Benzothiazole and preparation method thereof

The invention belongs to the technical field of rubber accelerators, and provides benzothiazole and a preparation method thereof.According to the acid-alkali method principle, M in waste water of rubber accelerators NS (TBBS) and CBS (CZ) is recycled and then directly heated, or a metal catalyst is added for heating, benzothiazole, hydrogen sulfide and resin are generated through a reaction, reaction fractions at the temperature of 210 DEG C or above are recycled, and the benzothiazole is obtained. According to the preparation method of the benzothiazole, M in the CBS (CZ) and NS (TBBS) wastewater is recycled and regenerated into the benzothiazole, the wastewater is purified, the downstream wastewater treatment cost is reduced, and the regenerated benzothiazole can be directly sold or reused for production and synthesis of M (MBT) serving as a production raw material of the rubber accelerator CBS (TBBS) and NS (CZ). The method provides technical support for continuous production of the accelerator M, has good