Polymer bound antioxidants have been prepared. The efficiency and permanence of these polymer bound paraphenylene diamines were compared with a conventionalamine type antioxidant instyrene/butadienevulcanisates.These polymer bound antioxidants were found to be less volatile and extractable than the conventional antioxidant. The vulcanisates showed improved aging resistance and ozone resistance in comparison with vulcanisates containing conventional antioxidant. The presence of liquid polymer bound paraphenylene diamine reduces the amount of plasticiser required for compounding. PRC/1734
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Sulekha et al. (2002) studied this question.
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