Rubber vulcanizing accelerator M, commonly known as quick hot powder, pale yellow monoclinic acicular or sheet crystal, non-toxic, pollution-free, with special bitter taste, is an acid semi-super accelerator, which has a rapid promotion effect on natural rubber and general sulphur vulcanized synthetic rubber, good vulcanization flatness, its vulcanizing critical temperature is low.With the increasing pressure of environmental protection, environmental pollution will become one of the bottlenecks in the development of rubber additives in China.At the same time, the fundamental solution of environmental pollution control is to develop and popularize the clean production process and eliminate pollution in the synthesis process.Therefore, the development and application of green cleaning technology is the key to the future competition of rubber additives in China.
At present, the domestic production process of accelerator M adopts aniline method, that is, taking aniline, sulphur yellow and carbon disulfide as the main raw materials, the crude M is synthesized under high temperature and pressure, and the crude M is treated by acid and alkali method for purification, generating a large amount of waste gas, waste water and waste residue.