inhibitors of the oxidation process. By chemical and luminescence methods the compositions of the indicated compounds were established to correspond to the following formulas: (D—deactivator) DFe and DCu (iron and copper compounds with tetramethylthiuramdisulfide); D2Fe and D2Cu (iron and copper compounds of diethyldithiocarbamic acid); DFe2 (iron compound of p-hydroxyphenyl-2-naphthylamine); DCu3 (copper compound of p-hydroxyphenyl-2-naphthylamine). These data indicate a new route for the synthesis of effective inhibitors for raw and vulcanized rubber.

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