Rubber auxiliaries cause vulcanization from natural rubber. After more than 80 years of research, until the 20th century 20-30, with the basic variety of vulcanizing Accelerator 2-mercapto-Thiazole and its sub-sulfonamide derivatives and the industrialization of benzene diamine type of old-age agent, rubber auxiliaries are basically formed system. At present, the rubber additives in the stable period, vulcanizing accelerator and antioxidant Two main types of organic additives production of about 4% of the consumption of gum. The production of foreign rubber auxiliaries is very concentrated, the federal Germany Bayer AG and the United States Monsanto is the most important manufacturer. The production of Chinese rubber auxiliaries (referring to organic additives) began in 1952.