Accelerator M (2-mercaptobenzothiazole) is an important rubber vulcanization accelerator. The production process is still improving.

Accelerator M, chemical name 2-mercaptobenzothiazole, English abbreviation MBT, chemical formula C7H5NS2, appears as light yellow needle-like or flaky crystals, has an unpleasant odor, bitter taste, and is toxic. Accelerator M is insoluble in water and gasoline, slightly soluble in benzene, soluble in ethanol, ether, chloroform, acetone, glacial acetic acid, ethyl acetate, sodium hydroxide solution, sodium carbonate solution, etc. It is flammable and will emit toxic gases after combustion and decomposition. Smoke, explosion hazard. Accelerator M is an important rubber accelerator and can be used as a plasticizer.

Accelerator M is mainly used as a rubber accelerator, but can also be used as a plasticizer, electroplating additive, metal corrosion inhibitor, lubricant additive, pesticide fungicide, nitrogen fertilizer synergist, analytical reagent, etc. In the field of rubber product manufacturing, accelerator M can be used directly or in combination with other accelerators. It has a good vulcanization promotion effect on natural rubber and synthetic rubber. It has good dispersion and no pollution. It can be widely used in tires, tapes, Shoemaking and other fields. In addition, accelerator M can also be used as an intermediate to produce accelerators NS, DM, DZ, CBS, NOBS, DIBS, etc.

There are many preparation methods for accelerator M, which mainly include: using aniline as raw material, placing it in an autoclave, adding aniline, carbon disulfide, and sulfur to react under high pressure conditions; using o-nitrochlorobenzene as raw material, reacting with sodium hydrogen sulfide/ Hydrogen sulfide is produced by reacting under normal pressure conditions and then reacting with carbon disulfide; it is produced by reacting diphenylthiourea as raw material under medium pressure conditions. Among them, the aniline production process is simple, the supply of raw materials is stable, the equipment requirements are low, and the application ratio is high, but its yield is low; other methods have shortcomings in terms of raw material prices, process complexity, reaction control difficulty, equipment requirements, etc. , so new production methods of accelerator M are still coming out.

According to the “Accelerator M (2-Mercaptobenzothiazole) Industry In-depth Market Research and Investment Strategy Suggestions Report 2022-2026” released by the Industrial Research Center It shows that accelerator M is a general-purpose vulcanization accelerator. It is widely used in the production of styrene-butadiene rubber, nitrile rubber, EPDM rubber and other rubbers. It is an important rubber vulcanization accelerator. Globally, my country is the main accelerator producer, and accelerator M is one of the main products, accounting for about 5% of the annual output. The main accelerator M manufacturers in my country include Yanggu Huatai, Kelly Chemical, Lianyungang Sennics, etc.

Industry analysts said that accelerator M can be used directly as a vulcanization accelerator, or it can be used in conjunction with other accelerators, or in production It is an intermediate for other accelerators, so it has a wide range of uses and is in high demand. At this stage, the mainstream production process of accelerator M has a low yield and will emit waste gas and waste water, causing harm to the ecological environment. Since 2015, my country’s environmental protection policies have become increasingly stringent, the transformation and upgrading of the chemical industry has accelerated, and clean and efficient production in the accelerator M industry has become a trend. This is an important direction for enterprises to improve their competitiveness. In addition, product quality improvement is an important step for enterprises to improve their competitiveness. Another important direction.