Since tire and automobile parts such as fuel hose and rubber packing and timing belts etc are made of rubber vulcanizate, the improvements of their heat aging resistance by addition of antidegradant is very important theme.
This paper reviews the guide to the selection of proper antidegradant for improvement of heat aging resistance of rubber vulcanizate at various aging temperature, and better synergistic effects produced by the best combination of chain breaking antioxidants and peroxide decomposer, and the chemical reaction of novel antidegradant to rubber in the processing steps to afford non-extractable antidegradant.